Model And Performance Optimization Of Solution Dehumidification Integrated Heat Pump System Based On Internally Cooled/heated Method

With increasing the conflict between supplying sustainable energy and people's going after comfort in living,developing an efficient and comfortable air conditioning system has become the primary task in HVAC industry.This paper presents a novel heat pump driven liquid dehumidification air conditioning system on the basis of internally heating/cooling liquid regenerator/dehumidifier to achieve the purposes of efficiently decreasing the temperature and humidity of processing air.Firstly,this paper compares ideal COP of heat pump driven liquid dehumidification air conditioning system,temperature and humidity independent control system and traditional heat pump system and finds the ideal COP of the heat pump driven liquid dehumidification air conditioning system is the maximum.Secondly,the numerical models of adiabatically heat pump driven liquid dehumidification air conditioning system are built and the effects of external and constructural parameters and heat recovery effieciency are simulated and analyzed.It turns out that the solution-solution and air-air heat recovery units promote the system COP significantly.Thirdly,by comparing the influence of cooling/heating measures on the performance of liquid dehumidification/regeneration,it is concludied that internal cooling/heating type device presents overwhelming advantage than adiabatic one.Lastly,the internal cooling/heating type dehumidification/regeneration devices are used in liquid dehumidification integrated heat pump device air conditioning system,and the applicability of it in each province in China as well as the optimized analysis of COP are researched.It shows that this system is increasingly superior to the adiabatic system at higher temperature and humidity.In most regions of China,COPs of the system is above 7.0,reaching the maximum value of 7.73 in Hong Kong as well as in Macao.In addition,although the adiabatic system is still recommended in s Tibet province and Qinghai province,the effects of the internally cooling/heating system are better in other regions,with an average increase of 31.9%.