冬冷地区冰源热泵系统清洁供暖的经济性  

Economy of ice source heat pump clean heating system in cold winter zone

作　　者：王瑛滢 傅德坤 陈明彪[1,2,3] 宋文吉 冯自平[1,2,3,4,5] WANG Yingying;FU Dekun;CHEN Mingbiao;SONG Wenji;FENG Ziping(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences;CAS Key Laboratory of Renewable Energy;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,Guangdong,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Engineering Science,University of Science and Technology of China,Hefei 230026,Anhui,China)

机构地区：[1]中国科学院广州能源研究所 [2]中国科学院可再生能源重点实验室 [3]广东省新能源和可再生能源研究开发与应用重点实验室,广东广州510640 [4]中国科学院大学,北京100049 [5]中国科学技术大学工程科学学院,安徽合肥230026

出　　处：《储能科学与技术》2021年第4期1380-1387,共8页Energy Storage Science and Technology

基　　金：中国科学院战略性先导科技专项(A类)(XDA21070305);河南省中国科学院科技成果转移转化项目(202001)。

摘　　要：我国大部分冬冷地区没有集中供暖设施,采用高效热泵技术是实现清洁供暖的重要途径。基于过冷相变原理的直接蒸发式冰源热泵技术,利用近冰点水的相变潜热作为热源,具有采暖能效高、适用性广的特点。利用EES(engineeringequationsolver)软件模拟冰源热泵系统的运行性能,研究了循环工质、过冷水过冷度及冷凝温度对系统性能的影响。结果表明:在R22、R410A、R134A、R407C几种工质中,工质R22的系统能效COP_(sys)最高。针对采用R22工质的热泵系统,当过冷水过冷度由1.0 K提升至3.5 K时,COP_(sys)由2.87降低至2.71,降低了5.57%;当冷凝温度由35℃升高至55℃时,COP_(sys)明显降低,由3.4降至2.3,降低了32.4%。此外,为明确冰源热泵系统在冬冷地区的运行经济性,以上海和重庆200 m^(2)的居民建筑为对象,采用TRNSYS软件模拟两地的供暖负荷动态特性,进一步计算冰源热泵系统运行的耗水量及运行费用。结果表明:在整个供暖季中,冰源热泵系统在上海和重庆的单位供暖面积运行费用分别为12.7元/m^(2)和5.6元/m^(2),且冰源热泵在上海运行时的经济性更高。As there is no central heating in most cold winter zones in China,the use of efficient heat pumps is a promising way to achieve clean heating.Based on the principle of phase transformation under supercooling,ice source heat pump uses the latent heat of water near freezing point,which has high energy efficiency and wide applicability.EES(engineering equation solver)software was used to simulate the performance of the ice source heat pump.The influence of parameters such as refrigerant,supercooling degree and condensing temperature on system performance was studied.The results indicated that R22 refrigerant can achieve the highest COP_(sys) For the system using refrigerant R22,when subcooling degree of subcooled water increased from 1.0 K to 3.5 K,COP_(sys) decreased from 2.87 to 2.71,which decreased by 5.57%.When the condensing temperature increased from 35℃to 55℃,COP_(sys) decreased significantly from 3.4 to 2.3.What's more,to analyze the operation economy of ice source heat pump,the dynamic change of heating load of 200 m^(2) building in Shanghai and Chongqing was simulated by TRNSYS.The results showed that the operating costs per square meter during heating period were 12.7 yuan/m^(2) and 5.6 yuan/m^(2) respectively.Besides,ice source heat pumps were more economical when operating in Shanghai.

关 键 词：清洁供暖 过冷相变 冰源热泵 经济性分析 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]