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.