Abstract
This work presents the thermodynamic analysis of a direct-expansion solar-assisted heat pump to provide domestic hot water. An aluminum bare collector/evaporator and a compressor that uses refrigerant R600a as working fluid compose the system. Boiling and condensation temperatures are -8 and 54.4 °C, respectively. The system test is conducted under different weather conditions (i.e. rainy, cloudy and clear day), obtaining a variation of the coefficient of performance between 4.07 and 6.72 for an average solar radiation in the range of 451.6 and 721.5 W·m-2. The water final temperature attains a value between 47.7 and 58.6 °C. The system works with solar energy, both thermal and photovoltaic, to replace conventional energy sources conducing to decrease the carbon reduction factor (CFC) in 89.5 % being lower than the 1977.2 kg of annual CO2 emissions produced by an electric shower.
Original language | English |
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Title of host publication | ICR 2019 - 25th IIR International Congress of Refrigeration |
Editors | Vasile Minea |
Publisher | International Institute of Refrigeration |
Pages | 4827-4839 |
Number of pages | 13 |
ISBN (Electronic) | 9782362150357 |
DOIs | |
State | Published - 1 Jan 2019 |
Event | 25th IIR International Congress of Refrigeration, ICR 2019 - Montreal, Canada Duration: 24 Aug 2019 → 30 Aug 2019 |
Publication series
Name | Refrigeration Science and Technology |
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Volume | 2019-August |
ISSN (Print) | 0151-1637 |
Conference
Conference | 25th IIR International Congress of Refrigeration, ICR 2019 |
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Country/Territory | Canada |
City | Montreal |
Period | 24/08/19 → 30/08/19 |
Bibliographical note
Publisher Copyright:© 2019 International Institute of Refrigeration. All rights reserved.
Keywords
- Direct Expansion
- Heat Pump
- Solar Energy