Experimental investigation on an adsorption desalination system with heat and mass recovery between adsorber and desorber beds

An experimental equipment for adsorption desalination system with falling-film evaporator and heat recovery between adsorber and desorber beds was designed and established. The running performance of the system was investigated experimentally in steady condition. The yield and quality of product water were tested. The results show that the specific daily water production and performance ratio are 4.69 and 0.766, respectively. The heat transfer between tube and shell side in falling-film evaporator is mainly influenced by the amount of vapor desorbed from adsorbents. The utilization of heat recovery cannot increase the water production, but it can save energy. The heat recovery efficiency is 74.7% in every process of heat recovery. All indexes of produced water meet the standard of drinking water in China.