摘要
基于新型空气-水双热源复合热泵系统(AWDSHPS-N),实验研究了AWDSHPS-N采用冷凝器出口制冷剂再冷却除霜(D-I)、低温热水除霜(D-II)、低温热水+冷凝器出口制冷剂再冷却除霜(D-Ⅲ)3种除霜模式进行除霜时对系统整体性能系数(COP)的影响,除霜期间系统运行特性及除霜所消耗的能量,并与逆循环除霜模式进行了对比分析。测试工况下的实验结果表明,除霜模式D-I和D-Ⅲ仅使系统整体COP较结霜运行期间的COP分别降低了0.42%和3.93%;D-II除霜期间系统的制热功率和COP分别较结霜运行期间提高了27.4%和17.8%。D-I、D-II和D-Ⅲ完成一次除霜能耗仅分别为逆循环除霜能耗的3.11%、34.78%和28.26%;采用此3种除霜模式时系统整体COP较采用逆循环除霜时分别提高了26.06%、29.79%和17.02%。
Based on the operation testing of new air-water double source composite heat pump system（AWDSHPS-N）, three defrosting modes were investigated under the same ambient condition, which included the condenser outlet refrigerant recooling defrosting（D-I）, the low temperature-hot water defrosting（D-II）, the condenser outlet refrigerant recooling and low temperature-hot water defrosting at same time（D-Ⅲ）. Total coefficient of performance（COP） of AWDSHPS-N was used to evaluate the influence of the three modes. The influence on the total COP, defrosting operating characteristics and energy consumption of D-I, D-II and D-Ⅲwere discussed and compared with those in the reverse-cycle defrosting mode, under the same ambient condition. The results of test conditions indicated that for D-I and D-II, the total COP can be decreased by 0.42% and 3.93%, respectively, compared with the COP of frosting period. The heating power and COP during D-II defrosting were 27.4% and 17.8% higher than those of frosting operation, respectively. The total COP of AWDSHPS-N choosing D-I, D-II and D-Ⅲ were 26.06%, 29.79% and 17.02% higher than that of verse-cycle defrosting, and the defrosting energy consumption of D-I, D-II and D-Ⅲ were only 3.11%, 34.78% and 28.26% of the reverse-cycle defrosting energy consumption.
作者
徐俊芳
赵耀华
全贞花
王会粉
赵会刚
王皆腾
XU Junfang1, 2, ZHAO Yaohua1, QUAN Zhenhua1, WANG Huifen2, ZHAO Huigang2, WANG Jieteng2(1.College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China; 2.Beijing Science and Technology Institute of Housing and Urban-Rural Development, Beijing 100021, Chin)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2018年第6期2646-2654,共9页
CIESC Journal
基金
国家科技支撑计划项目(2012BAA13B02)~~
关键词
复合热泵
再生能源
除霜
性能系数
优化
压缩机
composite heat pump
renewable energy
defrosting
coefficient of performance
optimization
compressor
