Abstract—This study aimed to determine the effect of the mixing speed and pre-polymer dropping rate during synthesis of microencapsulated phase change materials (MEPCMs), and to assess the performance of MEPCM-incorporated paint as a latent heat storage (LHS) system. N-octadecane as phase change material was encapsulated with resorcinol-modified urea- melamine-formaldehyde at two different mixing speeds and four different pre-polymer dropping rates, and Fourier transform infrared (FTIR) spectroscopy was done to confirm success of microencapsulation. Scanning electron microscopy (SEM) revealed that increasing the homogenization speed and decreasing the pre-polymer dropping rate decreases the microcapsule size. Differential scanning calorimetry results showed that latent heat and encapsulation ratio increases with increasing mixing speed and decreasing pre-polymer dropping rate. The synthesized MEPCMs were incorporated into white paint at three different concentrations, and temperature profiling revealed that the paint’s temperature buffering capacity generally increases with increasing mixing speed, decreasing pre-polymer dropping rate and increasing MEPCM concentration.
Index Terms—Heat storage, MEPCM, phase change material, microencapsulation.
Terence P. Tumolva is with the Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City 1101 Philippines (e-mail: tptumolva@up.edu.ph).
Noel S. Sabarillo was with the Department of Chemical Engineering, University of the Philippines, Diliman, Quezon City 1101 Philippines. He is now with the Department of Chemical Engineering, University of Santo Tomas, España Boulevard, Manila 1015 Philippines (e-mail: noel.sabarillo@gmail.com).
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Cite: Terence P. Tumolva and Noel S. Sabarillo, "Characterization of MEPCM-Incorporated Paint as Latent Heat Storage System," International Journal of Chemical Engineering and Applications vol. 8, no. 3, pp. 203-209, 2017.
