Experimental study of cold inflow and its effect on draft of chimney
This paper aims to study the cold air inflow into a natural draft air cooled heat exchanger chimney. In total, seven configurations of experiments were carried out in the prototype natural draft air-cooled heat exchanger model for two different supplied heat loads at approximately 0.75 kW to 1.25 kW...
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| Format: | Chapter In Book |
| Idioma: | English |
| Publicat: |
WIT Press
2012
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| Matèries: | |
| Accés en línia: | https://eprints.ums.edu.my/id/eprint/29430/1/Experimental%20study%20of%20cold%20inflow%20and%20its%20effect%20on%20draft%20of%20chimney.pdf |
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| author | Chi-Ming Chu Raymond Kwok-How Chu Md. Mizanur Rahman |
| author2 | B. Sunden |
| author_facet | B. Sunden Chi-Ming Chu Raymond Kwok-How Chu Md. Mizanur Rahman |
| author_sort | Chi-Ming Chu |
| collection | UMS |
| description | This paper aims to study the cold air inflow into a natural draft air cooled heat exchanger chimney. In total, seven configurations of experiments were carried out in the prototype natural draft air-cooled heat exchanger model for two different supplied heat loads at approximately 0.75 kW to 1.25 kW to determine the effects of wire mesh screen in the chimney performance. Temperature and velocity were measured for the configurations and heat loads. It was found that the Top-only, Top-and-Middle, and Middle-only installations were able to maintain draft velocities to within 3.0 % of the control experiment draft velocity, in spite of the resistance of the mesh. It was also found that configurations utilising mesh at the bottom had experienced a drop in draft velocity by up to 50% from the Control. The smoke flow visualisation tests clearly proved that cold air inflow phenomenon exist, and can be countered with the installation of wire mesh at the top of the model. |
| first_indexed | 2024-03-06T03:08:59Z |
| format | Chapter In Book |
| id | ums.eprints-29430 |
| institution | Universiti Malaysia Sabah |
| language | English |
| last_indexed | 2024-03-06T03:08:59Z |
| publishDate | 2012 |
| publisher | WIT Press |
| record_format | dspace |
| spelling | ums.eprints-294302023-05-19T02:57:21Z https://eprints.ums.edu.my/id/eprint/29430/ Experimental study of cold inflow and its effect on draft of chimney Chi-Ming Chu Raymond Kwok-How Chu Md. Mizanur Rahman QC Physics TA Engineering (General). Civil engineering (General) This paper aims to study the cold air inflow into a natural draft air cooled heat exchanger chimney. In total, seven configurations of experiments were carried out in the prototype natural draft air-cooled heat exchanger model for two different supplied heat loads at approximately 0.75 kW to 1.25 kW to determine the effects of wire mesh screen in the chimney performance. Temperature and velocity were measured for the configurations and heat loads. It was found that the Top-only, Top-and-Middle, and Middle-only installations were able to maintain draft velocities to within 3.0 % of the control experiment draft velocity, in spite of the resistance of the mesh. It was also found that configurations utilising mesh at the bottom had experienced a drop in draft velocity by up to 50% from the Control. The smoke flow visualisation tests clearly proved that cold air inflow phenomenon exist, and can be countered with the installation of wire mesh at the top of the model. WIT Press B. Sunden C.A. Brebbia D. Poljak 2012 Chapter In Book PeerReviewed text en https://eprints.ums.edu.my/id/eprint/29430/1/Experimental%20study%20of%20cold%20inflow%20and%20its%20effect%20on%20draft%20of%20chimney.pdf Chi-Ming Chu and Raymond Kwok-How Chu and Md. Mizanur Rahman (2012) Experimental study of cold inflow and its effect on draft of chimney. pp. 73-84. https://www.witpress.com/Secure/elibrary/papers/HT12/HT12007FU1.pdf https://doi.org/10.2495/HT120071 |
| spellingShingle | QC Physics TA Engineering (General). Civil engineering (General) Chi-Ming Chu Raymond Kwok-How Chu Md. Mizanur Rahman Experimental study of cold inflow and its effect on draft of chimney |
| title | Experimental study of cold inflow and its effect on draft of chimney |
| title_full | Experimental study of cold inflow and its effect on draft of chimney |
| title_fullStr | Experimental study of cold inflow and its effect on draft of chimney |
| title_full_unstemmed | Experimental study of cold inflow and its effect on draft of chimney |
| title_short | Experimental study of cold inflow and its effect on draft of chimney |
| title_sort | experimental study of cold inflow and its effect on draft of chimney |
| topic | QC Physics TA Engineering (General). Civil engineering (General) |
| url | https://eprints.ums.edu.my/id/eprint/29430/1/Experimental%20study%20of%20cold%20inflow%20and%20its%20effect%20on%20draft%20of%20chimney.pdf |
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