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Evaporative cooling window system with labu sayong for reducing indoor temperature in hot-humid tropics
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Evaporative cooling window system (ECWS) using labu sayong integrated with mechanical ventilation and energy operated using solar electricity is one of the most preferable strategies to increase the indoor thermal comfort inside a building in hot-humid tropic countries like Malaysia. This system will help tackle the issue of increasing costs in keeping the home cool by managing energy consumption and also offers a better indoor environment. Through a preliminary study, the potential of labu sayong as a porous medium in ECWS was shown. Then, a pilot study was conducted in a real building under real hot-humid tropics climate. Despite having a limited time frame, the result still showed that there was a temperature reduction. As continuity from the pilot study, a series of experiments were carried out using the ECWS with labu sayong which was activated using a solar powered extractor fan invented using different parts. The study had identified the effectiveness of ECWS with labu sayong in reducing indoor temperature. An ECWS with five units of labu sayong the most appropriate strategy to be applied in hot-humid tropical buildings because this strategy has succeeded in reducing the temperature as much as-3.70ºC, thus achieving a 53.7% effectiveness of ECWS. This system was evidently effective as the result falls in the acceptable range which is between 50% and 75%. KEY WORDS: Evaporative cooling window system, labu sayong, reducing indoor temperature and hot-humid.
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This paper seeks to demonstrate that passive evaporative cooling using porous ceramic components can achieve comfort conditions inside residential buildings in hot-dry climates, and that the components can be integrated simply and effectively within existing 60s and 70s housing buildings now due for refurbishment. A case study building in South of Spain (Seville) was investigated in order to performance test different constructional and engineering solutions for the design of the system prototypes to meet different spatial and energy requirements. A performance analysis of the case study building assessed the viability of the proposed system in housing buildings and the related energy and CO 2 savings.
Edited by Mat Santamouris. Following a rapid increase in the use of air conditioning in buildings of all types, the energy demand for powering such devices has become a significant cause for concern. Passive cooling is increasingly being thought of as the best alternative to air...
Categories: Green Construction, Building Services Engineering, Sustainable Architecture
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