Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration

This thesis presents the application of fuzzy logic control, using an electronic expansion valve, to control refrigerant flow in a commercial container refrigeration system. Test results comparing conventional proportional-integral and derivative (PID) control versus fuzzy control have shown that fu...

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Main Author: Chia, Peng Kiang.
Other Authors: Wong, Yew Wah
Format: Theses and Dissertations
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/19991
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-199912023-03-11T17:06:50Z Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration Chia, Peng Kiang. Wong, Yew Wah School of Mechanical and Production Engineering DRNTU::Engineering::Mechanical engineering::Control engineering This thesis presents the application of fuzzy logic control, using an electronic expansion valve, to control refrigerant flow in a commercial container refrigeration system. Test results comparing conventional proportional-integral and derivative (PID) control versus fuzzy control have shown that fuzzy control performs better in terms of smaller overshoot of the superheat and faster settling time of the superheat response during the evaporator load pulldown mode. A better coefficient of performance (COP) was obtained with the use of the electronic expansion valve (EEV) together with a microprocessor to control a constant superheat, compared to the conventioanl thermostatic expansion valve (TEV), which is limited in terms of delivering a stable and accurate superheat control, as well as in responses to changes in operating conditions Master of Engineering (MPE) 2009-12-14T07:54:54Z 2009-12-14T07:54:54Z 1996 1996 Thesis http://hdl.handle.net/10356/19991 en NANYANG TECHNOLOGICAL UNIVERSITY 167 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering::Control engineering
spellingShingle DRNTU::Engineering::Mechanical engineering::Control engineering
Chia, Peng Kiang.
Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
description This thesis presents the application of fuzzy logic control, using an electronic expansion valve, to control refrigerant flow in a commercial container refrigeration system. Test results comparing conventional proportional-integral and derivative (PID) control versus fuzzy control have shown that fuzzy control performs better in terms of smaller overshoot of the superheat and faster settling time of the superheat response during the evaporator load pulldown mode. A better coefficient of performance (COP) was obtained with the use of the electronic expansion valve (EEV) together with a microprocessor to control a constant superheat, compared to the conventioanl thermostatic expansion valve (TEV), which is limited in terms of delivering a stable and accurate superheat control, as well as in responses to changes in operating conditions
author2 Wong, Yew Wah
author_facet Wong, Yew Wah
Chia, Peng Kiang.
format Theses and Dissertations
author Chia, Peng Kiang.
author_sort Chia, Peng Kiang.
title Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
title_short Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
title_full Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
title_fullStr Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
title_full_unstemmed Optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
title_sort optimisation of evaporator performance with adaptive superheat algorithm using fuzzy logic control for container refrigeration
publishDate 2009
url http://hdl.handle.net/10356/19991
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