The main barriers affecting the performance of phase change materials (PCM) wallboard system during energy recovery mode are identified as inadequate heat transfer and overall reduction in thermal conductivities. In order to assess the extent of these barriers, two integrated PCM drywall systems (i.e., randomly mixed and laminated PCM systems) have been evaluated numerically. The results showed a great advantage of the laminated PCM-wallboard system over the randomly mixed PCM type in terms of enhanced thermal performance and rapid heat transfer rates under narrow temperature swing. For instance, the maximum instantaneous enhancement in heat flux obtained was between 20% and 50% higher during the phase change process and up to about 18% more heat storage and release capacity. Experimental evaluation is, however, required towards validation and development of the laminated system.
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August 2005
Research Papers
Thermal Analysis of Composite Phase Change Drywall Systems
K. Darkwa,
K. Darkwa
The Applied Energy and Environmental Engineering Group (AE&EEG), School of the Built Environment,
e-mail: kojo.darkwa@ntu.ac.uk
Nottingham Trent University
, Burton Street, Nottingham NG1 4BU, UK
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J. S. Kim
J. S. Kim
The Applied Energy and Environmental Engineering Group (AE&EEG), School of the Built Environment,
Nottingham Trent University
, Burton Street, Nottingham NG1 4BU, UK
Search for other works by this author on:
K. Darkwa
The Applied Energy and Environmental Engineering Group (AE&EEG), School of the Built Environment,
Nottingham Trent University
, Burton Street, Nottingham NG1 4BU, UKe-mail: kojo.darkwa@ntu.ac.uk
J. S. Kim
The Applied Energy and Environmental Engineering Group (AE&EEG), School of the Built Environment,
Nottingham Trent University
, Burton Street, Nottingham NG1 4BU, UKJ. Sol. Energy Eng. Aug 2005, 127(3): 352-356 (5 pages)
Published Online: June 3, 2004
Article history
Received:
December 8, 2003
Revised:
June 3, 2004
Citation
Darkwa, K., and Kim, J. S. (June 3, 2004). "Thermal Analysis of Composite Phase Change Drywall Systems." ASME. J. Sol. Energy Eng. August 2005; 127(3): 352–356. https://doi.org/10.1115/1.1877492
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