International Journal for Research in Applied Science & Engineering Technology (IJRASET) ISSN: 2321-9653; IC Value: 45.98; SJ Impact Factor: 7.177 Volume 7 Issue XI, Nov 2019- Available at www.ijraset.com © IJRASET: All Rights are Reserved 555 Heat Transfer Enhancement of Phase Change Materials (PCM) in Thermal Storage Device Kuncha Sekhar Babu 1 , Vurity Sridhar Patnaik 2 , Ravindra Kante 3 , Uppada Ramakanth 4 1 M.Tech Student, JNTU, Kakinada 2, 3, 4 Department of Mechanical Engineering, JNTU Kakinada-A.U.C.E, Vizag Abstract: The analysis was performed on the PCM materials by varying outer radii of thermal energy system for paraffin wax material. The analysis was continue for various PCM materials to estimate the melting time of the PCM materials for this problem Examine the melting time of PCM material n-Eicosane wax and increasing radius of pipe in PCM system. The melting time was decreased for Outer radius of Pipe varying from 0.022 m and 0.028m but the melting time was increased for Outer radius of Pipe 0.03m. It was clearly show that the melting time was decreased from 1187 seconds to 1152 seconds with respect to the radius of pipe. At the radius of 0.03m of pipe the melting temperature found that 1177seconds i.e. the time duration was again increased. The melting temperature of the PCM materials and the duration of melting time. The highest melting time (6127 sec) of PCM material is NH4 Al (SO4)2_12H2O liquid and lowest melting time (915sec) of PCM material is CaCl2_6H2O for selected PCM materials from this study. Keywords: PCM, heat transfer, FEM, specific heat, fixed mesh, ANSYS I. INTRODUCTION TO PHASE CHANGE MATERIALS AND METHODOLOGY Numerical techniques, such as finite element method, are commonly utilized to solve phase change heat transfer problems. For modelling phase change problems, there are two main approaches: moving-mesh and fixed-mesh methods. The mesh of the moving- mesh method is allowed to change to track the solid/liquid interface. This method is rarely used in practice because it will highly complicate the computations. The fixed-mesh method is commonly used for modelling phase change. Heat transfer analysis in thermal sorage system was performed by considering the different phase change materials (PCM) like CaCl2_6H2O, Mg (NO3) _6H2O, NH4 Al (SO4)2_12H2O liquid, MgCl2_6H2O and Polyethylene Glycol. In this work found the melted temperature time of these materials and temperature history at centre of the location of the phase change materials. II. LITERATURE SURVEY Kamal Abdel Kader Ismail, Carlos L. Wolf [1] The heat exchanger generally considered in the storage of thermal energy for phase change is the type of casing and tube, where the phase change material (PCM) fills the side of the casing of the exchanger while the heat transfer fluid (RTF) flows through the pipes and transfers energy to and from the storage unit. Ning Xie , Zhaowen Huang , Zigeng Luo [2] Using phase change materials (PCMs) for thermal energy storage has always been a hot topic within the research community due to their excellent performance on energy conservation such as energy efficiency in buildings, solar domestic hot water systems, textile industry, biomedical and food agroindustry. Esam M. Alawadhi [3] This book focuses on the use of ANSYS in solving practical engineering problems. ANSYS is extensively used in the design cycle by industry leaders in the United States and around the world. Additionally, ANSYS is available in computer laboratories in most renowned universities and institutes around the world. Courses such as computer aided design (CAD), modeling and simulation, and core design all utilize ANSYS as a vehicle for performing modern engineering analyses. Senior students frequently incorporate ANSYS in their design projects. Graduate-level finite element courses also use ANSYS as a complement to the theoretical treatment of the finite element method. Idris Al Siyabi, Sourav Khanna, Tapas Mallick [4] A small-scale phase change material (PCM)-based heat sink can regulate the temperature of electronics due to high latent-heat capacity. Three different heat sinks are examined to study the effects of PCM combination, arrangement of PCMs in multiple-PCM heat sink, PCM thickness, melting temperature and intensity of heat source on the thermal behavior of heat sink. Randeep Singh , Sadegh Sadeghi and Bahman Shabani [5] Low thermal conductivity is the main drawback of phase change materials (PCMs) that is yet to be fully addressed. This paper studies several efficient, cost-effective, and easy-to-use Experimental techniques to enhance thermal conductivity of an organic phase change material Used for low-temperature thermal energy storage applications. In such applications, the challenges associated with low thermal conductivity of such organic PCMs are even more pronounced. In this investigation, polyethylene glycol (PEG-1000) is used as PCM. M. Alipanah and A.