CN114738964A - Regulation and control method and system of radiation air conditioner - Google Patents

Regulation and control method and system of radiation air conditioner Download PDF

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Publication number
CN114738964A
CN114738964A CN202210659259.1A CN202210659259A CN114738964A CN 114738964 A CN114738964 A CN 114738964A CN 202210659259 A CN202210659259 A CN 202210659259A CN 114738964 A CN114738964 A CN 114738964A
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temperature
fan coil
condensation
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mode
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CN114738964B (en
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陈卫杰
刘梓杭
胡伟强
阮国辉
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Wuxi Freshair Aq Technology Co ltd
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Wuxi Freshair Aq Technology Co ltd
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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
    • F24F11/62—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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

A regulation and control method of a radiation air conditioner belongs to the technical field of air conditioners and comprises the following steps: receiving a set target temperature value TIs provided withA preset value T0Inputting a system value xi with the condensation risk of the target scene, and collecting the indoor temperature TTemperature ofRelative humidity HWetAnd minimum temperature T of radiation surfaceSpoke(ii) a Entering a starting stage, calculating the condensation allowance delta T, and judging whether the condensation allowance delta T is larger than a preset value T or not0(ii) a The starting stage executes a corresponding starting mode according to the judgment result and starts a fan coil to enable an air outlet of the fan coil to supply air along a radiation surface; entering a stabilization phase when the start-up phase is completed, the stabilization phase adopting a stable operation mode,the steady operation mode includes: and (3) a fan coil executes a middle windshield, the water flow of the fan coil is 0%, and the water supply temperature of the radiation plate is adjusted to enable the condensation allowance delta t to be within the range of xi & ltdelta t & gt & lt delta t & gt & lt 2 ℃. The radiation air conditioner can quickly achieve the refrigeration effect and prevent the radiation surface from being condensed.

Description

Regulation and control method and system of radiation air conditioner
Technical Field
The application relates to the technical field of air conditioners, in particular to a method and a system for regulating and controlling a radiation air conditioner.
Background
Along with the continuous improvement of living standard, people's requirement to the indoor environment is also higher and higher, along with the popularization and application of green building to the radiant air conditioner that comfort level is high, and energy-conservation nature is good is more and more popularized.
During the use of the radiation air conditioner, the problems that the use comfort and the start hysteresis are seriously influenced due to the over-low starting humidity are often faced.
In the prior art, when the conventional radiation air conditioner is started to reach the set temperature, the indoor temperature and humidity can be monitored, and the indoor dew point t is calculatedroomObtaining the indoor dew point t from the corresponding point in the psychrometric chart, e.g. by temperature and humidityroomWhile monitoring the minimum temperature t of the radiation surface of the radiation plate0Then, one of the following operations is performed to prevent condensation: firstly, turning off the radiation air conditioner for a period of time, and then continuing the previous system judgment process; ② by changing the water supply temperature, t is increased0(ii) a And the cold water supply flow of the radiation air-conditioning system is reduced, and the operation load of the indoor dehumidifying unit is increased. However, the above-mentioned operation for preventing condensation has a problem that the time required for the room temperature to reach the set temperature is too long.
Disclosure of Invention
Object of the application
In view of the above, an object of the present invention is to provide a method and a system for controlling a radiation air conditioner, so as to solve the problem that the time for the room temperature to reach the set temperature is too long in the prior art for preventing condensation.
(II) technical scheme
The application discloses a regulation and control method of a radiation air conditioner, which comprises the following steps: s1, receiving set target temperature value TIs provided withA preset value T0Inputting a system value xi with the condensation risk size of the target scene, and collecting the indoor temperature TTemperature of the waterRelative humidity HWetAnd radiation of the radiation plateMinimum temperature T of the surfaceSpoke(ii) a And supplies water to the fan coil and the radiation plate; s2, entering a starting stage, calculating the condensation allowance delta T, and judging whether the condensation allowance delta T is larger than a preset value T or not0(ii) a The starting stage executes a corresponding starting mode according to the judgment result and starts a fan coil to enable an air outlet of the fan coil to supply air along the radiation surface of the radiation plate; the starting mode comprises a refrigerating mode and a dehumidifying mode, and when the condensation allowance delta T is more than or equal to T0When the starting stage executes a refrigeration mode, and when the condensation allowance Deltat is less than T0When the starting stage is started, a dehumidification mode is executed; when the starting stage reaches a preset condition, finishing the starting stage; s3, when the starting stage is finished, entering a stable stage, wherein the stable stage executes a stable operation mode, and the stable operation mode comprises the following steps: the fan coil is in an execution middle windshield, the water flow of the fan coil is 0%, and the water supply temperature of the radiation plate is adjusted, so that the condensation allowance delta t is in the range that delta t is smaller than xi and is less than or equal to 2 ℃.
In one possible embodiment, the cooling mode includes an interval tdetectTemperature ofWhen T isTemperature of-TIs provided withWhen the temperature is more than or equal to 5 ℃, the fan coil executes high wind level, and the water flow of the fan coil is 100 percent; when 2 ℃ is less than TTemperature of-TIs provided withWhen the temperature is lower than 5 ℃, the fan coil executes the middle wind shield, and the water flow of the fan coil is 100 percent; when 1 ℃ is less than TTemperature of-TIs provided withWhen the temperature is less than or equal to 2 ℃, the fan coil executes the medium wind shield, and the water flow of the fan coil is 60 percent.
In a possible embodiment, the dehumidification mode comprises an interval tdetectTemperature ofAnd HWetWhen H is presentWetAnd when the air flow rate is more than 60%, the fan coil executes low wind level, and the water flow rate of the fan coil is 100%.
In a possible embodiment, the preset value T is set to0Associated with the window of the room in which the panel is located, said preset value T0(0 ≦ N ≦ 3) or T =2 ℃ + N0.5 ℃ (0 ≦ N ≦ 3)0=4 ℃ (N > 3); and N is the equivalent number of the half-open windows outside the communication chamber.
In a possible embodiment, the cooling mode is performed during a start-up phaseThe preset condition is TTemperature of-TIs provided withLess than or equal to 1.5 ℃; when the dehumidification mode is executed in the starting stage, the preset condition is HWetLess than or equal to 60%, and TTemperature of-TIs provided with≤1.5℃。
As a second aspect of the present application, there is also provided a regulation and control system of a radiation air conditioner, including: the system comprises a control unit, at least one fan coil, a water supply unit and a radiation plate, wherein the control unit comprises a set value receiving module, an indoor temperature acquisition module, an indoor relative humidity acquisition module, a radiation surface minimum temperature acquisition module, a calculation module, a starting stage execution module and a stable stage execution module; the set value receiving module is used for receiving a manually set target temperature value TIs provided withA preset value T0Inputting a system value xi according to the condensation risk of the target scene; the indoor temperature acquisition module is used for acquiring indoor temperature TTemperature ofThe indoor relative humidity acquisition module is used for acquiring indoor relative humidity HWetThe radiation surface minimum temperature acquisition module is used for acquiring the minimum temperature T of the radiation surface of the radiation plateSpoke(ii) a The fan coil comprises an air outlet and an air damper adjusting component, the fan coil can be arranged on one side or in a relative mode relative to the radiation surface, the air outlet is used for supplying air along the radiation surface of the radiation plate, and the air damper adjusting component is used for adjusting the air damper executed by the fan coil; the water supply unit is used for supplying water to the fan coil and the pipe network of the radiation plate; the water supply unit comprises a water supply machine module, a valve assembly and a water supply pipeline communicated with the fan coil and the radiation plate; the calculation module is used for calculating the condensation allowance delta T and judging whether the condensation allowance delta T is larger than a preset value T or not0(ii) a The starting stage execution module is used for executing a corresponding starting mode according to the judgment result in the starting stage, the starting mode comprises a refrigeration mode and a dehumidification mode, and when the condensation allowance delta T is more than or equal to T0When the condensation residual quantity delta T is less than T, the starting stage execution module executes the refrigeration mode0When the dehumidification mode is executed, the starting-stage execution module executes the dehumidification mode; when the starting stage reaches a preset condition, finishing the starting stage; the stable phase execution module is used for executing a corresponding stable operation mode in the stable phaseEntering a stable stage and executing a stable operation mode when the starting stage is finished; the steady operation mode includes: adjusting the water supply temperature to ensure that the condensation allowance delta t is within the range of xi < delta t < 2 ℃, the fan coil executes a middle windshield, and the water flow of the fan coil is 0 percent.
In a possible embodiment, said cooling mode comprises an interval tdetectTemperature ofWhen T isTemperature of-TIs provided withWhen the temperature is more than or equal to 5 ℃, the fan coil executes high wind level, and the water flow of the fan coil is 100 percent; when 2 ℃ is less than TTemperature of-TIs provided withWhen the temperature is lower than 5 ℃, the fan coil executes the middle wind shield, and the water flow of the fan coil is 100 percent; when 1 ℃ is less than TTemperature of-TIs provided withWhen the temperature is less than or equal to 2 ℃, the fan coil executes the medium wind shield, and the water flow of the fan coil is 60 percent.
In a possible embodiment, the dehumidification mode comprises an interval tdetectTemperature ofAnd HWetWhen H is presentWetAnd when the air flow rate is more than 60%, the fan coil executes low wind shift, and the water flow rate of the fan coil is 100%.
In a possible embodiment, the preset value T is set to0Associated with the window of the room in which the panel is located, said preset value T0(0 ≦ N ≦ 3) or T =2 ℃ + N0.5 ℃ (0 ≦ N ≦ 3)0And (4) the temperature is not lower than 4 ℃ (N is more than 3), wherein N is the equivalent number of the half-open windows outside the communication chamber.
In a possible embodiment, when the cooling mode is executed during the start-up phase, the preset condition is TTemperature of the water-TIs provided withLess than or equal to 1.5 ℃; when the dehumidification mode is executed in the starting stage, the preset condition is HWetLess than or equal to 60%, and TTemperature of the water-TIs provided with≤1.5℃。
(III) advantageous effects
Setting the preset value T by arranging the relative positions of the fan coil and the radiant panel0The fan coil supplies air along the radiation surface, the protective airflow layer is formed on the radiation surface, the airflow isolation is realized for the indoor heat and humidity load which is suddenly increased, the radiation surface condensation is avoided, the reasonable starting mode is executed by setting the reasonable boundary value in the dehumidification mode and the refrigeration mode, the radiation air conditioner can quickly reach the refrigeration effect, and the radiation surface condensation is prevented from occurringA phenomenon; the target scene condensation risk is set, a system value xi is input, a stable operation mode is executed, the fan coil is executed, the surface convection heat exchange amount is further improved under the condition that the wind shield supplies air to the radiation surface to prevent condensation, the heat exchange efficiency of the radiation air conditioner is improved, and the energy is saved under the same heat load.
Additional advantages, objects, and features of the application will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the application. The objectives and other advantages of the present application may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining and illustrating the present application and should not be construed as limiting the scope of protection of the present application.
FIG. 1 is a system flow diagram of the present application;
FIG. 2 is a block diagram of a control unit of the present application;
FIG. 3 is a schematic diagram of the fan coil, water supply unit and radiant panel water supply of the present application;
FIG. 4 is an installation of the fan coil of the present application relative to a radiant panel;
FIG. 5 is another mounting of the fan coil of the present application relative to a radiant panel;
wherein: 1. a set value receiving module; 2. an indoor temperature acquisition module; 3. an indoor relative humidity acquisition module; 4. a radiation surface minimum temperature acquisition module; 5. a calculation module; 6. a starting phase execution module; 7. a stabilization phase execution module; 8. a fan coil; 9. a water supply module; 10. a valve assembly; 11. a radiation plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the above description of the present application, it should be noted that the terms "one side", "the other side" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the application is usually placed in when used, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Further, the term "identical" and the like do not mean that the components are absolutely required to be identical, but may have slight differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel", and does not mean that the structure must be perfectly perpendicular, but may be slightly inclined.
As shown in fig. 1, the embodiment provides a method for regulating and controlling a radiation air conditioner, which includes the following steps: s1, receiving the set target temperature TIs provided withA preset value T0Xi, collecting indoor temperature T through an indoor temperature collecting moduleTemperature ofIndoor relative humidity H is gathered to indoor relative humidity collection moduleWetAnd the lowest temperature acquisition module of the radiation surfaceMinimum temperature T of collective radiation surfaceSpoke(ii) a Opening a water supply machine module of the water supply unit to supply water to the fan coil and the radiation plate; the installation position of the fan coil relative to the radiation plate is set, so that the air supply distance can penetrate through the radiation surface of the radiation plate when the fan coil is arranged on one side of the radiation plate, or the sum of the air supply distance of the opposite air outlets is not less than the distance between the air outlets when the fan coil is arranged on one side of the radiation plate, and the air supply distance can penetrate through the radiation surface of the radiation plate. S2, entering a starting stage according to TTemperature of、HWetAnd TSpokeCalculating the residual condensation quantity delta T, preferably according to the TTemperature ofThe above-mentioned compound HWetCalculating indoor dew point troomBy Δ T = TSpoke-troomCalculating the condensation allowance delta t; judging whether the condensation allowance delta T is larger than a preset value T or not0(ii) a In the starting stage, a corresponding starting mode is executed according to the judgment result, and the fan coil is started to enable the air outlet of the fan coil to supply air along the radiation surface, wherein a point is added for description: and in the refrigeration mode stage, the air outlet temperature needs to be more than or equal to 15 ℃, the fan coil is started to enable the air inlet of the fan coil to be communicated with the indoor space, the air inlet and the air outlet are arranged at a preset angle, when the radiation surface is arranged in parallel to the horizontal roof, the air inlet and the air outlet are arranged at 90 degrees, the air inlet is vertically downward, and the air outlet of the fan coil and the air inlet of the air inlet form indoor internal circulation. The starting mode comprises a refrigerating mode and a dehumidifying mode, and when the condensation allowance delta T is more than or equal to T0When the system is started, a refrigeration mode is executed in the starting stage, and when the condensation allowance delta T is less than T0When the system is started, a dehumidification mode is executed in a starting stage; and a preset value T0The preset value T is associated with a window of a room where the radiation plate is located, radiation surface condensation caused by the influence of heat exchange and heat leakage between the window and the room on condensation allowance delta T is avoided, and0(0 ≦ N ≦ 3) or T =2 ℃ + N0.5 ℃ (0 ≦ N ≦ 3)0And (4) =4 ℃ (N is more than 3), wherein N is the equivalent number of the opposite-opening windows communicated with the outdoor, when the window is opened by a single window, each window is calculated according to 0.6 outer window, when the window is out of the corridor, and simultaneously, the window is opened by a single window, the principle of multiplying coefficients is adopted, each window is calculated according to 0.6 x 0.6=And (4) calculating 0.36 outer windows, wherein the special shapes of the windows are calculated according to actual equivalence, and the special shapes comprise the conditions of singular shapes and overlarge or undersize areas. The cooling mode includes: interval time tset TTemperature ofT is 5min when T isTemperature of-TIs provided withWhen the temperature is more than or equal to 5 ℃, the fan coil executes a high wind gear, the water flow of the fan coil is 100%, wherein the wind speed of the high wind gear is 10-20% higher than that of a medium wind gear, the wind speed of the medium wind gear is 10-20% higher than that of a low wind gear, and the low wind gear enables the air supply distance to penetrate through a radiation surface when the fan coil is arranged in a single side manner relative to the radiation plate, or enables the sum of the air supply distances of air outlets arranged in a relative manner to be not less than the distance between the air outlets when the fan coil is arranged in a relative manner relative to the radiation plate, and the water flow is 100% of the rated value of the fan coil; when 2 ℃ is less than TTemperature of-TIs provided withWhen the temperature is lower than 5 ℃, the fan coil executes the middle wind shield, and the water flow of the fan coil is 100 percent; when 1 ℃ is less than TTemperature of-TIs provided withWhen the temperature is less than or equal to 2 ℃, the fan coil executes a medium wind shield, and the water flow of the fan coil is 60 percent; the dehumidification mode is as follows: interval time tset TTemperature ofAnd HWetT is 5min when HWetAnd when the air flow rate is more than 60%, the fan coil executes low wind shift, and the water flow rate of the fan coil is 100%. When the starting stage reaches a preset condition, the starting stage is finished, and when the starting stage executes a refrigeration mode, the preset condition is TTemperature of-TIs provided withLess than or equal to 1.5 ℃; when the dehumidification mode is executed in the starting stage, the preset condition is HWetLess than or equal to 60%, and TTemperature of-TIs provided withLess than or equal to 1.5 ℃. S3, when the starting stage is finished, entering a stable stage and executing a stable operation mode corresponding to the stable stage, wherein the stable operation mode comprises the following steps: and the fan coil is in an execution middle windshield, the water flow of the fan coil is 0%, the air outlet temperature is room temperature, and the water supply temperature of the radiation plate is adjusted to ensure that the condensation allowance delta t is in the range of xi less than delta t and less than or equal to 2 ℃. Wherein, xi 0 value is input into a system value according to the condensation risk of a target scene, and xi of a high risk area is 1.0 ℃; the low risk region xi takes 0.5 deg.c. Adjusting the temperature of the water supply to ensure that the residual quantity delta t of the condensation is within the range of xi < delta t < 2 ℃. Adjusting the water supply temperature comprises water temperature adjustment and water flow adjustment: wherein when the condensation allowance delta t is less than xi, the back of the radiation plate is adjustedMixing part of the water guide with the water supplied by the radiation plate, and using the mixed water as new water supply to increase the minimum temperature T of the radiation surfaceSpokeThereby increasing the condensation allowance delta t, reducing the water flow of the radiation plate through the valve component, and reducing the valve opening according to 5 percent of the valve opening when the condensation allowance delta t is smaller than xi each time; when the condensation allowance delta T is more than 2 ℃, the water flow of the radiation plate is increased through the valve component, the valve opening is increased according to 5 percent of the valve opening when the condensation allowance delta T is more than 2 ℃, and the lowest temperature T of the radiation surface is reducedSpokeThereby reducing the condensation margin Δ t. The stable operation mode further includes a stable dehumidification mode (such as rain, etc.), when the humidity is determined to be greater than 90% and the humidity is suddenly increased in the room during the stable period, the stable dehumidification mode is performed, and when the humidity is determined to be greater than 90%WetLess than or equal to 60%, and TTemperature of-TIs provided withAnd executing a stable operation mode at the temperature of less than or equal to 1.5 ℃ until the system is closed. Setting the preset value T by arranging the relative positions of the fan coil and the radiant panel0The fan coil is used for supplying air along the radiation surface, the protective airflow layer is formed on the radiation surface, airflow isolation is realized for the heat and humidity load which is suddenly increased indoors, condensation of the radiation surface is avoided, and a reasonable starting mode is executed by setting a reasonable boundary value in a dehumidification mode and a refrigeration mode, so that the radiation air conditioner can quickly achieve a refrigeration effect, and the condensation of the radiation surface is prevented; setting a target scene condensation risk value xi and entering a system value xi and executing a stable operation mode, wherein in the stable operation mode, the surface convection heat exchange quantity is also improved under the condition that a fan coil executes air supply to a radiation surface by a windshield to prevent condensation; the heat exchange efficiency of the radiation air conditioner is improved, and the energy is saved under the same heat load.
As shown in fig. 2 to 5, as a second aspect of the present application, there is also provided a regulation and control system of a radiation air conditioner, including a control unit, at least one fan coil 8, a water supply unit, and a radiation plate 11, where the control unit includes a set value receiving module 1, an indoor temperature collecting module 2, an indoor relative humidity collecting module 3, a radiation surface minimum temperature collecting module 4, a calculating module 5, a start-up phase executing module 6, and a stabilization phase executing module 7.
The set value receiving module is used for receiving manually set target temperatureValue TIs provided withA preset value T0And the condensation risk of the target scene is recorded into a system value xi.
The indoor temperature acquisition module is used for acquiring indoor temperature TTemperature ofThe indoor relative humidity acquisition module is used for acquiring indoor relative humidity HWetThe radiation surface minimum temperature acquisition module is used for acquiring the minimum temperature T of the radiation surfaceSpoke(ii) a Indoor temperature collection module, indoor relative humidity collection module both generally set up can reflect the position of room environment operating mode better in being close to air exit or room, and the minimum temperature collection module of radiant surface sets up on cold water supply gets into indoor first radiant surface, owing to be close to the water supply side, condensation face temperature is also the minimum.
The fan coil comprises an air inlet, an air outlet and a wind shield adjusting assembly, and can be arranged on one side or in a relative mode relative to the radiation plate; the air outlet is used for discharging air from a radiation surface attached to the radiation plate, the air inlet is communicated with the indoor space, the air inlet and the air outlet are arranged at a preset angle, when the radiation surface is arranged in parallel to the horizontal roof, the air inlet and the air outlet are arranged at 90 degrees, and the air inlet is arranged vertically downwards; the air outlet is flat and long-strip air outlet, the air supply direction is along the top or side radiation surface, the attached air supply increases the air supply distance. The wind gear adjusting component is used for adjusting a wind gear executed by the fan coil; the fan coil can be arranged in various ways relative to the radiation surface, the air outlet of the fan coil needs to cover the radiation surface in any arrangement way, the fan coil can be arranged on one side relative to the radiation surface, can be arranged in a single group, or can be arranged in two or more groups, the air supply distance can penetrate through the radiation surface when the fan coil is arranged on one side relative to the radiation surface, and when the fan coil is arranged on the opposite radiation surface, the sum of the air supply distances of the opposite air outlets is not less than the distance between the air outlets; when the starting stage adopts a refrigeration mode, the fan coil controls the air outlet temperature to be more than or equal to 15 ℃ aiming at the water supply at 7 ℃, the air supply dew point can be well controlled to be below the air supply temperature, the radiation surface is generally between 19 and 21 ℃, the condensation of the radiation surface can be completely avoided, and when the stable operation stage is carried out, the air outlet temperature is room temperature.
The water supply unit is used for supplying water to the fan coil and a pipe network of the radiation surface; the water supply unit includes a water feeder module 9, a valve assembly 10, and a water supply line communicating the fan coil and the radiant surface. The bypass is added through the valve component, the bypass is connected with the fan coil, and the valve component is used for controlling the water flow change of the fan coil and the radiation surface.
The computing module is used for starting the radiation air conditioner according to the TTemperature ofAnd said HWetCalculating indoor dew point troomAnd according to said TSpokeAnd indoor dew point troomCalculating the condensation residual quantity delta T, wherein delta T = TSpoke-troom(ii) a And judging whether the condensation allowance delta T is not less than a preset value T0。
The starting stage execution module is used for executing a corresponding starting mode according to the judgment result in the starting stage, starting the fan coil to enable the air outlet of the fan coil to supply air along the radiation surface, starting the fan coil to enable the air inlet of the fan coil to supply air, forming indoor internal circulation by the air outlet of the fan coil and the air inlet of the air inlet, wherein the starting mode comprises a refrigeration mode and a dehumidification mode, and when the condensation allowance delta T is larger than or equal to T0When the condensation residual quantity delta T is less than T, the starting stage execution module executes the refrigeration mode0When the dehumidification mode is executed, the starting-stage execution module executes the dehumidification mode; and when the starting stage reaches a preset condition, finishing the starting stage. And a preset value T0The preset value T is associated with a window of a room where the radiation plate is located, radiation surface condensation caused by the influence of heat exchange and heat leakage between the window and the room on condensation allowance delta T is avoided, and0(0 ≦ N ≦ 3) or T =2 ℃ + N0.5 ℃ (0 ≦ N ≦ 3)0And =4 ℃ (N > 3), wherein N is the equivalent number of the split windows communicated with the outdoor, when the window is opened by a single window, each window is calculated according to 0.6 outer window, when the window is outside a corridor, each window is calculated according to 0.6 outer window, when the window is outside the corridor, and simultaneously, the window is opened by a single window, the principle of multiplying coefficients is adopted, each window is calculated according to 0.6 x 0.6=0.36 outer window, and when the window is abnormal, the opposite sex includes the situations of singular appearance, overlarge area or undersize area according to the actual equivalent calculation. The cooling mode includes: interval time tset TTemperature of the waterT is5min when TTemperature of-TIs provided withWhen the temperature is more than or equal to 5 ℃, the fan coil executes high wind level, and the water flow of the fan coil is 100 percent; when the temperature is less than 2 ℃ and less than TTemperature of-TIs provided withWhen the temperature is lower than 5 ℃, the fan coil executes the middle wind shield, and the water flow of the fan coil is 100 percent; when 1 ℃ is less than TTemperature of-TIs provided withWhen the temperature is less than or equal to 2 ℃, the fan coil executes a medium wind shield, and the water flow of the fan coil is 60 percent; the dehumidification mode is as follows: when H is presentWetAnd when the air flow rate is more than 60%, the fan coil executes low wind shift, and the water flow rate of the fan coil is 100%. When the starting stage reaches a preset condition, the starting stage is finished, and when the starting stage executes a refrigeration mode, the preset condition is TTemperature of-TIs provided withLess than or equal to 1.5 ℃; when the dehumidification mode is executed in the starting stage, the preset condition HWetLess than or equal to 60%, and TTemperature of-TIs provided with≤1.5℃。
The stable phase execution module is used for entering a stable phase when the starting phase is finished, and executing a corresponding stable operation mode in the stable phase, wherein the stable operation mode comprises the following steps: the fan coil is operated in the middle windshield, the water flow of the fan coil is 0%, and the water supply temperature of the radiation plate is adjusted, so that the condensation allowance delta t is in the range that delta t is smaller than xi and is less than or equal to 2 ℃. Wherein the xi value is input into a system value according to the condensation risk of a target scene, and the xi of a high risk area is 1.0 ℃; the low risk region xi takes 0.5 ℃. Adjusting the temperature of the supplied water to ensure that the residual quantity delta t of the condensation is specifically as follows within the range of xi less than delta t and less than or equal to 2 ℃: and water supply temperature control, including primary water supply temperature adjustment, water supply flow adjustment and proportional backwater water mixing control. The stable operation mode further comprises a stable dehumidification mode, when the humidity is judged to be greater than 90% and the indoor sudden increase of the humidity load (such as rain) is met in the stable stage, the stable dehumidification mode is executed, and when the humidity is judged to be greater than 90%, the stable dehumidification mode is executed, and when the humidity is judged to be HWetLess than or equal to 60%, and TTemperature of-TIs provided withAnd executing a stable operation mode when the temperature is less than or equal to 1.5 ℃ until the system is closed.
Finally, the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application, and all the technical solutions of the present application should be covered by the claims of the present application.

Claims (10)

1. A regulation and control method of a radiation air conditioner is characterized by comprising the following steps: s1, receiving set target temperature value TIs provided withA preset value T0Inputting a system value xi with the condensation risk of the target scene, and collecting the indoor temperature TTemperature ofRelative humidity HWetAnd minimum temperature T of radiation surfaceSpoke(ii) a And supplies water to the fan coil and the radiation plate; s2, entering a starting stage, calculating the condensation allowance delta T, and judging whether the condensation allowance delta T is larger than or equal to the preset value T or not0(ii) a The starting stage executes a corresponding starting mode according to the judgment result and starts a fan coil to enable an air outlet of the fan coil to supply air along the radiation surface of the radiation plate; the starting mode comprises a refrigerating mode and a dehumidifying mode, and when the condensation allowance delta T is more than or equal to T0When the starting stage executes a refrigeration mode, and when the condensation allowance Deltat is less than T0When the starting stage is started, a dehumidification mode is executed; when the starting stage reaches a preset condition, finishing the starting stage; s3, when the starting stage is finished, entering a stable stage, wherein the stable stage executes a stable operation mode, and the stable operation mode comprises the following steps: the fan coil is in an execution middle windshield, the water flow of the fan coil is 0%, and the water supply temperature of the radiation plate is adjusted, so that the condensation allowance delta t is in the range that delta t is smaller than xi and is less than or equal to 2 ℃.
2. A method as claimed in claim 1, wherein the cooling mode includes an interval tdetectTemperature of the waterWhen T isTemperature of the water-TIs provided withWhen the temperature is more than or equal to 5 ℃, the fan coil executes high wind level, and the water flow of the fan coil is 100 percent; when 2 ℃ is less than TTemperature of the water-TIs provided withWhen the temperature is lower than 5 ℃, the fan coil executes the middle wind shield, and the water flow of the fan coil is 100 percent; when 1 ℃ is less than TTemperature of-TIs provided withWhen the temperature is less than or equal to 2 ℃, the fan coil executes the medium wind shield, and the water flow of the fan coil is 60 percent.
3. A method as claimed in claim 2, wherein the dehumidification mode includes an interval tsign TTemperature ofAnd HWetWhen H is presentWetAnd when the air flow rate is more than 60%, the fan coil executes low wind shift, and the water flow rate of the fan coil is 100%.
4. A method for regulating and controlling a radiant air conditioner as claimed in claim 3, characterized in that said preset value T0Associated with the window of the room in which the panel is located, said preset value T0(0 ≦ N ≦ 3) or T =2 ℃ + N0.5 ℃ (0 ≦ N ≦ 3)0=4 ℃ (N > 3); and N is the equivalent number of the half-open windows outside the communication chamber.
5. The method as claimed in claim 4, wherein the preset condition is T when the cooling mode is performed in the start-up stageTemperature of-TIs provided withLess than or equal to 1.5 ℃; when the dehumidification mode is executed in the starting stage, the preset condition is HWetLess than or equal to 60%, and TTemperature of-TIs provided with≤1.5℃。
6. A regulation and control system of a radiation air conditioner, comprising: the system comprises a control unit, at least one fan coil, a water supply unit and a radiation plate, wherein the control unit comprises a set value receiving module, an indoor temperature acquisition module, an indoor relative humidity acquisition module, a radiation surface minimum temperature acquisition module, a calculation module, a starting stage execution module and a stable stage execution module; the set value receiving module is used for receiving a manually set target temperature value TIs provided withA preset value T0Inputting a system value xi according to the condensation risk of the target scene; the indoor temperature acquisition module is used for acquiring indoor temperature TTemperature ofThe indoor relative humidity acquisition module is used for acquiring indoor relative humidity HWetThe radiation surface minimum temperature acquisition module is used for acquiring the radiation surface minimum temperature T of the radiation plateSpoke(ii) a The fan coil comprises an air outlet and a wind gear adjusting component, the fan coil can be arranged on one side or in a relative mode relative to the radiation plate, and the air outlet is used forThe fan coil is used for driving the fan coil to rotate, and the fan coil is used for driving the fan coil to rotate; the water supply unit is used for supplying water to the fan coil and the pipe network of the radiation plate; the water supply unit comprises a water supply machine module, a valve assembly and a water supply pipeline communicated with the fan coil and the radiation plate; the calculation module is used for calculating the condensation allowance delta T and judging whether the condensation allowance delta T is not less than a preset value T0(ii) a The starting stage execution module is used for executing a corresponding starting mode according to the judgment result in the starting stage, the starting mode comprises a refrigeration mode and a dehumidification mode, and when the condensation allowance delta T is more than or equal to T0When the condensation residual quantity delta T is less than T, the starting stage execution module executes the refrigeration mode0When the dehumidification mode is executed, the starting-stage execution module executes the dehumidification mode; when the starting stage reaches a preset condition, finishing the starting stage; the stable phase execution module is used for executing a corresponding stable operation mode in a stable phase, entering the stable phase when the starting phase is finished, and executing the stable operation mode; the steady operation mode includes: the fan coil is used for executing a middle windshield, the water flow of the fan coil is 0%, and the water supply temperature of the radiation plate is adjusted, so that the condensation allowance delta t is within the range that delta t is less than delta t and less than or equal to 2 ℃.
7. The system as claimed in claim 6, wherein the cooling mode includes an interval tdetectTemperature of the waterWhen T isTemperature of-TIs provided withWhen the temperature is more than or equal to 5 ℃, the fan coil executes high wind level, and the water flow of the fan coil is 100 percent; when the temperature is less than 2 ℃ and less than TTemperature of-TIs provided withWhen the temperature is lower than 5 ℃, the fan coil executes the middle wind shield, and the water flow of the fan coil is 100 percent; when 1 ℃ is less than TTemperature of-TIs provided withWhen the temperature is less than or equal to 2 ℃, the fan coil executes a medium wind shield, and the water flow of the fan coil is 60 percent.
8. The system as claimed in claim 7, wherein the dehumidification mode includes an interval tsign TTemperature of the waterAnd HWetWhen H is presentWetAnd when the air flow rate is more than 60%, the fan coil executes low wind shift, and the water flow rate of the fan coil is 100%.
9. The system as claimed in claim 8, wherein the preset value T is set as0Associated with the window of the room in which the panel is located, said preset value T0(0 ≦ N ≦ 3) or T =2 ℃ + N0.5 ℃ (0 ≦ N ≦ 3)0And (4) the temperature is not lower than 4 ℃ (N is more than 3), wherein N is the equivalent number of the half-open windows outside the communication chamber.
10. The system as claimed in claim 9, wherein the preset condition is T when the start-up phase performs the cooling modeTemperature of-TIs provided withLess than or equal to 1.5 ℃; when the dehumidification mode is executed in the starting stage, the preset condition is HWetLess than or equal to 60%, and TTemperature of-TIs provided with≤1.5℃。
CN202210659259.1A 2022-06-13 2022-06-13 Regulation and control method and system of radiation air conditioner Active CN114738964B (en)

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