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Effect of Coolant Mixture Composition on Engine Heat Rejection Rate
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English
Abstract
The rate of heat rejection to the coolant system of an internal combustion engine depends upon coolant composition, among other factors, because this influences the coolant side heat transfer coefficient. The correlation developed by Taylor and Toong for heat transfer rate has been modified to account for this effect. The modification retains the gas-to-coolant passage thermal resistance implicit in the original correlation. The modified correlation gives predictions in agreement with experimental data. Compared to 100% water, mixtures of 50% ethylene glycol/50% water lower heat rejection rates by typically 5% and up to 25% in the extreme. This depends upon local conditions in the coolant circuit, which can give rise to different heat transfer regimes. Application of the modified correlation is outlined and illustrated.
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Citation
Shayler, P., Chick, J., and Ma, T., "Effect of Coolant Mixture Composition on Engine Heat Rejection Rate," SAE Technical Paper 960275, 1996, https://doi.org/10.4271/960275.Also In
References
- Taylor C.F. Toong T.Y. “Heat Transfer in Internal Combustion Engines” ASME Paper 57-HT-17 1957
- Kilmartin W.J. Dehm D.C. “Aqueous Propylene Glycol Engine Coolant for Automotive and Light Duty Applications” SAE Paper 930588 1993
- Hercamp R.D. Hudgens R.D. “Aqueous Propylene Glycol Coolant for Heavy Duty Engines” SAE Paper 900434 1990
- Greaney J.G. Brunner K. Coburn C.R. “Low Temperature Performance of Propylene Glycol Engine Coolants” SAE Paper 950463 1995
- Coughenour G.E. Goodman D.R. Brunett A.J. Ellis S.L. “High Temperature, High Load Performance of Propylene Glycol Engine Coolants in Modern Gasoline Engines” SAE Paper 950462 1995
- Gollin M. McAssey E.V. Stinson C. “Comparative Performance of Ethylene Glycol/Water and Propylene Glycol/Water Coolants in the Convective and Forced Flow Boiling Regimes” SAE Paper 950464 1995
- Alkidas A.C. “Effects of Operational Parameters on Structural Temperatures and Coolant Heat Rejection of a S.I. Engine” SAE Paper 931124 1993
- Finlay I.C. Boyle R.J. Pirault J.P. Biddulph T. “Nucleate and Film Boiling of Engine Coolants Flowing in a Uniformly Heated Duct of Small Cross Section” SAE Paper 870032 1987
- Boyle R.J. Finlay I.C. Biddulph T. Marshall R.A. “Heat Transfer to Non-Aqueous Engine Coolants” SAE Paper 910304 1991
- Finlay I.C. Harris D. Boam D.J. Parks B.I. “Factors Influencing Combustion Chamber Wall Temperatures in a Liquid-cooled, Automotive, Spark-ignition Engine” Proc Instn Mech Engrs London 199 D3 207 214 1985
- Chen J.C. “Correlation for Boiling Heat Transfer to Saturated Fluids in Convective Flow” I&EC Proc.Des. and Dev. 5 3 322 329 1963
- Campbell N.A.F. Charlton S.J. Wong L. “Designing Towards Nucleate Boiling in Combustion Engines” SAE VTMS Conf.Proc. 1995
- Shayler P.J. Christian S.J. Ma T. “A Model for the Investigation of Temperature, Heat Flow, and Friction Characteristics During Engine Warm up” SAE Paper 9311153 1993
- Forster H.K. Zuber N. “Dynamics of Vapour Bubbles and Boiling Heat Transfer” AIChE 1 4 531 535 1955
- Meisner S. Sorenson S.C. “Computer Simulation of Intake and Exhaust Manifold Flow and Heat Transfer” SAE Paer 860242 1986