Thermal performance of naturally ventilated test building with pitch and ceiling insulation

Morris, Freda; Ahmed, Azni Zain; Zakaria, Nor Zaini

doi:10.1109/isesee.2011.5977093

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…The density, specific heat, k-value and thickness of the materials employed to construct the test cells are presented in Table 1. The materials were determined based on the designs of typical modern residential buildings in Malaysia as employed in the research of Irwan et al [28,29], Halim et al [30], Morris et al [31,32] and Zakaria et al [33]. The density, specific heat, k-value and thickness of the materials employed to construct the test cells are presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Effect of Roof Tile Colour on Heat Conduction Transfer, Roof-Top Surface Temperature and Cooling Load in Modern Residential Buildings under the Tropical Climate of Malaysia

et al. 2021

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Modern residential roofs in Malaysia mainly employ red and brown roof tiles due to aesthetic factors and the ability of the roof surface to reflect or retard heat transfer is typically not considered the main priority. The present article reveals the findings of a study on the effect of roof tile colour on heat conduction transfer through roof tiles and ceiling boards, roof-top surface temperature and cooling load. Findings suggest that the selection of white roof tiles significantly reduces the peaks of heat conduction transfer and roof-top surface temperature as well as the values of heat conduction transfer and roof-top surface temperature throughout diurnal profiles, which consequently reduces hours of indoor thermal discomfort and use of air-conditioners in indoor spaces. A decline in peak roof-top surface temperature of up to 16.00 °C that results in annual energy savings of up to 13.14% can be achieved when the roof tile colour is changed from red to white. Further research on the development of solar-reflective paint or coating products that can significantly increase the solar reflectance values of non-white roof tiles are essential to overcome issues related to maintenance difficulties and lack of preference among house buyers towards white roof tiles.

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Section: Methodsmentioning

confidence: 99%

Effect of Roof Tile Colour on Heat Conduction Transfer, Roof-Top Surface Temperature and Cooling Load in Modern Residential Buildings under the Tropical Climate of Malaysia

et al. 2021

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“…Amir et al [44], Gardezi et al [45] and Jamaludin et al [46] developed building information models of pre-determined types of residential buildings. Alternatively, building information models developed in Farhan et al [31], Halim et al [23], Irwan et al [24,25] and Morris et al [26] were those of test cells that represent the conditions of a habitable space in typical urban residential buildings in Malaysia. BIM simulation data that were collected from the building information models can be validated by conducting field measurements and comparing the measured data with their counterparts from the BIM simulation based on Equation ( 6) as in Vangimalla et al [47].…”

Section: Sri =mentioning

confidence: 99%

“…Previous studies on building insulation paid more attention to wall insulation in cold climates [22], and less emphasis was given to roof insulation in hot climates. In Malaysia, previous research pertaining to thermal performance evaluation of insulation materials installed in residential roof assemblies is limited to the studies of Farhan et al [16], Halim et al [23], Irwan et al [24,25], Ismail et al [14], Morris et al [26], Nuruddin et al [15,27], Puad et al [28] and Zakaria et al [29]. Findings indicated that installing roof insulation efficiently reduced diurnal heat transfer from the outdoor environment into the indoor space through the roof assembly.…”

Section: Introductionmentioning

confidence: 99%

Thermal-Energy Performance of Bulk Insulation Coupled with High-Albedo Roof Tiles in Urban Pitched Residential Roof Assemblies in the Hot, Humid Climate

et al. 2022

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The high rate of heat transfer through the residential roof assembly aggravates the condition of indoor thermal discomfort. Bulk insulation can be installed in the assembly to improve thermal performance. However, although it can efficiently reduce diurnal heat transfer from the outdoor environment into the indoor space through the roof assembly, it can also suppress nocturnal heat transfer in the opposite direction. Alternatively, high-albedo roof tiles employ cool colors to reflect heat at the roof surface, whereas bulk insulation hinders the conduction of heat through the roof assembly. In light of the potential of high-albedo roof tiles and bulk insulation in reducing heat transfer, thermal-energy performance of an urban pitched residential roof assembly, which adopted varying configurations of high-albedo roof tiles and bulk insulation under a hot, humid climate, was evaluated. Energy savings were generated, which were 15.13% when the change from a conventional to a high-albedo roof surface was performed, and 17.00% when the installation of bulk insulation was performed on the high-albedo roof assembly.

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“…Briga-Sa et al discussed the influence of the massive wall thickness, the existence of the ventilation system and the introduction of the external shutters in the thermal performance of a Trombe wall and found that the heat gains by transfer represents 20.89% of the global heat gains, resulting 14.49% from conduction, convection and radiation through the wall and 6.40 % from air convection due to the existence of ventilation system [27]. Morris et al made a field based experimental study of insulated roof and insulated ceiling for naturally ventilated buildings in Malaysia and found that both the pitch insulation and ceiling insulation lowers the daytime indoor temperature up to 0.8°C and 0.6°C respectively [28]. However, both have adverse impact at night.…”

Section: A Solution Approaches In Climate Responsive Buildingsmentioning

confidence: 99%

Energy Conservation in Buildings – a Review

Thapa¹,

Panda²

2015

IJEE

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Abstract-The primary function of a building is to provide thermally comfortable environment to its occupants. A good indoor climate is important for the success of any building, not only because it will make its occupants comfortable, but also because it will decide its energy consumption, and thus influences its sustainability. A literature review of over 100 research papers, in four areas in the field of Energy Conservation in Buildings, i.e. (i) Climate Responsive Buildings, (ii) Analysis, Simulation and Modelling, (iii) Zero Energy Buildings and (iv) Thermal Comfort, were conducted in order to obtain a valid research topic. The findings of the literature survey is presented in this paper which include issue wise discussion, solution approaches used by various researchers, strengths, weaknesses and future scope of work in the four issues pertaining to energy conservation in buildings. Out of the several identified lag, it was felt that there was a dearth of field studies based thermal comfort research in India, which is essential for the correct definition of building codes. Proper building codes are required not only for providing comfort condition but also to conserve energy. Hence field studies based thermal comfort study was considered for further research study. Thus, this paper summarizes the researches about Climate Responsive Buildings, Analysis, Simulation and Modelling, Zero Energy Buildings and Thermal Comfort. It also concludes the methodology of these researches in above four fields, and gives further work suggestions.

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Thermal performance of naturally ventilated test building with pitch and ceiling insulation

Cited by 5 publications

References 1 publication

Effect of Roof Tile Colour on Heat Conduction Transfer, Roof-Top Surface Temperature and Cooling Load in Modern Residential Buildings under the Tropical Climate of Malaysia

Effect of Roof Tile Colour on Heat Conduction Transfer, Roof-Top Surface Temperature and Cooling Load in Modern Residential Buildings under the Tropical Climate of Malaysia

Thermal-Energy Performance of Bulk Insulation Coupled with High-Albedo Roof Tiles in Urban Pitched Residential Roof Assemblies in the Hot, Humid Climate

Energy Conservation in Buildings – a Review

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