Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof
In hot climates, excessive heat gain through building roofs significantly increases cooling loads and energy consumption. This study aims to reduce roof heat gain by developing an innovative hybrid active slab with phase change material (PCM) panels and a geothermal well (HASP-GW). The HASP-GW syste...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | International Journal of Thermofluids |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666202724004324 |
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| author | Mohammed F.Mohammed Ali Yasser Abdel Latif Rassol Hamed Rasheed Ahmed Mohsin Alsayah Angham Fadil Abed Mohammed J. Alshukri Karrar K.Abdul Hussein Ahmed Al-Manea |
| author_facet | Mohammed F.Mohammed Ali Yasser Abdel Latif Rassol Hamed Rasheed Ahmed Mohsin Alsayah Angham Fadil Abed Mohammed J. Alshukri Karrar K.Abdul Hussein Ahmed Al-Manea |
| author_sort | Mohammed F.Mohammed Ali |
| collection | DOAJ |
| description | In hot climates, excessive heat gain through building roofs significantly increases cooling loads and energy consumption. This study aims to reduce roof heat gain by developing an innovative hybrid active slab with phase change material (PCM) panels and a geothermal well (HASP-GW). The HASP-GW system incorporates PCM panels and an active concrete slab embedded with water pipes as heat exchangers. Water at a constant temperature of 22 °C, sourced from a geothermal well, flows through these pipes to stabilize indoor temperatures. This research investigates the thermal performance of the HASP-GW with varying PCM transition temperatures and water flow rates using numerical simulations, validated against experimental results. The experimental setup involved two well-insulated test rooms (each 0.85 m × 0.85 m × 1 m); one equipped with the HASP-GW system and the other as a conventional comparison. Results showed that using the HASP-GW with a PCM transition temperature of 38–41 °C and a water flow rate of 1 L/min reduced the heat flux on inner surface of the roof, decrement factor, and inner surface temperature by 90.13 %, 0.127, and 16.24 °C, respectively, compared to a traditional roof. These findings indicate the potential of HASP-GW for energy-efficient roof cooling in hot climates. |
| format | Article |
| id | doaj-art-a92076061b4b4bc48d0c1a373858c116 |
| institution | Kabale University |
| issn | 2666-2027 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Thermofluids |
| spelling | doaj-art-a92076061b4b4bc48d0c1a373858c1162025-01-08T04:53:32ZengElsevierInternational Journal of Thermofluids2666-20272025-01-0125100993Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roofMohammed F.Mohammed Ali0Yasser Abdel Latif1Rassol Hamed Rasheed2Ahmed Mohsin Alsayah3Angham Fadil Abed4Mohammed J. Alshukri5Karrar K.Abdul Hussein6Ahmed Al-Manea7Engineering Technical College, Middle Technical University, Baghdad, IraqEngineering Technical College, Middle Technical University, Baghdad, IraqDepartment of Air Conditioning and Refrigeration, Faculty of Engineering, University of Warith Al-Anbiyaa, Karbala 56001, IraqRefrigeration & Air-conditioning Technical Engineering Department, College of Technical Engineering, The Islamic University, Najaf, IraqDepartment of Mechanical Engineering, Faculty of Engineering, Kufa University, 54002, Najaf, IraqDepartment of Mechanical Engineering, Faculty of Engineering, Kufa University, 54002, Najaf, IraqDepartment of power mechanical Engineering, AL-Amarah University College, Misan, IraqAl-Samawah Technical Institute, Al-Furat Al-Awsat Technical University, Al-Samawah 66001, Iraq; Corresponding author.In hot climates, excessive heat gain through building roofs significantly increases cooling loads and energy consumption. This study aims to reduce roof heat gain by developing an innovative hybrid active slab with phase change material (PCM) panels and a geothermal well (HASP-GW). The HASP-GW system incorporates PCM panels and an active concrete slab embedded with water pipes as heat exchangers. Water at a constant temperature of 22 °C, sourced from a geothermal well, flows through these pipes to stabilize indoor temperatures. This research investigates the thermal performance of the HASP-GW with varying PCM transition temperatures and water flow rates using numerical simulations, validated against experimental results. The experimental setup involved two well-insulated test rooms (each 0.85 m × 0.85 m × 1 m); one equipped with the HASP-GW system and the other as a conventional comparison. Results showed that using the HASP-GW with a PCM transition temperature of 38–41 °C and a water flow rate of 1 L/min reduced the heat flux on inner surface of the roof, decrement factor, and inner surface temperature by 90.13 %, 0.127, and 16.24 °C, respectively, compared to a traditional roof. These findings indicate the potential of HASP-GW for energy-efficient roof cooling in hot climates.http://www.sciencedirect.com/science/article/pii/S2666202724004324HybridPCMGeothermalTransientFluent |
| spellingShingle | Mohammed F.Mohammed Ali Yasser Abdel Latif Rassol Hamed Rasheed Ahmed Mohsin Alsayah Angham Fadil Abed Mohammed J. Alshukri Karrar K.Abdul Hussein Ahmed Al-Manea Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof International Journal of Thermofluids Hybrid PCM Geothermal Transient Fluent |
| title | Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof |
| title_full | Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof |
| title_fullStr | Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof |
| title_full_unstemmed | Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof |
| title_short | Hybrid active slab with outer PCM Panels – Geothermal well to reduce the heat gain of a building roof |
| title_sort | hybrid active slab with outer pcm panels geothermal well to reduce the heat gain of a building roof |
| topic | Hybrid PCM Geothermal Transient Fluent |
| url | http://www.sciencedirect.com/science/article/pii/S2666202724004324 |
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