The higher use of conventional fossil fuel isresponsible for immense harm to surroundings, due to emanation of detrimentalgases and impurities in air that leads to recent global warming. These seriouschallenges encouraged engineers and scientists across the world to develop technologyin order to make use of renewable sources so as to prevent from environmentalhazards, high cost for energy production and avoid establishing new costlypower plants. The Thermal Energy Storage system is evolved so thatthe solar thermal energy can be stored during peak hours of sunlight and it canbe utilized during off- peak hours or during dark hours, Thermal energy storageis ineluctable for efficient use of renewable energy sources due to theirfragmentary nature, exclusively solar energy, which is the most eventual energysource. Thermal energy storage offers a vital role in order to bond the gapbetween energy supply and its demand, which in turn, improves the performanceand effectiveness of the energy systems.
TEScan be categorized into sensible heat storage, latent heat storage andthermo-chemical categories of heat storage systems. SHS is the most common methodfor storing thermal energy, e.g.
water is generally used to store heat in solarheating systems and in air based heating systems, respectively. However, LHSsystem is considered the most preferred technique for storing thermal energydue to their wide range of availability of materials with higher thermal storagedensity and almost isothermal operation. Therefore, an effective powerconsumption management can be achieved by using LHS system to store the thermalheat or coolness in off-peak loads hours and use it during peak loads hours.In Latent heat storage system energy is engrossed orreleased in order to change the phase of external fluid with the presence ofPhase Change Material (PCM).
The phase change can be carried out forsolid-solid, solid-liquid, solid-gas or liquid-gas. The transformation ofsolid-solid has small latent heat when compared with solid-liquid transitions,while solid-gas and liquid gas have high latent heat. PCMs exhibit certaindesirable thermal, kinetic, physical, chemical and economical properties. Why we use Paraffin Wax as a PCM?Paraffin wax is a white or colorless soft solidmaterial derived from petroleum, coal and other fuels having waxy consistency.
They have high molecular mass with long inline chains of hydrocarbons C31H64.There is a homogenous mixture of hydrocarbon molecules with various carbonnumbers having lower melting points and poorer latent heat than pure paraffin.Paraffin wax can be easily collaborated with LHS system due to its favorableproperties like noncorrosive in nature, safe to use, high effectiveness. .