Comparison of the fluid flow and heat transfer in shell-and-tube heat exchangers with different baffles and tubes: simulation and experimental studies

2016 ◽  
Vol 11 (6) ◽  
pp. 1051-1059 ◽  
Author(s):  
Jiuyi Liu ◽  
Caifu Qian
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Heat Exchangers ◽  
Experimental Studies ◽  
Flow And Heat Transfer ◽  
Shell And Tube

Simulation of Shell-Side Performance of Novel Heat Exchanger

2012 ◽  
Vol 201-202 ◽  
pp. 107-110
Author(s):  
Xing Cao ◽  
Wen Jing Du ◽  
Lin Cheng
Keyword(s):  
Heat Transfer ◽  
Heat Exchangers ◽  
Heat Transfer Characteristics ◽  
Shell Side ◽  
Flow And Heat Transfer ◽  
Triangle Zone ◽  
Comprehensive Performance ◽  
Shell And Tube ◽  
Side Flow ◽  
Unit Pressure

Numerical simulation of shell-and-tube heat exchangers with novel helical baffles was carried out by using commercial codes to study shell-side flow and heat transfer characteristics. The results show that compared with shell-and-tube heat exchangers with conventional helical baffles, the ones with novel helical baffles can efficiently reduce the leakage from triangle zone so that the distributions of both the velocity field and heat transfer on tubes are more uniform. The comparison of comprehensive performance which is evaluated by heat transfer coefficient per unit pressure drop between conventional helical baffles and novel ones indicates that the latter performs better.

On the Presentation of Performance Data for Enhanced Tubes Used in Shell-and-Tube Heat Exchangers

1983 ◽  
Vol 105 (2) ◽  
pp. 358-365 ◽  
Author(s):  
W. J. Marner ◽  
A. E. Bergles ◽  
J. M. Chenoweth
Keyword(s):  
Heat Transfer ◽  
Pressure Drop ◽  
Heat Exchangers ◽  
Initial Step ◽  
Performance Data ◽  
Flow And Heat Transfer ◽  
Enhanced Tubes ◽  
Shell And Tube ◽  
Efficient Heat Transfer ◽  
The Many

As the efforts to produce more efficient heat transfer equipment continue, an increasing number of augmented surfaces are being produced commercially. Consequently, the designer faces an almost overwhelming task in comparing and evaluating the performance of various surfaces because of the many different ways in which the test data are currently presented in the literature. Thus, a uniform format for presenting pressure drop and heat transfer data for enhanced surfaces has become a necessity. This paper is concerned with one important aspect of this problem, namely, that of tubular enhanced surfaces used in shell-and-tube heat exchangers. As an initial step, the subject is limited to single-phase pressure drop and heat transfer; however, both tubeside and shellside flow are taken into consideration. A comprehensive list of commerical augmented tubes which may be considered for use in shell-and-tube exchangers is given, along with a survey of the performance data which are available in the literature. A standardized data format which uses the inside and outside envelope diameters as the basis for presenting the various geometrical, flow, and heat transfer parameters for all tubular enhanced surfaces is proposed and discussed.

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