Experimental Study on Domestic Heat Pump Water Heater with Waste Heat Recovery
To recover waste heat from household bath wastewater and improve energy efficiency, a heat pump water heater with waste heat recovery was designed. Experimental benches were set up for experimental studies. The experiment was carried out with an inlet water temperature of 16 °C and an outlet water t...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2019-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2019.03.079 |
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| Summary: | To recover waste heat from household bath wastewater and improve energy efficiency, a heat pump water heater with waste heat recovery was designed. Experimental benches were set up for experimental studies. The experiment was carried out with an inlet water temperature of 16 °C and an outlet water temperature of 36–46 °C to study the effects of changing parameters, such as the refrigerant charge amount, water output, heating capacity, and heating coefficient of performance (COP). The experimental results show that increasing the refrigerant charge benefits the heating and heating COP stability. However, the maximum heating capacity is 7.9 kW, and the heating COP is 7.7 at the minimum refrigerant charge. For the outlet water temperature of 36–46 °C, the device can effectively recover the heat in the waste water, the heating output is stable at approximately 7.5 kW, and the heating COP is above 6.0. |
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| ISSN: | 0253-4339 |