Analysis of solar liquid desiccant air-conditioning in hot-humid regions

摘要

Bases on fresh air pretreatment by natural cold source, return air as renewable air, solar energy as renewable heat source, designed compound solar liquid desiccant air conditioning system (CSLDAS), established a mathematical model, analyzed the effects of parameters on desiccant performance and operating energy. The results show that reducing the dehumidifier air inlet humidity ratio and temperature would cut down the transmission energy and initial investment significantly, decreasing the renewable air humidity ratio would improve the efficiency and the concentration of desiccant effectively, and which could bring down the renewable heat source temperature. Consequently, especially in hot and humid regions, preliminary design of liquid desiccant air-conditioning should consider the hot and humid climatic facilities, make it more economical and energy-saving. As a whole, this study could provide the theoretical guidance for application of liquid desiccant air-conditioning.