Page 39 - Demo

%u0e1b%u0e23%u0e30%u0e21%u0e32%u0e13 12 %u0e2d%u0e07%u0e28%u0e32%u0e40%u0e0b%u0e25%u0e40%u0e0b%u0e35%u0e22%u0e2a %u0e1c%u0e19%u0e31%u0e07%u0e01%uf70a%u0e2d%u0e04%u0e2d%u0e19%u0e01%u0e23%u0e35%u0e15%u0e21%u0e27%u0e25%u0e40%u0e1a%u0e32%u0e09%u0e32%u0e1a%u0e1b%u0e39%u0e19%u0e2a%u0e2d%u0e07%u0e14%uf70b%u0e32%u0e19%u0e21%u0e35%u0e0a%uf70a%u0e27%u0e07%u0e01%u0e32%u0e23%u0e40%u0e1b%u0e25%u0e35%u0e48%u0e22%u0e19%u0e41%u0e1b%u0e25%u0e07%u0e15%u0e25%u0e2d%u0e14%u0e27%u0e31%u0e19%u0e1b%u0e23%u0e30%u0e21%u0e32%u0e13 10 %u0e2d%u0e07%u0e28%u0e32%u0e40%u0e0b%u0e25%u0e40%u0e0b%u0e35%u0e22%u0e2a %u0e01%u0e32%u0e23%u0e43%u0e0a%uf70b%u0e1b%u0e23%u0e30%u0e42%u0e22%u0e0a%u0e19%uf70e%u0e08%u0e32%u0e01%u0e1c%u0e19%u0e31%u0e07%u0e14%u0e34%u0e19%u0e2d%u0e31%u0e14%u0e40%u0e1e%u0e37%u0e48%u0e2d%u0e2a%u0e23%uf70b%u0e32%u0e07%u0e2d%u0e32%u0e04%u0e32%u0e23%u0e20%u0e32%u0e22%u0e19%u0e2d%u0e01%u0e08%u0e36%u0e07%u0e04%u0e27%u0e23%u0e1b%uf706%u0e2d%u0e07%u0e01%u0e31%u0e19%u0e23%u0e31%u0e07%u0e2a%u0e35%u0e14%u0e27%u0e07%u0e2d%u0e32%u0e17%u0e34%u0e15%u0e22%uf70e%u0e43%u0e2b%uf70b%u0e21%u0e32%u0e01%u0e17%u0e35%u0e48%u0e2a%u0e38%u0e14%u0e40%u0e17%uf70a%u0e32%u0e17%u0e35%u0e48%u0e08%u0e30%u0e17%u0e33%u0e44%u0e14%uf70b%u0e04%u0e33%u0e2a%u0e33%u0e04%u0e31%u0e0d: %u0e1c%u0e19%u0e31%u0e07%u0e14%u0e34%u0e19%u0e2d%u0e31%u0e14 %u0e04%u0e2d%u0e19%u0e01%u0e23%u0e35%u0e15%u0e1a%u0e25%u0e47%u0e2d%u0e01 %u0e04%u0e2d%u0e19%u0e01%u0e23%u0e35%u0e15%u0e21%u0e27%u0e25%u0e40%u0e1a%u0e32 %u0e2a%u0e20%u0e32%u0e1e%u0e2d%u0e38%u0e13%u0e2b%u0e20%u0e39%u0e21%u0e34 %u0e2a%u0e20%u0e32%u0e27%u0e30%u0e19%uf70a%u0e32%u0e2a%u0e1a%u0e32%u0e22Abstract The global construction industry is shifting towards more sustainable materials and methods. \ earth walls,\significant attention due to their low energy consumption in production, especially when compared to conventional building materials. However, previous studies have shown that rammed earth walls have high thermal conductivity, causing them to respond rapidly to environmental temperature changes. This study examines temperature variations in rammed earth wall, concrete masonry unit walls, and autoclaved aerated concrete walls, aiming to analyze the thermal behavior of rammed earth walls in comparison with commonly used construction materials in Thailand. This study investigates the thermal variations resulting from the use of rammed earth wall compared to traditional masonry walls, specifically concrete masonry unit walls, and autoclaved aerated concrete walls, which are commonly used in Thailand. The test consists of three types of materials: natural-colored rammed earth walls with a density of 2200 kg/m%u00b3, cement-plastered concrete masonry unit walls with white paint on both sides, 10.3 cm thick, with a tested density of 1526 kg/m%u00b3, and autoclaved aerated concrete walls with lightweight plaster and white paint on both sides, 10.3 cm thick, with a tested density of 1204.75 kg/m%u00b3. The objective is to establish baseline thermal data for rammed earth walls as a guideline for using Rammed earth material in architectural design to enhance indoor thermal comfort. The study was conducted through an experimental approach using a highly insulated temperature test box, with one side left open to accommodate the three tested materials. Air temperature measurements were recorded for 48 hours in January 2023. The experiment was carried out at the Faculty of Architecture, King Mongkut%u2019s Institute of Technology Ladkrabang, Bangkok, to analyze and discuss the results further. The findings indicate that rammed earth walls exhibited the highest indoor air temperature fluctuations within the test box. This phenomenon is attributed to the high solar absorptance coefficient of the natural-colored rammed earth surface, which is left untreated in real-constructions. In contrast, the concrete masonry unit walls and autoclaved aerated concrete walls were finished with cement plaster on both sides and painted white, reducing their solar absorption. Additionally, rammed earth walls had the highest overall heat transfer coefficient among the three tested materials, leading to rapid indoor temperature changes influenced by external environmental conditions and solar radiation exposure. Temperature measurements within the test box revealed that rammed earth walls experienced the most significant diurnal temperature variations, with a fluctuation range of approximately 20%u00b0C - 31 -