Break-off model for CaCO3 fouling in heat exchangers. (January 2018)

• Record Type: Journal Article
• Authors: Babuška, Ivo; Silva, Renato S.; Actor, Jonas
• Is Part Of: International journal of heat and mass transfer. Volume 116(2018)
• Page Start: 104
• Page End: 114
• Publication Date: 2018-01
• Subjects: Heat exchanger -- Crystallization fouling -- CaCO3 -- Aging -- Thermal stress; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2017.08.123
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: The model considers the aging of CaCO 3 properties. The model evaluates the thermal stress and temperature distribution in the fouling layer. The model can represent the break-offs encountered in the experimental data. Abstract: CaCO 3 deposition on surfaces in heat exchangers is a serious problem across several types of industries, and there are many numerical models across the literature that attempt to understand and predict its behavior. In this work, we present a break-off model that considers both the aging of the CaCO 3 and the temperature distribution in the layer. By doing so, we allow for layers of the fouling material to break due to thermal stress. Our results show this model agrees with experimental data better than previous models, and it explains the breaking behavior usually found in such data.