Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow

Thermal discharges such as from power stations or industries into rivers causing degradation of water quality. A study was conducted in the laboratory to investigate the changes of the ambient temperature caused by thermal effluent discharged into the flow. A cross–flow thermal effluent is discharge...

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Main Authors: Ibrahim, Zulkiflee, Abdul Latiff, Abd. Aziz, Hashim, Noor Baharim, Halim, Herni, Mokhtar Kamal, Nurul Hana, Haron, Nuryazmeen Farhan
Format: Article
Language:English
Published: Universiti Teknologi Malaysia 2009
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Online Access:http://eprints.utm.my/id/eprint/36238/2/Experimental-Investigation-On-Behaviour-Of-Cross-Flow-Thermal-Effluent-Discharge-In-Free-Surface-Flow.pdf
http://eprints.utm.my/id/eprint/36238/
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spelling my.utm.362382017-02-15T00:31:50Z http://eprints.utm.my/id/eprint/36238/ Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow Ibrahim, Zulkiflee Abdul Latiff, Abd. Aziz Hashim, Noor Baharim Halim, Herni Mokhtar Kamal, Nurul Hana Haron, Nuryazmeen Farhan TA Engineering (General). Civil engineering (General) Thermal discharges such as from power stations or industries into rivers causing degradation of water quality. A study was conducted in the laboratory to investigate the changes of the ambient temperature caused by thermal effluent discharged into the flow. A cross–flow thermal effluent is discharged from the bed of the channel. Thermal effluent flow rates of 0.133 liter/s and 0.05 liter/s and ambient flow rates of 20 liter/s and 10 liter/s were used in the study. Observation of thermal mixing process in the channel is concentrated in the near-field zone. The thermal dispersion patterns were observed along the channel through the isothermal lines; while the changes of ambient temperature are studied from the experimental data. The results indicate that the temperature changes are drastic in the near-field mixing zone. Then it gradually reduces along the channel until reaches the far-field mixing zone. Lower layer of the flow experiences high excess temperature compared to middle and upper layers of the flow. Meanwhile, larger effluent flow rate produces higher excess temperature in the receiving water body than small effluent flow rate. Based on experimental data, equations of excess temperature and dispersion were established Universiti Teknologi Malaysia 2009 Article PeerReviewed text/html en http://eprints.utm.my/id/eprint/36238/2/Experimental-Investigation-On-Behaviour-Of-Cross-Flow-Thermal-Effluent-Discharge-In-Free-Surface-Flow.pdf Ibrahim, Zulkiflee and Abdul Latiff, Abd. Aziz and Hashim, Noor Baharim and Halim, Herni and Mokhtar Kamal, Nurul Hana and Haron, Nuryazmeen Farhan (2009) Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow. Malaysian Journal of Civil Engineering, 21 (1). pp. 82-97. ISSN 1823-7843
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/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Ibrahim, Zulkiflee
Abdul Latiff, Abd. Aziz
Hashim, Noor Baharim
Halim, Herni
Mokhtar Kamal, Nurul Hana
Haron, Nuryazmeen Farhan
Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
description Thermal discharges such as from power stations or industries into rivers causing degradation of water quality. A study was conducted in the laboratory to investigate the changes of the ambient temperature caused by thermal effluent discharged into the flow. A cross–flow thermal effluent is discharged from the bed of the channel. Thermal effluent flow rates of 0.133 liter/s and 0.05 liter/s and ambient flow rates of 20 liter/s and 10 liter/s were used in the study. Observation of thermal mixing process in the channel is concentrated in the near-field zone. The thermal dispersion patterns were observed along the channel through the isothermal lines; while the changes of ambient temperature are studied from the experimental data. The results indicate that the temperature changes are drastic in the near-field mixing zone. Then it gradually reduces along the channel until reaches the far-field mixing zone. Lower layer of the flow experiences high excess temperature compared to middle and upper layers of the flow. Meanwhile, larger effluent flow rate produces higher excess temperature in the receiving water body than small effluent flow rate. Based on experimental data, equations of excess temperature and dispersion were established
format Article
author Ibrahim, Zulkiflee
Abdul Latiff, Abd. Aziz
Hashim, Noor Baharim
Halim, Herni
Mokhtar Kamal, Nurul Hana
Haron, Nuryazmeen Farhan
author_facet Ibrahim, Zulkiflee
Abdul Latiff, Abd. Aziz
Hashim, Noor Baharim
Halim, Herni
Mokhtar Kamal, Nurul Hana
Haron, Nuryazmeen Farhan
author_sort Ibrahim, Zulkiflee
title Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
title_short Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
title_full Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
title_fullStr Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
title_full_unstemmed Experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
title_sort experimental investigation on behaviour of cross-flow thermal effluent discharge in free surface flow
publisher Universiti Teknologi Malaysia
publishDate 2009
url http://eprints.utm.my/id/eprint/36238/2/Experimental-Investigation-On-Behaviour-Of-Cross-Flow-Thermal-Effluent-Discharge-In-Free-Surface-Flow.pdf
http://eprints.utm.my/id/eprint/36238/
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score 13.18916