Thermal properties of liquids used in the automobile industry such as engine oil, antifreeze, and a liquid for windshield wipers were obtained using the photopyroelectric (PPE) technique. The inverse PPE configuration was used in order to obtain the thermal effusivity of the liquid samples. The theoretical equation for the PPE signal in this configuration, as a function of the incident light modulation frequency, was fitted to the experimental data in order to obtain the thermal effusivity of these samples. Also, the back PPE configuration was used to obtain the thermal diffusivity of these liquids; this thermal parameter was obtained by fitting the theoretical equation for this configuration, as a function of the sample thickness (called the thermal wave resonator cavity), to the experimental data. All measurements were done at room temperature. A complete thermal characterization of these liquids used in the automobile industry was achieved by the relationship between the obtained thermal diffusivities and thermal effusivities with their thermal conductivities and volumetric heat capacities. The obtained results are compared with the thermal properties of similar liquids.


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    Titel :

    Thermal characterization, using the photopyroelectric technique, of liquids used in the automobile industry




    Erscheinungsdatum :

    2012


    Format / Umfang :

    8 Seiten, 4 Bilder, 1 Tabelle, 9 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Some terms used in automobile industry

    Ostwald, W. | Engineering Index Backfile | 1939


    Corrosion Standards Used in the Automobile Industry

    Haynes, G. / NACE; Task Group T-14A on Automotive Corrosion | British Library Conference Proceedings | 1992


    Automobile industry

    Holmes, P. / Smith, A. | British Library Conference Proceedings | 1995