Assessment of Air well Performance in Single-storey Terraced Houses
Single-storey terraced housing in Malaysia does not provide thermal comfort to its occupants due to poor dissipation of heat from solar irradiation unless mechanical cooling is installed, which adds to the urban heating island problem. This study is a simple assessment of natural ventilation perform...
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| Language: | en en |
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UniSE Press
2021
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| Online Access: | https://eprints.ums.edu.my/id/eprint/32032/1/Assessment%20of%20Air%20well%20Performance%20in%20Single-storey%20Terraced%20Houses.pdf https://eprints.ums.edu.my/id/eprint/32032/2/Assessment%20of%20Air%20well%20Performance%20in%20Single-storey%20Terraced%20Houses1.pdf https://eprints.ums.edu.my/id/eprint/32032/ http://tost.unise.org/pdfs/vol8/no3-2/ToST-CoFA2020-225-238-OA.pdf |
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| _version_ | 1831794744358862848 |
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| author | Mohd Suffian Misaran Misran Heng, Jin Tham Chi, Christopher Ming Chu Djamila Harimi |
| author_facet | Mohd Suffian Misaran Misran Heng, Jin Tham Chi, Christopher Ming Chu Djamila Harimi |
| author_sort | Mohd Suffian Misaran Misran |
| building | UMS Library |
| collection | Institutional Repository |
| content_provider | Universiti Malaysia Sabah |
| content_source | UMS Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Single-storey terraced housing in Malaysia does not provide thermal comfort to its occupants due to poor dissipation of heat from solar irradiation unless mechanical cooling is installed, which adds to the urban heating island problem. This study is a simple assessment of natural ventilation performance of terrace houses which by law are built with an air well and sized according to regulations. A typical room of 3 m x 4 m x 3 m with an adjacent air well has been investigated by CFD simulation assuming ambient temperature of 30℃ and atmospheric pressure of 101.3 kPa. The results show that with an air well-chimney of 2.55 m above the roof the test room air velocity could reach 0.6 ms˗¹ for thermal comfort; while without the protruded chimney adverse cold inflow set in, and the indoor air flow velocity ranged from as low as 0.08 ms-1 to 0.21 ms ˗¹. However, when the protruded chimney was not installed, but with a wire mesh-based blocker of adverse cold inflow installed on the air well outlet, the indoor air flow velocity consistently reached 0.2-0.3 ms˗¹, which was about 45% higher than that without the blocker, and was within the recommended range for thermal comfort. The wire mesh blocker of adverse cold inflow could be an option to ventilate effectively single-story terrace houses without the need of installing tall chimneys. |
| format | Article |
| id | my.ums.eprints-32032 |
| institution | Universiti Malaysia Sabah |
| language | en en |
| publishDate | 2021 |
| publisher | UniSE Press |
| record_format | eprints |
| spelling | my.ums.eprints-320322022-03-24T07:25:37Z https://eprints.ums.edu.my/id/eprint/32032/ Assessment of Air well Performance in Single-storey Terraced Houses Mohd Suffian Misaran Misran Heng, Jin Tham Chi, Christopher Ming Chu Djamila Harimi TA1-2040 Engineering (General). Civil engineering (General) TA174 Engineering design Single-storey terraced housing in Malaysia does not provide thermal comfort to its occupants due to poor dissipation of heat from solar irradiation unless mechanical cooling is installed, which adds to the urban heating island problem. This study is a simple assessment of natural ventilation performance of terrace houses which by law are built with an air well and sized according to regulations. A typical room of 3 m x 4 m x 3 m with an adjacent air well has been investigated by CFD simulation assuming ambient temperature of 30℃ and atmospheric pressure of 101.3 kPa. The results show that with an air well-chimney of 2.55 m above the roof the test room air velocity could reach 0.6 ms˗¹ for thermal comfort; while without the protruded chimney adverse cold inflow set in, and the indoor air flow velocity ranged from as low as 0.08 ms-1 to 0.21 ms ˗¹. However, when the protruded chimney was not installed, but with a wire mesh-based blocker of adverse cold inflow installed on the air well outlet, the indoor air flow velocity consistently reached 0.2-0.3 ms˗¹, which was about 45% higher than that without the blocker, and was within the recommended range for thermal comfort. The wire mesh blocker of adverse cold inflow could be an option to ventilate effectively single-story terrace houses without the need of installing tall chimneys. UniSE Press 2021 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/32032/1/Assessment%20of%20Air%20well%20Performance%20in%20Single-storey%20Terraced%20Houses.pdf text en https://eprints.ums.edu.my/id/eprint/32032/2/Assessment%20of%20Air%20well%20Performance%20in%20Single-storey%20Terraced%20Houses1.pdf Mohd Suffian Misaran Misran and Heng, Jin Tham and Chi, Christopher Ming Chu and Djamila Harimi (2021) Assessment of Air well Performance in Single-storey Terraced Houses. Transactions on Science and Technology, 8 (3-2). pp. 225-238. ISSN 2289-8786 http://tost.unise.org/pdfs/vol8/no3-2/ToST-CoFA2020-225-238-OA.pdf |
| spellingShingle | TA1-2040 Engineering (General). Civil engineering (General) TA174 Engineering design Mohd Suffian Misaran Misran Heng, Jin Tham Chi, Christopher Ming Chu Djamila Harimi Assessment of Air well Performance in Single-storey Terraced Houses |
| title | Assessment of Air well Performance in Single-storey Terraced Houses |
| title_full | Assessment of Air well Performance in Single-storey Terraced Houses |
| title_fullStr | Assessment of Air well Performance in Single-storey Terraced Houses |
| title_full_unstemmed | Assessment of Air well Performance in Single-storey Terraced Houses |
| title_short | Assessment of Air well Performance in Single-storey Terraced Houses |
| title_sort | assessment of air well performance in single-storey terraced houses |
| topic | TA1-2040 Engineering (General). Civil engineering (General) TA174 Engineering design |
| url | https://eprints.ums.edu.my/id/eprint/32032/1/Assessment%20of%20Air%20well%20Performance%20in%20Single-storey%20Terraced%20Houses.pdf https://eprints.ums.edu.my/id/eprint/32032/2/Assessment%20of%20Air%20well%20Performance%20in%20Single-storey%20Terraced%20Houses1.pdf https://eprints.ums.edu.my/id/eprint/32032/ http://tost.unise.org/pdfs/vol8/no3-2/ToST-CoFA2020-225-238-OA.pdf |
| url_provider | http://eprints.ums.edu.my/ |