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The effect of air velocity on the performance of the direct evaporative cooling system

This experimental study aimed to determine the effect of airflow velocity on the performance of a direct evaporative cooling system. Rectangular-shaped honeycomb cooling pads with a length of 34 cm, a width of 25 cm, and a thickness of 3.5 cm are used as cooling media. The main parameters of the stu...

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Main Authors: Z Hassan, Mohd Suffian Misaran @ Misran, Nancy Julius Siambun, Mohd Adzrie Radzali
Format: Conference or Workshop Item
Language:English
English
Published: 2022
Subjects:
TH6014-6081 Environmental engineering of buildings. Sanitary engineering of buildings
Online Access:https://eprints.ums.edu.my/id/eprint/31009/1/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/31009/2/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/31009/
https://iopscience.iop.org/article/10.1088/1757-899X/1217/1/012016/pdf
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spelling my.ums.eprints.310092022-10-20T01:47:13Z https://eprints.ums.edu.my/id/eprint/31009/ The effect of air velocity on the performance of the direct evaporative cooling system Z Hassan Mohd Suffian Misaran @ Misran Nancy Julius Siambun Mohd Adzrie Radzali TH6014-6081 Environmental engineering of buildings. Sanitary engineering of buildings This experimental study aimed to determine the effect of airflow velocity on the performance of a direct evaporative cooling system. Rectangular-shaped honeycomb cooling pads with a length of 34 cm, a width of 25 cm, and a thickness of 3.5 cm are used as cooling media. The main parameters of the study are low air velocity (2.3 ms−1), medium (3.2 ms−1), and high velocity (3.7 ms−1). The data collected include dry bulb temperature, wet bulb temperature, output air temperature, input and output air velocity, input and output humidity, and solar radiation. These data are used to determine saturation efficiency, cooling capacity, temperature decreases, and feasibility index. The experimental results are presented in the form of tables and graphs and analysed based on existing theories. The results showed that the evaporative cooling system could produce output temperatures up to 27.5°C with input 31.4°C at low airspeed, 27.97°C with input 31.47°C at medium speed, and 27.7°C with input 31.30°C at high air speed. It was concluded that a low airflow rate would add to the cooling efficiency, and the higher the airflow rate, the lower the cooling efficiency. The results showed that evaporative cooling is achievable with a feasibility index of 19.89 ≤ F*≤ 20.67. The results also affirmed that cooling capability is higher where the feasibility indexes are comparatively low. 2022 Conference or Workshop Item PeerReviewed text en https://eprints.ums.edu.my/id/eprint/31009/1/FULL%20TEXT.pdf text en https://eprints.ums.edu.my/id/eprint/31009/2/ABSTRACT.pdf Z Hassan and Mohd Suffian Misaran @ Misran and Nancy Julius Siambun and Mohd Adzrie Radzali (2022) The effect of air velocity on the performance of the direct evaporative cooling system. In: Material and Energy Engineering for Sustainable Advancement (MEESA 2021), 29 - 30 September 2021, Kota Kinabalu, Sabah, Malaysia. https://iopscience.iop.org/article/10.1088/1757-899X/1217/1/012016/pdf
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic TH6014-6081 Environmental engineering of buildings. Sanitary engineering of buildings
spellingShingle TH6014-6081 Environmental engineering of buildings. Sanitary engineering of buildings
Z Hassan
Mohd Suffian Misaran @ Misran
Nancy Julius Siambun
Mohd Adzrie Radzali
The effect of air velocity on the performance of the direct evaporative cooling system
description This experimental study aimed to determine the effect of airflow velocity on the performance of a direct evaporative cooling system. Rectangular-shaped honeycomb cooling pads with a length of 34 cm, a width of 25 cm, and a thickness of 3.5 cm are used as cooling media. The main parameters of the study are low air velocity (2.3 ms−1), medium (3.2 ms−1), and high velocity (3.7 ms−1). The data collected include dry bulb temperature, wet bulb temperature, output air temperature, input and output air velocity, input and output humidity, and solar radiation. These data are used to determine saturation efficiency, cooling capacity, temperature decreases, and feasibility index. The experimental results are presented in the form of tables and graphs and analysed based on existing theories. The results showed that the evaporative cooling system could produce output temperatures up to 27.5°C with input 31.4°C at low airspeed, 27.97°C with input 31.47°C at medium speed, and 27.7°C with input 31.30°C at high air speed. It was concluded that a low airflow rate would add to the cooling efficiency, and the higher the airflow rate, the lower the cooling efficiency. The results showed that evaporative cooling is achievable with a feasibility index of 19.89 ≤ F*≤ 20.67. The results also affirmed that cooling capability is higher where the feasibility indexes are comparatively low.
format Conference or Workshop Item
author Z Hassan
Mohd Suffian Misaran @ Misran
Nancy Julius Siambun
Mohd Adzrie Radzali
author_facet Z Hassan
Mohd Suffian Misaran @ Misran
Nancy Julius Siambun
Mohd Adzrie Radzali
author_sort Z Hassan
title The effect of air velocity on the performance of the direct evaporative cooling system
title_short The effect of air velocity on the performance of the direct evaporative cooling system
title_full The effect of air velocity on the performance of the direct evaporative cooling system
title_fullStr The effect of air velocity on the performance of the direct evaporative cooling system
title_full_unstemmed The effect of air velocity on the performance of the direct evaporative cooling system
title_sort effect of air velocity on the performance of the direct evaporative cooling system
publishDate 2022
url https://eprints.ums.edu.my/id/eprint/31009/1/FULL%20TEXT.pdf
https://eprints.ums.edu.my/id/eprint/31009/2/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/31009/
https://iopscience.iop.org/article/10.1088/1757-899X/1217/1/012016/pdf
_version_ 1760230837619523584
score 13.211869

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