Parametric Study on the Effect of the Addition of Ferric Oxide, Titanium Dioxide, Zinc Oxide and Copper Oxide on the Heat of Fusion and Thermal Conductivity of Myristic Acid
Author : Buenaventura, Darrel Boquiron
Major Adviser : Bautista, Ramer P.
Committee Members : Bambase, Manolito E. Jr.; Migo-Sumagang, Maria Victoria P.
Year : 2018
Month : June
Type : Thesis
Degree: BS
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Abstract
Myristic acid was used to determine the effect of adding metal oxides (CuO, Fe₂O₃, TiO₂, ZnO), amount added to myristic acid, and the initial temperature for logging in the determination of the thermal conductivity and latent heat of fusion using T-History method. The T-History method showed good accuracy as the thermophysical properties of pure myristic acid was calculated. The melting point calculated is equal to 53.39°C, the calculated thermal conductivity is 0.383 W per m²-K, and the calculated latent heat of fusion is 195673.5 J per kg. The effect of the initial temperature was determined to be statistically insignificant by using analysis of variance. After adding metal oxides at desired amounts (2% w/w, 8% w/w), it was found out that the time of phase change during atmospheric cooling decreased and at the same time thermal conductivity increased. However, latent heat of fusion decreased significantly. Copper oxide has the most significant effect on thermal conductivity, at 2% CuO by weight added and 8% by weight added, thermal conductivity of myristic acid are 0.408 W per m²-K and 0.440 W per m²-K, respectively.
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