A numerical and experimental investigation of different containers and PCM options for cold storage modular units for domestic applications

• Published in: International journal of heat and mass transfer Vol. 52; no. 19-20; pp. 4195 - 4202
• Main Authors: Ismail, K.A.R., Moraes, R.I.R.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.09.2009; Elsevier
• Subjects: Applied sciences; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Heat transfer; Latent heat storage; PCM; Recycled cans; Recycled water bottles; Solidification; Spherical capsules; Theoretical studies. Data and constants. Metering; Transport and storage of energy; Spherical capsules; PCM; Latent heat storage; Recycled cans; Recycled water bottles; Solidification; Domestic appliances; Numerical analysis; Cold; PCM material; Experimental study; Heat transfer; Energy storage
• ISSN: 0017-9310; 1879-2189
• DOI: 10.1016/j.ijheatmasstransfer.2009.04.031

This paper presents the results of an experimental and numerical study on the solidification of different phase change materials (PCM) encapsulated in spherical and cylindrical shells of different materials and diameters subject to constant surface temperature. The main objective is to determine the time for complete solidification of the PCM and how it is affected by the variations of the surface temperature, material and diameter of spherical shells. As a result of the study, it is expected to define a pair of container and PCM to operate adequately and efficiently together with refrigeration units. The experiments were realized using glass and plastic spherical shells of diameters 0.035, 0.076, 0.106 and 0.131m, soft drink cans and small plastic water bottles with surface temperatures of −5, −10, −12, −15, −18, −20 and −25°C. The phase change materials used are water and mixtures of water with 3.75%, 7.5%, 15%, 25%, 30%, 40% and 50% Glycol content. The results are presented and discussed.