Book chapter
Chapter 8 - Nonchemical methods to control scale and deposit formation
Water-Formed Deposits, pp 167-193
2022
Abstract
This chapter describes nonchemical water treatment methods, which include permanent magnets, solenoid coils, radio-frequency electric fields, high-voltage capacitance systems (i.e., electrostatic devices), and catalytic materials. The operating principle of the physical water treatment (PWT) is to produce colloidal particles of mineral ions in water, a process that is called bulk precipitation. In recirculating cooling water, the colloidal particles grow, resulting in particulate fouling (i.e., soft sludge coating) on a heat exchanger surface instead of precipitation fouling (i.e., hard deposit). Thus, if and when there is a sufficient shear force in a heat exchanger to remove the soft sludge coating, the PWT can keep the heat exchanger surface scale-free.
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5 citations in Scopus
Details
- Title
- Chapter 8 - Nonchemical methods to control scale and deposit formation
- Creators
- Young I. Cho - Drexel UniversityHyoung-Sup Kim - Onvector, Inc., King of Prussia, PA, United States
- Publication Details
- Water-Formed Deposits, pp 167-193
- Publisher
- Elsevier
- Resource Type
- Book chapter
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Scopus ID
- 2-s2.0-85137852409
- Other Identifier
- 991019174516104721