A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source
Shower wastewater contains large amounts of heat, and recovering and utilizing shower wastewater heat energy to heat shower water is of great significance for energy saving. This paper proposed a gas engine heat pump water heater (GEHPWH) using shower wastewater as the heat source. Thermodynamic mod...
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doaj-94ba4a600a9d4444b5a22270a16530d12020-11-24T22:16:05ZengIWA PublishingJournal of Water Reuse and Desalination2220-13192408-93702019-09-019331031810.2166/wrd.2019.002002A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat sourceFengguo Liu0Zhenxi Ma1Rui Zhang2 School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin 300384, China and Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin 300384, China and Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China School of Energy and Safety Engineering, Tianjin Chengjian University, Tianjin 300384, China and Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China Shower wastewater contains large amounts of heat, and recovering and utilizing shower wastewater heat energy to heat shower water is of great significance for energy saving. This paper proposed a gas engine heat pump water heater (GEHPWH) using shower wastewater as the heat source. Thermodynamic models were built to evaluate the performance of the GEHPWH and compare it with an electrical heat pump water heater (EHPWH). The results show that the GEHPWH has higher hot water outlet temperature and coefficient of performance (COP) than the EHPWH under the same conditions. Furthermore, the GEHPWH can maintain stable hot water outlet temperature and higher primary energy ratio (PER) in variable water flow mode, which resolves the issue that the conventional EHPWH needs an auxiliary heat source. Finally, based on a case, the GEHPWH reveals smaller energy consumption and lower operating costs compared with three other conventional hot-water schemes.http://jwrd.iwaponline.com/content/9/3/310gas engine heat pump water heateroptimizationshower wastewater heat recoverythermodynamic |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fengguo Liu Zhenxi Ma Rui Zhang |
spellingShingle |
Fengguo Liu Zhenxi Ma Rui Zhang A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source Journal of Water Reuse and Desalination gas engine heat pump water heater optimization shower wastewater heat recovery thermodynamic |
author_facet |
Fengguo Liu Zhenxi Ma Rui Zhang |
author_sort |
Fengguo Liu |
title |
A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source |
title_short |
A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source |
title_full |
A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source |
title_fullStr |
A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source |
title_full_unstemmed |
A study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source |
title_sort |
study on the design and analysis of a gas engine heat pump water heater using shower wastewater as heat source |
publisher |
IWA Publishing |
series |
Journal of Water Reuse and Desalination |
issn |
2220-1319 2408-9370 |
publishDate |
2019-09-01 |
description |
Shower wastewater contains large amounts of heat, and recovering and utilizing shower wastewater heat energy to heat shower water is of great significance for energy saving. This paper proposed a gas engine heat pump water heater (GEHPWH) using shower wastewater as the heat source. Thermodynamic models were built to evaluate the performance of the GEHPWH and compare it with an electrical heat pump water heater (EHPWH). The results show that the GEHPWH has higher hot water outlet temperature and coefficient of performance (COP) than the EHPWH under the same conditions. Furthermore, the GEHPWH can maintain stable hot water outlet temperature and higher primary energy ratio (PER) in variable water flow mode, which resolves the issue that the conventional EHPWH needs an auxiliary heat source. Finally, based on a case, the GEHPWH reveals smaller energy consumption and lower operating costs compared with three other conventional hot-water schemes. |
topic |
gas engine heat pump water heater optimization shower wastewater heat recovery thermodynamic |
url |
http://jwrd.iwaponline.com/content/9/3/310 |
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