Water falling film evaporation on a corrugated plate

This paper presents experimental results on the study of falling water film evaporation on a single vertical corrugated plate. The corrugated plate module, made of stainless steel having a total heat transfer area of 0.267 m2, was fabricated and tested in a pilot scale setup. The special geometry of...

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Bibliographic Details
Published in:International journal of thermal sciences 2014-07, Vol.81 (81), p.29-37
Main Authors: Gonda, Armel, Lancereau, Philippe, Bandelier, Philippe, Luo, Lingai, Fan, Yilin, Benezech, Sylvain
Format: Article
Language:English
Subjects:
Applied sciences
Correlation
Corrugated plate
Corrugated plates
Energy
Energy. Thermal use of fuels
Evaporation
Exact sciences and technology
Falling
Falling film
Heat transfer
Liquids
Modules
Refrigerating engineering
Refrigerating engineering. Cryogenics. Food conservation
Techniques. Materials
Theoretical studies. Data and constants. Metering
Water film
Wetting
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Summary:This paper presents experimental results on the study of falling water film evaporation on a single vertical corrugated plate. The corrugated plate module, made of stainless steel having a total heat transfer area of 0.267 m2, was fabricated and tested in a pilot scale setup. The special geometry of the plate module allows the heat transfer between the liquid flowing in parallel channels inside de module and a film flowing on the two outer faces. Hydrodynamic and thermal tests were carried out. Results of heat transfer for evaporation from the surface of the water film are presented and compared to various correlations found in the literature. It is observed that when the surface is invaded by the film, decreasing film flow-rate provides higher ratio of wetted surface compared to increasing film flow-rate. The enhancement of heat transfer has been observed. Based on our own results, a new correlation has been proposed to predict the evaporative heat transfer by falling film. •A study of falling water film evaporation on a single vertical corrugated plate is presented.•A flow distribution header is designed to spread a uniform liquid film over the width of both sides of the plate.•The enhancement of heat transfer has been observed.•A new correlation has been proposed to predict the evaporative heat transfer by falling film.
ISSN:1290-0729
1778-4166
DOI:10.1016/j.ijthermalsci.2014.02.010