The effect of outer surface roughness for evaporator tube in the desalination plant

The purpose of this study is to investigate the evaporator tube performance with different outer surface roughness and under different feeder water load. A test rig with horizontal aluminum evaporator tube had been designed and fabricated to collect the steam from boiler and converted it into conden...

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Main Author:	Lim, Chih Hoo
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/81075/1/LimChihHooMFKM2015.pdf
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id	my-utm-ep.81075
record_format	uketd_dc
spelling	my-utm-ep.810752019-07-24T03:09:18Z The effect of outer surface roughness for evaporator tube in the desalination plant 2015-01 Lim, Chih Hoo TJ Mechanical engineering and machinery The purpose of this study is to investigate the evaporator tube performance with different outer surface roughness and under different feeder water load. A test rig with horizontal aluminum evaporator tube had been designed and fabricated to collect the steam from boiler and converted it into condensate. The study was carried out on two aluminum evaporator tubes with different outer surface roughness and under five different feeder water loads. The performance of each evaporator tube was based on the collected amount of condensate. A theoretical relationship was modified from previous study which derived based on the film wise condensation Nusselt’s equation, heat transfer equation and falling film equation. Theoretical calculation was conducted with Maple software and the outcomes were compared with the experimental results. Results showed that the mass flow rate of the condensate increases as the feeder water load increases for both the tube. The evaporator tube with higher outer surface roughness showed better performance compared with the one with lower outer surface roughness. Also, the modified theoretical relationship showed higher accuracy compared to the previous study. Based on the results, the evaporator tube outer surface roughness plays an important role in the evaporator tube performance. 2015-01 Thesis http://eprints.utm.my/id/eprint/81075/ http://eprints.utm.my/id/eprint/81075/1/LimChihHooMFKM2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:120142 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 Lim, Chih Hoo The effect of outer surface roughness for evaporator tube in the desalination plant
description	The purpose of this study is to investigate the evaporator tube performance with different outer surface roughness and under different feeder water load. A test rig with horizontal aluminum evaporator tube had been designed and fabricated to collect the steam from boiler and converted it into condensate. The study was carried out on two aluminum evaporator tubes with different outer surface roughness and under five different feeder water loads. The performance of each evaporator tube was based on the collected amount of condensate. A theoretical relationship was modified from previous study which derived based on the film wise condensation Nusselt’s equation, heat transfer equation and falling film equation. Theoretical calculation was conducted with Maple software and the outcomes were compared with the experimental results. Results showed that the mass flow rate of the condensate increases as the feeder water load increases for both the tube. The evaporator tube with higher outer surface roughness showed better performance compared with the one with lower outer surface roughness. Also, the modified theoretical relationship showed higher accuracy compared to the previous study. Based on the results, the evaporator tube outer surface roughness plays an important role in the evaporator tube performance.
format	Thesis
qualification_level	Master's degree
author	Lim, Chih Hoo
author_facet	Lim, Chih Hoo
author_sort	Lim, Chih Hoo
title	The effect of outer surface roughness for evaporator tube in the desalination plant
title_short	The effect of outer surface roughness for evaporator tube in the desalination plant
title_full	The effect of outer surface roughness for evaporator tube in the desalination plant
title_fullStr	The effect of outer surface roughness for evaporator tube in the desalination plant
title_full_unstemmed	The effect of outer surface roughness for evaporator tube in the desalination plant
title_sort	effect of outer surface roughness for evaporator tube in the desalination plant
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/81075/1/LimChihHooMFKM2015.pdf
_version_	1747818303738347520

The effect of outer surface roughness for evaporator tube in the desalination plant

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