WO2021169060A1 - Method for controlling air-cooling module unit - Google Patents

Method for controlling air-cooling module unit Download PDF

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Publication number
WO2021169060A1
WO2021169060A1 PCT/CN2020/091308 CN2020091308W WO2021169060A1 WO 2021169060 A1 WO2021169060 A1 WO 2021169060A1 CN 2020091308 W CN2020091308 W CN 2020091308W WO 2021169060 A1 WO2021169060 A1 WO 2021169060A1
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Prior art keywords
time
real
air
modular
cooled
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PCT/CN2020/091308
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French (fr)
Chinese (zh)
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马东
赵雷
孙辉
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青岛海尔中央空调有限公司
海尔智家股份有限公司
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Publication of WO2021169060A1 publication Critical patent/WO2021169060A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/50—Load
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to a control method of a central air-conditioning system, in particular to a control method of an air-cooled modular unit.
  • Air-cooled modular units generally refer to central air-conditioning equipment based on modular technology, using air as the cold (heat) medium and as both cold (heat) sources.
  • Air-cooled modular units can be divided into single-cooling type and heat pump type air-cooled modular units.
  • Single refrigeration type and heat pump type air-cooled modular units are usually composed of multiple air-cooled modular units (hereinafter referred to as "module units") connected in parallel and can be connected to multiple air conditioners or user terminals (hereinafter referred to as "terminals”) in order to be able to Realize large area cooling and/or heating needs.
  • Each modular machine contains an independent refrigeration system, that is, each has a compressor, a condenser, an evaporator and an expansion device. Therefore, any abnormal situation in any refrigeration circuit will not affect the normal operation of other refrigeration circuits, thereby ensuring the relatively stable working performance of the unit.
  • the start and stop of the air-cooled modular unit with multiple interconnected modular units are controlled according to the outlet water temperature, and the load change is not effectively considered.
  • the load of the air-cooled module unit is small, the temperature of its outlet water will fluctuate relatively greatly. Therefore, only controlling the air-cooled module unit based on the outlet water temperature will not only cause frequent start and stop of the unit, but also reduce the energy efficiency of the unit, and the frequent start and stop of the unit will also affect the reliability of the compressor.
  • the present invention provides a control method of the air-cooled module unit.
  • the modular unit includes multiple parallel modular computers and can be connected to multiple terminals, and the control method includes:
  • the modular machine is activated based on the calculated opening number N'.
  • control method of the air-cooled modular unit in the step of starting the modular machine based on the calculated opening number N', it further includes the following steps:
  • control method of the above-mentioned air-cooled modular unit after the modular units are started one by one according to the calculated opening number N', the control method further includes:
  • the real-time capacity attenuation coefficient L'and the real-time load F' are recalculated, and based on the recalculated real-time capacity attenuation coefficient L'and
  • the real-time load F' determines the amount of change n of the open quantity of the modular machine, where when -1 ⁇ n ⁇ 1, the number of activated modules of the modular machine remains unchanged; when n ⁇ 1, one by one Start the n modules in the standby state; and when n ⁇ -1, shut down the n modules in the running state one by one.
  • control method of the air-cooled modular unit further includes:
  • the modules all start the machine one by one, when the cooled module unit operation run time T reaches a second predetermined period of time Tp2 when determining the cooled module Whether the real-time outlet water temperature of the unit reaches the target outlet water temperature Tset;
  • the real-time capacity attenuation coefficient L'and the real-time load R' are recalculated, and based on the recalculated real-time capacity attenuation coefficient L'and the real-time load R'determine the amount of change n of the open quantity of the modular machine, where -N ⁇ n ⁇ 1;
  • all the modules in the state machine will remain on or off one by one n-th of the machine module in an operating state, when the cooled module unit operation run time T
  • the step of judging whether the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset is re-entered.
  • the real-time capacity attenuation coefficient L of the air-cooled modular unit is calculated based on the following formula:
  • both A and B are constants.
  • the real-time load F is calculated based on the following formula:
  • the opening number N'of the modular unit is calculated based on the following formula:
  • N’ F*N, (Formula 3)
  • the change amount n is calculated based on the following formula:
  • the control method collects the air-cooled module The design water temperature To, the target water temperature Tset, and the design ambient temperature Te of the unit, the total number of modules N, and the total number of terminals M, and measure the real-time ambient temperature Te' to calculate the real-time air-cooled module unit based on these parameters Capacity attenuation coefficient L; calculate the real-time load F of the air-cooled module unit based on the total number of terminals M, the number of terminals real-time open M'and the real-time capacity attenuation coefficient L; calculate the module machine needs to be turned on based on the real-time load F and the total number of modules The number N'; and then start the module machine based on the calculated number N'.
  • the real-time capacity attenuation coefficient L'and real-time load F'of the air-cooled module unit are recalculated to adjust the number of modules to be turned on in real time. So as to ensure the stability of the outlet water temperature.
  • the formula 1 "L ⁇ [A*(Tset/To)] 2 +[B*(Te'/Te)] 2 ⁇ 1/2 "represents the capacity attenuation coefficient curve of the air-cooled module unit, and the air-cooled module
  • the real-time capacity attenuation coefficient of the unit is determined according to the capacity attenuation coefficient curve. Therefore, based on the real-time capability attenuation coefficient, the start and stop of the air-cooled module unit can be controlled more accurately.
  • Fig. 1 is an example of a system of an air-cooled modular unit to which the control method of an air-cooled modular unit of the present invention can be applied;
  • Figure 2 is a flow chart of the control method of the air-cooled modular unit of the present invention.
  • Fig. 3 is a flowchart of an embodiment of the control method of the air-cooled modular unit of the present invention.
  • the present invention provides a control method of an air-cooled modular unit.
  • the air-cooled modular unit includes multiple parallel modular units and can be connected to multiple
  • the control method includes:
  • the modular machine is started based on the calculated opening number N'.
  • the designed water temperature To and the designed ambient temperature Te refer to the parameters based on the design and selection of air-cooled modular units.
  • the target outlet water temperature Tset refers to the target outlet water temperature of the unit selected by the user based on specific operating conditions when the air-cooled module unit is running.
  • Fig. 1 is an example of an air-cooled modular unit system to which the control method of the air-cooled modular unit of the present invention can be applied.
  • the air-cooled modular unit has a number of N multiple air-cooled modular machines 11 connected in parallel with each other and is connected to a number of M multiple terminals 12 in fluid communication through pipes.
  • Each modular machine 11 has an independent heat pump refrigeration system.
  • These modular machines 11 can provide cold water and/or hot water for part or all of the terminals 12 as required to meet the cooling and heating load requirements of users.
  • the control method of the air-cooled module unit of the present invention can be applied to the air-cooled module unit, so as to control the number of start and stop of the module unit 11 of the air-cooled module unit by judging the load change of the terminal 12 according to changes in the environment and/or load , So as to ensure a stable water temperature, and avoid frequent start and stop of the unit, thereby improving the energy efficiency ratio of the unit.
  • Fig. 2 is a flow chart of the control method of the air-cooled modular unit of the present invention.
  • the control method of the air-cooled modular unit of the present invention includes steps S1, S2, S3, S4, S5, and S6.
  • step S1 input the design outlet temperature To of the air-cooled module unit, the target outlet temperature Tset, the design ambient temperature Te, the total number of modules N, and the total number of terminals M.
  • step S2 the real-time ambient temperature Te' of the air-cooled module unit is measured, and the real-time opening number M'of the terminal is determined.
  • step S3 the real-time capacity attenuation coefficient L of the air-cooled module unit is calculated based on the design outlet water temperature To, the target outlet water temperature Tset, the design environment temperature Te, and the real-time environment temperature Te'.
  • the real-time capability attenuation coefficient L is calculated using formula 1, namely:
  • step S4 the real-time load F of the air-cooled module unit is calculated based on the real-time capacity attenuation coefficient L, the total number of terminals M and the real-time opening number M'.
  • step S5 based on the real-time load F and the total number of modular computers N, the number of open modular computers N'is calculated.
  • N' F*N (Equation 3), where N'takes the integer value of F*N+1.
  • step S6 the module machine is started based on the calculated number of openings N'. Unless explicitly stated to the contrary, there is no restriction on the order of execution of these steps. For example, steps S1 and S2 can be executed at the same time.
  • Fig. 3 is a flowchart of an embodiment of the control method of the air-cooled modular unit of the present invention.
  • the control method of the air-cooled module unit of the present invention includes steps S1-S5, so as to obtain the real-time capacity attenuation coefficient of the air-cooled unit by using formulas 1, 2 and 3, respectively.
  • step S7 the control method may proceed to step S7.
  • the calculated opening number N' is compared with the total number N of modular machines.
  • the control method proceeds to step S8, that is, the modular machines are started one by one according to the calculated starting number N'.
  • the control method proceeds to step S15 to start all N modular machines one by one.
  • step S8 the control method proceeds to step S9 to determine whether the unit operating time T runs beyond the first time interval Tp1.
  • the first time interval Tp1 N'*3+10, and the unit is minutes, where "3" is the startup interval of the module machine 3 minutes.
  • the activation time interval may be longer or shorter than 3 minutes.
  • step S8 If the run time T run does not exceed a first predetermined period Tp1, the control method returns to step S8, start one by one after the holding operation N 'station module or boot unit. If the run time T run exceeds a first predetermined period Tp1, the control method proceeds to step S10, the real-time according to the measured ambient temperature Te 'real ability to recalculate damping coefficient L' and real-time load F '. In one or more embodiments, the calculation formulas used are Formula 1 and Formula 2 respectively. Then, the control method proceeds to step S11, in which step S11 determines the change amount n of the open number of the module based on the recalculated real-time capacity attenuation coefficient L'and real-time load F'.
  • step S12 determines whether the amount of change n is -1 ⁇ n ⁇ 1. If so, it means that the number of modules that have been activated does not need to be changed, for example, continue to operate with the calculated opening number N'until the operating time of the air-cooled module unit reaches the second predetermined time period Tp2, for example, 30 minutes (step S16).
  • the second predetermined time period Tp2 should be longer than the first predetermined time period Tp2.
  • step S17 determines whether the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset.
  • step S18 If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'.
  • n ⁇ 1 it means that the total capacity of the activated modules is not enough to meet the actual load demand, and more modules need to be activated. Therefore, the control method proceeds to step S13, and the modules in the standby state are activated one by one. n modular machines. On the contrary, when n ⁇ -1, it means that the total capacity of the running module machines exceeds the actual load demand. Therefore, the control method proceeds to step S14, and the n modules in the running state are shut down one by one. There is also a time interval between the module machines being closed one by one, for example, every 3 minutes (other suitable time intervals can be selected according to the needs) to shut down a module machine.
  • cooled module unit operation control method of operation time T reaches also proceeds to step S17, cooled module unit is determined in real time whether the water temperature reaches the target water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'.
  • start timing cooled module unit can also run time T run until it reaches a second predetermined period of time Tp2 of, For example, 30 minutes (step S16).
  • Tp2 a second predetermined period of time
  • the control method proceeds to step S17, and then determines the temperature of the water cooled module unit reaches the target water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends.
  • the control method returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'using the measured real-time ambient temperature Te'. Then, the control method proceeds to step S11, based on the recalculated real-time capacity attenuation coefficient L'and real-time load F'to determine the amount of change n of the opening number of the modular machine. In the case that all modules have been started, the actual value range of n should be -N ⁇ n ⁇ 1, that is, there is no need to start a new module.
  • step S16 i.e., cooled module unit to start timing operation until it reaches a second predetermined time T run period Tp2 of, for example, 30 minutes.
  • T run period Tp2 a second predetermined time T run period of, for example, 30 minutes.
  • step S17 determines in real time the temperature of the water cooled module unit reaches the target water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method also returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'.
  • the control method of the air-cooled modular unit can measure the load changes under different working conditions according to the performance attenuation curve of the unit, and can adjust in real time according to the real-time changes of ambient temperature and/or load
  • the operating quantity of the modular units ensures the stable supply of the outlet water temperature of the air-cooled modular units, avoids frequent start and stop of the compressors, and improves the energy efficiency ratio of the air-cooled modular units.

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Abstract

Provided is a method for controlling an air-cooling module unit. The air-cooling module unit comprises a plurality of module machines that are arranged in parallel and can be connected to a plurality of tail ends. The control method comprises: inputting a designed water output temperature To, a target water output temperature Tset, a designed ambient temperature Te, the total number N of module machines and the total number M of tail ends of an air-cooling module unit; measuring a real-time ambient temperature Te' of the air-cooling module unit, and determining the number M' of tail ends that are turned-on in real time; calculating a real-time capacity attenuation coefficient L of the air-cooling module unit on the basis of the designed water output temperature To, the target water output temperature Tset, the designed ambient temperature Te and the real-time ambient temperature Te'; calculating a real-time load F of the air-cooling module unit on the basis of the real-time capacity attenuation coefficient L, the total number M of tail ends and the number M' of tail ends that are turned-on in real time; on the basis of the real-time load F and the total number N of module machines, calculating the number N' of module machines that are turned-on; and starting the module machines on the basis of the calculated number N' of module machines that are turned-on. Not only can the technical problems of large fluctuations of a water output temperature of an air-cooling module unit and a reduction in the energy efficiency of the unit be solved, the frequent starting-stopping of the unit can also be avoided.

Description

风冷模块机组的控制方法Control method of air-cooled modular unit
优先权要求Priority claim
本申请要求2020年2月28日提交的、发明名称为“风冷模块机组的控制方法”、申请号为“202010130038.6”的中国发明专利申请的优先权益，通过引用其全部内容被结合到本申请中。This application claims the priority rights of a Chinese invention patent application filed on February 28, 2020, with the title of "Control Method for Air-cooled Module Units" and the Application Number "202010130038.6", the entire content of which is incorporated into this application by reference middle.
技术领域Technical field
本发明涉及中央空调***的控制方法，具体地涉及风冷模块机组的控制方法。The invention relates to a control method of a central air-conditioning system, in particular to a control method of an air-cooled modular unit.
背景技术Background technique
风冷模块机组，一般是指以模块化技术为基础，以空气为冷(热)介质，作为冷(热)源兼用型的中央空调设备。风冷模块机组可分为单制冷型和热泵型风冷模块机组。单制冷型和热泵型风冷模块机组通常都由多台并联的风冷模块机(以下简称“模块机”)组成并且能够连接到多个空调或用户末端(以下简称“末端”)，以便能够实现大面积的制冷和/或供热需要。每台模块机都包含独立的制冷***，即都具有压缩机、冷凝器、蒸发器和膨胀装置。因此，任何一个制冷回路发生异常情况都不会影响其他制冷回路的正常运行，从而保证了机组的相对稳定的工作性能。Air-cooled modular units generally refer to central air-conditioning equipment based on modular technology, using air as the cold (heat) medium and as both cold (heat) sources. Air-cooled modular units can be divided into single-cooling type and heat pump type air-cooled modular units. Single refrigeration type and heat pump type air-cooled modular units are usually composed of multiple air-cooled modular units (hereinafter referred to as "module units") connected in parallel and can be connected to multiple air conditioners or user terminals (hereinafter referred to as "terminals") in order to be able to Realize large area cooling and/or heating needs. Each modular machine contains an independent refrigeration system, that is, each has a compressor, a condenser, an evaporator and an expansion device. Therefore, any abnormal situation in any refrigeration circuit will not affect the normal operation of other refrigeration circuits, thereby ensuring the relatively stable working performance of the unit.
在现有技术中，这种具有多台互联模块机的风冷模块机组的启停是根据出水温度来控制的，没有有效地考虑负荷的变化。当风冷模块机组的负荷较小时，其出水温度波动会比较大。因此仅根据出水温度来控制风冷模块机组，不仅会造成该机组的频繁启停，而且也导致机组能效降低，并且该机组的频繁启停对压缩机的可靠性也会有影响。In the prior art, the start and stop of the air-cooled modular unit with multiple interconnected modular units are controlled according to the outlet water temperature, and the load change is not effectively considered. When the load of the air-cooled module unit is small, the temperature of its outlet water will fluctuate relatively greatly. Therefore, only controlling the air-cooled module unit based on the outlet water temperature will not only cause frequent start and stop of the unit, but also reduce the energy efficiency of the unit, and the frequent start and stop of the unit will also affect the reliability of the compressor.
相应地，本领域需要一种新的技术方案来解决上述问题。Correspondingly, a new technical solution is needed in this field to solve the above-mentioned problems.
发明内容Summary of the invention
为了解决现有技术中的上述问题，即为了解决风冷模块机组在负荷较小时出现出水温度波动大和能效低下的的技术问题，本发明提供一种风 冷模块机组的控制方法，所述风冷模块机组包括多台并联的模块机并可连接到多个末端，所述控制方法包括：In order to solve the above-mentioned problems in the prior art, that is, to solve the technical problems of large fluctuations in the outlet water temperature and low energy efficiency of the air-cooled module unit when the load is small, the present invention provides a control method of the air-cooled module unit. The modular unit includes multiple parallel modular computers and can be connected to multiple terminals, and the control method includes:
输入所述风冷模块机组的设计出水温度To、目标出水温度Tset、和设计环境温度Te、所述模块机的总数N、和所述末端的总数M；Input the design outlet temperature To, target outlet temperature Tset, and design ambient temperature Te of the air-cooled module unit, the total number N of the module units, and the total number M of the terminals;
测量所述风冷模块机组实时环境温度Te’并且确定所述末端的实时开启数量M’；Measure the real-time ambient temperature Te' of the air-cooled module unit and determine the real-time opening quantity M'of the terminal;
基于所述设计出水温度To、目标出水温度Tset、设计环境温度Te、和所述实时环境温度Te’计算所述风冷模块机组的实时能力衰减系数L；Calculate the real-time capacity attenuation coefficient L of the air-cooled module unit based on the design water temperature To, the target water temperature Tset, the design ambient temperature Te, and the real-time ambient temperature Te';
基于所述实时能力衰减系数L、所述末端的总数M和实时开启数量M’计算所述风冷模块机组的实时负荷F；Calculate the real-time load F of the air-cooled module unit based on the real-time capacity attenuation coefficient L, the total number M of the terminals, and the real-time opening number M';
基于所述实时负荷F和所述模块机的总数N计算所述模块机的开启数量N’；并且Based on the real-time load F and the total number N of the modular computers, calculate the number of openings N'of the modular computers; and
基于所计算的开启数量N’启动所述模块机。The modular machine is activated based on the calculated opening number N'.
在上述风冷模块机组的控制方法的优选技术方案中，在基于所计算的开启数量N’启动所述模块机的步骤中，又包括如下步骤：In the above-mentioned preferred technical solution of the control method of the air-cooled modular unit, in the step of starting the modular machine based on the calculated opening number N', it further includes the following steps:
比较所计算的开启数量N’与所述模块机的总数N；Compare the calculated opening number N'with the total number N of said modular machines;
当所计算的开启数量N’小于所述模块机的总数N时，按照所计算的开启数量N’逐台启动所述模块机；以及When the calculated opening number N'is less than the total number N of the modular machines, start the modular machines one by one according to the calculated opening number N'; and
当所计算的开启数量N’大于或等于所述模块机的总数N时，逐台启动所有模块机。When the calculated opening number N'is greater than or equal to the total number N of the modular machines, all the modular machines are started one by one.
在上述风冷模块机组的控制方法的优选技术方案中，在按照所计算的开启数量N’逐台启动所述模块机后，所述控制方法还包括：In the preferred technical solution of the control method of the above-mentioned air-cooled modular unit, after the modular units are started one by one according to the calculated opening number N', the control method further includes:
判断所述风冷模块机组的运行时间T 运行是否超过第一预定时间段Tp1； Analyzing the operation of the operation time T cooled module unit exceeds a first predetermined period Tp1 of;
如果所述运行时间T 运行没有超过第一预定时间段Tp1，所述模块机继续以所计算的开启数量N’运行；以及 If the run time T run does not exceed a first predetermined period Tp1, the module continues to run at the calculated opening amount N 'operation; and
如果所述运行时间T 运行超过所述第一预定时间段Tp1，则重新计算所述实时能力衰减系数L’和所述实时负荷F’，并且基于重新计算的所述实时能力衰减系数L’和所述实时负荷F’确定所述模块机的开启数量的变化量n，其中，当-1<n<1时，所述模块机的已启动台数保持不变；当n≥1时，逐台启动处于待机状态的n台所述模块机；并且当n≤-1时，逐台关闭处于运行状态的n台所述模块机。 If the operating time T runs beyond the first predetermined time period Tp1, the real-time capacity attenuation coefficient L'and the real-time load F'are recalculated, and based on the recalculated real-time capacity attenuation coefficient L'and The real-time load F'determines the amount of change n of the open quantity of the modular machine, where when -1<n<1, the number of activated modules of the modular machine remains unchanged; when n≥1, one by one Start the n modules in the standby state; and when n≤-1, shut down the n modules in the running state one by one.
在上述风冷模块机组的控制方法的优选技术方案中，所述控制方法还包括：In the above-mentioned preferred technical solution of the control method of the air-cooled modular unit, the control method further includes:
当所述风冷模块机组运行时间T 运行达到第二预定时间段Tp2时，判断所述风冷模块机组的实时出水温度是否达到所述目标出水温度Tset，其中，所述第二预定时间段Tp2长于所述第一预定时间段Tp1； Cooled module unit when the operation time T reaches a second predetermined operating period Tp2, the real-time determination of the temperature of the water cooled module unit has reached the target temperature Tset is water, wherein said second predetermined period of time Tp2 Longer than the first predetermined time period Tp1;
如果所述风冷模块机组的实时出水温度达到所述目标出水温度Tset，则关闭所述风冷模块机组；并且If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, shut down the air-cooled module unit; and
如果所述风冷模块机组的实时出水温度没有达到所述目标出水温度Tset，则返回到所述重新计算所述实时能力衰减系数L’和所述实时负荷R’的步骤。If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet temperature Tset, return to the step of recalculating the real-time capacity attenuation coefficient L'and the real-time load R'.
在上述风冷模块机组的控制方法的优选技术方案中，在逐台启动所有模块机后，当所述风冷模块机组运行时间T 运行达到第二预定时间段Tp2时，判断所述风冷模块机组的实时出水温度是否达到所述目标出水温度Tset； In a preferred aspect of the method of controlling the air unit modules, the modules all start the machine one by one, when the cooled module unit operation run time T reaches a second predetermined period of time Tp2 when determining the cooled module Whether the real-time outlet water temperature of the unit reaches the target outlet water temperature Tset;
如果所述风冷模块机组的实时出水温度达到所述目标出水温度Tset，则关闭所述风冷模块机组；If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, shut down the air-cooled module unit;
如果所述风冷模块机组的实时出水温度没有达到所述目标出水温度Tset，则重新计算所述实时能力衰减系数L’和所述实时负荷R’，并且基于重新计算的所述实时能力衰减系数L’和所述实时负荷R’确定所述模块机的开启数量的变化量n，其中，-N<n<1；并且If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet temperature Tset, the real-time capacity attenuation coefficient L'and the real-time load R'are recalculated, and based on the recalculated real-time capacity attenuation coefficient L'and the real-time load R'determine the amount of change n of the open quantity of the modular machine, where -N<n<1; and
当所述变化量n的绝对值小于1时，所有模块机继续保持开启状态；以及当-N<n≤-1时，逐台关闭处于运行状态的n台所述模块机。When the absolute value of the change amount n is less than 1, all the modular machines continue to remain in the open state; and when -N<n≤-1, the n modules in the running state are turned off one by one.
在上述风冷模块机组的控制方法的优选技术方案中，在所有模块机继续保持开启状态或者逐台关闭处于运行状态的n台所述模块机后，当所述风冷模块机组运行时间T 运行达到第二预定时间段Tp2时，重新进入判断所述风冷模块机组的实时出水温度是否达到所述目标出水温度Tset的步骤。 In a preferred aspect of the method of controlling the air-cooling unit of the module, all the modules in the state machine will remain on or off one by one n-th of the machine module in an operating state, when the cooled module unit operation run time T When the second predetermined time period Tp2 is reached, the step of judging whether the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset is re-entered.
在上述风冷模块机组的控制方法的优选技术方案中，所述风冷模块机组的实时能力衰减系数L基于以下公式计算：In the preferred technical solution of the control method of the air-cooled modular unit, the real-time capacity attenuation coefficient L of the air-cooled modular unit is calculated based on the following formula:
L＝{[A*(Tset/To)] 2+[B*(Te’/Te)] 2} 1/2,     (公式1) L={[A*(Tset/To)] 2 +[B*(Te'/Te)] 2 } 1/2 , (Formula 1)
其中，A、B均为常数。Among them, both A and B are constants.
在上述风冷模块机组的控制方法的优选技术方案中，所述实时负荷F基于以下公式计算：In the preferred technical solution of the control method of the air-cooled module unit, the real-time load F is calculated based on the following formula:
F＝L*M’/M      (公式2)。F=L*M’/M (Formula 2).
在上述风冷模块机组的控制方法的优选技术方案中，所述模块机的开启数量N’基于以下公式计算：In the preferred technical solution of the control method of the air-cooled modular unit described above, the opening number N'of the modular unit is calculated based on the following formula:
N’＝F*N，      (公式3)N’=F*N, (Formula 3)
其中，N’取F*N的整数位值+1。Among them, N'takes the integer value of F*N+1.
在上述风冷模块机组的控制方法的优选技术方案中，所述变化量n基于以下公式计算：In the preferred technical solution of the control method of the air-cooled module unit, the change amount n is calculated based on the following formula:
n＝F’*N-N’      (公式4)。n=F’*N-N’ (Formula 4).
本领域技术人员能够理解的是，在本发明风冷模块机组的控制方法的技术方案中，为了避免风冷模块机组的出水温度的大幅波动和能效低下的技术问题，该控制方法采集风冷模块机组的设计出水温度To、目标出水温度Tset、和设计环境温度Te、模块机的总数N、和末端的总数M，并且测量实时环境温度Te’，以便基于这些参数计算出风冷模块机组的实时能力衰减系数L；基于末端的总数M、末端的实时开启数量M’和实时能力衰减系数L计算出风冷模块机组的实时负荷F；基于实时负荷F和模块机的总数计算出模块机需要开启的数量N’；再基于计算出的数量N’启动模块机。这种通过判断末端负荷变化来控制风冷模块机组的模块机的启停数量，即在环境温度较高或机组负荷较小时，只启动部分模块机来维持稳定的出水温度，不仅能够解决风冷模块机组的出水温度大幅波动和机组能效降低的技术问题，而且还能避免机组的频繁启停。Those skilled in the art can understand that in the technical solution of the control method of the air-cooled module unit of the present invention, in order to avoid the large fluctuation of the outlet water temperature of the air-cooled module unit and the technical problems of low energy efficiency, the control method collects the air-cooled module The design water temperature To, the target water temperature Tset, and the design ambient temperature Te of the unit, the total number of modules N, and the total number of terminals M, and measure the real-time ambient temperature Te' to calculate the real-time air-cooled module unit based on these parameters Capacity attenuation coefficient L; calculate the real-time load F of the air-cooled module unit based on the total number of terminals M, the number of terminals real-time open M'and the real-time capacity attenuation coefficient L; calculate the module machine needs to be turned on based on the real-time load F and the total number of modules The number N'; and then start the module machine based on the calculated number N'. This way, by judging the end load change to control the number of start and stop of the module units of the air-cooled module unit, that is, when the ambient temperature is high or the unit load is small, only part of the module units are started to maintain a stable water outlet temperature, which can not only solve the problem of air cooling The technical problems of the large fluctuation of the outlet water temperature of the modular unit and the reduction of the unit's energy efficiency, and the frequent start and stop of the unit can also be avoided.
优选地，在风冷模块机组运行期间，根据环境温度和/或负荷的变化，通过重新计算风冷模块机组的实时能力衰减系数L’和实时负荷F’,来实时调整模块机的开启数量，从而保证出水温度的稳定。Preferably, during the operation of the air-cooled module unit, according to changes in ambient temperature and/or load, the real-time capacity attenuation coefficient L'and real-time load F'of the air-cooled module unit are recalculated to adjust the number of modules to be turned on in real time. So as to ensure the stability of the outlet water temperature.
优选地，公式1“L＝{[A*(Tset/To)] 2+[B*(Te’/Te)] 2} 1/2”代表风冷模块机组的能力衰减系数曲线，风冷模块机组的实时能力衰减系数根据该能力衰减系数曲线来确定。因此，基于该实时能力衰减系数能够更精确地控制风冷模块机组的启停。 Preferably, the formula 1 "L={[A*(Tset/To)] 2 +[B*(Te'/Te)] 2 } 1/2 "represents the capacity attenuation coefficient curve of the air-cooled module unit, and the air-cooled module The real-time capacity attenuation coefficient of the unit is determined according to the capacity attenuation coefficient curve. Therefore, based on the real-time capability attenuation coefficient, the start and stop of the air-cooled module unit can be controlled more accurately.
附图说明Description of the drawings
下面参照附图来描述本发明的优选实施方式，附图中：The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
图1是本发明风冷模块机组的控制方法可应用的风冷模块机组的***的示例；Fig. 1 is an example of a system of an air-cooled modular unit to which the control method of an air-cooled modular unit of the present invention can be applied;
图2是本发明风冷模块机组的控制方法的流程图；Figure 2 is a flow chart of the control method of the air-cooled modular unit of the present invention;
图3是本发明风冷模块机组的控制方法的实施例的流程图。Fig. 3 is a flowchart of an embodiment of the control method of the air-cooled modular unit of the present invention.
具体实施方式Detailed ways
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。The preferred embodiments of the present invention will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.
为了解决现有风冷模块机组的水温波动大和能效不够高的技术问题，本发明提供一种风冷模块机组的控制方法，该风冷模块机组包括多台并联的模块机并可连接到多个末端，该控制方法包括：In order to solve the technical problems of large water temperature fluctuations and insufficient energy efficiency of the existing air-cooled modular units, the present invention provides a control method of an air-cooled modular unit. The air-cooled modular unit includes multiple parallel modular units and can be connected to multiple At the end, the control method includes:
输入所述风冷模块机组的设计出水温度To、目标出水温度Tset、和设计环境温度Te、所述模块机的总数N、和所述末端的总数M；Input the design outlet temperature To, target outlet temperature Tset, and design ambient temperature Te of the air-cooled module unit, the total number N of the module units, and the total number M of the terminals;
测量所述风冷模块机组的实时环境温度Te'并且确定所述末端的实时开启数量M'；Measuring the real-time ambient temperature Te' of the air-cooled module unit and determining the real-time opening number M'of the terminal;
基于所述设计出水温度To、目标出水温度Tset、设计环境温度Te、和所述实时环境温度Te'计算所述风冷模块机组的实时能力衰减系数L；Calculate the real-time capacity attenuation coefficient L of the air-cooled module unit based on the design water temperature To, the target water temperature Tset, the design ambient temperature Te, and the real-time ambient temperature Te';
基于所述实时能力衰减系数L、所述末端的总数M和实时开启数量M'计算所述风冷模块机组的实时负荷F；Calculate the real-time load F of the air-cooled module unit based on the real-time capacity attenuation coefficient L, the total number M of the terminals, and the real-time opening number M';
基于所述实时负荷F和所述模块机的总数N计算所述模块机的开启数量N'；并且Based on the real-time load F and the total number N of the modular machines, calculate the number N'of opening the modular machines; and
基于所计算的开启数量N'启动所述模块机。The modular machine is started based on the calculated opening number N'.
设计出水温度To和设计环境温度Te是指用来设计和选择风冷模块机组时所基于的参数。目标出水温度Tset是指在风冷模块机组运行时用户基于具体的运行工况所选择的机组目标出水温度。The designed water temperature To and the designed ambient temperature Te refer to the parameters based on the design and selection of air-cooled modular units. The target outlet water temperature Tset refers to the target outlet water temperature of the unit selected by the user based on specific operating conditions when the air-cooled module unit is running.
图1是本发明风冷模块机组的控制方法可应用的风冷模块机组的***的示例。如图1所示，风冷模块机组具有数量为N的相互并联的多台风冷式模块机11并且通过管道流体连通地连接到数量为M的多台末端12。每个模块机11都具有独立的热泵式制冷***。这些模块机11根据需要能够为部分或全部末端12提供冷水和/或热水，以满足用户的冷热负荷需求。本发明风冷模 块机组的控制方法可应用在该风冷模块机组上，以便根据环境和/或负荷的变化，通过判断末端12的负荷变化来控制风冷模块机组的模块机11的启停数量，从而保证稳定的出水温度，并且避免机组的频繁启停，进而提高机组的能效比。Fig. 1 is an example of an air-cooled modular unit system to which the control method of the air-cooled modular unit of the present invention can be applied. As shown in FIG. 1, the air-cooled modular unit has a number of N multiple air-cooled modular machines 11 connected in parallel with each other and is connected to a number of M multiple terminals 12 in fluid communication through pipes. Each modular machine 11 has an independent heat pump refrigeration system. These modular machines 11 can provide cold water and/or hot water for part or all of the terminals 12 as required to meet the cooling and heating load requirements of users. The control method of the air-cooled module unit of the present invention can be applied to the air-cooled module unit, so as to control the number of start and stop of the module unit 11 of the air-cooled module unit by judging the load change of the terminal 12 according to changes in the environment and/or load , So as to ensure a stable water temperature, and avoid frequent start and stop of the unit, thereby improving the energy efficiency ratio of the unit.
图2是本发明风冷模块机组的控制方法的流程图。本发明风冷模块机组的控制方法包括步骤S1、S2、S3、S4、S5、和S6。在步骤S1中，输入风冷模块机组的设计出水温度To、目标出水温度Tset、设计环境温度Te、模块机的总数N、和末端的总数M。在步骤S2中，测量风冷模块机组的实时环境温度Te'，并且确定末端的实时开启数量M'。在步骤S3中，基于设计出水温度To、目标出水温度Tset、设计环境温度Te、和实时环境温度Te'计算风冷模块机组的实时能力衰减系数L。在一种或多种实施例中，实时能力衰减系数L使用公式1进行计算，即：Fig. 2 is a flow chart of the control method of the air-cooled modular unit of the present invention. The control method of the air-cooled modular unit of the present invention includes steps S1, S2, S3, S4, S5, and S6. In step S1, input the design outlet temperature To of the air-cooled module unit, the target outlet temperature Tset, the design ambient temperature Te, the total number of modules N, and the total number of terminals M. In step S2, the real-time ambient temperature Te' of the air-cooled module unit is measured, and the real-time opening number M'of the terminal is determined. In step S3, the real-time capacity attenuation coefficient L of the air-cooled module unit is calculated based on the design outlet water temperature To, the target outlet water temperature Tset, the design environment temperature Te, and the real-time environment temperature Te'. In one or more embodiments, the real-time capability attenuation coefficient L is calculated using formula 1, namely:
L＝{[A*(Tset/To)] 2+[B*(Te’/Te)] 2} 1/2， L={[A*(Tset/To)] 2 +[B*(Te'/Te)] 2 } 1/2 ,
其中，A和B为与风冷模块机组自身相关的常数，分别可根据实验确定。在步骤S4中，基于实时能力衰减系数L、末端的总数M和实时开启数量M'计算风冷模块机组的实时负荷F。在一种或多种实施例中，风冷模块机组的实时负荷F＝L*M’/M(公式2)。在步骤S5中，基于实时负荷F和模块机的总数N计算模块机的开启数量N'。在一种或多种实施例中，N’＝F*N(公式3)，其中，N’取F*N的整数位值+1。在步骤S6中则是基于所计算的开启数量N’启动模块机。除非有相反的明确说明，这些步骤没有执行顺序的限制，例如步骤S1和S2可同时执行。Among them, A and B are constants related to the air-cooled module unit, which can be determined according to experiments. In step S4, the real-time load F of the air-cooled module unit is calculated based on the real-time capacity attenuation coefficient L, the total number of terminals M and the real-time opening number M'. In one or more embodiments, the real-time load of the air-cooled module unit is F=L*M'/M (Equation 2). In step S5, based on the real-time load F and the total number of modular computers N, the number of open modular computers N'is calculated. In one or more embodiments, N'=F*N (Equation 3), where N'takes the integer value of F*N+1. In step S6, the module machine is started based on the calculated number of openings N'. Unless explicitly stated to the contrary, there is no restriction on the order of execution of these steps. For example, steps S1 and S2 can be executed at the same time.
图3是本发明风冷模块机组的控制方法的实施例的流程图。如图3所示，在一种或多种实施例中，本发明风冷模块机组的控制方法都包括步骤S1-S5，以便分别利用公式1、2和3获得风冷机组的实时能力衰减系数L、实时负荷L、和模块机需要开启的数量N’。Fig. 3 is a flowchart of an embodiment of the control method of the air-cooled modular unit of the present invention. As shown in Figure 3, in one or more embodiments, the control method of the air-cooled module unit of the present invention includes steps S1-S5, so as to obtain the real-time capacity attenuation coefficient of the air-cooled unit by using formulas 1, 2 and 3, respectively. L, real-time load L, and the number N'that the module needs to be turned on.
在一种或多种实施例中，在步骤S5中计算出模块机需要开启的数量N’后，控制方法可前进到步骤S7。如图3所示，在步骤S7中，比较所计算的开启数量N’与模块机的总数N。当所计算的开启数量N’小于模块机的总数N时，控制方法则前进到步骤S8，即按照所计算的启动数量N’逐台启动模块机。当所计算的开启数量N’大于等于N时，控制方法就前进到步骤S15，逐台启动所有N台模块机。在模块机逐台启动之间存在时间间隔，例如每隔3 分钟(根据需要也可以选择其它合适的时间间隔)启动一台模块机，以便降低启动时的电路负载。In one or more embodiments, after calculating the number N'that the module needs to be turned on in step S5, the control method may proceed to step S7. As shown in Fig. 3, in step S7, the calculated opening number N'is compared with the total number N of modular machines. When the calculated opening number N'is less than the total number N of modular machines, the control method proceeds to step S8, that is, the modular machines are started one by one according to the calculated starting number N'. When the calculated opening number N'is greater than or equal to N, the control method proceeds to step S15 to start all N modular machines one by one. There is a time interval between the module machines being started one by one, for example, every 3 minutes (other suitable time intervals can be selected according to needs) to start a module machine in order to reduce the circuit load at the start.
在步骤S8的N’台模块机启动完成后，控制方法前进到步骤S9，判断机组运行时间T 运行是否超过第一时间间隔Tp1。在一种或多种实施例中，第一时间间隔Tp1＝N’*3+10，单位为分钟，其中，“3”为模块机的启动间隔时间3分钟。在其它实施例中，启动时间间隔可长于或短于3分钟。 After the start of N'modular machines in step S8 is completed, the control method proceeds to step S9 to determine whether the unit operating time T runs beyond the first time interval Tp1. In one or more embodiments, the first time interval Tp1=N'*3+10, and the unit is minutes, where "3" is the startup interval of the module machine 3 minutes. In other embodiments, the activation time interval may be longer or shorter than 3 minutes.
如果运行时间T 运行没有超过第一预定时间段Tp1，控制方法就返回到步骤S8，逐台启动N’台模块机或启动后保持运行。如果运行时间T 运行超过第一预定时间段Tp1，控制方法则前进到步骤S10，根据测量的实时环境温度Te’重新计算实时能力衰减系数L’和实时负荷F’。在一种或多种实施例中，所使用的计算公式分别为公式1和公式2。然后，控制方法前进到步骤S11，在步骤S11中基于重新计算的实时能力衰减系数L’和实时负荷F’确定模块机的开启数量的变化量n。控制方法接着进入步骤S12，判断变化量n是否是-1<n<1。如果是，则意味着模块机的已启动台数不需要变动，例如继续以所计算的开启数量N’运行直到风冷模块机组运行时间达到第二预定时间段Tp2，例如30分钟(步骤S16)。第二预定时间段Tp2应当长于第一预定时间段Tp2。然后，控制方法前进到步骤S17，判断风冷模块机组的实时出水温度是否达到目标出水温度Tset。如果风冷模块机组的实时出水温度达到目标出水温度Tset，则风冷模块机组停止运行(步骤S18)，该控制流程结束。如果风冷模块机组的实时出水温度没有达到目标出水温度Tset，控制方法就返回到步骤S10，重新计算实时能力衰减系数L’和实时负荷F’。 If the run time T run does not exceed a first predetermined period Tp1, the control method returns to step S8, start one by one after the holding operation N 'station module or boot unit. If the run time T run exceeds a first predetermined period Tp1, the control method proceeds to step S10, the real-time according to the measured ambient temperature Te 'real ability to recalculate damping coefficient L' and real-time load F '. In one or more embodiments, the calculation formulas used are Formula 1 and Formula 2 respectively. Then, the control method proceeds to step S11, in which step S11 determines the change amount n of the open number of the module based on the recalculated real-time capacity attenuation coefficient L'and real-time load F'. The control method then proceeds to step S12 to determine whether the amount of change n is -1<n<1. If so, it means that the number of modules that have been activated does not need to be changed, for example, continue to operate with the calculated opening number N'until the operating time of the air-cooled module unit reaches the second predetermined time period Tp2, for example, 30 minutes (step S16). The second predetermined time period Tp2 should be longer than the first predetermined time period Tp2. Then, the control method proceeds to step S17 to determine whether the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'.
如图3所示，当n≥1时，说明已启动模块机的总容量不足以满足实际负荷需求，需要启动更多的模块机，因此控制方法前进到步骤S13，逐台启动处于待机状态的n台模块机。相反，当n≤-1时，说明已运行模块机的总容量超出实际负荷需求，因此控制方法前进到步骤S14，逐台关闭处于运行状态的n台模块机。模块机逐台关闭之间也存在时间间隔，例如每隔3分钟(根据需要也可以选择其它合适的时间间隔)关闭一台模块机。然后，风冷模块机组开始计时直到其运行时间T 运行达到第二预定时间段Tp2，例如30分钟(步骤S16)。当风冷模块机组运行时间T 运行达到第二预定时间段Tp2，控制方法也前进到步骤S17，判断风冷模块机组的实时出水温度是否达到目标出水温度Tset。如果风冷模块机组的实时出水温度达到目标出水温度Tset， 则风冷模块机组停止运行(步骤S18)，该控制流程结束。如果风冷模块机组的实时出水温度没有达到目标出水温度Tset，控制方法就返回到步骤S10，重新计算实时能力衰减系数L’和实时负荷F’。 As shown in Figure 3, when n≥1, it means that the total capacity of the activated modules is not enough to meet the actual load demand, and more modules need to be activated. Therefore, the control method proceeds to step S13, and the modules in the standby state are activated one by one. n modular machines. On the contrary, when n≤-1, it means that the total capacity of the running module machines exceeds the actual load demand. Therefore, the control method proceeds to step S14, and the n modules in the running state are shut down one by one. There is also a time interval between the module machines being closed one by one, for example, every 3 minutes (other suitable time intervals can be selected according to the needs) to shut down a module machine. Then, cooled module unit to start timing operation until it reaches a second predetermined time T run period Tp2 of, for example, 30 minutes (step S16). When the second predetermined period of time Tp2, cooled module unit operation control method of operation time T reaches also proceeds to step S17, cooled module unit is determined in real time whether the water temperature reaches the target water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'.
继续参考图3，在一种或多种实施例中，在步骤S15中逐台启动所有N台模块机后，风冷模块机组也开始计时直到其运行时间T 运行达到第二预定时间段Tp2，例如30分钟(步骤S16)。当风冷模块机组运行时间T 运行达到第二预定时间段Tp2，控制方法就前进到步骤S17，再判断风冷模块机组的出水温度是否达到目标出水温度Tset。如果风冷模块机组的实时出水温度达到目标出水温度Tset，则风冷模块机组停止运行(步骤S18)，该控制流程结束。如果风冷模块机组的实时出水温度没有达到目标出水温度Tset，控制方法就返回到步骤S10，利用测量的实时环境温度Te’重新计算实时能力衰减系数L’和实时负荷F’。然后，控制方法前进到步骤S11，基于重新计算的实时能力衰减系数L’和实时负荷F’确定模块机的开启数量的变化量n。在所有模块机已经全部启动的情况下，n的实际数值范围应当是-N<n<1，即不存在需要启动新的模块机的情形。因此，如果-1<n<1，控制方法就前进到步骤S16，即风冷模块机组开始计时直到其运行时间T 运行达到第二预定时间段Tp2，例如30分钟。如果-N<n≤-1，说明已运行模块机的总容量超出实际负荷需求，因此需要关闭n台已运行的模块机，对应地，控制方法前进到步骤S14。然后，控制方法前进到步骤S16，即风冷模块机组开始计时直到其运行时间T 运行达到第二预定时间段Tp2，例如30分钟或其它能够满足需要的更长或更短的时间段。当风冷模块机组运行时间T 运行达到第二预定时间段Tp2，控制方法就前进到步骤S17，再判断风冷模块机组的实时出水温度是否达到目标出水温度Tset。如果风冷模块机组的实时出水温度达到目标出水温度Tset，则风冷模块机组停止运行(步骤S18)，该控制流程结束。如果风冷模块机组的实时出水温度没有达到目标出水温度Tset，控制方法也返回到步骤S10，重新计算实时能力衰减系数L’和实时负荷F’。 With continued reference to FIG. 3, in one or more embodiments, after the start of all N sets of machine modules one by one in step S15, start timing cooled module unit can also run time T run until it reaches a second predetermined period of time Tp2 of, For example, 30 minutes (step S16). When cooled module unit operation run time T reaches a second predetermined period Tp2, the control method proceeds to step S17, and then determines the temperature of the water cooled module unit reaches the target water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'using the measured real-time ambient temperature Te'. Then, the control method proceeds to step S11, based on the recalculated real-time capacity attenuation coefficient L'and real-time load F'to determine the amount of change n of the opening number of the modular machine. In the case that all modules have been started, the actual value range of n should be -N<n<1, that is, there is no need to start a new module. Thus, if -1 <n <1, the control method proceeds to step S16, i.e., cooled module unit to start timing operation until it reaches a second predetermined time T run period Tp2 of, for example, 30 minutes. If -N<n≤-1, it means that the total capacity of the running module machine exceeds the actual load demand, so it is necessary to shut down the n running module machines. Correspondingly, the control method proceeds to step S14. Then, control proceeds to step S16, i.e., cooled module unit to start timing operation until it reaches a second predetermined time T run period Tp2 of, for example, 30 minutes, or to meet the needs of the other longer or shorter period of time. When cooled module unit operation run time T reaches a second predetermined period Tp2, the control method proceeds to step S17, and then determines in real time the temperature of the water cooled module unit reaches the target water temperature Tset. If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, the air-cooled module unit stops running (step S18), and the control flow ends. If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet water temperature Tset, the control method also returns to step S10 to recalculate the real-time capacity attenuation coefficient L'and the real-time load F'.
本发明的风冷模块机组的控制方法在风冷模块机组的运行期间，能够根据机组的性能衰减变化曲线衡量不同工况下的负荷变化，并且根据环境温度和/或负荷的实时变化，实时调整模块机的运行数量，从而保证风冷模块机组的出水温度的平稳供应，避免压缩机的频繁启停，并且提高了风冷模块机组的能效比。During the operation of the air-cooled modular unit of the present invention, the control method of the air-cooled modular unit can measure the load changes under different working conditions according to the performance attenuation curve of the unit, and can adjust in real time according to the real-time changes of ambient temperature and/or load The operating quantity of the modular units ensures the stable supply of the outlet water temperature of the air-cooled modular units, avoids frequent start and stop of the compressors, and improves the energy efficiency ratio of the air-cooled modular units.
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

  1. 一种风冷模块机组的控制方法，其特征在于，所述风冷模块机组包括多台并联的模块机并可连接到多个末端，所述控制方法包括：A control method of an air-cooled modular unit, characterized in that, the air-cooled modular unit includes multiple modular computers connected in parallel and can be connected to multiple terminals, and the control method includes:
    输入所述风冷模块机组的设计出水温度To、目标出水温度Tset、和设计环境温度Te、所述模块机的总数N、和所述末端的总数M；Input the design outlet temperature To, target outlet temperature Tset, and design ambient temperature Te of the air-cooled module unit, the total number N of the module units, and the total number M of the terminals;
    测量所述风冷模块机组的实时环境温度Te’并且确定所述末端的实时开启数量M’；Measure the real-time ambient temperature Te' of the air-cooled module unit and determine the real-time opening quantity M'of the terminal;
    基于所述设计出水温度To、目标出水温度Tset、设计环境温度Te、和所述实时环境温度Te’计算所述风冷模块机组的实时能力衰减系数L；Calculate the real-time capacity attenuation coefficient L of the air-cooled module unit based on the design water temperature To, the target water temperature Tset, the design ambient temperature Te, and the real-time ambient temperature Te';
    基于所述实时能力衰减系数L、所述末端的总数M和实时开启数量M’计算所述风冷模块机组的实时负荷F；Calculate the real-time load F of the air-cooled module unit based on the real-time capacity attenuation coefficient L, the total number M of the terminals, and the real-time opening number M';
    基于所述实时负荷F和所述模块机的总数N计算所述模块机的开启数量N’；并且Based on the real-time load F and the total number N of the modular computers, calculate the number of openings N'of the modular computers; and
    基于所计算的开启数量N’启动所述模块机。The modular machine is activated based on the calculated opening number N'.
  2. 根据权利要求1所述的风冷模块机组的控制方法，其特征在于，在基于所计算的开启数量N’启动所述模块机的步骤中，又包括如下步骤：The control method of the air-cooled modular unit according to claim 1, wherein the step of starting the modular unit based on the calculated opening number N'further comprises the following steps:
    比较所计算的开启数量N’与所述模块机的总数N，Compare the calculated opening number N'with the total number of modules N,
    当所计算的开启数量N’小于所述模块机的总数N时，按照所计算的开启数量N’逐台启动所述模块机；以及When the calculated opening number N'is less than the total number N of the modular machines, start the modular machines one by one according to the calculated opening number N'; and
    当所计算的开启数量N’大于或等于所述模块机的总数N时，逐台启动所有模块机。When the calculated opening number N'is greater than or equal to the total number N of the modular machines, all the modular machines are started one by one.
  3. 根据权利要求2所述的风冷模块机组的控制方法，其特征在于，在按照所计算的开启数量N’逐台启动所述模块机后，所述控制方法还包括：The control method of the air-cooled modular unit according to claim 2, characterized in that, after the modular units are started one by one according to the calculated opening number N', the control method further comprises:
    判断所述风冷模块机组的运行时间T 运行是否超过第一预定时间段Tp1； Analyzing the operation of the operation time T cooled module unit exceeds a first predetermined period Tp1 of;
    如果所述运行时间T 运行没有超过第一预定时间段Tp1，所述模块机继续以所计算的开启数量N’运行；以及 If the run time T run does not exceed a first predetermined period Tp1, the module continues to run at the calculated opening amount N 'operation; and
    如果所述运行时间T 运行超过所述第一预定时间段Tp1，则重新计算所述实时能力衰减系数L’和所述实时负荷F’，并且基于重新计算的所述实时能力衰减系数L’和所述实时负荷F’确定所述模块机的开启数量的变化量n，其 中，当-1<n<1时，所述模块机的已启动台数保持不变；当n≥1时，逐台启动处于待机状态的n台所述模块机；并且当n≤-1时，逐台关闭处于运行状态的n台所述模块机。 If the operating time T runs beyond the first predetermined time period Tp1, the real-time capacity attenuation coefficient L'and the real-time load F'are recalculated, and based on the recalculated real-time capacity attenuation coefficient L'and The real-time load F'determines the amount of change n of the open quantity of the modular machine, where when -1<n<1, the number of activated modules of the modular machine remains unchanged; when n≥1, one by one Start the n modules in the standby state; and when n≤-1, shut down the n modules in the running state one by one.
  4. 根据权利要求3所述的风冷模块机组的控制方法，其特征在于，所述控制方法还包括：The control method of the air-cooled modular unit according to claim 3, wherein the control method further comprises:
    当所述风冷模块机组运行时间T 运行达到第二预定时间段Tp2时，判断所述风冷模块机组的实时出水温度是否达到所述目标出水温度Tset，其中，所述第二预定时间段Tp2长于所述第一预定时间段Tp1； Cooled module unit when the operation time T reaches a second predetermined operating period Tp2, the real-time determination of the temperature of the water cooled module unit has reached the target temperature Tset is water, wherein said second predetermined period of time Tp2 Longer than the first predetermined time period Tp1;
    如果所述风冷模块机组的实时出水温度达到所述目标出水温度Tset，则关闭所述风冷模块机组；并且If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, shut down the air-cooled module unit; and
    如果所述风冷模块机组的实时出水温度没有达到所述目标出水温度Tset，则返回到所述重新计算所述实时能力衰减系数L’和所述实时负荷R’的步骤。If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet temperature Tset, return to the step of recalculating the real-time capacity attenuation coefficient L'and the real-time load R'.
  5. 根据权利要求2所述的风冷模块机组的控制方法，其特征在于，在逐台启动所有模块机后，当所述风冷模块机组运行时间T 运行达到第二预定时间段Tp2时，判断所述风冷模块机组的实时出水温度是否达到所述目标出水温度Tset； The control method of claim 2 cooled module unit as claimed in claim, characterized in that, after starting all modules in the machine one by one, when the operation of the air-cooling operation time T module unit reaches a second predetermined period of time Tp2, it is determined that Whether the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset;
    如果所述风冷模块机组的实时出水温度达到所述目标出水温度Tset，则关闭所述风冷模块机组；If the real-time outlet water temperature of the air-cooled module unit reaches the target outlet water temperature Tset, shut down the air-cooled module unit;
    如果所述风冷模块机组的实时出水温度没有达到所述目标出水温度Tset，则重新计算所述实时能力衰减系数L’和所述实时负荷R’，并且基于重新计算的所述实时能力衰减系数L’和所述实时负荷R’确定所述模块机的开启数量的变化量n，其中，-N<n<1；并且If the real-time outlet water temperature of the air-cooled module unit does not reach the target outlet temperature Tset, the real-time capacity attenuation coefficient L'and the real-time load R'are recalculated, and based on the recalculated real-time capacity attenuation coefficient L'and the real-time load R'determine the amount of change n of the open quantity of the modular machine, where -N<n<1; and
    当所述变化量n的绝对值小于1时，所有模块机继续保持开启状态；以及当-N<n≤-1时，逐台关闭处于运行状态的n台所述模块机。When the absolute value of the change amount n is less than 1, all the modular machines continue to remain in the open state; and when -N<n≤-1, the n modules in the running state are turned off one by one.
  6. 根据权利要求5所述的风冷模块机组的控制方法，其特征在于，在所有模块机继续保持开启状态或者逐台关闭处于运行状态的n台所述模块机后，当所述风冷模块机组运行时间T 运行达到第二预定时间段Tp2时，重新进入 判断所述风冷模块机组的实时出水温度是否达到所述目标出水温度Tset的步骤。 The control method of the air-cooled modular unit according to claim 5, characterized in that, after all the modular units continue to be turned on or the n units of the modular units in the running state are turned off one by one, when the air-cooled modular unit run run time T reaches a second predetermined period Tp2, the real-time re-enter the water temperature of the cooled module unit determining whether the step of the target outlet temperature Tset is reached.
  7. 根据权利要求1所述的风冷模块机组的控制方法，其特征在于，所述风冷模块机组的实时能力衰减系数L基于以下公式计算：The control method of the air-cooled modular unit according to claim 1, wherein the real-time capacity attenuation coefficient L of the air-cooled modular unit is calculated based on the following formula:
    L＝{[A*(Tset/To)] 2+[B*(Te’/Te)] 2} 1/2, L={[A*(Tset/To)] 2 +[B*(Te'/Te)] 2 } 1/2 ,
    其中，A、B均为常数。Among them, both A and B are constants.
  8. 根据权利要求1所述的风冷模块机组的控制方法，其特征在于，所述实时负荷F基于以下公式计算：The control method of the air-cooled modular unit according to claim 1, wherein the real-time load F is calculated based on the following formula:
    F＝L*M’/M。F=L*M’/M.
  9. 根据权利要求1所述的风冷模块机组的控制方法，其特征在于，所述模块机的开启数量N’基于以下公式计算：The control method of the air-cooled modular unit according to claim 1, characterized in that the open number N'of the modular unit is calculated based on the following formula:
    N’＝F*N，N’=F*N,
    其中，N’取F*N的整数位值+1。Among them, N'takes the integer value of F*N+1.
  10. 根据权利要求3或5所述的风冷模块机组的控制方法，其特征在于，所述变化量n基于以下公式计算：The control method of an air-cooled modular unit according to claim 3 or 5, wherein the change amount n is calculated based on the following formula:
    n＝F’*N-N’。n=F'*N-N'.
PCT/CN2020/091308 2020-02-28 2020-05-20 Method for controlling air-cooling module unit WO2021169060A1 (en)

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