Investigation of Forced Convective and Subcooled Flow Boiling Heat Transfer Coefficients of Water-Ethanol Mixture: Numerical Study
- 30 April 2021
- journal article
- research article
- Published by International Information and Engineering Technology Association in International Journal of Heat and Technology
- Vol. 39 (2), 512-520
- https://doi.org/10.18280/ijht.390221
Abstract
The subcooled flow boiling is related to the operation of electronic devices, Hybrid electric vehicle (HEV) Battery module and small catalytic reactors. It is well known that the operational temperature must be maintained to avoid any malfunction of these heat dissipative devices. In this paper the forced convective and subcooled flow boiling heat transfer coefficients of water-ethanol mixture is determined numerically by Volume of fluid analysis (VOF). The interaction between liquid and local vapour is analysed by solving the bubble volume of fraction in the numerical study. Crank Nicolson implicit scheme is used for discretizing the scalar convection equation for bubble void fraction and transforming into algebraic equation. Thomas Algorithm is used to solve the algebraic equations of bubble void fraction. The corrector predictor equation method is used to solve for bubble void fraction when the value obtained is less than 0 or exceeds 1. The thermodynamic and Thermophysical properties are substituted in the x-momentum and energy equation to determine the values of pressure drop, velocity and temperature of the fluid. From the temperature values, the subcooled flow boiling heat transfer coefficient is obtained. It is found that the addition of ethanol to water decreases the forced convective and subcooled flow boiling heat transfer coefficient of the water-ethanol mixture. The numerically determined heat transfer coefficient of water ethanol mixture is compared with that of the experimental results. The average deviation between the experimentally determined and numerically determined subcooled flow boiling heat transfer coefficient of water ethanol-mixture is found to be 24.13%.Keywords
This publication has 20 references indexed in Scilit:
- Bubble dynamics of water-ethanol mixture during subcooled flow boiling in a conventional channelApplied Thermal Engineering, 2017
- Numerical Analyses of Single-Phase Pressure Drop and Forced Convective Heat Transfer Coefficient of Water-Ethanol Mixture: An Application in Cooling of HEV Battery ModuleHeat Transfer, 2015
- Flow boiling heat transfer of HFO1234yf and HFC32 refrigerant mixtures in a smooth horizontal tube: Part II. Prediction methodInternational Journal of Heat and Mass Transfer, 2013
- Flow boiling heat transfer of HFO1234yf and R32 refrigerant mixtures in a smooth horizontal tube: Part I. Experimental investigationInternational Journal of Heat and Mass Transfer, 2012
- Boiling heat transfer and critical heat flux of ethanol–water mixtures flowing through a diverging microchannel with artificial cavitiesInternational Journal of Heat and Mass Transfer, 2012
- CFD Simulation of Boiling Flows Using the Volume-of-Fluid Method within OpenFOAMNumerical Heat Transfer, Part A: Applications, 2009
- Numerical simulation of film boiling on a sphere with a volume of fluid interface tracking methodInternational Journal of Heat and Mass Transfer, 2008
- Numerical Simulation of Subcooled Nucleate Boiling by Coupling Level-Set Method with Moving-Mesh MethodNumerical Heat Transfer, Part B: Fundamentals, 2007
- Comparison of volume-of-fluid methods for surface tension-dominant two-phase flowsInternational Journal of Heat and Mass Transfer, 2006
- A Coupled Level Set and Volume-of-Fluid Method for Computing 3D and Axisymmetric Incompressible Two-Phase FlowsJournal of Computational Physics, 2000