Renewable night cooled chill water source for energy efficient indoor radiant cooling
This study investigates cooling of water at night in Malaysian climate as renewable cooling medium source for radiant cooling purpose. An experiment with a 1.95 m2 steel roof rig structure was constructed and night cooling cycle was conducted during the hot season and cold season of the year. Regres...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Trans Tech Publications Ltd
2016
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/14264/ http://ir.unimas.my/id/eprint/14264/2/Renewable%20Night%20-%20Copy.pdf |
| _version_ | 1848837607968997376 |
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| author | Imran, Muhammad Syukri Baharun, Azhaili Siti Halipah, Ibrahim Wan Azlan, Bin Wan Zainal Abidin |
| author_facet | Imran, Muhammad Syukri Baharun, Azhaili Siti Halipah, Ibrahim Wan Azlan, Bin Wan Zainal Abidin |
| author_sort | Imran, Muhammad Syukri |
| building | UNIMAS Institutional Repository |
| collection | Online Access |
| description | This study investigates cooling of water at night in Malaysian climate as renewable cooling medium source for radiant cooling purpose. An experiment with a 1.95 m2 steel roof rig structure was constructed and night cooling cycle was conducted during the hot season and cold season of the year. Regression model was developed to predict water temperature after the night cooling process and the corresponding water and roof ratio was established. An annual simulation of a low income home model retrofitted with radiant cooling system charged by night cooled water as cooling medium shows that 99% of the time the thermal condition could meet ISO 7730 category C Predicted Mean Vote (PMV) between -0.7 and + 0.7. For an outdoor American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) design day condition, the peak indoor operative temperature of 37°C could be lowered to about 30°C with the use of radiant cooling system. The calculated energy saving for the home model was 85% or about 15% of the conventional air system operating cost |
| first_indexed | 2025-11-15T06:42:21Z |
| format | Article |
| id | unimas-14264 |
| institution | Universiti Malaysia Sarawak |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T06:42:21Z |
| publishDate | 2016 |
| publisher | Trans Tech Publications Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | unimas-142642022-05-25T07:30:05Z http://ir.unimas.my/id/eprint/14264/ Renewable night cooled chill water source for energy efficient indoor radiant cooling Imran, Muhammad Syukri Baharun, Azhaili Siti Halipah, Ibrahim Wan Azlan, Bin Wan Zainal Abidin TC Hydraulic engineering. Ocean engineering This study investigates cooling of water at night in Malaysian climate as renewable cooling medium source for radiant cooling purpose. An experiment with a 1.95 m2 steel roof rig structure was constructed and night cooling cycle was conducted during the hot season and cold season of the year. Regression model was developed to predict water temperature after the night cooling process and the corresponding water and roof ratio was established. An annual simulation of a low income home model retrofitted with radiant cooling system charged by night cooled water as cooling medium shows that 99% of the time the thermal condition could meet ISO 7730 category C Predicted Mean Vote (PMV) between -0.7 and + 0.7. For an outdoor American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) design day condition, the peak indoor operative temperature of 37°C could be lowered to about 30°C with the use of radiant cooling system. The calculated energy saving for the home model was 85% or about 15% of the conventional air system operating cost Trans Tech Publications Ltd 2016 Article PeerReviewed text en http://ir.unimas.my/id/eprint/14264/2/Renewable%20Night%20-%20Copy.pdf Imran, Muhammad Syukri and Baharun, Azhaili and Siti Halipah, Ibrahim and Wan Azlan, Bin Wan Zainal Abidin (2016) Renewable night cooled chill water source for energy efficient indoor radiant cooling. International Journal of Engineering Research in Africa, 26. pp. 86-98. ISSN 1663-3571 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990935209&partnerID=40&md5=ff8960be4aa7f10facbae8c027891ff8 DOI: 10.4028/www.scientific.net/JERA.26.86 |
| spellingShingle | TC Hydraulic engineering. Ocean engineering Imran, Muhammad Syukri Baharun, Azhaili Siti Halipah, Ibrahim Wan Azlan, Bin Wan Zainal Abidin Renewable night cooled chill water source for energy efficient indoor radiant cooling |
| title | Renewable night cooled chill water source for energy efficient indoor radiant cooling |
| title_full | Renewable night cooled chill water source for energy efficient indoor radiant cooling |
| title_fullStr | Renewable night cooled chill water source for energy efficient indoor radiant cooling |
| title_full_unstemmed | Renewable night cooled chill water source for energy efficient indoor radiant cooling |
| title_short | Renewable night cooled chill water source for energy efficient indoor radiant cooling |
| title_sort | renewable night cooled chill water source for energy efficient indoor radiant cooling |
| topic | TC Hydraulic engineering. Ocean engineering |
| url | http://ir.unimas.my/id/eprint/14264/ http://ir.unimas.my/id/eprint/14264/ http://ir.unimas.my/id/eprint/14264/ http://ir.unimas.my/id/eprint/14264/2/Renewable%20Night%20-%20Copy.pdf |