Abstract

Abstract:- Concentrating Solar Power (CSP) technologies use mirrors to concentrate (focus) the sun's light energy and convert it into heat to create steam to drive a turbine that generates electrical power. To avoid intermittence of power production, heat storage systems were introduced in which extra heat absorbed by heat transferred fluid will be stored in any heat storing materials. In heat storage systems different heat storing materials like ceramics and phase change materials (PCM ) are used. Heat Storage by using phase change materials is called Latent Heat storage The properties possessed by these heat storing materials are high heat capacity, high storing time. So, heat which stores in these materials can be transferred to working fluid at night time. The detailed comparison between sensible heat and latent heat storage in both encapsulated and non-encapsulated models are mentioned. We are Studying heat transfer capacity and heat storing capabilities of the phase change material (PCM), the solar salt (Eutectic mixture of 70 wt% of NaNO3 and 30 wt% KNO3) by conducting comparative study with simulation in ANSYS FLUENT on Sensible heat storage model (block model), Phase change model (PCM model) and Encapsulated phase change model (EPCM).Keywords: CSP, storage system, phase change material, encapsulate Phase change material.