TY  - EJOU
AU  - Yin, Lianglei 
AU  - Li, Shuhong 
AU  - Wu, Jun 
AU  - Zhu, Jianbing 
AU  - An, Jingjie 
AU  - Sheng, Wei 

TI  - Performance Simulation Research on Vapor Compression Condensation Heat Compensation Constant Temperature and Humidity Air Conditioning System under Low Humidity Conditions
T2  - Energy Engineering

PY  - 2026
VL  - 123
IS  - 9
SN  - 1546-0118

AB  - To reduce the reheating energy consumption in traditional constant temperature and humidity air conditioning systems, a constant temperature and humidity air conditioning system with condensation heat compensation function is proposed. This system performs reheating treatment on the supply air by combining condensation heat recovery with electric heating, realizing decoupled control of temperature and humidity and ensuring control accuracy. A system model and corresponding experimental platform are established to verify the model’s accuracy, and the experimental results show that the system has a temperature control accuracy of ±0.2°C and a relative humidity control accuracy of ±2%. Simulation results indicate that system performance is mainly affected by return air humidity and heat load. The evaporation temperature is mainly affected by return air humidity; when the return air humidity is lower than 25%, the evaporation temperature will reach the lower limit of 0°C, and the system will enter the extreme operating condition, while reducing the face velocity is conducive to increasing the evaporation temperature. The control parameters of heat recovery are mainly affected by return air humidity and heat-moisture load, which should be comprehensively considered during setting.
KW  - Constant temperature and humidity air conditioning system; condensing heat compensation; building energy efficiency; cooling dehumidification

DO  - 10.32604/ee.2026.084035