Thermal Behaviour Studies on Building Walls based on Type and Composition of the Materials

Abstract

Controlling the thermal behaviour of buildings is very important because it affects the energy use in the buildings and impacts the thermal environment of the area. Thermal behaviour of the building is determined by the type and composition of the building material. This paper shows the thermal behaviour of several types and composition of commonly used building wall materials, i.e. brick, aerated concrete, laminated wood with glass wool insulation, and gypsum with glass wool insulation. For the thermal behaviour measurements, we used wall models exposed to halogen lamps of 2000 watts for 4 hours heating and 4 hours for cooling with a measurement interval of 5-15 minutes. Data retrieval using 8 thermocouples mounted on the surface and inserted inside the wall. The observed thermal behaviour phenomena are the heat flow on the walls, the time delay, and the heat capacity. The results show different maps of the thermal behaviour on the walls and indicating the need for additional thermal insulation material to control the heat release to the outside and inside of the building.

On The Profiling of Air Leakage Infiltration Pattern across Chinese Vernacular Buildings

“…The two-thirds distribution of these vernacular buildings with variations is reported to be across Shanxi, Lingnan, Minnan, Hakka, Gan, Yaodong, Tibet, Xinjiang, and others [23,[25][26][27] . Owing to the geographic metric of latitudinal variation, the climatic differentials across subarctic to tropical regions of vernacular building thermal comfort adaptive strategies deployed into modern architecture have shown fitting adoptable efficient potential of ventilation, air tightness, thermal capacity, passive solar gains and passive solar controls [28][29][30][31] . Comparative temperature and psychrometric measurements across these regions with the intent of reporting vernacular building air leakage profile are in this study reproduced for extended treatment [18] .…”

“…Comparative temperature and psychrometric measurements across these regions with the intent of reporting vernacular building air leakage profile are in this study reproduced for extended treatment [18] . Adopting the integration of modern architecture into China's vernacular idea of buildings has shown promise of energy balance in buildings that have spurred technological research towards having green or zero energy buildings that call for overthrowing the use of fossil energy plants to cooling/heating buildings with attendant high cost [5,11,32,33] . Modern design re-sponses to thermal discomfort in buildings are replete with passive cooling and heating systems [34] itemized four adaptive passive cooling actions to include storing capability/potential, avoidance, removal of undesirable heat gain and slow absorptivity of passive cooling materials.…”

“…A sk = total surface area of skin, M = rate of metabolic energy production per skin surface area, Q = production rate of heat, W = production rate of work. Considering the occupant comfort function above, we can draw congruencies with vernacular building infiltration and ventilation link to the airflow through openings in proportion to the building area and to some degree of the pressure difference [30,42] :…”

Characterising thermal behaviour of buildings and its effect on urban heat island in tropical areas

“…used materials. This study is based on the studies of heat flow and thermal behaviour of common wall materials by Andoni and Thomas [51,52]. This study shows a direct and measurable effect for the impact of various building materials on the environment, especially the HII in a common dense residential area in a developing country that is situated in a tropical area.…”