Experimental and numerical investigation of thermal-hydraulic performance of supercritical nitrogen in airfoil fin printed circuit heat exchanger

2020 ◽  
Vol 168 ◽  
pp. 114829 ◽  
Author(s):  
Zhongchao Zhao ◽  
Yong Zhang ◽  
Xudong Chen ◽  
Xiaolong Ma ◽  
Shan Yang ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Numerical Investigation ◽  
Hydraulic Performance ◽  
Printed Circuit

scholarly journals Numerical Investigation of Thermal Hydraulic Performance of Printed Circuit Heat Exchanger of Periodic Diamond Channel Shape

2022 ◽  
Vol 961 (1) ◽  
pp. 012010
Author(s):  
Ali M Aljelawy ◽  
Amer M Aldabbagh ◽  
Falah F Hatem
Keyword(s):  
Reynolds Number ◽  
Heat Exchanger ◽  
Numerical Investigation ◽  
Hydraulic Performance ◽  
Operating Conditions ◽  
Design Parameters ◽  
Working Fluid ◽  
Channel Design ◽  
Printed Circuit ◽  
Pitch Length

Abstract One of the most recently important heat exchangers is the Printed circuit heat exchanger especially in the nuclear power plant and aerospace applications due to its very compact geometry and small print foot. This paper presents a 3D numerical investigation on the thermo-hydraulic performance of PCHE with new non-uniform channel design configuration. The new channel design is a rectangular cross section with repeated converging diverging sections or periodic diamond shape. The influence of three design parameters on the heat exchanger performance was studied and optimized, pitch length (p), length ratio (β) and the converging diverging angle (α). The computational models investigated in this study based on the operating conditions of the intermediate heat exchanger of very high temperature gas cooled reactor with helium as the working fluid under operating pressure of 3Mpa and inlet temperature of 800 K. The Reynolds number varied from 200 to 2000. Different Pitch lengths were used (1.59, 3.18, 6.36, and 12.73) mm, and different C-D angle (0, 4.5, 6, 7.5, 9, 10.5 and 12) and also different length ratios were used (0.2, 0.25 and 0.333). Three performance parameters were studied the Nusselt number, friction factor and the overall performance evaluation factor. Results show that the thermal performance enhanced with decreasing the pitch length and with increasing C-D angle and it was shown that this enhancement was found only at high Reynolds number above 1400. The best performance obtained at p=3.18, α=6 and β=0.25 based on the overall evaluation performance.

Effect of fin-endwall fillet on thermal hydraulic performance of airfoil printed circuit heat exchanger

2015 ◽  
Vol 89 ◽  
pp. 1087-1095 ◽  
Author(s):  
Ting Ma ◽  
Fei Xin ◽  
Lei Li ◽  
Xiang-yang Xu ◽  
Yi-tung Chen ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Hydraulic Performance ◽  
Printed Circuit
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