Quench Severity and Kinetics of Wetting of Vegetable Oil Blends and Nanofluids for Heat Treatment

V. Jagannath, K.N. Prabhu:
QUENCH SEVERITY AND KINETICS OF WETTING OF VEGETABLE OIL BLENDS AND NANOFLUIDS FOR HEAT TREATMENT
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New challenges in heat treatment and surface engineering – conference in honour of prof. Božidar Liščić (09 – 12 June 2009, Dubrovnik – Cavtat, Croatia)

ABSTRACT:
In the present work, investigation was carried out to study the suitability of vegetable oil blends with mineral oil and alumina based nanofluids as quench media for heat treatment. Palm oil, sunflower oil, gingili oil were blended with mineral oil in the ratio of 2:1, 3:1, 1:1, 1:2, and 1:3… Heat transfer coefficients were determined using a lumped heat capacitance model.  A dynamic contact angle analyzer was used for determination of dynamic and static contact angle of the droplet on the substrate. The wetting behaviuor of oils and their blends was modelled by a power law of the type:  θ = ktn. Wettability of nanofluids was found to poor.


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