Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings
Long-wave radiation cooling plays a pivotal role in building thermal design. Utilizing a steady-state method to determine surface heat transfer coefficients across diverse climates can result in discrepancies between the designed and actual cooling performance of a building’s envelope. To evaluate t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/12/3724 |
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| author | Jie Chen Fei Xue Xiaoxue Jin Stephen Siu Yu Lau Yue Fan |
| author_facet | Jie Chen Fei Xue Xiaoxue Jin Stephen Siu Yu Lau Yue Fan |
| author_sort | Jie Chen |
| collection | DOAJ |
| description | Long-wave radiation cooling plays a pivotal role in building thermal design. Utilizing a steady-state method to determine surface heat transfer coefficients across diverse climates can result in discrepancies between the designed and actual cooling performance of a building’s envelope. To evaluate the influence of climate and surface emissivity on building heat transfer during summer, the numerical simulation method was employed to calculate the summer long-wave radiation for nine typical residential buildings across various climate regions. This study assesses the applicable meteorological conditions and distribution range of sky radiation technology. The findings indicate that buildings can effectively dissipate heat through sky radiation when the outdoor relative humidity is below 60% and the summer temperature difference exceeds 12 °C. Analysis of meteorological characteristics across different zones reveals a positive correlation between temperature deviations and sky radiative cooling potential, thereby identifying suitable climate zones for the implementation of sky radiative cooling technology. |
| format | Article |
| id | doaj-art-d38fca4e085d41e09da4f2f5331b2493 |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-d38fca4e085d41e09da4f2f5331b24932025-08-20T02:00:24ZengMDPI AGBuildings2075-53092024-11-011412372410.3390/buildings14123724Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential BuildingsJie Chen0Fei Xue1Xiaoxue Jin2Stephen Siu Yu Lau3Yue Fan4School of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, ChinaSchool of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, ChinaSchool of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, ChinaCenter for Human-Oriented Environment and Sustainable Design, Shenzhen University, Shenzhen 518060, ChinaSchool of Architecture & Urban Planning, Shenzhen University, Shenzhen 518060, ChinaLong-wave radiation cooling plays a pivotal role in building thermal design. Utilizing a steady-state method to determine surface heat transfer coefficients across diverse climates can result in discrepancies between the designed and actual cooling performance of a building’s envelope. To evaluate the influence of climate and surface emissivity on building heat transfer during summer, the numerical simulation method was employed to calculate the summer long-wave radiation for nine typical residential buildings across various climate regions. This study assesses the applicable meteorological conditions and distribution range of sky radiation technology. The findings indicate that buildings can effectively dissipate heat through sky radiation when the outdoor relative humidity is below 60% and the summer temperature difference exceeds 12 °C. Analysis of meteorological characteristics across different zones reveals a positive correlation between temperature deviations and sky radiative cooling potential, thereby identifying suitable climate zones for the implementation of sky radiative cooling technology.https://www.mdpi.com/2075-5309/14/12/3724long-wave radiation coolingnumerical simulationbuilding loadclimate adaptability |
| spellingShingle | Jie Chen Fei Xue Xiaoxue Jin Stephen Siu Yu Lau Yue Fan Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings Buildings long-wave radiation cooling numerical simulation building load climate adaptability |
| title | Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings |
| title_full | Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings |
| title_fullStr | Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings |
| title_full_unstemmed | Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings |
| title_short | Simulation Study on the Effects of Relative Humidity (RH) on Long-Wave Radiative Heat Gain in Residential Buildings |
| title_sort | simulation study on the effects of relative humidity rh on long wave radiative heat gain in residential buildings |
| topic | long-wave radiation cooling numerical simulation building load climate adaptability |
| url | https://www.mdpi.com/2075-5309/14/12/3724 |
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