Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement

This study investigates the applicability of hydronic radiant cooling system charged with night cooled water to cool down building in Sarawak particularly for low income building to a thermally acceptable level. The system uses night sky as well as the ground as a heat sink source to passively cool...

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Main Authors:	M.S. Imran, A. Baharun, S.H. Ibrahim, W.A.W.Z. Abidin
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2016
Online Access:	http://journalarticle.ukm.my/13283/ http://journalarticle.ukm.my/13283/ http://journalarticle.ukm.my/13283/1/198-650-1-PB.pdf

id	ukm-13283
recordtype	eprints
spelling	ukm-132832019-08-26T11:16:08Z http://journalarticle.ukm.my/13283/ Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement M.S. Imran, A. Baharun, S.H. Ibrahim, W.A.W.Z. Abidin, This study investigates the applicability of hydronic radiant cooling system charged with night cooled water to cool down building in Sarawak particularly for low income building to a thermally acceptable level. The system uses night sky as well as the ground as a heat sink source to passively cool the building while operating at a low energy level. Results from building energy simulation program or Energy Plus shows that for a stand-alone hydronic radiant system only 77% of the time the thermal condition could meet ASHRAE acceptable PMV thermal condition between -0.5 and + 0.5. Another simulation of the radiant and earth tube system hybrid further improved the indoor thermal condition significantly by 100% to meet the same PMV level. The hybrid system was able to improve the baseline uncomfortable operative temperature of 37oC to 28.5oC while meeting the average comfort zone upper limit for Malaysia of 30.1 oC. Simulation on energy spent shows that as much as 94% energy could be saved by using the hybrid system. This level of saving is not impossible as renewable night cooled water was used to charge the indoor hydronic radiant cooling system. Penerbit Universiti Kebangsaan Malaysia 2016 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/13283/1/198-650-1-PB.pdf M.S. Imran, and A. Baharun, and S.H. Ibrahim, and W.A.W.Z. Abidin, (2016) Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement. Journal of Building Performance, 7 (1). pp. 56-71. ISSN 2180-2106 http://spaj.ukm.my/jsb/index.php/jbp/issue/view/33
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	This study investigates the applicability of hydronic radiant cooling system charged with night cooled water to cool down building in Sarawak particularly for low income building to a thermally acceptable level. The system uses night sky as well as the ground as a heat sink source to passively cool the building while operating at a low energy level. Results from building energy simulation program or Energy Plus shows that for a stand-alone hydronic radiant system only 77% of the time the thermal condition could meet ASHRAE acceptable PMV thermal condition between -0.5 and + 0.5. Another simulation of the radiant and earth tube system hybrid further improved the indoor thermal condition significantly by 100% to meet the same PMV level. The hybrid system was able to improve the baseline uncomfortable operative temperature of 37oC to 28.5oC while meeting the average comfort zone upper limit for Malaysia of 30.1 oC. Simulation on energy spent shows that as much as 94% energy could be saved by using the hybrid system. This level of saving is not impossible as renewable night cooled water was used to charge the indoor hydronic radiant cooling system.
format	Article
author	M.S. Imran, A. Baharun, S.H. Ibrahim, W.A.W.Z. Abidin,
spellingShingle	M.S. Imran, A. Baharun, S.H. Ibrahim, W.A.W.Z. Abidin, Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
author_facet	M.S. Imran, A. Baharun, S.H. Ibrahim, W.A.W.Z. Abidin,
author_sort	M.S. Imran,
title	Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
title_short	Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
title_full	Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
title_fullStr	Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
title_full_unstemmed	Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
title_sort	renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2016
url	http://journalarticle.ukm.my/13283/ http://journalarticle.ukm.my/13283/ http://journalarticle.ukm.my/13283/1/198-650-1-PB.pdf
first_indexed	2023-09-18T20:04:30Z
last_indexed	2023-09-18T20:04:30Z
_version_	1777407068349661184

Renewable indoor radiant cooling and earth tube heat exchanger hybrid for thermal comfort improvement

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