江苏大学学报（自然科学版）2011，Vol.32Issue(6)：667-671,5.DOI:10.3969/j.issn.1671-7775.2011.06.010
蓄能型太阳能热泵热水器性能系数的分析
Coefficient of performance of solar heat pump water heater with energy storage
摘要
Abstract
To solve the problem that solar heat pump water heater was prone to be affected by weather, a novel water heater integrated with collection, storage and evaporation was proposed. The principle, characteristics, operating modes and structure of the collector-storage-evaporator system were investigated. Using phase change material of decanoic acid to store solar radiation in sunny days as low-temperature source, hot water was produced at night or in continuous rainy days. Thermal efficiency of heat pump system was increased significantly, and the operating unstableness of the heat pump system caused by interval solar energy was also solved. Experiments under different conditions and operating modes in spring were conducted, and the coefficient of performance ( COP) of the system was analyzed. The results indicate that COP of this novel solar heat pump water heater with energy storage is higher than that of ordinary solar heat pump water heater at the same weather condition. The average COP of this system is 7. 56 with maximum of 8. 9 for average solar radiation of 592 W·m-2. COP can also reach 6.4 even at night, which means that weather has slight influence on COP.关键词
太阳能热泵热水器/集热-蓄能-蒸发器/相变蓄能材料/性能系数/稳定性Key words
solar heat pump water heater/solar collector-storage-evaporator structure/phase change material/coefficient of performance/stability分类
建筑与水利引用本文复制引用
吴薇,卫梁彦,程清,王玲珑..蓄能型太阳能热泵热水器性能系数的分析[J].江苏大学学报（自然科学版）,2011,32(6):667-671,5.基金项目
江苏省高校自然科学基础研究项目(07 KJB480060) （07 KJB480060）
江苏省高校自然科学基础研究项目(09 KJB470005) （09 KJB470005）
