摘要
将相变蓄热装置与空气源热泵空调系统进行结合,主要研究在部分冷凝热回收模式下,相变蓄热箱中分别采用单一相变材料(纯石蜡)和复合相变材料(纯石蜡/泡沫铜)进行冷凝热回收的试验。通过试验数据比较加入促进导热材料前后蓄热材料在进行部分冷凝热回收时的蓄热温变速率,以及系统的吸排气压力、制冷能效比、综合能效系数等系统参数的改善情况。结果表明:空气源热泵空调系统在部分冷凝热回收模式下,复合相变材料与单一相变材料相比,蓄热速率提升了6.5%,温差减少了44.1%,温度分布更为均匀;系统性能中,制冷性能系数(EER)提升4.1%,综合能效系数(COPt)提升30.5%,各项指数在复合相变材料蓄热系统中均有提升。试验数据和结论为复合相变材料蓄热的推广及进一步研究提供参考。
The phase change thermal storage device was combined with air source heat pump air conditioning system to mainly study the condensing heat recovery experimentally under mode of partial condensing heat recovery by using the single phase change material(pure paraffin)and composite phase change material(pure paraffin/foamed copper)in the phase change heat storage tank.Through the experimental data,the improvements in system parameters such as change rates of heat storage temperature of the heat storage material during partial condensing heat recovery as well as suction and exhaust pressure,refrigeration energy efficiency ratio and comprehensive energy efficiency coefficient of the system were compared with/without addition of thermal conductive materials.The results show that the heat storage rate of the composite phase change material was increased by 6.5%,and the temperature difference was decreased by 44.1%,and the temperature distribution was more uniform compared with those of single phase change material when the air source heat pump air-conditioning system was under partial condensation heat recovery condition.In terms of system performance,EER and COPt was increased by 4.1% and 30.5%,respectively,and all values of heat storage system with composite phase change materials were improved.The experimental results and conclusions provide reference for the promotion and further research of heat storage with composite phase change materials.
作者
陈华
李戈
杨亚星
柳秀丽
刘园园
闫佳
Chen Hua;Li Ge;Yang Yaxing;Liu Xiuli;Liu Yuanyuan;Yan jia(Tianjin Key Kaboratory of Refrigeration Technology,Tianjin University of Commerce,Tianjin 300134,China)
出处
《流体机械》
CSCD
北大核心
2019年第9期72-77,共6页
Fluid Machinery
关键词
热泵空调系统
相变蓄热
相变材料
蓄热特性
试验研究
heat pump air-conditioning system
phase change heat storage
phase change materials
heat storage characteristics
experimental study
作者简介
陈华(1972),女,教授,博士,主要从事空调系统节能优化的研究,通信地址:300134天津市北辰区天穆镇天津商业大学天津市制冷技术重点实验室,E-mail:florahchen@163.com。
