Experimental investigation on a heat pump water heater using R744/R290 mixture for domestic hot water

被引：50

作者：

Ju, Fujun ^{[1
,2
]}

Fan, Xiaowei ^{[2
]}

Chen, Yaping ^{[1
]}

Wang, Tuanjie ^{[2
]}

Tang, Xiangyang ^{[2
]}

Kuang, Amin ^{[2
]}

Ma, Shengfei ^{[2
]}

机构：

[1] Southeast Univ, Key Lab Energy Thermal Convers & Control, Sch Energy & Environm, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China

[2] Zhongyuan Univ Technol, Sch Energy & Environm, Zhengzhou 450007, Henan, Peoples R China

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2018年 / 132卷

关键词：

Heat pump water heaters; Substitute refrigerants; Zeotropic mixtures; R744/R290; COP; Temperature profile; PERFORMANCE ASSESSMENT; REFRIGERATION SYSTEMS; CARBON-DIOXIDE; CYCLES WORKING; CO2; SIMULATION; HYDROCARBONS; TEMPERATURE; BUILDINGS; PROPANE;

D O I：

10.1016/j.ijthermalsci.2018.05.043

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The natural eco-friendly mixture of R744/R290 was investigated to replace R22 in a fully instrumented water water heat pump test rig. The test results show that the R744/R290 mixture with optimum concentration of 12%/88% (M-opt) is the suitable working medium for heat pump water heaters because of its higher COP and heating capacity than those of R22 under variable conditions as well as the nominal working condition. The heat pump system with M-opt can supply higher temperature hot water and promote compressor lifetime in substitution of R22. The test results also reveal that the heating COPs of heat pump system with M-opt are 4.98-11.00% higher than those of R22 at the heat sink outlet temperature ranging from 45 degrees C to 65 degrees C, and the heat sink outlet temperature has obvious effect on the system efficiency but little on the heating capacity.

引用

页码：1 / 13

页数：13

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