A comprehensive review on computational studies of falling film hydrodynamics and heat transfer on the horizontal tube and tube bundle

2021 ◽  
pp. 117869
Author(s):  
Chuang-Yao Zhao ◽  
Di Qi ◽  
Wen-Tao Ji ◽  
Pu-Hang Jin ◽  
Wen-Quan Tao
Keyword(s):  
Heat Transfer ◽  
Tube Bundle ◽  
Horizontal Tube ◽  
Computational Studies ◽  
Falling Film ◽  
Comprehensive Review

Numerical analysis on flow and heat transfer of a tube bundle in a horizontal-tube falling film evaporator

2014 ◽  
Vol 55 (12) ◽  
pp. 3336-3342 ◽  
Author(s):  
Luopeng Yang ◽  
Chengyong Gu ◽  
Zhexuan Xu ◽  
Xiaohong Zhang ◽  
Shengqiang Shen
Keyword(s):  
Heat Transfer ◽  
Numerical Analysis ◽  
Tube Bundle ◽  
Horizontal Tube ◽  
Falling Film ◽  
Film Evaporator ◽  
Flow And Heat Transfer

Measurement of Liquid Film Thickness around Horizontal Tube Bundle by Optical Technique for Optimizing Evaporator Design and Manufacturing

2014 ◽  
Vol 974 ◽  
pp. 220-224
Author(s):  
Karim Bourouni ◽  
Ali L. Taee
Keyword(s):  
Heat Transfer ◽  
Film Thickness ◽  
Liquid Film ◽  
Film Flow ◽  
Tube Bundle ◽  
Horizontal Tube ◽  
Falling Film ◽  
Optical Technique ◽  
Design And Manufacturing ◽  
Liquid Film Flow

This paper proposes the improvement of design and manufacturing of Falling Film Horizontal Tube Evaporators (FFHTE) through optimizing different parameters such as tubes pitch, tubes diameter and material and liquid film flow rate. These design and operational parameters have a significant influence on the hydrodynamic of the liquid film (eg: wetability of the tubes, scale deposition, heat transfer coefficient, etc.). Due to the complexity of the liquid film flow around the horizontal tube bundle, the experimental approach is preferred than modeling because it gives a better understanding of the phenomena occurring in the heat exchanger. In this paper one experiment was carried out to investigate liquid film flow around a single horizontal tube. A particular attention was taken for the measurement of liquid film thickness around the tube using a novel optical technique based on light reflection. The influence of the tubes pitch, tube diameter, height of the liquid distribution system and the liquid mass flow on the transitions between falling-film modes and film thickness is investigated and the results are compared to other data obtained from the literature. It was found that tubes wetability and heat transfer increased with increasing the vertical tube pitch. To account for fouling and heat transfer performance, a tube spacing value of 1.3 was recommended.

Thermal analysis of heat transfer performance in a horizontal tube bundle

2014 ◽  
Vol 54 (7) ◽  
pp. 1809-1818 ◽  
Author(s):  
Shengqiang Shen ◽  
Hua Liu ◽  
Luyuan Gong ◽  
Yong Yang ◽  
Rui Liu
Keyword(s):  
Heat Transfer ◽  
Thermal Analysis ◽  
Heat Transfer Performance ◽  
Tube Bundle ◽  
Horizontal Tube ◽  
Transfer Performance

Numerical Simulation of the Liquid Flowing and Heat-Transfer outside the Tube of the Horizontal-Tube Falling Film Evaporator

2012 ◽  
Vol 614-615 ◽  
pp. 296-300 ◽  
Author(s):  
Wei Kang Hu ◽  
Li Yang ◽  
Lei Hong Guo
Keyword(s):  
Heat Transfer ◽  
Horizontal Tube ◽  
Water Desalination ◽  
Falling Film ◽  
Transfer Enhancement ◽  
Film Evaporation ◽  
Film Evaporator ◽  
Spray Density ◽  
Performance Of Heat Transfer ◽  
Falling Film Evaporation

This paper mainly studies the falling film evaporator in the field of water desalination. Using the method of fluent simulates the process of the liquid flowing and heat-transfer on the horizontal-tube falling film evaporation. The author analyses the distribution of the liquid film, and obtain the rule that spray density, evaporation temperature, temperature difference and pipe diameter affect the performance of heat-transfer in a certain range. So the paper plays a guiding role in heat transfer enhancement in the falling film evaporator.

Sign in / Sign up

Export Citation Format

Share Document