Experimental performance analysis of a direct-expansion solar-assisted heat pump water heater with R134a in summer

• Published in: International journal of refrigeration Vol. 91; pp. 12 - 19
• Main Authors: Kong, Xiangqiang, Sun, Penglong, Dong, Shandong, Jiang, Kailin, Li, Ying
• Format: Journal Article
• Language: English
• Published: Paris Elsevier Ltd 01.07.2018; Elsevier Science Ltd
• Subjects: Ambient temperature; Direct expansion; Détente directe; Eau chaude; Evaporators; Experiment; Expérimentation; Gas expanders; Heat pumps; Hot water; Microchannels; Performance thermique; Pompe à chaleur assistée par l’énergie solaire; Pumps; Solar assisted heat pump; Solar radiation; Summer; Thermal performance; Water heaters; Water supply; Water tanks; Water temperature; Weather; Qingdao China; Solar assisted heat pump; Eau chaude; Pompe à chaleur assistée par l’énergie solaire; Experiment; Détente directe; Direct expansion; Thermal performance; Hot water; Expérimentation; Performance thermique

•A direct-expansion solar-assisted heat pump for domestic hot water supply was built.•A series of experiments were carried out under typical summer weather conditions.•The effects of various parameters on the system thermal performance are analyzed. A direct-expansion solar-assisted heat pump (DX-SA...