GLOBAL PERFORMANCE OF A PROTOTYPE BRAZED PLATE HEAT EXCHANGER IN A LARGE REYNOLDS NUMBER RANGE

1995 ◽  
Vol 8 (4) ◽  
pp. 293-311 ◽  
Author(s):  
R. Bogaert ◽  
A. Böles
Keyword(s):  
Reynolds Number ◽  
Heat Exchanger ◽  
Plate Heat Exchanger ◽  
Large Reynolds Number ◽  
Number Range ◽  
Plate Heat ◽  
Reynolds Number Range ◽  
Global Performance ◽  
Brazed Plate Heat Exchanger

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.

Flow boiling of R32 inside a brazed plate heat exchanger

2016 ◽  
Vol 69 ◽  
pp. 165-174 ◽  
Author(s):  
Marco Rossato ◽  
Davide Del Col ◽  
Angelo Muzzolon ◽  
Luisa Rossetto
Keyword(s):  
Heat Exchanger ◽  
Flow Boiling ◽  
Plate Heat Exchanger ◽  
Plate Heat ◽  
Brazed Plate Heat Exchanger

Performance Study of a Dimpled-Protruded Air-to-Air Plate Heat Exchanger

2015 ◽  
Author(s):  
Amro M. Alqutub ◽  
Majid T. Linjawi ◽  
Ismail M. Alrawi
Keyword(s):  
Reynolds Number ◽  
Heat Exchanger ◽  
Flow Direction ◽  
Plate Heat Exchanger ◽  
Performance Study ◽  
Maximum Heat ◽  
Plate Heat ◽  
Structural Support ◽  
Two Fluids ◽  
Aluminum Plates

In the present study, the overall heat transfer coefficient, friction factors, and effectiveness of a dimple-protrusion air-to-air counter-flow plate heat exchanger have been measured at low Reynolds number (500 < Re < 4,000). The heat exchanger consists of 4 channels per flow direction built using 1 mm aluminum plates. Dimples are specially arranged such that protrusions are opposed for applications that require structural support to withstand high pressure difference between the two fluids. A maximum heat enhancement level of 3.2 was obtained with a penalty of increased friction factor by 9 times which leads to a maximum performance factor of 1.5. The effectiveness obtained was found to be almost independent of Reynolds number on most tested Re. A detailed uncertainty analysis has been performed to determine the uncertainty in the results.

scholarly journals Modelling & Numerical Investigation of the Effectiveness of Plate Heat Exchanger for Cooling Engine Oil Using ANSYS CFX

2021 ◽  
Vol 39 (2) ◽  
pp. 653-658
Author(s):  
Abhishek Agarwal
Keyword(s):  
Reynolds Number ◽  
Heat Exchanger ◽  
Plate Heat Exchanger ◽  
Engine Oil ◽  
Complex Flows ◽  
Process Industries ◽  
Plate Heat ◽  
Ansys Cfx ◽  
Design Software ◽  
High Reynolds

Heat exchangers are used for various industrial application for transfer of enthalpy from hot fluid to cold. One of them is Plate Heat Exchanger which finds its application in evaporating systems. The compactness, high effectiveness and easy maintenance of Plate Heat Exchanger makes it best choice for process industries. The current research investigates the application of Plate Heat Exchanger in cooling of engine oil using techniques of Computational Fluid Dynamics for low, medium and high Reynolds number using ANSYS CFX software. The CAD model is developed using Creo design software and turbulence model used for analysis is RNG k-epsilon which gives good predictions for complex flows involving swirls. The CFD analysis is conducted for different values of Reynolds number. The temperature distribution, effectiveness and overall heat transfer coefficient is determined for different values of Reynolds number.

Experiments and Modeling of a Mesoscale Laminar Plate Heat Exchanger

1999 ◽  
Author(s):  
Seung-Ho Hong ◽  
Vanessa Kenning ◽  
Charles Call ◽  
Reza Shekarriz
Keyword(s):  
Boundary Condition ◽  
Reynolds Number ◽  
Heat Exchanger ◽  
Periodic Boundary Condition ◽  
Periodic Boundary ◽  
Single Layer ◽  
Plate Heat Exchanger ◽  
Plate Heat ◽  
Layer Arrangement ◽  
Air Stream

Abstract In this paper, the results of an experimental and computational study on the development of a plate heat exchanger are presented and discussed. We have evaluated the characteristics of a miniature counterflow plate heat exchanger (PHE) using air as the working fluid. Because of the small characteristic channel dimension (Dh ≤ 1.9mm) and specific application of interest, the Reynolds number produced ranged between 20 &lt; ReD &lt; 1500, well within the laminar flow regime. The mass flow rates of the two hot and cold streams were maintained the same. Two different configurations were tested and modeled. The first configuration was the single-layer condition where one cold air stream was adjacent to another hot air stream in a counter-flow arrangement. The second configuration was the interleaved channel arrangement where the different layers alternate between cold and hot streams. Experiments were performed on a series of heat exchangers made of aluminum and stainless steel. The channel dimensions were 1mm × 20mm × 75mm. Because the flow region consists of hydrodynamically developing and fully developed flow for the range of Reynolds numbers tested, the experimental results show higher pressure drop compared with the results of fully developed parallel-plate channel flow and this difference increases with increasing Reynolds number. The dependency of Nusselt number on Reynolds number in the periodic boundary condition was larger than the single-layer arrangement. Further, the periodic boundary condition generates higher effectiveness than the single-layer arrangement. It was found that when using aluminum plates instead of stainless steel, axial conduction results in nearly 35% reduction in the overall heat transfer coefficient between hot- and cold-side channels. Computational results, corroborated with experimental data, suggested the use of an interleaved channel geometry for obtaining an effectiveness of 90% or higher when operating within the low mass flow rate regime.

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