Supervisory control for conventional unitary air conditioning system

The Supervisory control for conventional unitary air conditioning system is conceptually designed based on Programmable Logic Control (PLC) system. The advantage of PLC system is that it allows online monitoring continually and updates or modification can be performed interactively. This super...

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Main Author:	Morrison Buah, Lorothy
Format:	Thesis
Language:	English English English
Published:	2012
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.uthm.edu.my/2270/1/24p%20LOROTHY%20MORRISON%20BUAH.pdf http://eprints.uthm.edu.my/2270/2/LOROTHY%20MORRISON%20BUAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2270/3/LOROTHY%20MORRISON%20BUAH%20WATERMARK.pdf
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id	my-uthm-ep.2270
record_format	uketd_dc
spelling	my-uthm-ep.22702021-10-31T04:58:11Z Supervisory control for conventional unitary air conditioning system 2012-07 Morrison Buah, Lorothy TJ Mechanical engineering and machinery TJ212-225 Control engineering systems. Automatic machinery (General) The Supervisory control for conventional unitary air conditioning system is conceptually designed based on Programmable Logic Control (PLC) system. The advantage of PLC system is that it allows online monitoring continually and updates or modification can be performed interactively. This supervisory mode is applied to the conventional unitary air conditioner to avoid the frequent interruption or adjustment of the fan speed or temperature set point by users normal practice which has contributed to the surge of energy consumption due to the frequent on/off of the compressor. Three experiments have been performed at different control methods to simulate user’s daily practice. The first control method is the Variable Set point with high speed fan, the second control method is the Fixed Set point with high speed fan and the third control method is a Supervisory Control; a fixed set point with variable fan speed. The experiments have been conducted for eight (8) hours and the statistic data of accumulated energy consumption based on one unitary air conditioner with capacity of 1 Horse Power are acquired and sampled at the time interval of 30 minutes for the analysis. From these experiments, the supervisory control has consumed 4.2 kWh per day which is 82.35% compared to normal consumption of 5.1 kWh. This result translated into 0.9 kWh or 17.65% of total energy saving per day. The consistency of the air compressor operation in this control method has become a major factor in achieving indoor temperature steadiness whilst improving the energy savings. 2012-07 Thesis http://eprints.uthm.edu.my/2270/ http://eprints.uthm.edu.my/2270/1/24p%20LOROTHY%20MORRISON%20BUAH.pdf text en public http://eprints.uthm.edu.my/2270/2/LOROTHY%20MORRISON%20BUAH%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/2270/3/LOROTHY%20MORRISON%20BUAH%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Elektrik dan Elektronik
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TJ Mechanical engineering and machinery TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery TJ Mechanical engineering and machinery Morrison Buah, Lorothy Supervisory control for conventional unitary air conditioning system
description	The Supervisory control for conventional unitary air conditioning system is conceptually designed based on Programmable Logic Control (PLC) system. The advantage of PLC system is that it allows online monitoring continually and updates or modification can be performed interactively. This supervisory mode is applied to the conventional unitary air conditioner to avoid the frequent interruption or adjustment of the fan speed or temperature set point by users normal practice which has contributed to the surge of energy consumption due to the frequent on/off of the compressor. Three experiments have been performed at different control methods to simulate user’s daily practice. The first control method is the Variable Set point with high speed fan, the second control method is the Fixed Set point with high speed fan and the third control method is a Supervisory Control; a fixed set point with variable fan speed. The experiments have been conducted for eight (8) hours and the statistic data of accumulated energy consumption based on one unitary air conditioner with capacity of 1 Horse Power are acquired and sampled at the time interval of 30 minutes for the analysis. From these experiments, the supervisory control has consumed 4.2 kWh per day which is 82.35% compared to normal consumption of 5.1 kWh. This result translated into 0.9 kWh or 17.65% of total energy saving per day. The consistency of the air compressor operation in this control method has become a major factor in achieving indoor temperature steadiness whilst improving the energy savings.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Morrison Buah, Lorothy
author_facet	Morrison Buah, Lorothy
author_sort	Morrison Buah, Lorothy
title	Supervisory control for conventional unitary air conditioning system
title_short	Supervisory control for conventional unitary air conditioning system
title_full	Supervisory control for conventional unitary air conditioning system
title_fullStr	Supervisory control for conventional unitary air conditioning system
title_full_unstemmed	Supervisory control for conventional unitary air conditioning system
title_sort	supervisory control for conventional unitary air conditioning system
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Elektrik dan Elektronik
publishDate	2012
url	http://eprints.uthm.edu.my/2270/1/24p%20LOROTHY%20MORRISON%20BUAH.pdf http://eprints.uthm.edu.my/2270/2/LOROTHY%20MORRISON%20BUAH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2270/3/LOROTHY%20MORRISON%20BUAH%20WATERMARK.pdf
_version_	1747830932883111936

Supervisory control for conventional unitary air conditioning system

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