EXPERIMENTAL STUDY ON EFFECT OF HEATING WATER TEMPERATURE ON HEATING PERFORMANCE OF LOW-TEMPERATURE AIR SOURCE HEAT PUMP

Li Lulu; Yin Yingde; Liu Shijie; Zhu Dongsheng; Tan Lianyuan

doi:10.19912/j.0254-0096.tynxb.2021-1501

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (4) : 377-383. DOI: 10.19912/j.0254-0096.tynxb.2021-1501

EXPERIMENTAL STUDY ON EFFECT OF HEATING WATER TEMPERATURE ON HEATING PERFORMANCE OF LOW-TEMPERATURE AIR SOURCE HEAT PUMP

Li Lulu^1-3, Yin Yingde⁴, Liu Shijie^1,3, Zhu Dongsheng^1,3, Tan Lianyuan⁵

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Abstract

To study the heating performance of a commercial ASHP with different water-supply temperatures at low ambient temperature, a novel full-scale dual-system ASHP prototype was developed. The liquid secondary refrigerant（LSR） method was used to calculate the heating capacity. The prototype can be used as a commercial product for industrialization. Experiment results show that at the ambient temperature of -25℃, with the hot-water-supply temperature varying from 41 to 55 ℃, the heating capacity of the prototype is reduced from 29.57 to 19.71 kW, with33.33% reduction. The consumption power increases from 19.20 to 23.36 kW, with increasement of 21.69%. And the COP_h is reduced from 1.54 to 0.84 by 45.45%. This study can provide a beneficial reference for the application of commercial ASHP at the low temperature environment.

Key words

air-source heat pump （ASHP） / low ambient temperature / coefficient of performance（COP） / liquid secondary refrigerant（LSR） method

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Li Lulu, Yin Yingde, Liu Shijie, Zhu Dongsheng, Tan Lianyuan. EXPERIMENTAL STUDY ON EFFECT OF HEATING WATER TEMPERATURE ON HEATING PERFORMANCE OF LOW-TEMPERATURE AIR SOURCE HEAT PUMP[J]. Acta Energiae Solaris Sinica. 2023, 44(4): 377-383 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1501

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