dc.contributor.author | Merdang Sembiring, Dr. Ir. | |
dc.date.accessioned | 2012-07-11T04:57:16Z | |
dc.date.available | 2012-07-11T04:57:16Z | |
dc.date.issued | 2012-02-27 | |
dc.identifier.uri | http://dspace.unimap.edu.my/123456789/20257 | |
dc.description | International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) organized by School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 27th - 28th Februari 2012 at Bayview Beach Resort, Penang, Malaysia. | en_US |
dc.description.abstract | Heat transfer in a house occurs through convection,
conduction, and thermal radiation through roof, walls, floor and
windows. House materials and direction to where the surfaces of
building face, play a role in the total heat transfer for the building.
Apart from that the roof slope of house plays a vital role in the
intensity of heat from solar radiation that flows through a roof to
the attic space bellow it. Reducing the amount of heat that flows
through the roof and goes into the attic space can reduce the cooling
load and thus reduces the building’s energy cost.
This paper discusses the comparison of heat transfer through roof
and walls of a house subjected to solar energy, in Kangar – Perlis
Region, Northern Malaysia. Solar radiation effect on a house of
different roof slope have been investigated. In the same time the
heat transfer through the house walls is calculated for the four walls
of a house, each facing to the East, West, South and North,
respectively. A computer program is developed to compute the
effect of solar radiation through different roof slopes and also
through the walls. The variation of the ambient temperature, Tair,
and solar heat flux incident, qsolar, on each of wall and roof surface
throughout the day are chosen for a typical day (day representation
in month of March) with 1-h interval. Influence of radiation to the
sky is also considered in this calculation. In simulation, we applied
the finite difference method to transient problem, where the qsolar, at
the walls and roof change with the time as well as the position of the
sun along day.
From results of investigation, it is recommended that the best roof
slope in Kangar has to be taken in the range of 30o- 40o. The
comparison of heat transfer per meter square per day between
roofs and walls for a house is around 1: 0.867. This ratio is
indicated for simple type of house with common materials like brick
for wall, asbestos-cement for roof and fiber for ceiling. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Universiti Malaysia Perlis (UniMAP) | en_US |
dc.relation.ispartofseries | Proceedings of the International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) | en_US |
dc.subject | Solar energy | en_US |
dc.subject | Roof slope | en_US |
dc.subject | House walls | en_US |
dc.subject | Numerical solution | en_US |
dc.subject | Heat transfer | en_US |
dc.title | Comparison of heat transfer through roof and wall of a house subjected to solar energy in northern malaysia | en_US |
dc.type | Working Paper | en_US |
dc.publisher.department | Pusat Pengajian Kejuruteraan Mekatronik | en_US |
dc.contributor.url | merdang@unimap.edu.my | en_US |