Thermal Energy Storage using Paraffin Wax Phase Change Materials

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Thermal Energy Storage using Paraffin Wax Phase Change Materials ( thermal-energy-storage-using-paraffin-wax-phase-change-mater )

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ICTAMDMES'20 IOP Publishing IOP Conf. Series: Materials Science and Engineering 923 (2020) 012066 doi:10.1088/1757-899X/923/1/012066 2. Material Selection 2.1 TES Tank For both TES tank and spherical balls Stainless steel is selected because it has more corrosion resistance and high tensile strength. It also has higher degree of reusability. 2.2Paraffin Wax Paraffin wax has high heat trapping capacity and it is insoluble in water also it is not affected by any chemical reagents. Its Heat of combustion is 42MJ/Kg. Hence it is used a Phase Change Material in this process. 2.3 Geometry of Balls Paraffin wax is stored in a spherical shaped hollow ball. Spherical shape is chosen because it has more surfaces to volume ratio which permits uniform heat transfer between the bonds of paraffin wax. 2.4 Grade of Stainless Steel 2.5 Melting Point of Wax The paraffin wax having melting point in the range of 40-degree Celsius to 43 degree Celsius is selected for this process. 2.6 Thermocouples Six T -type thermocouple are used to obtain the temperature values. A channel for measuring inlet water temperature, a channel for measuring outlet water temperature and four channels for measuring the layer by layer temperature of paraffin wax are connected to get digital output. 3. Layout of Project High chromium ferritic grades (446) of stainless steel are used as TES tank material in this process. Austenitic grades of stainless steel have high strength at elevated temperatures. Fig. 2. Tes Tank Isometric View Fig. 1. Experimental Setup of Thermal Energy Storage 3

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