Building envelope-enhanced phase change material and night ventilation: Effect of window orientation and window-to-wall ratio on indoor temperature

Qudama Al-Yasiri, Mohammed Alktranee, Márta Szabó and Müslüm Arıcı

Renewable Energy, 2023, vol. 218, issue C

Abstract: Integrating phase change material (PCM) and natural night ventilation (NNV) has notably improved building indoor thermal comfort in hot locations. The current study investigates the role of NNV through a window to improve the indoor temperature of a PCM room, considering the window orientation and window-to-wall ratio (WWR). The NNV was employed through a one-sided window of the PCM room to enumerate the advantages of passive building technologies in summer. Different window orientations and WWRs (between 8.75% and 20%) were analysed to improve the indoor environment using an experimentally validated model developed by EnergyPlus software. Numerical findings exhibited that the window orientation has a minimal effect on the NNV of the PCM room regardless of wind direction. However, the Northeast orientation was the best case for the studied location, achieving average indoor temperature reduction by up to 31%, and a thermal load levelling reduction by 9%–17%. Furthermore, the larger window size exhibited improved thermal comfort, where the WWR of 20% decreased the average indoor temperature by 1.14 °C more than the reference PCM room of WWR = 8.75% without ventilation. Besides, the operative temperature at the largest window size was reduced by up to 22% during nighttime. The study concluded that the effectiveness of NNV is limited under severe hot locations, and alternative cooling means could be advantageous.

Keywords: Phase change material; Window-to-wall ratio; Window orientation; Night ventilation; Indoor temperature reduction; Thermal comfort (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148123011783
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:218:y:2023:i:c:s0960148123011783

DOI: 10.1016/j.renene.2023.119263

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().