Thermal stress analysis for exhaust heat exchanger

Thermal stress induced in an object or structural member by restraint against movement is required to accommodate temperature changes. In this paper, the thermal stress and deformation of the exhaust heat exchanger on board a ship is analysed. The flow and temperature distributions of exhaust heat e...

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Main Author:	Ismail, Mohd. Izwan
Format:	Thesis
Language:	English
Published:	2016
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/81155/1/MohdIzwanIsmailMFKM2016.pdf
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id	my-utm-ep.81155
record_format	uketd_dc
spelling	my-utm-ep.811552019-07-24T03:34:56Z Thermal stress analysis for exhaust heat exchanger 2016-06 Ismail, Mohd. Izwan TJ Mechanical engineering and machinery Thermal stress induced in an object or structural member by restraint against movement is required to accommodate temperature changes. In this paper, the thermal stress and deformation of the exhaust heat exchanger on board a ship is analysed. The flow and temperature distributions of exhaust heat exchanger are conducted in ANSYS Static Structural by the coupled analysis of fluid and solid zones. According to the numerical analysis it is found that the thermal stress is increasing non-linearly with the increase of inlet sea water temperature. By increasing inlet sea water temperature will increase thermal stress. The result indicates that the maximum stress is equal to 479 MPa which is exceed the yield stress. Therefore, current heat exchanger being used is insufficient in design. By varying the different sea water inlet temperature and sea water inlet pressure at allowable limit still shows that maximum Von Misses Stress for current design is exceeding yield stress. The new design is proposed by increasing of thickness plate from 2mm to 3mm and proven to produce maximum Von Misses Stress below the yield stress which is equal to 245MPa. Percentage area for total thermal stress is also much lower compare to current design. 2016-06 Thesis http://eprints.utm.my/id/eprint/81155/ http://eprints.utm.my/id/eprint/81155/1/MohdIzwanIsmailMFKM2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:120237 masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ismail, Mohd. Izwan Thermal stress analysis for exhaust heat exchanger
description	Thermal stress induced in an object or structural member by restraint against movement is required to accommodate temperature changes. In this paper, the thermal stress and deformation of the exhaust heat exchanger on board a ship is analysed. The flow and temperature distributions of exhaust heat exchanger are conducted in ANSYS Static Structural by the coupled analysis of fluid and solid zones. According to the numerical analysis it is found that the thermal stress is increasing non-linearly with the increase of inlet sea water temperature. By increasing inlet sea water temperature will increase thermal stress. The result indicates that the maximum stress is equal to 479 MPa which is exceed the yield stress. Therefore, current heat exchanger being used is insufficient in design. By varying the different sea water inlet temperature and sea water inlet pressure at allowable limit still shows that maximum Von Misses Stress for current design is exceeding yield stress. The new design is proposed by increasing of thickness plate from 2mm to 3mm and proven to produce maximum Von Misses Stress below the yield stress which is equal to 245MPa. Percentage area for total thermal stress is also much lower compare to current design.
format	Thesis
qualification_level	Master's degree
author	Ismail, Mohd. Izwan
author_facet	Ismail, Mohd. Izwan
author_sort	Ismail, Mohd. Izwan
title	Thermal stress analysis for exhaust heat exchanger
title_short	Thermal stress analysis for exhaust heat exchanger
title_full	Thermal stress analysis for exhaust heat exchanger
title_fullStr	Thermal stress analysis for exhaust heat exchanger
title_full_unstemmed	Thermal stress analysis for exhaust heat exchanger
title_sort	thermal stress analysis for exhaust heat exchanger
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2016
url	http://eprints.utm.my/id/eprint/81155/1/MohdIzwanIsmailMFKM2016.pdf
_version_	1747818310127321088

Thermal stress analysis for exhaust heat exchanger

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