Study on the Effects of Heat Transfer through Glass Walls on Cooling Load

The academic buildings in Universiti Teknologi PETRONAS (UTP) are very unique in its design and are exceptional. One of the things that makes it outstanding is the use of glass as the wall material. Highly glazed buildings are intended to be airy, light and transparent with more access to daylight....

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Main Author: Ahmad Latphy, Ahmad Nazri bin
Format: Final Year Project
Language:English
Published: UNIVERSITI TEKNOLOGI PETRONAS 2009
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Online Access:http://utpedia.utp.edu.my/4009/1/Dissertation_-_Ahmad_Nazri_Ahmad_Latphy.pdf
http://utpedia.utp.edu.my/4009/
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spelling my-utp-utpedia.40092017-01-25T09:44:10Z http://utpedia.utp.edu.my/4009/ Study on the Effects of Heat Transfer through Glass Walls on Cooling Load Ahmad Latphy, Ahmad Nazri bin TJ Mechanical engineering and machinery The academic buildings in Universiti Teknologi PETRONAS (UTP) are very unique in its design and are exceptional. One of the things that makes it outstanding is the use of glass as the wall material. Highly glazed buildings are intended to be airy, light and transparent with more access to daylight. However, direct access to sunlight means more heat is gained and this significantly increases the total cooling load of buildings. Thus more energy needs to be supplied through the air conditioning to create a comfort zone for the occupants within. Therefore, a study on the heat transfer through the glass walls and its implication to the buildings’ cooling load would be necessary in order to understand the suitable approach of energy savings. The present research focuses on the effect of heat transfer through glass walls via conduction and solar radiation on buildings’ cooling load. Estimation on energy requirement with respect to solar radiation is calculated. This is done by calculation using equations and data provided in the ASHRAE Handbook. Experiments were also done using solarimeter to get the actual data for solar radiation with and without the presence of shading devices. From the results obtained, the effect of different orientation of the academic building in UTP on the total cooling load is studied. The direction of the sun which rises from the East North East to West North West affected the buildings in Zone 1 in the morning and also buildings in Zone 3 throughout the evening as the sun radiation is emitted directly to the buildings without any blockage. The occupied areas that are located under the main canopy of the academic complex are not exposed to the radiation as they are shaded. Actual measurements prove that the solar radiation emitted by the sun is much lower than calculated value. This is due to several factors which the movement of the clouds being the main reason. The use of shading materials such as window blinds and curtains further reduces the solar radiation up to 53 percent but also significantly reduces the amount of illuminance. UNIVERSITI TEKNOLOGI PETRONAS 2009-01 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/4009/1/Dissertation_-_Ahmad_Nazri_Ahmad_Latphy.pdf Ahmad Latphy, Ahmad Nazri bin (2009) Study on the Effects of Heat Transfer through Glass Walls on Cooling Load. UNIVERSITI TEKNOLOGI PETRONAS. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Ahmad Latphy, Ahmad Nazri bin
Study on the Effects of Heat Transfer through Glass Walls on Cooling Load
description The academic buildings in Universiti Teknologi PETRONAS (UTP) are very unique in its design and are exceptional. One of the things that makes it outstanding is the use of glass as the wall material. Highly glazed buildings are intended to be airy, light and transparent with more access to daylight. However, direct access to sunlight means more heat is gained and this significantly increases the total cooling load of buildings. Thus more energy needs to be supplied through the air conditioning to create a comfort zone for the occupants within. Therefore, a study on the heat transfer through the glass walls and its implication to the buildings’ cooling load would be necessary in order to understand the suitable approach of energy savings. The present research focuses on the effect of heat transfer through glass walls via conduction and solar radiation on buildings’ cooling load. Estimation on energy requirement with respect to solar radiation is calculated. This is done by calculation using equations and data provided in the ASHRAE Handbook. Experiments were also done using solarimeter to get the actual data for solar radiation with and without the presence of shading devices. From the results obtained, the effect of different orientation of the academic building in UTP on the total cooling load is studied. The direction of the sun which rises from the East North East to West North West affected the buildings in Zone 1 in the morning and also buildings in Zone 3 throughout the evening as the sun radiation is emitted directly to the buildings without any blockage. The occupied areas that are located under the main canopy of the academic complex are not exposed to the radiation as they are shaded. Actual measurements prove that the solar radiation emitted by the sun is much lower than calculated value. This is due to several factors which the movement of the clouds being the main reason. The use of shading materials such as window blinds and curtains further reduces the solar radiation up to 53 percent but also significantly reduces the amount of illuminance.
format Final Year Project
author Ahmad Latphy, Ahmad Nazri bin
author_facet Ahmad Latphy, Ahmad Nazri bin
author_sort Ahmad Latphy, Ahmad Nazri bin
title Study on the Effects of Heat Transfer through Glass Walls on Cooling Load
title_short Study on the Effects of Heat Transfer through Glass Walls on Cooling Load
title_full Study on the Effects of Heat Transfer through Glass Walls on Cooling Load
title_fullStr Study on the Effects of Heat Transfer through Glass Walls on Cooling Load
title_full_unstemmed Study on the Effects of Heat Transfer through Glass Walls on Cooling Load
title_sort study on the effects of heat transfer through glass walls on cooling load
publisher UNIVERSITI TEKNOLOGI PETRONAS
publishDate 2009
url http://utpedia.utp.edu.my/4009/1/Dissertation_-_Ahmad_Nazri_Ahmad_Latphy.pdf
http://utpedia.utp.edu.my/4009/
_version_ 1739831098782777344
score 13.18916