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Dissertation
A study of fouling control in heat exchangers with electronic anti-fouling technology
Doctor of Philosophy (Ph.D.), Drexel University
1998
DOI:
https://doi.org/10.17918/00000611
Abstract
The objective of the present study was to investigate the validity of an electronic anti-fouling (EAF) technology, an innovative technique to mitigate precipitation fouling in a heat exchanger. The EAF technology precipitates dissolved ions into insoluble crystals. In order to accelerate this precipitation, the EAF technology utilizes a solenoid-induced molecular agitation. The present study examined the parameters which influence the induced electric field created by time-varying current signal in a solenoid and the effect of fouling parameters on the EAF treatment. The general fouling data in the present study were obtained from shell-and-tube heat exchanger operating in a once-though counter flow system. Three parameters were varied, which include flow velocity, concentration of CaCO3, and temperature. Effects of these parameters were examined in terms of the fouling resistance. In order to investigate the validity of EAF technology, a series of tests were conducted in a single shell-and-tube heat exchanger by changing concentration, velocity, and temperature with and without the EAF treatment. To check the validity of the EAF treatment in a plate-and-frame heat exchanger (Alfa Laval M3) whose thermal performance was very sensitive to fouling, harsh fouling tests were also carried out in recirculation and once-through system.
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Details
- Title
- A study of fouling control in heat exchangers with electronic anti-fouling technology
- Creators
- Byung Gab Choi
- Contributors
- Young I. Cho (Advisor)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- xiii, 189 pages
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Mechanical Engineering (and Mechanics) [Historical]; Drexel University
- Other Identifier
- 991014970214504721