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Heat Transfer to Non-Aqueous Engine Coolants
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English
Abstract
Measurements are reported of heat transfer to a number of non-aqueous liquids that may be used as high temperature engine coolants. Included are engine lubricating oil, propylene glycol and LP 1693. The measurements were made with the coolants flowing at velocities ranging from 0.5-5 m/s in ducts similar in geometry to those employed in cylinder-heads and engine blocks. Heat fluxes up to 100 W/cm2 were used. For most tests the pressure drop across the test section was held constant but a number of tests are reported for constant coolant flowrate.
The heat-transfer data obtained are shown to be in good agreement with predictions from the Chen correlation for flow-forced, sub-cooled nucleate boiling. This model is used to evaluate the heat-transfer performance of other non-aqueous coolants, namely ‘Thermex’ and ethylene glycol.
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Citation
Boyle, R., Finlay, I., Biddulph, T., and Marshall, R., "Heat Transfer to Non-Aqueous Engine Coolants," SAE Technical Paper 910304, 1991, https://doi.org/10.4271/910304.Also In
References
- TOVELL, J. F. The Reduction of Heat Losses to the Diesel Engine Cooling System SAE Paper 830316
- WILLUMEIT, H. P. et al. New Temperature Control Criteria for more Efficient Gasoline Engines SAE Paper 841292
- ELSBETT, L. BEHRENS, M. Elko's Light Duty DI Diesel Engines with Heat Insulated Combustion System and Component Design SAE Paper 810478
- FINLAY, I. C. et al. The Application of Precision Cooling to the Cylinder Head of a Small Automotive Petrol Engine SAE Paper 880263
- DANNO, Y. KAMADA, H. KITADA, T. Efficacy and Feasibility of Cylinder Block Oil Cooling for Passenger Car Engines JSAE Review 1989 10 4 36 43
- FINLAY, I. C. et al. The Influence of Coolant Temperature on the Performance of a Four Cylinder 1100 cc Engine Employing a Dual Circuit Cooling System Spalding, D. B. Afgan, N. H. Heat and Mass Transfer in Gasoline and Diesel Engines Proceedings of the International Centre for Heat and Mass Transfer New York Hemisphere Publishing Corporation 1989 423 431
- KOBAYASHI, H. YOSHIMURA, K. HIRAYAMA, T. A Study on Dual Circuit Cooling for Higher Compression Ratio SAE Paper 841294
- CHEN, J. C. A Correlation for Boiling Heat Transfer to Saturated Fluids in Convective Flow Ind. & Engng Chem - Process Des. and Dev. 1966 5 3 322 329
- FINLAY, I. C. et al. Nucleate and Film Boiling of Engine Coolants Flowing in a Uniformly Heated Duct of Small Cross Section SAE Paper 870032
- FRENCH, C. C. J. ATKINS, K. A. Thermal Loading of a Petrol Engine Proc. Instn Mech. Engrs 1973 187 49 561 573
- COLLIER, J. G. Convective Boiling and Condensation McGraw-Hill London 1972 211 214