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Low-energy earth–air heat exchanger cooling system for buildings in hot and humid Malaysia

Sanusi, A. N. Z., Shao, L. and Keumala, N. I. (2015) Low-energy earth–air heat exchanger cooling system for buildings in hot and humid Malaysia. In: Sayigh, A. (ed.) Renewable Energy in the Service of Mankind; Selected Topics from the World Renewable Energy Congress WREC 2014. Springer International Publishing, Switzerland, pp. 515-528. ISBN 9783319177762

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To link to this item DOI: 10.1007/978-3-319-17777-9_46


This chapter presents an extended exploration of the performance of low-energy earth–air heat exchanger (EAHE) cooling in hot and humid Malaysia from the published work of Sanusi (2013). The increasing demand of air-conditioning for cooling purposes motivates this investigation in search for better cooling alternatives. The passive technology, where soil underground was used as a heat sink to produce cooler air, has yet to be investigated further in hot and humid countries. This work, the passive technology, is tested by carrying out two interconnected field investigations: soil temperature measurement and the earth pipe cooling experiment for 1 year. In 1 year, soil temperature distribution at 1 m depth fluctuates, influenced by the different seasons in a year. However, the soil at 1 m depth is cooler than deeper soil during the wet season. Therefore, for investigating the EAHE cooling performance for 1 year, the pipe was buried at 1 m depth at the same test site. A significant temperature drop was found in the 1-m-depth-buried pipe: up to 6.3 and 8.6 °C, respective to the seasons of the year. Thermal comfort of air temperature at the buried pipe outlet was analyzed with Khedari thermal comfort chart, and the result has shown that the buried pipe outlet air temperatures are within the range of thermal comfort conditions for hot/humid countries. This study has showed a potential of earth pipe cooling technology in providing low-energy cooling in buildings in Malaysia.

Item Type:Book or Report Section
Divisions:Science > School of the Built Environment > Energy and Environmental Engineering group
ID Code:67318
Uncontrolled Keywords:Soil temperature Hot and humid Malaysia Earth pipe cooling Passive Low energy Thermal comfort Ground cooling
Publisher:Springer International Publishing

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