R410A充注量对直膨式太阳能热泵热水器性能的影响

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (03): 370-375.

R410A充注量对直膨式太阳能热泵热水器性能的影响

孔祥强1，林琳1，李瑛1，张东2，杨前明1

（1.山东科技大学机械电子工程学院，山东青岛 266590；2.兰州理工大学能源与动力工程学院，兰州 730050）

收稿日期:2012-04-09 出版日期:2013-03-28 发布日期:2013-03-28
基金资助:
山东省高等学校科技计划资助项目（J11LD63），山东省泰山学者建设工程专项经费资助项目

Effect of Refrigerant Charge on the Performance of a Direct Expansion Solar Assisted Heat Pump Water Heater Using R410A

KONG Xiang-Qiang-1, LIN Lin-1, LI Ying-1, ZHANG Dong-2, YANG Qian-Ming-1

(1.College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China； 2.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

Received:2012-04-09 Online:2013-03-28 Published:2013-03-28

摘要/Abstract

摘要： 基于太阳能集热/蒸发器和冷凝器的分布参数均相流动模型、压缩机和电子膨胀阀的集总参数模型和系统制冷剂充注量模型，编制了以R410A为工质的直膨式太阳能热泵热水器系统性能模拟程序.在集热器出口过热度维持不变的条件下，计算了不同充注量下系统热性能参数，分析了充注量变化对系统热性能的影响特性.结果表明：随着制冷剂充注量的不断增加，蒸发压力和加热时间逐渐减小，压缩机瞬时功率和集热器集热效率逐渐增大；而且，制冷剂充注量的变化对冷凝压力和系统性能系数(COP)的影响很小.

关键词: 太阳能热泵, 直膨式, 制冷剂充注量, 性能模拟

Abstract: Based on the distributed parameter and homogeneous flow models of solar collector/evaporator and condenser, the lumped parameter models of compressor and electronic expansion valve and the refrigerant charge model, a simulation program of a direct expansion solar assisted heat pump water heater (DXSAHPWH) system using R410A was coded. For a fixed superheat degree at the collector outlet, the thermal performance parameters of the DX-SAHPWH system were obtained under different refrigerant charge conditions, and the effects of changing the refrigerant charge on the thermal performance of the system were analyzed. The results show that as the refrigerant charge increases, the evaporating pressure and heating time of the system decrease, but the instantaneous power of the compressor and the thermal efficiency of the collector increase. What’s more, the influences of the refrigerant charge on the condensing pressure and coefficient of performance (COP) of the system are very small.

Key words: solar assisted heat pump, direct expansion, refrigerant charge, performance simulation

中图分类号:

TK 11.4

孔祥强1, 林琳1, 李瑛1, 张东2, 杨前明1. R410A充注量对直膨式太阳能热泵热水器性能的影响[J]. 上海交通大学学报（自然版）, 2013, 47(03): 370-375.

KONG Xiang-Qiang-1, LIN Lin-1, LI Ying-1, ZHANG Dong-2, YANG Qian-Ming-1. Effect of Refrigerant Charge on the Performance of a Direct Expansion Solar Assisted Heat Pump Water Heater Using R410A[J]. Journal of Shanghai Jiaotong University, 2013, 47(03): 370-375.

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[1]	孔祥强，李俊枭，李瑛. 直膨式太阳能热泵热水器不同工质的性能分析[J]. 上海交通大学学报（自然版）, 2016, 50(04): 506-513.
[2]	孔祥强，张东，李瑛，林琳，杨前明. 制冷剂充注量对太阳能热泵热水器性能的影响 [J]. 上海交通大学学报（自然版）, 2010, 44(10): 1372-1377.