Abstract:

Based on the theory of independent control for temperature and humidity, according to the climatic conditions in hot-humid areas, the natural cold water is used for pretreatment of fresh air, so as to decrease the air temperature and moisture at the inlet of dehumidifier. The indoor exhaust is used as regeneration air and the solar energy is used as regeneration heat source to regenerate desiccant. In this study, a compound solar liquid desiccant air-conditioning system (CSLDAS) is designed, and heat-mass transfer equations are established. The performances of dehumidification/regeneration and energy consumption of CSLDAS are analyzed with numerical simulation. Results indicate that the CSLDAS can use a variety of renewable energy, reduce the energy consumption effectively, enhance the dehumidification/regeneration capacity of the dehumidifier/regenerator, and reduce the dependence on solar radiation intensity. This study may provide theoretical guidance of energy conservation design for liquid desiccant air-conditioning in hot-humid areas.