Study on A Cross Flow Type of Heat Exchanger : counter flow version with heat transfer enhancement

2004 ◽  
Vol 2004.14 (0) ◽  
pp. 331-334
Author(s):  
Kazuhiko SATO ◽  
Hiroshi KUROTANI ◽  
Himsar Ambarita ◽  
Jun SUZUKI ◽  
Norihiko KAMADA ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Cross Flow ◽  
Transfer Enhancement ◽  
Counter Flow ◽  
Flow Type

Heat transfer enhancement analysis of Al2O3 and MgO through counter flow in heat exchanger

2020 ◽  
Vol 33 ◽  
pp. 4412-4416
Author(s):  
T. Vignesh ◽  
K. Gurusami ◽  
A. Dhanalakshmi ◽  
A. Rajendra Prasad ◽  
G. Puthilibai ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement ◽  
Counter Flow

Effect of vibrator position and frequency on heat transfer enhancement in counter flow concentric pipe heat exchanger

2020 ◽  
Vol 17 (5) ◽  
pp. 751-760
Author(s):  
Shanmukh Sudhir Arasavelli ◽  
Ramakrishna Konijeti ◽  
Govinda Rao Budda
Keyword(s):  
Heat Transfer ◽  
Nusselt Number ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Hot Water ◽  
Transfer Enhancement ◽  
Counter Flow ◽  
Pipe Length ◽  
Content Type ◽  
Pipe Heat

Purpose This paper aims to deal with heat transfer enhancement because of transverse vibration on counter flow concentric pipe heat exchanger. Experiments were performed at different vibrator positions with varying amplitudes and frequencies. Design/methodology/approach Tests are carried out at 4 different vibration frequencies (20, 40, 60 and 100 Hz), 3 vibration amplitudes (23, 46 and 69 mm) and at 3 vibrator positions (1/4, 1/2 and 3/4 of pipe length) with respect to hot water inlet under turbulent flow condition. Findings Experimental results indicate that Nusselt number is enhanced to a maximum extent of 44% with vibration when compared to Nusselt number without vibration at a frequency of 40 Hz, an amplitude of 69 mm and at a vibrator position of one-fourth of pipe length with respect to hot water inlet. Originality/value Empirical correlation is developed from experimental data to estimate the heat transfer coefficient with vibration for experimental frequency range with an error estimate of approximately ±10%.

Research on Heat Transfer Enhancement of Shutter Baffle Heat Exchanger

2011 ◽  
Vol 236-238 ◽  
pp. 1607-1613 ◽  
Author(s):  
Xin Gu ◽  
Yong Qing Wang ◽  
Qi Wu Dong ◽  
Min Shan Liu
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Enhancement ◽  
Cross Flow ◽  
Processing Parameters ◽  
Transfer Enhancement ◽  
Shell Side ◽  
Tube Heat Exchanger ◽  
New Energy ◽  
Shell And Tube

A new concept of “Sideling Flow” in shell side of shell-and-tube heat exchanger is presented, which is relative to the cross flow, longitudinal flow and helical flow in heat exchanger. A type of new energy saving shell-and-tube heat exchanger with sideling flow in shell side, shutter baffle heat exchanger is invented, which exhibits the significant heat transfer enhancement and flow resistance reducement performance. The “Field Synergy Principle” is adopted to analyze the heat transfer enhancement mechanism of sideling flow, it is indicated that the shutter baffle heat exchanger exhibits the perfect cooperativity between velocity field and temperature grads field. Effects of the structure and processing parameters on the fluid flow and heat transfer are also investigated through numerical simulation, both the correlative equations of heat transfer coefficient and pressure drop in shell side are deduced, which provide references for the design and popularization of this new type heat exchanger.

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