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Assisted heat transfer and shaft work targets for increased total site heat integration

Total Site Heat Integration (TSHI) provides a valuable framework for practical integration of multiple energy users. Previous studies have introduced the idea of utilising process heat recovery pockets to assist TSHI. However, these methods are shown to be effect...

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Main Authors:	Timothy, G. Walmsley, Martin, J. Atkins, Amir, H. Tarighaleslami, Liew, Peng Yen
Format:	Article
Published:	AIDIC 2016
Subjects:	T Technology
Online Access:	http://eprints.utm.my/id/eprint/68450/ http://dx.doi.org/0.3303/CET1652068
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id	my.utm.68450
record_format	eprints
spelling	my.utm.684502017-11-20T08:52:08Z http://eprints.utm.my/id/eprint/68450/ Assisted heat transfer and shaft work targets for increased total site heat integration Timothy, G. Walmsley Martin, J. Atkins Amir, H. Tarighaleslami Liew, Peng Yen T Technology Total Site Heat Integration (TSHI) provides a valuable framework for practical integration of multiple energy users. Previous studies have introduced the idea of utilising process heat recovery pockets to assist TSHI. However, these methods are shown to be effective for only some Total Site (TS) problems. As a result, this paper presents a new method for calculating assisted heat transfer and shaft work targets for an example TS problem. Analysis results show that assisted heat transfer increases TSHI only when a process heat recovery pocket spans the TS Pinch Region. The maximum assisted TSHI can be targeted by comparing each heat recovery pocket to the Site Utility Grand Composite Curve (SUGCC) using background/foreground analysis. Where heat recovery pockets span two steam pressure levels away from the TS Pinch Region (usually above), the example shows the potential for assisted shaft work production. In this case, the source segment of the heat recovery pocket generates steam (e.g. MPS), which replaces steam that would otherwise have been extracted from a steam turbine. The sink segment of the heat recovery pocket consumes lower pressure steam (e.g. LPS), which is extracted from the turbine. If a heat recovery pocket falls outside these two situations (assuming direct inter - process integration is disallowed), the entire pocket should be recovered internal to a process. AIDIC 2016-01-08 Article PeerReviewed Timothy, G. Walmsley and Martin, J. Atkins and Amir, H. Tarighaleslami and Liew, Peng Yen (2016) Assisted heat transfer and shaft work targets for increased total site heat integration. Chemical Engineering Transactions, 52 . pp. 403-408. ISSN 2283-9216 http://dx.doi.org/0.3303/CET1652068
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	T Technology
spellingShingle	T Technology Timothy, G. Walmsley Martin, J. Atkins Amir, H. Tarighaleslami Liew, Peng Yen Assisted heat transfer and shaft work targets for increased total site heat integration
description	Total Site Heat Integration (TSHI) provides a valuable framework for practical integration of multiple energy users. Previous studies have introduced the idea of utilising process heat recovery pockets to assist TSHI. However, these methods are shown to be effective for only some Total Site (TS) problems. As a result, this paper presents a new method for calculating assisted heat transfer and shaft work targets for an example TS problem. Analysis results show that assisted heat transfer increases TSHI only when a process heat recovery pocket spans the TS Pinch Region. The maximum assisted TSHI can be targeted by comparing each heat recovery pocket to the Site Utility Grand Composite Curve (SUGCC) using background/foreground analysis. Where heat recovery pockets span two steam pressure levels away from the TS Pinch Region (usually above), the example shows the potential for assisted shaft work production. In this case, the source segment of the heat recovery pocket generates steam (e.g. MPS), which replaces steam that would otherwise have been extracted from a steam turbine. The sink segment of the heat recovery pocket consumes lower pressure steam (e.g. LPS), which is extracted from the turbine. If a heat recovery pocket falls outside these two situations (assuming direct inter - process integration is disallowed), the entire pocket should be recovered internal to a process.
format	Article
author	Timothy, G. Walmsley Martin, J. Atkins Amir, H. Tarighaleslami Liew, Peng Yen
author_facet	Timothy, G. Walmsley Martin, J. Atkins Amir, H. Tarighaleslami Liew, Peng Yen
author_sort	Timothy, G. Walmsley
title	Assisted heat transfer and shaft work targets for increased total site heat integration
title_short	Assisted heat transfer and shaft work targets for increased total site heat integration
title_full	Assisted heat transfer and shaft work targets for increased total site heat integration
title_fullStr	Assisted heat transfer and shaft work targets for increased total site heat integration
title_full_unstemmed	Assisted heat transfer and shaft work targets for increased total site heat integration
title_sort	assisted heat transfer and shaft work targets for increased total site heat integration
publisher	AIDIC
publishDate	2016
url	http://eprints.utm.my/id/eprint/68450/ http://dx.doi.org/0.3303/CET1652068
_version_	1643655948868255744
score	13.211869

Assisted heat transfer and shaft work targets for increased total site heat integration

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