An experimental investigation of refrigerant mixture R32/R290 as drop-in replacement for HFC410A in household air conditioners |
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| Affiliation: | 1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China;2. TCL Air Conditioner (Zhongshan) Co., Ltd, Zhongshan, 528427, China;1. College of Engineering, Sun Yat-Sen University, Guangzhou 510006, China;2. Midea Group, Foshan 510725, China;1. Dept. Mech. Eng., Baghdad Univ., Baghdad, Iraq;2. Dept. Mech. Eng., Babylon Univ., Hilla, Iraq;1. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2. Nanjing TICA Climate Solutions Co., Ltd, Nanjing, China |
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| Abstract: | In the present paper, the refrigerant mixture R32/R290 (68%/32% by weight) is investigated as the drop-in replacement for R410A in household air conditioners. The GWP of it is only 22% of that of R410A. Theoretical and experimental investigations are conducted on the performance of the air conditioners working with both R32/R290 and R410A. Experimental results show that the refrigerant charge amount of R32/R290 is reduced by 30.0%–35.0%; the cooling and heating capacities are increased by 14.0%–23.7%. For further reducing charge amount and flammability, the micro-channel heat exchanger (condenser) is employed to replace the finned tube one. Compared with the R32/R290 system using finned tube heat exchanger, the R32/R290 charge amount and the power consumption are reduced by 34.1% and 0.4%, respectively; the cooling capacity and the COP are increased by 6.4% and 6.8%, respectively. |
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| Keywords: | Mixed refrigerant R32/R290 R410A Refrigerant charge amount COP Micro-channel heat exchanger Mélange de frigorigène R32/R290 R410A Quantité de charge en frigorigène COP d'échangeur thermique à microcanaux |
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