Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri

The arrangement of air-cooled chillers is one of the important factors to efficiently reject heat to the atmosphere. In this work, two units of air-cooled chillers are installed on different floor level. This arrangement affects the ACC units and leads to system failure. CFD simulation is conducted...

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Main Author:	Zamri, Nur Faranini
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Mechanics applied to machinery Dynamics Machine design and drawing Machine construction (General)
Online Access:	https://ir.uitm.edu.my/id/eprint/32534/1/32534.pdf
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id	my-uitm-ir.32534
record_format	uketd_dc
spelling	my-uitm-ir.325342020-09-15T03:48:52Z Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri 2020-03 Zamri, Nur Faranini Mechanics applied to machinery. Dynamics Machine design and drawing Machine construction (General) The arrangement of air-cooled chillers is one of the important factors to efficiently reject heat to the atmosphere. In this work, two units of air-cooled chillers are installed on different floor level. This arrangement affects the ACC units and leads to system failure. CFD simulation is conducted to observe the airflow of the actual arrangement. Two conditions are simulated in this study which are no-wind and with-wind condition. Sensitivity analysis is conducted to obtain the appropriate computational domain for the simulation. The effects of varying the distance between the ACCs is also analysed with six different spacing (3.6 m, 4.0 m, 5.0 m, 6.0 m, 7.0 m and 8.0 m). The effects of installing a barrier between the units is observed with five proposed barrier height (2.04 m, 2.34 m, 2.64 m, 2.94 m and 3.24 m). The airflow for each case is analysed in terms of velocity and temperature distribution, the velocity streamline and the velocity vector. For the actual arrangement of the ACCs, the hot air discharged accumulated at the top and between the units, due to inadequate space for circulation of air. Varying the distance between the ACCs does not improve the circulation of hot air between the units. Increasing the spacing between the units only add up the area needed for installation. The barrier installed separates the hot air discharged from flowing to the unit besides it. Due to the limited space for circulation of air, the hot air accumulates in between the units and the barrier. Each height of barrier gives different circulation of air at the area of interest. From the results, the recommended barrier height to overcome the problems occurred is 2.94 m. 2020-03 Thesis https://ir.uitm.edu.my/id/eprint/32534/ https://ir.uitm.edu.my/id/eprint/32534/1/32534.pdf text en public masters Universiti Teknologi MARA Faculty of Mechanical Engineering Husain, Hazran (Ir.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Husain, Hazran (Ir.)
topic	Mechanics applied to machinery Dynamics Machine design and drawing Machine construction (General)
spellingShingle	Mechanics applied to machinery Dynamics Machine design and drawing Machine construction (General) Zamri, Nur Faranini Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri
description	The arrangement of air-cooled chillers is one of the important factors to efficiently reject heat to the atmosphere. In this work, two units of air-cooled chillers are installed on different floor level. This arrangement affects the ACC units and leads to system failure. CFD simulation is conducted to observe the airflow of the actual arrangement. Two conditions are simulated in this study which are no-wind and with-wind condition. Sensitivity analysis is conducted to obtain the appropriate computational domain for the simulation. The effects of varying the distance between the ACCs is also analysed with six different spacing (3.6 m, 4.0 m, 5.0 m, 6.0 m, 7.0 m and 8.0 m). The effects of installing a barrier between the units is observed with five proposed barrier height (2.04 m, 2.34 m, 2.64 m, 2.94 m and 3.24 m). The airflow for each case is analysed in terms of velocity and temperature distribution, the velocity streamline and the velocity vector. For the actual arrangement of the ACCs, the hot air discharged accumulated at the top and between the units, due to inadequate space for circulation of air. Varying the distance between the ACCs does not improve the circulation of hot air between the units. Increasing the spacing between the units only add up the area needed for installation. The barrier installed separates the hot air discharged from flowing to the unit besides it. Due to the limited space for circulation of air, the hot air accumulates in between the units and the barrier. Each height of barrier gives different circulation of air at the area of interest. From the results, the recommended barrier height to overcome the problems occurred is 2.94 m.
format	Thesis
qualification_level	Master's degree
author	Zamri, Nur Faranini
author_facet	Zamri, Nur Faranini
author_sort	Zamri, Nur Faranini
title	Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri
title_short	Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri
title_full	Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri
title_fullStr	Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri
title_full_unstemmed	Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri
title_sort	airflow study of air-cooled chillers installed at different floor level / nur faranini zamri
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Mechanical Engineering
publishDate	2020
url	https://ir.uitm.edu.my/id/eprint/32534/1/32534.pdf
_version_	1783734171553759232

Airflow study of air-cooled chillers installed at different floor level / Nur Faranini Zamri

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