Experimental Research of a Water-Source Heat Pump Water Heater System
The heat pump water heater (HPWH), as a portion of the eco-friendly technologies using renewable energy, has been applied for years in developed countries. Air-source heat pump water heaters and solar-assisted heat pump water heaters have been widely applied and have become more and more popular bec...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2018-05-01
|
Series: | Energies |
Subjects: | |
Online Access: | http://www.mdpi.com/1996-1073/11/5/1205 |
id |
doaj-122156e33140419186ac6e2929ec6bb5 |
---|---|
record_format |
Article |
spelling |
doaj-122156e33140419186ac6e2929ec6bb52020-11-25T00:24:56ZengMDPI AGEnergies1996-10732018-05-01115120510.3390/en11051205en11051205Experimental Research of a Water-Source Heat Pump Water Heater SystemZhongchao Zhao0Yanrui Zhang1Haojun Mi2Yimeng Zhou3Yong Zhang4School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212000, ChinaSchool of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212000, ChinaSchool of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212000, ChinaSchool of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212000, ChinaSchool of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212000, ChinaThe heat pump water heater (HPWH), as a portion of the eco-friendly technologies using renewable energy, has been applied for years in developed countries. Air-source heat pump water heaters and solar-assisted heat pump water heaters have been widely applied and have become more and more popular because of their comparatively higher energy efficiency and environmental protection. Besides use of the above resources, the heat pump water heater system can also adequately utilize an available water source. In order to study the thermal performance of the water-source heat pump water heater (WSHPWH) system, an experimental prototype using the cyclic heating mode was established. The heating performance of the water-source heat pump water heater system, which was affected by the difference between evaporator water fluxes, was investigated. The water temperature unfavorably exceeded 55 °C when the experimental prototype was used for heating; otherwise, the compressor discharge pressure was close to the maximum discharge temperature, which resulted in system instability. The evaporator water flux allowed this system to function satisfactorily. It is necessary to reduce the exergy loss of the condenser to improve the energy utilization of the system.http://www.mdpi.com/1996-1073/11/5/1205water-source heat pump water heatercyclic heatingevaporator water fluxexergy analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhongchao Zhao Yanrui Zhang Haojun Mi Yimeng Zhou Yong Zhang |
spellingShingle |
Zhongchao Zhao Yanrui Zhang Haojun Mi Yimeng Zhou Yong Zhang Experimental Research of a Water-Source Heat Pump Water Heater System Energies water-source heat pump water heater cyclic heating evaporator water flux exergy analysis |
author_facet |
Zhongchao Zhao Yanrui Zhang Haojun Mi Yimeng Zhou Yong Zhang |
author_sort |
Zhongchao Zhao |
title |
Experimental Research of a Water-Source Heat Pump Water Heater System |
title_short |
Experimental Research of a Water-Source Heat Pump Water Heater System |
title_full |
Experimental Research of a Water-Source Heat Pump Water Heater System |
title_fullStr |
Experimental Research of a Water-Source Heat Pump Water Heater System |
title_full_unstemmed |
Experimental Research of a Water-Source Heat Pump Water Heater System |
title_sort |
experimental research of a water-source heat pump water heater system |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2018-05-01 |
description |
The heat pump water heater (HPWH), as a portion of the eco-friendly technologies using renewable energy, has been applied for years in developed countries. Air-source heat pump water heaters and solar-assisted heat pump water heaters have been widely applied and have become more and more popular because of their comparatively higher energy efficiency and environmental protection. Besides use of the above resources, the heat pump water heater system can also adequately utilize an available water source. In order to study the thermal performance of the water-source heat pump water heater (WSHPWH) system, an experimental prototype using the cyclic heating mode was established. The heating performance of the water-source heat pump water heater system, which was affected by the difference between evaporator water fluxes, was investigated. The water temperature unfavorably exceeded 55 °C when the experimental prototype was used for heating; otherwise, the compressor discharge pressure was close to the maximum discharge temperature, which resulted in system instability. The evaporator water flux allowed this system to function satisfactorily. It is necessary to reduce the exergy loss of the condenser to improve the energy utilization of the system. |
topic |
water-source heat pump water heater cyclic heating evaporator water flux exergy analysis |
url |
http://www.mdpi.com/1996-1073/11/5/1205 |
work_keys_str_mv |
AT zhongchaozhao experimentalresearchofawatersourceheatpumpwaterheatersystem AT yanruizhang experimentalresearchofawatersourceheatpumpwaterheatersystem AT haojunmi experimentalresearchofawatersourceheatpumpwaterheatersystem AT yimengzhou experimentalresearchofawatersourceheatpumpwaterheatersystem AT yongzhang experimentalresearchofawatersourceheatpumpwaterheatersystem |
_version_ |
1725350788902944768 |