scholarly journals Study Regarding Numerical Simulation of Counter Flow Plate Heat Exchanger

10.5772/24113 ◽  
2011 ◽  
Author(s):  
Grigore Roxana ◽  
Popa Sorin ◽  
Hazi Aneta ◽  
Hazi Gheorghe
Keyword(s):  
Numerical Simulation ◽  
Heat Exchanger ◽  
Plate Heat Exchanger ◽  
Counter Flow ◽  
Plate Heat

Investigation of heat transfer and pressure drop of a counter flow corrugated plate heat exchanger using MWCNT based nanofluids

2015 ◽  
Vol 66 ◽  
pp. 172-179 ◽  
Author(s):  
Marjan Goodarzi ◽  
Ahmad Amiri ◽  
Mohammad Shahab Goodarzi ◽  
Mohammad Reza Safaei ◽  
Arash Karimipour ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Plate Heat Exchanger ◽  
Counter Flow ◽  
Plate Heat

Visualization of FC-72 Flow Boiling in Parallel- and Counter-Flow Plate Heat Exchangers

2014 ◽  
Author(s):  
Kohei Koyama ◽  
Yuya Nakamura ◽  
Hirofumi Arima
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Flow Pattern ◽  
Void Fraction ◽  
Flow Boiling ◽  
Plate Heat Exchanger ◽  
Parallel Flow ◽  
Working Fluid ◽  
Counter Flow ◽  
Plate Heat

This study investigates FC-72 (Perfluorohexane) flow boiling in a plate heat exchanger. A plate heat exchanger which has a transparent cover plate is manufactured to visualize boiling two-phase flow pattern of the working fluid FC-72 heated by hot water. Titanium is used for heat transfer plate, which has micro pin-fin structure on the heat transfer surface to enhance heat transfer. Experiment is conducted for parallel- and counter-flow arrangements to compare thermal and hydraulic performances. Flow boiling is photographed by a digital camera and instantaneous images are processed to classify flow pattern and to measure void fraction in the heat exchanger. Flow rates and temperatures of FC-72 and hot water at inlet and outlet of the heat exchanger are simultaneously measured to obtain overall heat transfer coefficient. Two-phase flow pattern of FC-72 flow boiling and void fraction along flow direction as well as thermal performance are discussed. Experimental results show that bubbly flow, slug flow, and churn flow are observed for the experimental range of this study. Extent of churn flow in the parallel-flow heat exchanger is larger than that of the counter-flow one due to generated bubbles at upstream region in working fluid channel. Void fraction of the parallel-flow plate heat exchanger increases rapidly compared with that of the counter-flow one due to location of onset of nucleate boiling. Overall heat transfer coefficients for the parallel-flow arrangement is larger than that of the counter-flow due to destruction of thermal boundary layer. The experimental results show that flow arrangement of a plate heat exchanger has the potential to improve its thermal performance.

A New Approach to Numerical Simulation of Small Sized Plate Heat Exchangers With Chevron Plates

2006 ◽  
Vol 129 (3) ◽  
pp. 291-297 ◽  
Author(s):  
Sanjeev Jain ◽  
Aniruddha Joshi ◽  
P. K. Bansal
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Plate Heat Exchanger ◽  
Working Fluid ◽  
Computational Domain ◽  
Counter Flow ◽  
Number Range ◽  
New Approach ◽  
Plate Heat ◽  
Thermal Boundary Conditions

A numerical and experimental study of heat transfer and fluid flow in a single pass counter flow plate heat exchanger with chevron plates has been presented in this paper. CFD analysis of small sized plate heat exchanger was carried out by taking the complete geometry of the heat transfer surface and more realistic hydrodynamic and thermal boundary conditions. A cold channel with two chevron plates and two halves of hot channels on either side having flat periodic boundaries was selected as the computational domain. The numerical model was validated with data from experiments and empirical correlations from literature. Heat transfer and pressure drop data were obtained experimentally with water as the working fluid, in the Reynolds number range 400–1300 and the Prandtl number range 4.4–6.3.

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