Investigation of Heat-Transfer Process in Plate Heat Exchanger in Two Fluid-Flow Configurations

2012 ◽  
Vol 26 (3) ◽  
pp. 476-479
Author(s):  
H. Dardour ◽  
S. Mazouz ◽  
P. Cézac ◽  
J.-M. Renaume ◽  
A. Bellagi
2015 ◽  
Vol 55 (4) ◽  
pp. 267 ◽  
Author(s):  
Jan Skočilas ◽  
Ievgen Palaziuk

<p>This paper deals with a computational fluid dynamics (CFD) simulation of the heat transfer process during turbulent hot water flow between two chevron plates in a plate heat exchanger. A three-dimensional model with the simplified geometry of two cross-corrugated channels provided by chevron plates, taking into account the inlet and outlet ports, has been designed for the numerical study. The numerical model was based on the shear-stress transport (SST) <em>k-!</em> model. The basic characteristics of the heat exchanger, as values of heat transfer coefficient and pressure drop, have been investigated. A comparative analysis of analytical calculation results, based on experimental data obtained from literature, and of the results obtained by numerical simulation, has been carried out. The coefficients and the exponents in the design equations for the considered plates have been arranged by using simulation results. The influence on the main flow parameters of the corrugation inclination angle relative to the flow direction has been taken into account. An analysis of the temperature distribution across the plates has been carried out, and it has shown the presence of zones with higher heat losses and low fluid flow intensity.</p>


2011 ◽  
Vol 50 (8) ◽  
pp. 1492-1498 ◽  
Author(s):  
Iulian Gherasim ◽  
Matthew Taws ◽  
Nicolas Galanis ◽  
Cong Tam Nguyen

2020 ◽  
Vol 56 (12) ◽  
pp. 3261-3271
Author(s):  
Kitti Nilpueng ◽  
Lazarus Godson Asirvatham ◽  
Ahmet Selim Dalkılıç ◽  
Omid Mahian ◽  
Ho Seon Ahn ◽  
...  

2014 ◽  
Vol 85 ◽  
pp. 93-103 ◽  
Author(s):  
Arun Kumar Tiwari ◽  
Pradyumna Ghosh ◽  
Jahar Sarkar ◽  
Harshit Dahiya ◽  
Jigar Parekh

2011 ◽  
Vol 673 ◽  
pp. 35-39 ◽  
Author(s):  
Shuichi Torii

The aim of the present study is to improve heat transfer performance and to attenuate pressure drop in plate heat exchanger with the different plate shapes. In this study, the single plate model of the plate heat exchanger is made and the thermal fluid flow characteristics in the narrows channel are examined for two different shaped plates, i.e., separate herringbone and plover patterns and the results are compared with that of flat or herringbone plate. In addition, the flow of the fluid with the surface of the rugged plate in the plate heat exchanger was visualized by tuft method. It is found that if the separate herringbone plate whose pith is 2 is employed, heat transfer performance is substantially enhanced for the high Reynolds number region, while pressure drop is suppressed.


2017 ◽  
Vol 19 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Paulina Pianko-Oprych ◽  
Zdzisław Jaworski

Abstract The paper presents a Computational Fluid Dynamics (CFD) numerical study for a new design of a plate heat exchanger with two different flow patterns. The impact of geometric characteristics of the two studied geometries of exchanger plates on the intensification process of heat transfer was considered. The velocity, temperature and pressure distributions along the heat exchanger were examined. The CFD results were validated against experimental data and a good agreement was achieved. The results revealed that geometrical arrangement of the plates strongly influence the fluid flow. An increase in the Reynolds number led to lowering the friction factor value and increasing the pressure drop. The configuration II of the plate heat exchanger resulted in lower outlet hot fluid temperature in comparison with the configuration I, which means improvement of heat transfer.


Author(s):  
Wenjing Du ◽  
Fei Wang ◽  
Gongming Xin ◽  
Shihu Zhang ◽  
Lin Cheng

In conventional Plate Heat Exchangers (PHEs), a good heat transfer performance is usually obtained at the cost of much pumping power consumption. In order to address this dilemma, a novel Regular Hexagonal Plate Heat Exchanger (RHPHE) is proposed in this paper. Specially-shaped spherical ribs and quasi-spiral flow paths are designed on plates with the purpose of achieving a best trade-off between the heat transfer and fluid flow performance. Because of its regular hexagonal structure with 3 inlets and 3 outlets, three or at least two kinds of fluids with different temperatures can exchange heat in a single set of heat exchanger. It is an innovation that multiple fluids heat transfer in a PHE without the assistance of supplementary baffles. Numerical investigation is carried out on the RHPHE and water is the working fluid. The heat transfer and flow performance of the RHPHE in a series of working conditions are investigated. Results show that heat transfer coefficient per unit pressure drop of the RHPHE is much better than that of the widely accepted PHE with 60° chevron corrugations. Also studied is the influence of various combinations of inlet and outlet positions on heat transfer and fluid flow performance. For the thermodynamic analysis, the entropy generation caused by heat conduction under finite temperature difference and fluid friction is obtained numerically. The variation of the entropy generation number with respect to the Reynolds number is depicted, which provides reference for the future optimization design of the RHPHE.


Sign in / Sign up

Export Citation Format

Share Document