Analysis on the impact of delta T to the performance of chiller

Chiller systems had become commonly used for large residential or commercial buildings. However, the energy consumption of the chiller system also occupied a large portion of the total energy consumption of the building. Therefore, it is very important to ensure the chiller system is able to work in...

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Main Author:	Yeo, Zhi Hao
Format:	Thesis
Language:	English
Published:	2022
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/101698/1/YeoZhiHaoMSChE2022.pdf.pdf
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id	my-utm-ep.101698
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spelling	my-utm-ep.1016982023-07-03T07:51:43Z Analysis on the impact of delta T to the performance of chiller 2022 Yeo, Zhi Hao TP Chemical technology Chiller systems had become commonly used for large residential or commercial buildings. However, the energy consumption of the chiller system also occupied a large portion of the total energy consumption of the building. Therefore, it is very important to ensure the chiller system is able to work in the most energy efficient condition to reduce the electricity bill of the building. The reduction in the electricity bill is not only able to reduce the operating cost of the building, it also would be able to decrease the impact of the chiller system to the environment. Therefore, in order to achieve this objective, many research has been done to find out the energy saving measures to increase the energy efficiency of the chiller system. According to the research, increase temperature difference of chilled water is able to increase the energy efficiency of chiller system. However, many of the studies only concentrate on electricity saving. The trade-ofFthat came together with these savings did not take into account. Thus, this research aims to develop a model to evaluate the energy saving capability of increase AT of chilled water to the chiller system and the impact of AT of chilled water to the performance of the system. The research methodology includes: (1) Modeling of energy consumption of the chiller system (2) Validate model with case study (3) Manipulate the AT of chilled water and (4) Results analysis. At the end of this research, the increase of AT of chilled water is found to be able to reduce the energy consumption of the chilled water pump, which would increase the energy efficiency of the chiller system. For example, by increasing the AT of chilled water from 5°C to 8°C, the user would be able to save 6.41% of total energy consumption of the chiller system. In other word, the user could be able to reduce up to 6.33% of their electricity utility bill and greenhouse gases released per year. However, the increase of AT of chilled water would also increase the size required for cooling coil of AHU. Therefore, when implementing these improvement measures, the user would have to check whether the performance of AHU that connected to the chiller system is still able to be maintained at an acceptable level. 2022 Thesis http://eprints.utm.my/id/eprint/101698/ http://eprints.utm.my/id/eprint/101698/1/YeoZhiHaoMSChE2022.pdf.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:152283 masters Universiti Teknologi Malaysia Faculty of Engineering - School of Chemical & Energy Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Yeo, Zhi Hao Analysis on the impact of delta T to the performance of chiller
description	Chiller systems had become commonly used for large residential or commercial buildings. However, the energy consumption of the chiller system also occupied a large portion of the total energy consumption of the building. Therefore, it is very important to ensure the chiller system is able to work in the most energy efficient condition to reduce the electricity bill of the building. The reduction in the electricity bill is not only able to reduce the operating cost of the building, it also would be able to decrease the impact of the chiller system to the environment. Therefore, in order to achieve this objective, many research has been done to find out the energy saving measures to increase the energy efficiency of the chiller system. According to the research, increase temperature difference of chilled water is able to increase the energy efficiency of chiller system. However, many of the studies only concentrate on electricity saving. The trade-ofFthat came together with these savings did not take into account. Thus, this research aims to develop a model to evaluate the energy saving capability of increase AT of chilled water to the chiller system and the impact of AT of chilled water to the performance of the system. The research methodology includes: (1) Modeling of energy consumption of the chiller system (2) Validate model with case study (3) Manipulate the AT of chilled water and (4) Results analysis. At the end of this research, the increase of AT of chilled water is found to be able to reduce the energy consumption of the chilled water pump, which would increase the energy efficiency of the chiller system. For example, by increasing the AT of chilled water from 5°C to 8°C, the user would be able to save 6.41% of total energy consumption of the chiller system. In other word, the user could be able to reduce up to 6.33% of their electricity utility bill and greenhouse gases released per year. However, the increase of AT of chilled water would also increase the size required for cooling coil of AHU. Therefore, when implementing these improvement measures, the user would have to check whether the performance of AHU that connected to the chiller system is still able to be maintained at an acceptable level.
format	Thesis
qualification_level	Master's degree
author	Yeo, Zhi Hao
author_facet	Yeo, Zhi Hao
author_sort	Yeo, Zhi Hao
title	Analysis on the impact of delta T to the performance of chiller
title_short	Analysis on the impact of delta T to the performance of chiller
title_full	Analysis on the impact of delta T to the performance of chiller
title_fullStr	Analysis on the impact of delta T to the performance of chiller
title_full_unstemmed	Analysis on the impact of delta T to the performance of chiller
title_sort	analysis on the impact of delta t to the performance of chiller
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Engineering - School of Chemical & Energy Engineering
publishDate	2022
url	http://eprints.utm.my/id/eprint/101698/1/YeoZhiHaoMSChE2022.pdf.pdf
_version_	1776100750597816320

Analysis on the impact of delta T to the performance of chiller

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