scholarly journals Experimental and Numerical Study on Hydraulic Performance of Chevron Brazed Plate Heat Exchanger at Low Reynolds Number

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1076
Author(s):  
Yi Zhong ◽  
Kai Deng ◽  
Shenglang Zhao ◽  
Jinlin Hu ◽  
Yingjie Zhong ◽  
...  
Keyword(s):  
Reynolds Number ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Power Law ◽  
Numerical Study ◽  
Structural Parameters ◽  
Hydraulic Performance ◽  
Plate Heat Exchanger ◽  
Plate Heat ◽  
Brazed Plate Heat Exchanger

Few experiments have been performed to investigate the hydraulic performance in a chevron brazed plate heat exchanger (BPHE) with the narrow channel at lower Reynolds number. The hydraulic characteristics of seven types of chevron BPHEs were investigated experimentally and numerical simulation revealed the effects of structural parameters on hydraulic performances. The correlations between friction factor f and Re were fitted out based on more than 500 sets of pressure drop data. The research results show that there is a power-law between f and Re; which has a similar trend but a different amplitude for different plates, and the exponent of the power-law could be approximate to a constant. Numerical results show that the pressure drop Δp is positively correlated with the corrugated angle and spacing, however, negatively correlated with the corrugated height. Research on the hydraulic performance is significant for the optimal design of BPHE.

Optimization of Plate Heat Exchanger by Using Response Surface Method

2016 ◽  
Vol 852 ◽  
pp. 681-687 ◽  
Author(s):  
R. Pachaiyappan ◽  
S. Gopalakannan
Keyword(s):  
Reynolds Number ◽  
Nusselt Number ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Plate Heat Exchanger ◽  
Reference Surface ◽  
Design Constraints ◽  
Plate Heat ◽  
Surface Method ◽  
Optimal Values

This study deals the purpose of optimal values of the design constraints in a Plate Heat Exchanger by using Response Surface Method (RSM). The special effects of design constraints such as Reynolds number, flow velocity and pressure drop are examined. In the Reference Surface Method experimental design method, Nusselt number and friction factor are considered as performance parameters. The analysis of Reference Surface Method conducted with an optimization process to reach minimum pressure drop (friction factor) and maximum heat transfer (Nusselt number) for the designed Plate heat exchanger. Experimental results authorized the correctness of the planned method. Design expert 7.0 has been used for optimization process. Optimal values are selected from highest desirability value which is 0.80161 and design constrains has been optimized as 1600(Reynolds number), 0.04 m2 (Core area), 1.24 m (Core length).

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