Journal of Oil Palm Research Vol. 17 June  2005 June p.  41-46
DOI:

A study on thermal characteristics of phase change material (PCM) in gypsum board for building application

Author(s): ROZANNA, D * ; SALMIAH Ahmad** ; CHUAH, T.G. * ; MEDYAN, R * ; THOMAS CHOONG, S.Y * ; SA'ARI, M *

Using fatty acids as phase change materials (PCMs), it is possible to store a large amount of thermal energy in a small mass and with a narrow temperature transition. Passive solar heating and cooling can be done by three methods – simple immersion, direct incorporation and encapsulation. This study investigated the effect of using a lauric-stearic acids eutectic mixture at 75.5:24.5 w/w as PCM in gypsum board. The eutectic mixture had a melting point of 34.1ºC and latent heat of 171.1 kJ kg-1 respectively. Gypsum boards were immersed 1 hr in PCM and the thermal characteristics before and after immersion were investigated. The 12.5 mm board absorbed 38.0% PCM and differential scanning calorimetry (DSC) showed that the melting point and latent heat were 34.0ºC and 50.28 kJ kg-1 , respectively. For 6 mm board, PCM absorption was 39.2% with the melting point of 34.0ºC and the latent heat of 52.87 kJ kg-1 . From the results, the thermal characteristics of the PCM-gypsum boards were similar to those of the PCM.

Keywords: , , , ,

Author Information
* Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
E-mail: dewi medyan@yahoo.com


** Malaysian Palm Oil Board, P. O. Box 10620, 50720 Kuala Lumpur, Malaysia.


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