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Equations for Physical Properties of Automotive Coolants
Technical Paper
2003-01-0532
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
1.0
During the warm up process of the coolant in automotive heater systems physical properties such as the density, dynamic viscosity, kinematic viscosity, specific heat and thermal conductivity vary with temperature. To conduct any heater analysis, therefore, it is essential that such variations with temperatures be evaluated. In the present paper a comprehensive literature search is conducted for the published physical properties of the automotive coolants ethylene glycol and propylene glycol. The data are analyzed and compared, and equations describing the variation of the above named physical properties with temperature are derived and presented. The effect of the temperature on the internal heat transfer coefficient is discussed. A comparison of the heat transfer performance between the two glycol coolants is presented. The temperature range studied extends from - 35 to at least 125 degree Celsius.
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Citation
Alshamani, K., "Equations for Physical Properties of Automotive Coolants," SAE Technical Paper 2003-01-0532, 2003, https://doi.org/10.4271/2003-01-0532.Also In
References
- American Society of Heating Refrigerating and Air Conditioning Engineers (ASHRAE) Fundamentals Handbook 18.1 18.10 Atlanta, GA 1981
- American Society of Heating Refrigerating and Air Conditioning Engineers (ASHRAE) Fundamentals Handbook 20.1 20.13 Atlanta, GA. 1997
- Suryanarayana N.V. “Engineering Heat Transfer” West Publishing Co. 1995