小型相变蓄冷空调性能的实验研究  

Experimental Study on the Performance of Small-sized Cool Storage Air Conditioning with Phase Change Materials

作　　者：吴东波[1] 张泉[1] 陈晓明[1] 廖曙光 沙正勇 

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]长沙麦融高科股份有限公司,长沙410015 [3]香江科技股份有限公司,湖南扬中212132

出　　处：《建筑科学》2017年第6期62-67,共6页Building Science

基　　金：国家国际科技合作专项"物理储能制冷系统关键技术研究与示范"(2015DFA61170);湖南省建筑节能与环境控制关键技术协同创新中心重大科研项目"数据中心水冷多联热管系统的开发与示范"

摘　　要：研制了一种小型相变蓄冷空调,并以R22为制冷工质,测试了机组温度、压力和输入功率,研究了常规空调工况以及空调蓄冷工况在不同制冷剂充注量下的性能。实验结果表明:随着充注量由1 000 g增加到2 200 g,机组在常规空调工况下的吸排气压力均逐渐升高,而在空调蓄冷工况下的吸排气压力均先降低后升高。同时,常规空调工况的制冷量和COPa以及空调蓄冷工况的平均蓄冷速率和COPs均呈现先增大后减小的趋势。当充注量为1 600g时,常规空调工况下的制冷量和COPa达到最大,而空调蓄冷工况下平均蓄冷速率和COPs的最佳充注量为1 200 g。充注量由1 200 g增加到1 600 g时,常规空调工况的制冷量和COPa分别提高了4.9%和4.1%,而空调蓄冷工况的平均蓄冷速率和COPs分别降低了1.7%和3.2%。A small-sized cool storage air conditioning with phase change materials working with R22 was developed. The temperature, pressure and input power were measured. The performance of refrigeration circulation at different refrigerant charge in ordinary air conditioning （OAC） mode and cold charging （CC） mode were investigated. The results show that the suction and exhaust pressure in OAC mode both increased gradually as refrigerant charge increased from 1 , 000 g to 2,200 g; and the pressure in CC mode increased first and then decreased. At the same time, the cooling capacity and COP in OAC mode and the average cold storage rate and COP~ in CC mode both firstly increased and then decreased. When refrigerant charge was I ,600 g, the cooling capacity and COPa reached their maximum simuhaneously in OAC mode. But the optimal refrigerant charge in CC mode was 1200 g. As the refrigerant charge increased from 1,200 g to 1,600 g, the cooling capacity and COP in OAC mode increased by 4, 9% and 4.1% , respectively. Accordingly, the average cold storage rate and COP in CC mode decreased by 1.7% and 3.2% , respectively.

关 键 词：相变蓄冷空调 充注量 制冷量 蓄冷速率 性能系数 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]