Performance investigation of air-source heat pump heating system with novel thermal storage refrigerant-heated panel

doi:10.11949/0438-1157.20200165

Abstract

Abstract:

In this paper, a novel refrigerant-heated panel (RHP) is proposed for air-source heat pump (ASHP) heating system to replace the high emission heating systems. Experiments are conducted to test the thermal performance of the RHP and system operation characteristics. Meanwhile, the system efficiency and the economic performance of the proposed system are discussed. The experimental results show that the heating capacity of the RHP is 1044 W at the condensation temperature of 39℃, and the heat stored in the RHP is more than 1000 kJ under the heating conditions. When the outdoor air temperature is 8℃, the system COP is as high as 3.7. In addition, for a residential room of 20 m², the initial investment cost and total operating cost of the system??s heating are 3174.7 CNY and 510.7 CNY, respectively, and it has greater competitiveness in the winter heating field of residential buildings.

Key words: experimental validation, air-source heat pump, heating performance analysis, heat transfer, economics

摘要：

针对现有的空气源热泵冬季供热系统，提出了一种使用新型蓄热型直接冷凝式加热板（RHP）的空气源热泵供热系统，并测试了RHP的热性能和系统的运行特性，同时分析了系统的效率和经济性。实验结果表明，在39℃的冷凝温度下，RHP的热容量高达1044 W，RHP的蓄热量大于1000 kJ。在室外空气温度为8℃时，系统COP高达3.7。此外，对于20 m²的居住房间而言，该系统的供暖初始投资成本和总运行成本分别为3174.7 CNY和510.7 CNY，在居住建筑冬季供暖领域具有较大的竞争力。

关键词: 实验验证, 空气源热泵, 热性能分析, 传热, 经济

CLC Number:

TK 519

Suola SHAO, Huan ZHANG, Shijun YOU, Wandong ZHENG. Performance investigation of air-source heat pump heating system with novel thermal storage refrigerant-heated panel[J]. CIESC Journal, 2020, 71(8): 3480-3489.

邵索拉, 张欢, 由世俊, 郑万冬. 带有蓄热型直接冷凝式加热板的空气源热泵系统性能研究[J]. 化工学报, 2020, 71(8): 3480-3489.

Figures/Tables 19

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设备	测量参数	量程	精度
科氏流量计DMF-1-1-A	流量	0 ~ 100 kg/h	0.2% FS
压力传感器PT2301-7/16	压力	0 ~ 45 bar	0.1% FS
T型热电偶	温度	-50 ~ 150℃	±0.5℃
德图Testo	湿度	2% ~ 98% RH	±2% RH
电能表DTS253	输入功率	0.01 ~ 999.99 kW·h	0.01 kW·h

设备	测量参数	量程	精度
科氏流量计DMF-1-1-A	流量	0 ~ 100 kg/h	0.2% FS
压力传感器PT2301-7/16	压力	0 ~ 45 bar	0.1% FS
T型热电偶	温度	-50 ~ 150℃	±0.5℃
德图Testo	湿度	2% ~ 98% RH	±2% RH
电能表DTS253	输入功率	0.01 ~ 999.99 kW·h	0.01 kW·h

测量参数	实验最大误差/%
表面温度 (T_s)	±1.8
制冷剂压力 (p)	±0.19
制冷剂流量 (G)	±0.38
供热量 (Q_con)	±1.68
辐射换热量 (Q_r)	±3.82
自然对流换热量 (Q_nc)	±2.63
系统效率 (COP)	±2.43

测量参数	实验最大误差/%
表面温度 (T_s)	±1.8
制冷剂压力 (p)	±0.19
制冷剂流量 (G)	±0.38
供热量 (Q_con)	±1.68
辐射换热量 (Q_r)	±3.82
自然对流换热量 (Q_nc)	±2.63
系统效率 (COP)	±2.43

国别	居住建筑供热能耗^①	市场价/CNY				增值税与劳动力成本/CNY				ICC/CNY
国别	居住建筑供热能耗^①	热泵	制冷剂	铜管	相变材料	热泵	制冷剂	铜管	相变材料	ICC/CNY
美国	3.8 (85~94)^[23]	1931.3	70.4	628.6	527.9	231.8	6.9	163.5	63.5	3623.9
日本	6.6 (147~162)^[24]	2526.8	138.7	1178.5	989.5	302.9	13.8	306.4	118.7	5575.3
中国	2.6 (58~64)^[25,26]	1544.2	55.9	628.6	527.9	185.6	5.5	163.5	63.5	3174.7