Open Access

ARTICLE

Performance Simulation Research on Vapor Compression Condensation Heat Compensation Constant Temperature and Humidity Air Conditioning System under Low Humidity Conditions

Lianglei Yin¹, Shuhong Li^1,*, Jun Wu², Jianbing Zhu², Jingjie An², Wei Sheng³

1 School of Energy and Environment, Southeast University, Nanjing, China
2 Jiangsu Institute of Metrology, Nanjing, China
3 Nanjing Bosen Technology, Nanjing, China

* Corresponding Author: Shuhong Li. Email:

(This article belongs to the Special Issue: Building Energy Consumption and Conservation)

Energy Engineering 2026, 123(9), 25 https://doi.org/10.32604/ee.2026.084035

Received 15 April 2026; Accepted 17 June 2026; Issue published 06 August 2026

Abstract

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.

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Keywords

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