Air conditioner temperature and humidity decoupling system and control method thereof

An air conditioning temperature and humidity technology, which is applied in the control input of air characteristics, space heating and ventilation control input, heating method, etc. Control automation, control automation, avoid energy waste, and reduce the effect of fan energy consumption

Inactive Publication Date: 2018-01-16
湖北中航安智技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The indoor hot and humid environment has a great impact on the thermal comfort of the human body. With the improvement of the quality of life, a single temperature control can no longer meet people's needs for thermal comfort.
In the air conditioning system, the temperature and humidity control of the room has the characteristics of strong nonlinearity and strong coupling. The traditional air conditioning system (such as the primary return air system) generally uses the end coil to cool and dehumidify the air to control the temperature, and heat it through the reheating device. Air is used to control the temperature, which will cause a large waste of energy and the system structure is also complicated
If reheating is not carried out, in order to avoid condensation, the temperature of the air supply should not be too low, and the humidity level of the room cannot be guaranteed at this time
Here, some people propose to use dry coils to bear the indoor heat load, and the solution dehumidification system controls the humidity to ensure a hot and humid environment in the room. However, due to the complex structure of the solution dehumidification system and the unstable performance of dehumidification materials, it is not suitable for use in current air conditioning systems. widely

Method used

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  • Air conditioner temperature and humidity decoupling system and control method thereof

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Embodiment 1

[0031] Example 1: Air-conditioning temperature and humidity decoupling system

[0032] Such as figure 1 As shown, the air-conditioning temperature and humidity decoupling system in this embodiment is to adjust the inlet water temperature of the air-conditioning terminal coil and the air volume sent into the room according to the change of cooling and humidity loads. This system is installed on the air-conditioning unit 1, including The air-conditioning terminal coil 2 also includes: (1) a temperature sensor 12 and a humidity sensor 11 arranged at the air-conditioning terminal return air outlet, respectively used to collect the temperature and humidity of the air-conditioning return air outlet 4; The valve control module 15 is used to receive the real-time relative humidity signal of the return air outlet 4, and output the control signal for adjusting the inlet and outlet water temperature of the coil 2 according to the real-time relative humidity signal; (3) the water pump con...

Embodiment 2

[0034] Embodiment 2: Control method of air-conditioning temperature and humidity decoupling system

[0035] The control method of an air-conditioning temperature and humidity decoupling system in this embodiment is used to control and adjust the indoor temperature and humidity within a set range, and the method specifically includes the following steps:

[0036] (1) The set value of the return air relative humidity (such as 65%) is given in the valve control module, and the set value of the return air temperature (such as 25° C.) is given in the fan control module. When the end of the air conditioner is running, the air switch 14 in the control cabinet 13 is closed, the fan 3 is running normally, the valve control module 15 outputs a control signal to open the outlet pipe end on the electric three-way valve 10 on the coil outlet pipe 8, and the valve on the bypass pipe 9 Closed, the water pump 6 receives the control signal output by the water pump control module 17 and starts ...

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Abstract

The invention relates to the technical field of building energy conservation and air conditioner ventilation control, in particular to an air conditioner temperature and humidity decoupling system anda control method thereof. According to the system, temperature and humidity measurement signals are collected, the water inlet temperature of a tail end coiled pipe and the amount of air entering a room are adjusted according to changes of cold and wet loads, and temperature and humidity decoupling control of an air conditioner system and indoor thermal comfort control are completed. On the otherhand, the system utilizes an electric three-way valve and a variable frequency fan to control the water inlet temperature and the water outlet temperature of the tail end coiled pipe and the air supply amount, then the relative humidity and temperature of the room are kept constant, reheating is not needed, and unnecessary energy waste is avoided. The air conditioner temperature and humidity decoupling system is simple in structure, automatic in control, reliable in performance, high in energy-saving potential and capable of being widely applied in building air conditioning systems.

Description

technical field [0001] The invention relates to the technical fields of building energy saving and air-conditioning ventilation control, in particular to an air-conditioning temperature-humidity decoupling system and a control method thereof. Background technique [0002] The indoor thermal and humid environment has a great impact on the thermal comfort of the human body. With the improvement of the quality of life, a single temperature control can no longer meet people's thermal comfort needs. In the air conditioning system, the temperature and humidity control of the room has the characteristics of strong nonlinearity and strong coupling. The traditional air conditioning system (such as the primary return air system) generally uses the end coil to cool and dehumidify the air to control the temperature, and heat it through the reheating device. Air is used to control the temperature, which will cause a large waste of energy and the system structure is also complicated. If ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/77F24F11/85F24F11/89F24F110/10F24F110/20
CPCY02B30/70
Inventor 徐新华高佳佳阮长龙
Owner 湖北中航安智技术有限公司
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