Study on the performence of solar energy and heat pump complementary drive desiccant wheel evaporative cooling air conditioning system in data center
In view of the problem that data center evaporative cooling technology limited by the ambient wet bulb temperature,a solar energy and heat pump complementary drive the desiccant wheel evaporative cooling air conditioning system in data center was proposed.The system uses the waste heat of photovoltaic modules to provide thermal energy complementary heat pump system to drive the dehumidification regeneration.According to the outdoor meteorological conditions,the system can realize three operation modes:fresh air,evaporative cooling and dehumidification & evaporative cooling.The TRNSYS software is used to simulate the thermal,power and energy consumption characteristics of the three typical regional data centers in Shanghai,Guangzhou and Kunming.The results show that in the typical daily dehumidification+evaporative cooling mode in Shanghai,Guangzhou and Kunming area,the desiccant wheel pretreatment reduced the air wet bulb temperature by 10.9 ℃,11.6 ℃ and 10.3 ℃ on average compared with the outdoor wet bulb temperature.The average typical monthly system COP values in Shanghai,Guangzhou and Kunming were 4.9,5.1 and 3.6,respectively,and the maximum instantaneous COP value was 12.1,11.4 and 8.1.
万方数据
维普
