Improvement of humidity swing air conditioning system improvement of high efficiency desiccant air conditioning system

摘要

Open cycle desiccant-cooling system (DCS), which is operated by using exhaust heat energy below 373K, has been known as one of the most important non-freon non-electric cooling technologies. Its operating condition has been discussed by using computer simulation and widely improved co-efficiency of the system and operating conditions1,2). Although water spraying and evaporating system of DCS were used for cooling, the size and co-efficiency of DCS system has not been improved sufficiently. We proposed and studied experimentally a new type of Humidity Swing Air-conditioning system (HSA) which consists of desorption cooling system in the adsorbate instead of cooling system by water spraying. Cooling temperature 10 K is obtained and reduction of regeneration heat energy by desorption cooling brings COP=1.03. These results indicated that the proposed HSA could be operated as a high efficiency cooling system.