Al-Absi, Zeyad Amin and Asif, Muhammad and Hafizal, Mohd Isa Mohd (2024) Optimization study for PCM application in residential buildings under desert climatic conditions. Journal of Energy Storage, 104 (A). p. 114399. ISSN 2352-152X, DOI https://doi.org/10.1016/j.est.2024.114399.
Full text not available from this repository.Abstract
Despite their effectiveness in improving indoor thermal conditions and reducing energy consumption, the performance of phase change materials (PCMs) in buildings is highly dependent on ambient conditions. In desert climates, where summer outdoor temperatures can exceed 40 degrees C and nighttime temperatures rarely drop below 30 degrees C, PCM application can be challenging and may lead to undesirable outcomes if not implemented properly. Therefore, an optimization study was conducted to assess the feasibility of using PCMs to enhance thermal performance and reduce the energy consumption of residential buildings in desert climates. The optimization was performed for different seasons and involved PCM's position and transition temperatures, cooling and heating setpoints, and combining mechanical ventilation for cooling. The results indicated that optimization based on summer conditions resulted in the most significant reduction in annual energy consumption (AEC), given the greater demand for cooling energy. The optimum performance was achieved with a cooling setpoint of 25-26 degrees C, PCM transition temperatures of 30-31 degrees C for externally applied PCM, 28 degrees C for internally applied PCM on external walls, and 24-26 degrees C for internal partitions. Under the investigated conditions, using the optimal PCMs for the cooling setpoints 25 degrees C and 26 degrees C achieved maximum AEC reduction of 24.1 % and 30.4 %, respectively, while the annual thermal discomfort (ATD) was 3 % and 30.5 %, respectively. Despite the higher ATD with the optimal PCM based on the cooling setpoint of 26 degrees C, 96 % of the operative temperature was maintained below 27 degrees C, indicating an acceptable thermal condition. The findings confirm that optimal PCMs can perform well in desert climates in reducing energy consumption and improving indoor thermal conditions.
| Item Type: | Article |
|---|---|
| Funders: | Interdisciplinary Research Center for Sustainable Energy Systems (IRC-SES) , King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia |
| Uncontrolled Keywords: | Phase change materials (PCM); Desert climate; Residential building; Optimization; Cooling and heating setpoints |
| Subjects: | T Technology > TH Building construction |
| Divisions: | Faculty of the Built Environment > Department of Architecture |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 24 Feb 2025 01:09 |
| Last Modified: | 24 Feb 2025 01:09 |
| URI: | http://eprints.um.edu.my/id/eprint/47318 |
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