CN202521796U - Total heat recovering unit with by-pass pipe - Google Patents
Total heat recovering unit with by-pass pipe Download PDFInfo
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- 238000004378 air conditioning Methods 0.000 description 7
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Abstract
本实用新型公开了一种带旁通管的全热回收机组，包括风机、热交换转轮、过滤器及连接各设备的通风道，所述通风道位于室外设有新风入口和排风口，通风道位于室内设有送风口和回风口，所述热交换转轮两端并接有旁通风道，其特征在于：所述新风入口处设有焓探头，该焓探头的信号输出端与带有软件的控制器连接，所述旁通风道上设有电磁阀，该电磁阀的控制端与所述带有软件的控制器连接。本实用新型通过在新风口处设置焓探头，实现对室外空气与室内空气热回收值的实时检测，适时接入或关闭旁通管路，有效减少能耗，降低运行成本，同时无需人工干预，减少运行管理人员成本。
The utility model discloses a total heat recovery unit with a bypass pipe, which includes a fan, a heat exchange wheel, a filter and an air passage connecting various devices. The air passage is located outdoors and is provided with a fresh air inlet and an air exhaust port. The air passage is located indoors and is provided with an air supply port and an air return port. Both ends of the heat exchange wheel are connected with a bypass air passage. A controller with software is connected, and a solenoid valve is arranged on the bypass channel, and the control end of the solenoid valve is connected with the controller with software. The utility model realizes the real-time detection of the heat recovery value of the outdoor air and the indoor air by setting the enthalpy probe at the fresh air outlet, and timely connects or closes the bypass pipeline, effectively reduces energy consumption and operation cost, and at the same time does not require manual intervention. Reduce operation and management personnel costs.
Description
技术领域 technical field
本实用新型涉及一种热能回收设备，具体涉及一种带旁通管的全热回收机组，用于回收空调排风中余热。The utility model relates to a heat energy recovery device, in particular to a total heat recovery unit with a bypass pipe, which is used for recovering waste heat in the exhaust air of an air conditioner.
背景技术 Background technique
目前中国每年竣工建筑面积约为20亿m2，其中公共建筑约有4亿m2。在公共建筑(特别是大型商场、高档旅馆酒店、高档办公楼等)的全年能耗中，大约50％～60％消耗于空调制冷与采暖***，20％～30％用于照明。而在空调采暖这部分能耗中，大约20％～50％由***护结构传热所消耗(夏热冬暖地区大约20％，夏热冬冷地区大约35％，寒冷地区大约40％，严寒地区大约50％)。从目前情况分析，这些建筑在围护结构、采暖空调***，以及照明方面，共有节约能源50％的潜力。采暖空调节能潜力最大，在暖通空调设计方面加以控制就能够有效的节能能源。而新风带来的潜热负荷可以占到空调总负荷的20％～40％，因此开发节能的新风***是建筑节能领域的一项重大课题。At present, China's annual construction area is about 2 billion m 2 , of which about 400 million m 2 are public buildings. In the annual energy consumption of public buildings (especially large shopping malls, high-end hotels, high-end office buildings, etc.), about 50% to 60% are consumed in air-conditioning refrigeration and heating systems, and 20% to 30% are used in lighting. In the energy consumption of air conditioning and heating, about 20% to 50% are consumed by the heat transfer of the outer enclosure structure (about 20% in hot summer and warm winter regions, about 35% in hot summer and cold winter regions, about 40% in cold regions, About 50% in severe cold areas). Based on the analysis of the current situation, these buildings have the potential to save energy by 50% in terms of envelope structure, heating and air-conditioning systems, and lighting. Heating and air-conditioning have the greatest energy-saving potential, and the control of HVAC design can effectively save energy. The latent heat load brought by the fresh air can account for 20% to 40% of the total load of the air conditioner, so the development of an energy-saving fresh air system is a major topic in the field of building energy conservation.
全热回收机组是一种空气能量回收设备，通常由风机、全热回收转轮、过滤装置等，常见的安装方式分为两种：不设旁通的热回收***(图1)，其特点是投资少，安装简便、占地省，但在不需要回收热量的过渡季节(春、秋两季)增加了风机能耗(在过渡季内外空气温度相差不多，如果热回收设备仍运转，没有温差交换，但风机仍需要消耗能量。)；设置旁通的热回收***(图2)，其特点是过渡季节新、排风经旁通管绕过热回收装置，不增加风机能耗，使用该安装结构，需要人工打开或关闭旁通阀门，一方面***复杂，机房面积增大，另一方面人工操控实时性差，也比较烦琐。The total heat recovery unit is a kind of air energy recovery equipment, usually consisting of a fan, a total heat recovery wheel, a filter device, etc., and the common installation methods are divided into two types: heat recovery system without bypass (Figure 1), its characteristics It is less investment, easy to install, and less land occupation, but in the transition season (spring and autumn) that does not need to recover heat, the energy consumption of the fan is increased (the air temperature inside and outside the transition season is similar, if the heat recovery equipment is still running, there is no The temperature difference is exchanged, but the fan still needs to consume energy.); Set up a bypass heat recovery system (Figure 2), which is characterized in that the transition season is new, the exhaust air bypasses the heat recovery device through the bypass pipe, and does not increase the energy consumption of the fan. Using this The installation structure requires manual opening or closing of the bypass valve. On the one hand, the system is complex and the area of the machine room increases. On the other hand, manual control is poor in real-time and cumbersome.
发明内容 Contents of the invention
本实用新型目的是提供一种带旁通管的全热回收机组，通过结构的改进，使***实现自动化，实时控制性强，无需人工干预。The purpose of the utility model is to provide a total heat recovery unit with a bypass pipe, through the improvement of the structure, the system can be automated, the real-time controllability is strong, and no manual intervention is required.
为达到上述目的，本实用新型采用的技术方案是：一种带旁通管的全热回收机组，包括风机、热交换转轮、过滤器及连接各设备的通风道，所述通风道位于室外设有新风入口和排风口，通风道位于室内设有送风口和回风口，所述热交换转轮两端并接有旁通风道，所述新风入口处设有焓探头，该焓探头的信号输出端与带有软件的控制器连接，所述旁通风道上设有电磁阀，该电磁阀的控制端与所述带有软件的控制器连接。In order to achieve the above purpose, the technical solution adopted by the utility model is: a total heat recovery unit with a bypass pipe, including a fan, a heat exchange wheel, a filter and an air duct connecting various equipment, the air duct is located outdoors There is a fresh air inlet and an air exhaust port, and the air duct is located indoors with an air supply port and an air return port. Both ends of the heat exchange wheel are connected with bypass air ducts. An enthalpy probe is provided at the fresh air inlet, and the enthalpy probe The signal output terminal is connected with the controller with software, the bypass channel is provided with a solenoid valve, and the control terminal of the solenoid valve is connected with the controller with software.
上述技术方案中，所述焓探头为检测空气中焓值的传感器，空气中的焓值是指空气中含有的总热量，通常以干空气的单位质量为基准，称作比焓。工程中简称为焓，是指一千克干空气的焓和与它相对应的水蒸气的焓的总和。在工程上，我们可以根据一定质量的空气在处理过程中比焓的变化，来判定空气是得到热量还是失去了热量。空气的比焓增加表示空气中得到热量；空气的比焓减小表示空气中失去了热量。本实用新型在新风入口处设置焓探头，将探测到的室外新风焓值传输到带有软件的控制器内，由预先设定的算法判断此时排风热回收的积极性，如热回收***能效比(回收热量/风机耗电量)低于空调***整体能效比(空调制冷量/耗电量)，则驱动旁通风道上的电磁阀，开启旁通，关闭热交换转轮；反之，则打开热交换转轮，关闭旁通风道上的电磁阀。通过测量焓值的变化，实时监控室外室内的空气焓值变化，适时由控制器开通旁路，大大降低能耗成本。所述带有软件的控制器可使用空调***自身的自控***，无需增加控制设备成本。In the above technical solution, the enthalpy probe is a sensor for detecting the enthalpy value in the air. The enthalpy value in the air refers to the total heat contained in the air, and is usually based on the unit mass of dry air, called specific enthalpy. In engineering, it is referred to as enthalpy for short, which refers to the sum of the enthalpy of one kilogram of dry air and the corresponding enthalpy of water vapor. In engineering, we can determine whether the air gains heat or loses heat according to the change in specific enthalpy of a certain mass of air during processing. An increase in the specific enthalpy of the air indicates that heat is gained in the air; a decrease in the specific enthalpy of the air indicates that heat is lost in the air. The utility model sets an enthalpy probe at the fresh air inlet, and transmits the detected outdoor fresh air enthalpy value to the controller with software, and judges the enthusiasm of exhaust air heat recovery at this time by a preset algorithm, such as the energy efficiency of the heat recovery system If the ratio (recovered heat/fan power consumption) is lower than the overall energy efficiency ratio of the air conditioning system (air conditioning cooling capacity/power consumption), the solenoid valve on the bypass channel will be driven to open the bypass and close the heat exchange wheel; otherwise, it will open The heat exchange runner closes the solenoid valve on the bypass channel. By measuring the change of the enthalpy value, the change of the air enthalpy value in the outdoor room is monitored in real time, and the bypass is opened by the controller in a timely manner, which greatly reduces the energy consumption cost. The controller with software can use the self-control system of the air-conditioning system without increasing the cost of control equipment.
上述技术方案中，所述新风入口处设有湿度探头，该湿度探头的信号输出端与所述带有软件的控制器连接。通过加入湿度的检测值，控制器可以准确判断出过渡季的时段。In the above technical solution, a humidity probe is provided at the fresh air inlet, and the signal output end of the humidity probe is connected to the controller with software. By adding the detection value of humidity, the controller can accurately determine the time period of the transition season.
由于上述技术方案运用，本实用新型与现有技术相比具有的优点是：Due to the use of the above technical solutions, the utility model has the following advantages compared with the prior art:
1、由于本实用新型在新风入口处设置了焓探头，在旁通风道上设置了电磁阀，由焓探头实时检测新风口的焓值，带有软件的控制器根据测得数据，与预设于控制器内的数据进行比较，判断是否开启或关闭旁通风道，当开启旁通风道时，关闭热交换转轮，反之则打开；自动控制整套排风热回收***，无需人工干预，极大的减少了季节交替时管理人员频繁切换机组运行模式的工作量，具有良好的节能性能和实用性；1. Since the utility model is equipped with an enthalpy probe at the fresh air inlet and a solenoid valve on the bypass duct, the enthalpy probe can detect the enthalpy value of the fresh air outlet in real time, and the controller with software will match the preset value according to the measured data. Compare the data in the controller to judge whether to open or close the bypass duct. When the bypass duct is opened, the heat exchange wheel is closed, otherwise it is opened; the entire set of exhaust heat recovery system is automatically controlled without manual intervention. It reduces the workload of managers who frequently switch unit operation modes when the seasons change, and has good energy-saving performance and practicability;
2、本实用新型通过湿度探头和焓值探头的实时检测数据，带有软件的控制器根据测得数据判断过渡季与否，比较控制器内的预设值，适时开启旁通风道电磁阀，减少***能耗，降低运行成本；2. The utility model uses the real-time detection data of the humidity probe and the enthalpy probe, and the controller with software judges whether the transition season is based on the measured data, compares the preset values in the controller, and opens the solenoid valve of the bypass channel in due course. Reduce system energy consumption and reduce operating costs;
3、避免机组的频繁转换工况，提高机组寿命。3. Avoid frequent switching of working conditions of the unit and improve the service life of the unit.
附图说明 Description of drawings
图1是现有技术中不设旁通的热回收***示意图；Fig. 1 is a schematic diagram of a heat recovery system without bypass in the prior art;
图2是现有技术中带有旁通的热回收***示意图；Fig. 2 is a schematic diagram of a heat recovery system with a bypass in the prior art;
图3是本实用新型实施例一的结构示意图。Fig. 3 is a structural schematic diagram of Embodiment 1 of the utility model.
其中：1、风机；2、热交换转轮；3、过滤器；4、新风入口；5、排风口；6、送风口；7、回风口；8、旁通风道；9、焓探头；10、湿度探头；11、电磁阀。Among them: 1. Fan; 2. Heat exchange wheel; 3. Filter; 4. Fresh air inlet; 5. Exhaust outlet; 6. Air supply outlet; 7. Return air outlet; 8. Bypass air duct; 9.
具体实施方式 Detailed ways
下面结合附图及实施例对本实用新型作进一步描述：Below in conjunction with accompanying drawing and embodiment the utility model is further described:
实施例一：参见图3所示，一种带旁通管的全热回收机组，包括风机1、热交换转轮2、过滤器3及连接各设备的通风道，所述通风道位于室外设有新风入口4和排风口5，通风道位于室内设有送风口6和回风口7，所述热交换转轮2两端并接有旁通风道8，所述新风入口4处设有焓探头9和湿度探头10，焓探头和湿度探头的信号输出端分别与带有软件的控制器连接，所述旁通风道8上设有电磁阀11，该电磁阀11的控制端与所述带有软件的控制器连接。Embodiment 1: As shown in Figure 3, a total heat recovery unit with a bypass pipe includes a fan 1, a
具体控制过程：7Specific control process: 7
(1)***形式：新风机组送风量为1000m3/h，***每天8:00～1800运行，全年运行；(1) System form: the air supply volume of the fresh air unit is 1000m3/h, and the system operates from 8:00 to 1800 every day, and operates throughout the year;
(2)室内设计条件：南京地区，夏季，26℃，相对湿度60％；冬季，20℃，相对湿度40％，室外新风空气焓值在此两种状态之间时，定义为过渡季；(2) Interior design conditions: Nanjing area, summer, 26°C, relative humidity 60%; winter, 20°C, relative humidity 40%, when the enthalpy of outdoor fresh air is between these two states, it is defined as the transition season;
(3)热回收装置：平均效率65％，排风侧压降120Pa，送风侧压降150Pa，送风量1000m3/h，过渡季节不运行；(3) Heat recovery device: the average efficiency is 65%, the pressure drop on the exhaust side is 120Pa, the pressure drop on the air supply side is 150Pa, the air supply volume is 1000m 3 /h, and it does not operate in transitional seasons;
(4)风机运行效率取60％，排风侧中效过滤器阻力120Pa；(4) The operating efficiency of the fan is 60%, and the resistance of the medium-efficiency filter on the exhaust side is 120Pa;
(5)学校教学楼电价按居民生活电价0.55元/kWh计算；(5) The electricity price of the school teaching building is calculated according to the residential electricity price of 0.55 yuan/kWh;
(6)冬夏季冷热源均为地源热泵***，夏季EER取3.5，冬季COP取2.5。(6) The cold and heat sources in winter and summer are all ground source heat pump systems, the EER in summer is 3.5, and the COP in winter is 2.5.
计算时采用清华大学建筑能耗分析软件Dest生成的全年气象参数，编制相应计算程序，计算结果见表1。The annual meteorological parameters generated by the building energy consumption analysis software Dest of Tsinghua University were used in the calculation, and the corresponding calculation program was compiled. The calculation results are shown in Table 1.
表1南京地区全热回收装置全年动态节能分析Table 1 Annual Dynamic Energy Saving Analysis of Total Heat Recovery Units in Nanjing Area
方式1为现有技述，方式2为本实施例的运行数据，以特征年气候数据分析，方式2的投资回收期为3.98a；方式2相对方式1节能率为10.60％；以小时为时间步长分析，全年在8:00～18:00时区间内，室外空气焓值在过渡季与夏季、过渡季与冬季间转换多达58次，管理上十分困难。若在程序中设定连续3小时室外空气焓值处在过渡季区间时机组转换，其全年转换次数降为5次，极大的便捷了管理；此外，即使室外空气焓值处于过渡季区间，热回收热量可能仍不足以弥补设备耗电量的增加，可在预订的程序中设定在此种工况下按旁通路径运行。Mode 1 is the prior art description,
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| CN103398443A (en) * | 2013-08-02 | 2013-11-20 | 重庆海润节能技术股份有限公司 | Clean fresh air system and air cleaning method |
| GB2508425A (en) * | 2012-11-30 | 2014-06-04 | Greenwood Air Man Ltd | Heat recovery ventilation unit |
| CN104456788A (en) * | 2014-11-07 | 2015-03-25 | 北京百度网讯科技有限公司 | Fresh air processor and fresh air processing method |
| CN110081578A (en) * | 2019-04-16 | 2019-08-02 | 上海建工集团股份有限公司 | A kind of heat exchanger and control method with by-pass line of intelligent control |
| CN111520857A (en) * | 2020-05-09 | 2020-08-11 | 江苏致远高科能源科技有限公司 | Double-working-condition fresh air dehumidifying and temperature adjusting processing device |
| CN113218012A (en) * | 2020-07-09 | 2021-08-06 | 中国建筑科学研究院有限公司 | Anti-frosting fresh air heat recovery device and control method thereof |
| CN114234289A (en) * | 2021-12-17 | 2022-03-25 | 珠海格力电器股份有限公司 | Multi-working-condition tail end air conditioning system, control method and control device |
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| GB2508425A (en) * | 2012-11-30 | 2014-06-04 | Greenwood Air Man Ltd | Heat recovery ventilation unit |
| GB2508425B (en) * | 2012-11-30 | 2017-08-23 | Greenwood Air Man Ltd | Heat recovery ventilation unit |
| CN103398443A (en) * | 2013-08-02 | 2013-11-20 | 重庆海润节能技术股份有限公司 | Clean fresh air system and air cleaning method |
| CN103398443B (en) * | 2013-08-02 | 2016-01-20 | 重庆海润节能技术股份有限公司 | A kind of clean VMC and clean wind method |
| CN104456788A (en) * | 2014-11-07 | 2015-03-25 | 北京百度网讯科技有限公司 | Fresh air processor and fresh air processing method |
| CN104456788B (en) * | 2014-11-07 | 2017-10-27 | 北京百度网讯科技有限公司 | Fresh air processor and fresh air processing method |
| CN110081578A (en) * | 2019-04-16 | 2019-08-02 | 上海建工集团股份有限公司 | A kind of heat exchanger and control method with by-pass line of intelligent control |
| CN111520857A (en) * | 2020-05-09 | 2020-08-11 | 江苏致远高科能源科技有限公司 | Double-working-condition fresh air dehumidifying and temperature adjusting processing device |
| CN113218012A (en) * | 2020-07-09 | 2021-08-06 | 中国建筑科学研究院有限公司 | Anti-frosting fresh air heat recovery device and control method thereof |
| CN114234289A (en) * | 2021-12-17 | 2022-03-25 | 珠海格力电器股份有限公司 | Multi-working-condition tail end air conditioning system, control method and control device |
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