Monitoring bubble size distribution using pressure fluctuations.
Bubble size and distribution are key monitoring parameters for the heat and mass transfer performance in gas-liquid bubble columns and gas-liquid-sold fluidized bed processes. Many of the techniques currently in use are expensive, time consuming and intrude into the systems. Physical intrusion disru...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2010
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| Online Access: | http://hdl.handle.net/10356/39558 |
| _version_ | 1824456336571629568 |
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| author | Foo, Jing Quan. |
| author2 | Lau Wai Man |
| author_facet | Lau Wai Man Foo, Jing Quan. |
| author_sort | Foo, Jing Quan. |
| collection | NTU |
| description | Bubble size and distribution are key monitoring parameters for the heat and mass transfer performance in gas-liquid bubble columns and gas-liquid-sold fluidized bed processes. Many of the techniques currently in use are expensive, time consuming and intrude into the systems. Physical intrusion disrupts the original flow of the bubbles and affects the results obtained.
Predicting bubble size using pressure fluctuations caused by bubbles is becoming a popular method. Power spectral analysis and chaotic theory analysis are techniques developed in recent years. These “batch” techniques are unable to provide continuous monitoring of the bubble sizes due to post data processing required. Nonetheless, studies involving dynamic gas disengagement have shown that it is possible to read bubble size distributions from pressure fluctuations. Pressure fluctuation is a promising method due to its ease and low cost of implementation, non-intrusive nature and potential online-monitoring capability.
This study investigates the feasibility of using the direct pressure fluctuation signal to predict bubble size and its distribution. The proposed method was tested experimentally and verified using the photographic method. The basis of comparison used was the bubble cap diameter and volume diameter, the volume diameter showed accuracy of up to 89%. |
| first_indexed | 2025-02-19T03:52:29Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/39558 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:52:29Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/395582023-03-03T15:41:14Z Monitoring bubble size distribution using pressure fluctuations. Foo, Jing Quan. Lau Wai Man School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering::Chemical plants Bubble size and distribution are key monitoring parameters for the heat and mass transfer performance in gas-liquid bubble columns and gas-liquid-sold fluidized bed processes. Many of the techniques currently in use are expensive, time consuming and intrude into the systems. Physical intrusion disrupts the original flow of the bubbles and affects the results obtained. Predicting bubble size using pressure fluctuations caused by bubbles is becoming a popular method. Power spectral analysis and chaotic theory analysis are techniques developed in recent years. These “batch” techniques are unable to provide continuous monitoring of the bubble sizes due to post data processing required. Nonetheless, studies involving dynamic gas disengagement have shown that it is possible to read bubble size distributions from pressure fluctuations. Pressure fluctuation is a promising method due to its ease and low cost of implementation, non-intrusive nature and potential online-monitoring capability. This study investigates the feasibility of using the direct pressure fluctuation signal to predict bubble size and its distribution. The proposed method was tested experimentally and verified using the photographic method. The basis of comparison used was the bubble cap diameter and volume diameter, the volume diameter showed accuracy of up to 89%. Bachelor of Engineering (Chemical and Biomolecular Engineering) 2010-05-31T06:04:30Z 2010-05-31T06:04:30Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/39558 en Nanyang Technological University 53 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Chemical engineering::Chemical plants Foo, Jing Quan. Monitoring bubble size distribution using pressure fluctuations. |
| title | Monitoring bubble size distribution using pressure fluctuations. |
| title_full | Monitoring bubble size distribution using pressure fluctuations. |
| title_fullStr | Monitoring bubble size distribution using pressure fluctuations. |
| title_full_unstemmed | Monitoring bubble size distribution using pressure fluctuations. |
| title_short | Monitoring bubble size distribution using pressure fluctuations. |
| title_sort | monitoring bubble size distribution using pressure fluctuations |
| topic | DRNTU::Engineering::Chemical engineering::Chemical plants |
| url | http://hdl.handle.net/10356/39558 |
| work_keys_str_mv | AT foojingquan monitoringbubblesizedistributionusingpressurefluctuations |