Effect Of Selected Shading Devices On Office Room Temperature
This study investigated the effects of selected shading devices on office room temperature at Universiti Putra Malaysia. The experimental and simulation results were presented to show the thermal effects of coating systems used. Initial work for a duration of two months showed that high temperat...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/5409/1/fk_2008_37.pdf |
| Summary: | This study investigated the effects of selected shading devices on office
room temperature at Universiti Putra Malaysia. The experimental and
simulation results were presented to show the thermal effects of coating
systems used. Initial work for a duration of two months showed that high
temperatures occurred at 10:00, 1200 and 14:00 hours. This frequency of
measurement is similar to that of Etzion and Erell (2000). Thermocouple
wires were used to measure the air temperature in an office of size 4.03 m x
3.82 m x 2.60 m (length x width x height). The window was a vertical glass
plate with thickness 5 mm, height 1.53 m and width 2.12 m and it was
facing northeast. Coating materials used were plain glass pane thickness 5
mm (control), tinted film, silver film, and blinds. Results showed that the
differences in temperature between the inside and outside of the office were
4.4oC, 3.8oC, 3.5oC and 2.9oC for silver film, blinds, tinted film and clean glass (5 mm), respectively. Comparison between simulated and
experimental results showed a reasonable agreement, ranging between 0.2 to
10 %. The external air velocity ranged between 0.19 and 0.45 ms-1 and
relative humidity between 22.7% and 77.5 %, while the average air velocity
in the office ranged from 0.03 to 0.05 ms-1 and relative humidity from 57.2
% to 66.8 %. The simulated results for internal air temperatures of the
office ranged from 28oC to 29oC. In terms of cost, the blinds gave value for
money with every temperature drop for temperature difference between
internal and external temperatures. In addition the blinds could be easily
fixed. |
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