Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities
Building design is a key aspect of attaining thermally effective buildings and noticeably contributes to decarbonizing the environment in hot locations. In this paper, the effect of window-to wall ratio (WWR) and thermal insulation thickness on the building energy has been studied numerically thro...
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| Format: | Article |
| Language: | English |
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University of Misan College of Engineering
2024-12-01
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| Series: | Misan Journal of Engineering Sciences |
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| Online Access: | https://uomisan.edu.iq/eng/mjes/index.php/eng/article/view/117 |
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| author | Qudama Al-Yasiri Ahmed Alshara Iman Al-Maliki Howraa Al-Saadi Sahar Al-Khafaji |
| author_facet | Qudama Al-Yasiri Ahmed Alshara Iman Al-Maliki Howraa Al-Saadi Sahar Al-Khafaji |
| author_sort | Qudama Al-Yasiri |
| collection | DOAJ |
| description | Building design is a key aspect of attaining thermally effective buildings and noticeably
contributes to decarbonizing the environment in hot locations. In this paper, the effect of window-to wall ratio (WWR) and thermal insulation thickness on the building energy has been studied
numerically through a validated room model by EnergyPlus. Five WWRs (from 10% to 50% with a
10% increment) are examined under each study location. Later, the influence of various thermal
insulation thicknesses (1, 3, 5, 7, and 9 cm) is investigated at the best WWR in each location
considering the maximum mean temperature reduction and time lag. The study findings indicated that
the best WWR for Al Amarah city is 20%, against 30% and 40% for Baghdad and Erbil cities,
respectively. However, the indoor mean temperature increased slightly as the WWR increased in each
city, influenced by the effect of the opaque elements. As for the effect of thermal insulation thickness,
it could be stated that 3 cm is the best thickness for all locations at the best WWR, achieving maximum
mean temperature reduction and time lag by 1.55 ºC and 3:33 h, 2.01 ºC and 4:03 h, 2.45 ºC and 5:57
h in Al Amarah, Baghdad and Erbil, respectively. |
| format | Article |
| id | doaj-art-e460b8f3fa724d1582055e192e321830 |
| institution | DOAJ |
| issn | 2957-4242 2957-4250 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | University of Misan College of Engineering |
| record_format | Article |
| series | Misan Journal of Engineering Sciences |
| spelling | doaj-art-e460b8f3fa724d1582055e192e3218302025-08-20T03:00:54ZengUniversity of Misan College of EngineeringMisan Journal of Engineering Sciences2957-42422957-42502024-12-013218219610.61263/mjes.v3i2.117117Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi CitiesQudama Al-Yasiri0Ahmed Alshara1Iman Al-Maliki2Howraa Al-Saadi3Sahar Al-Khafaji4Department of Mechanical Engineering, Faculty of Engineering, University of MisanUniversity of MisanUniversity of MisanUniversity of MisanUniversity of MisanBuilding design is a key aspect of attaining thermally effective buildings and noticeably contributes to decarbonizing the environment in hot locations. In this paper, the effect of window-to wall ratio (WWR) and thermal insulation thickness on the building energy has been studied numerically through a validated room model by EnergyPlus. Five WWRs (from 10% to 50% with a 10% increment) are examined under each study location. Later, the influence of various thermal insulation thicknesses (1, 3, 5, 7, and 9 cm) is investigated at the best WWR in each location considering the maximum mean temperature reduction and time lag. The study findings indicated that the best WWR for Al Amarah city is 20%, against 30% and 40% for Baghdad and Erbil cities, respectively. However, the indoor mean temperature increased slightly as the WWR increased in each city, influenced by the effect of the opaque elements. As for the effect of thermal insulation thickness, it could be stated that 3 cm is the best thickness for all locations at the best WWR, achieving maximum mean temperature reduction and time lag by 1.55 ºC and 3:33 h, 2.01 ºC and 4:03 h, 2.45 ºC and 5:57 h in Al Amarah, Baghdad and Erbil, respectively.https://uomisan.edu.iq/eng/mjes/index.php/eng/article/view/117building energybuilding designbuilding envelopethermal insulationtime delay |
| spellingShingle | Qudama Al-Yasiri Ahmed Alshara Iman Al-Maliki Howraa Al-Saadi Sahar Al-Khafaji Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities Misan Journal of Engineering Sciences building energy building design building envelope thermal insulation time delay |
| title | Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities |
| title_full | Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities |
| title_fullStr | Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities |
| title_full_unstemmed | Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities |
| title_short | Effect of window-to-wall ratio and thermal insulation on building thermal energy in various Iraqi Cities |
| title_sort | effect of window to wall ratio and thermal insulation on building thermal energy in various iraqi cities |
| topic | building energy building design building envelope thermal insulation time delay |
| url | https://uomisan.edu.iq/eng/mjes/index.php/eng/article/view/117 |
| work_keys_str_mv | AT qudamaalyasiri effectofwindowtowallratioandthermalinsulationonbuildingthermalenergyinvariousiraqicities AT ahmedalshara effectofwindowtowallratioandthermalinsulationonbuildingthermalenergyinvariousiraqicities AT imanalmaliki effectofwindowtowallratioandthermalinsulationonbuildingthermalenergyinvariousiraqicities AT howraaalsaadi effectofwindowtowallratioandthermalinsulationonbuildingthermalenergyinvariousiraqicities AT saharalkhafaji effectofwindowtowallratioandthermalinsulationonbuildingthermalenergyinvariousiraqicities |