Effect of fouling on falling film evaporator performance in industrial conditions of fruit juice concentrate production
Authors:
- Piotr Cyklis
Abstract
In food processing, falling film evaporators are commonly used and their energy consumption is a significant operating cost for the production of juice concentrate. This cost is influenced not only by the evaporator design but also by the method of operation, particularly the fouling of the heat exchanger walls formed during the operation of the evaporator on the inner surface of the tubes from the juice side. These deposits are a significant component of the total wall thermal resistance, thus hindering evaporation. This issue results in a production decrease and requires evaporator cleaning. The publication presents an analysis of the calculation methods of fouling formation and their thermal resistance based on a literature review on evaporators for the production of sugar and milk. The obtained results were then processed by adjusting the coefficients to the experimental results obtained during the actual production of fruit juice concentrate. The decrease in actual evaporator efficiency was used to experimentally verify the theoretical calculations. This analysis resulted in a final simple formula for the estimation of the fouling influence on evaporator performance under industrial conditions. Simulations have shown that a sharp drop in evaporator efficiency may occur with insufficient recirculation or prolonged oper-ation without cleaning. In this case, the amount of sediment can increase and cause a change in the boiling character and thus a rapid decrease in evaporation.
- Record ID
- CUT74a27441de494f44b9427f6f7bf34a3d
- Publication categories
- ;
- Author
- Journal series
- Journal of Food Engineering, ISSN 0260-8774, e-ISSN 1873-5770
- Issue year
- 2022
- Vol
- 317
- Pages
- [1-13]
- Article number
- 110884
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 12-13; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 317
- Keywords in English
- heat transfer, falling film evaporator, industrial conditions
- ASJC Classification
- DOI
- DOI:10.1016/j.jfoodeng.2021.110884 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S0260877421004106 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT74a27441de494f44b9427f6f7bf34a3d/
- URN
urn:pkr-prod:CUT74a27441de494f44b9427f6f7bf34a3d
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.