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research-article

Thermal behavior of a building provided with PCM on the roof and exposed to solar radiation

[+] Author and Article Information
Amina Mourid

Laboratory of Physical Materials, Microelectronics, Automatics and Heat Transfer (LPMMAT), Faculté des Sciences Aïn Chock, Université Hassan II de Casablanca, Morocco
mouridamina@gmail.com

Mustapha El Alami

Laboratory of Physical Materials, Microelectronics, Automatics and Heat Transfer (LPMMAT), Faculté des Sciences Aïn Chock, Université Hassan II de Casablanca, Morocco
m.elalami@fsac.ac.ma
elalamimus@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4037905 History: Received May 18, 2017; Revised August 27, 2017

Abstract

The present paper evaluates the effectiveness of Phase Change Materials (PCMs) for the improvement of summer thermal comfort in lightweight buildings. Experiments have been carried out using phase change material in the form of DuPont Energain wallboards in combination with a roof. Two factors influencing the effectiveness of PCM (Thickness and location of PCM layer) have been investigated. An experimental study was carried out using two identical test cavities submitted to Casablanca weather. Thermal performance such as the roof surface temperatures and heat flux densities, trough the envelope, have been studied. The results indicated that, compared with reference room (without PCM), the thermal storage allows solar radiation to be stored and released up to 6-7h after solar irradiation: this has effects on both the reduction of daily temperature swings (up to 2°C) and heat flux (more than 88%). It has been proved that the PCM with thickness of 10.52 mm on the outer face of the roof has good thermal insulation effect and energy efficiency potential.

Copyright (c) 2017 by ASME
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