An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance
This paper addresses the numerical and experimental performance analysis of a windows heat recovery system made of heat pipes. For modelling, the heat pipe is considered as a pseudo solid material with high value of effective thermal conductivity. An experimental investigation using a window heat re...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722003717 |
| _version_ | 1797902003489210368 |
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| author | Germilly Barreto Ke Qu Yuhao Wang Muriel Iten Saffa Riffat |
| author_facet | Germilly Barreto Ke Qu Yuhao Wang Muriel Iten Saffa Riffat |
| author_sort | Germilly Barreto |
| collection | DOAJ |
| description | This paper addresses the numerical and experimental performance analysis of a windows heat recovery system made of heat pipes. For modelling, the heat pipe is considered as a pseudo solid material with high value of effective thermal conductivity. An experimental investigation using a window heat recovery prototype was carried out to predict the value of effective thermal conductivity of the heat pipes and to validate the numerical model. After validation, a parametric analysis was conducted to investigate the performance of the recovery system for different working conditions (mass flow rate and temperature difference between exhausted and supplied air). Based on the performance obtained in the parametric analysis, energy performance in building and the impact on velocity and pressure distributions are also evaluated with the support of CFD analysis. It is found that the effectiveness of window heat recovery made of heat pipes depends on ventilation rate and temperature difference between exhausted and supplied air. Increasing ventilation rates and temperature differences decrease the effectiveness. For ventilation rate between 10–60 m 3/h and temperature difference 10–30 °C, effectiveness between 65%–95% and pressure drop 4–80 Pa are obtained. For performance in building, the power consumption can be reduced between 3%–24% and the thermal comfort increased. |
| first_indexed | 2024-04-10T09:10:55Z |
| format | Article |
| id | doaj.art-57d9c5d56a2e4230af070177b789ebbe |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-10T09:10:55Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-57d9c5d56a2e4230af070177b789ebbe2023-02-21T05:10:34ZengElsevierEnergy Reports2352-48472022-11-01832893305An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performanceGermilly Barreto0Ke Qu1Yuhao Wang2Muriel Iten3Saffa Riffat4Low Carbon & Resource Efficiency, R&Di, Instituto de Soldadura e Qualidade, 4415-491 Grijó, PortugalDepartment of Architecture and Built Environment, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK; Correspondence to: Buildings, Energy and Environment Research Group], University of Nottingham, Nottingham, NG7 2RD, UK.Department of Architecture and Built Environment, The University of Nottingham, University Park, Nottingham, NG7 2RD, UKLow Carbon & Resource Efficiency, R&Di, Instituto de Soldadura e Qualidade, 4415-491 Grijó, PortugalDepartment of Architecture and Built Environment, The University of Nottingham, University Park, Nottingham, NG7 2RD, UKThis paper addresses the numerical and experimental performance analysis of a windows heat recovery system made of heat pipes. For modelling, the heat pipe is considered as a pseudo solid material with high value of effective thermal conductivity. An experimental investigation using a window heat recovery prototype was carried out to predict the value of effective thermal conductivity of the heat pipes and to validate the numerical model. After validation, a parametric analysis was conducted to investigate the performance of the recovery system for different working conditions (mass flow rate and temperature difference between exhausted and supplied air). Based on the performance obtained in the parametric analysis, energy performance in building and the impact on velocity and pressure distributions are also evaluated with the support of CFD analysis. It is found that the effectiveness of window heat recovery made of heat pipes depends on ventilation rate and temperature difference between exhausted and supplied air. Increasing ventilation rates and temperature differences decrease the effectiveness. For ventilation rate between 10–60 m 3/h and temperature difference 10–30 °C, effectiveness between 65%–95% and pressure drop 4–80 Pa are obtained. For performance in building, the power consumption can be reduced between 3%–24% and the thermal comfort increased.http://www.sciencedirect.com/science/article/pii/S2352484722003717Building ventilationHeat recoveryWindow heat recoveryHeat pipeEnergy performanceThermal comfort |
| spellingShingle | Germilly Barreto Ke Qu Yuhao Wang Muriel Iten Saffa Riffat An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance Energy Reports Building ventilation Heat recovery Window heat recovery Heat pipe Energy performance Thermal comfort |
| title | An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance |
| title_full | An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance |
| title_fullStr | An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance |
| title_full_unstemmed | An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance |
| title_short | An innovative window heat recovery (WHR) system with heat pipe technology: Analytical, CFD, experimental analysis and building retrofit performance |
| title_sort | innovative window heat recovery whr system with heat pipe technology analytical cfd experimental analysis and building retrofit performance |
| topic | Building ventilation Heat recovery Window heat recovery Heat pipe Energy performance Thermal comfort |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722003717 |
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