scholarly journals Some aspects of plate number estimation of plate heat exchangers (PHEs). A case study

2021 ◽  
Vol 14 (1) ◽  
pp. 130-156
Author(s):  
A. Szép ◽  
Cs. D. András
Keyword(s):  
Heat Exchanger ◽  
Convective Heat Transfer Coefficient ◽  
Criterial Equation ◽  
Plate Heat ◽  
Property Estimation ◽  
Plate Number ◽  
Whole Milk ◽  
Plate Shape ◽  
Proper Estimation

Abstract For the proper estimation of the plate number (N) of a plate heat exchanger (PHE) – in addition to the flow rates and thermophysical properties of fluids –, an appropriate correlation is needed for convective heat transfer coefficient (α) calculation. When one does not have a criterial equation for the corresponding plate shape, we propose a selecting method for α. With the suggested relationships from literature, we calculate the plate number of a geometrically known, similar heat duty PHE and choose those relationships that give the same plate number with the known heat exchanger. In our case study, the plate number determined by any of the screened equations for whole milk preheating has almost the same value (n = 10 ± 1) regardless of the method used to solve the PHE model (plate efficiency and Nconverg or Kconverg convergence methods). For liquids’ thermophysical property estimation, we recommend averaging the values given by equations from literature, followed by equation fitting.

Development of a Computer Program for the Numerical Investigation of Heat Transfer in a Gasketed Plate Heat Exchanger

2010 ◽  
Author(s):  
Gizem Gulben ◽  
Selin Aradag ◽  
Nilay Sezer-Uzol ◽  
Ufuk Atamturk
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Computer Program ◽  
Working Conditions ◽  
Convective Heat Transfer Coefficient ◽  
Plate Heat Exchanger ◽  
Design Parameters ◽  
Outlet Temperature ◽  
Pressure Drops ◽  
Plate Heat

In this study, a computer program is developed to calculate characteristics of a Chevron type gasketed plate heat exchanger (CTGPHEX) such as: the number of plates, the effective surface area and total pressure drops. The main reason to prefer the use of CTGPHEXs to other various types of heat exchangers is that the heat transfer efficiency is much higher in comparison. Working conditions such as the flow rates and inlet and outlet temperature of both flow sides and plate design parameters are used as an input in the program. The Logarithmic Mean Temperature Method and the different correlations for convective heat transfer coefficient and Fanning factor that are found in the literature are applied to calculate the minimum necessary effective heat transfer area, the number of plate and pressure drops due to friction for both fluid sides of fulfill the desired heat transfer rate. This Turkish / English language optioned user friendly computer program is targeted to be used in domestic companies to design and select CTGPHEXs for any desired working conditions.

scholarly journals Test of the Layout of the Correction Circuit With a Plate Heat Exchanger

2021 ◽  
Vol 7 (1) ◽  
pp. 279-287
Author(s):  
Z. Guo ◽  
J. Shan ◽  
J. Li ◽  
A. Levtsev
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Heat Flow ◽  
Transfer Coefficient ◽  
Convective Heat Transfer ◽  
Convective Heat Transfer Coefficient ◽  
Plate Heat Exchanger ◽  
Enhanced Heat Transfer ◽  
Plate Heat

Pulse enhanced heat transfer technology is introduced, and a plate heat exchanger is designed. A pulsating valve is installed at the outlet of the heat exchanger to pulsate the heat medium. Pulsating and non-pulsating heat transfer tests are carried out on the same heat exchanger. On the basis of experiments, the effective temperature difference, heat flow and convective heat transfer coefficient of the heat exchanger at different pulse frequencies are analyzed by combining the theory of pulse enhanced heat transfer technology, heat transfer capacity, heat flow and convective heat transfer coefficient. Find the relationship between pulsation frequency of heat transfer effect of heat exchanger. The experimental results show that the heat exchanger has high heat transfer efficiency under the experimental conditions when there is pulsation.

G0601-2-3 High-performance plate heat exchanger by developing the plate shape

2009 ◽  
Vol 2009.3 (0) ◽  
pp. 15-16
Author(s):  
Keita IZUMI ◽  
Shuichi TORII ◽  
Yasushi KOITO ◽  
Toshio TOMIMURA
Keyword(s):  
Heat Exchanger ◽  
High Performance ◽  
Plate Heat Exchanger ◽  
Plate Heat ◽  
Plate Shape

Parametric Study of Heat Insulation in Case of Plate Heat Exchangers

2015 ◽  
Vol 775 ◽  
pp. 50-53
Author(s):  
Milan Kubín ◽  
Jiří Hirš
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
Heat Insulation ◽  
Plate Heat Exchanger ◽  
Heat Losses ◽  
Heat Energy ◽  
Plate Heat ◽  
Surrounding Environment ◽  
Parametric Case

Contribution is aimed on lost heat of plate heat exchangers to surrounding environment. Heat losses to vicinity are insignificant relative to transferred heat flow in the plate heat exchangers. This small part of the lost heat is demonstrated in parametric case study of plate heat exchanger, where is the lost part of heat energy lower than 0.50 % in ordinary cases.

Performance Investigation of a Plate Heat Exchanger Using Nanofluid with Different Chevron Angle

2013 ◽  
Vol 832 ◽  
pp. 254-259 ◽  
Author(s):  
M.M. Elias ◽  
Saidur Rahman ◽  
N.A. Rahim ◽  
M.R. Sohel ◽  
I.M. Mahbubul
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Transfer Coefficient ◽  
Convective Heat Transfer Coefficient ◽  
Plate Heat Exchanger ◽  
Pumping Power ◽  
Plate Heat ◽  
Analytical Work

Plate heat exchanger with chevron angle has higher heat transfer area than flat type and increases the level of turbulent due to its corrugated channel. In this study, both water and nanofluid were used to determine the heat transfer coefficient and rate, pumping power, and pressure drop. A commercial plate heat exchanger with two different symmetric (300/300,600/600) and one mixed (300/600) chevron angle plates were considered for analysis. Al2O3and SiO2nanoparticles with 0-1 vol. % concentration were used with water. From the analysis it was found that, convective heat transfer coefficient, heat transfer rate, pressure drop and pumping power increases with the increase of volume concentration. Moreover, the above parameters were found to be higher for 600/600chevron angle plates. A correlation of Nusselt number as a function of Reynolds number and Prandtl number for different chevron angles needs to be obtained based on experimental and analytical work. Nomenclature

OPTIMUM DESIGN OF GASKET PLATE HEAT EXCHANGER USING MULTIMODAL GENETIC ALGORITHM

2013 ◽  
Vol 44 (8) ◽  
pp. 761-789 ◽  
Author(s):  
Farzaneh Hajabdollahi ◽  
Zahra Hajabdollahi ◽  
Hassan Hajabdollahi
Keyword(s):  
Genetic Algorithm ◽  
Heat Exchanger ◽  
Optimum Design ◽  
Plate Heat Exchanger ◽  
Plate Heat
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