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sources. Apart from chemically-stored thermal energy, there are two thermal energy storage methods. Sensible heat storage (SHS) is based on the principle of storing energy by increasing the temperature of the storage material. Water and rock are common materials that have been used for this purpose for centuries (Huggins, 2010). The other method that makes use of the phase change of the storage materials is latent heat storage (LHS). A significant amount of energy is released or absorbed when phase change (solid-liquid, liquid-gas) takes place at a constant temperature. LHS has a few advantages over SHS such as higher energy density and regulatory features by preventing temperature fluctuations, particularly in domestic hot water applications (Mehling & Cabeza, 2007; Barreneche et al., 2015). Latent heat storage materials are called phase change materials (PCMs). PCMs are divided into two main categories: organic and inorganic PCMs. Organic PCMs consist of paraffin compounds (alkanes) and fatty acids. The availability at moderate temperatures (0-100 °C) makes organic PCMs the best candidate for the thermal management of electronic devices, residential air conditioning and domestic hot water applications (Fleischer, 2015; Sharma et al., 2009). Organic PCMs have many desirable features including low cost, chemical stability and non-toxicity. Moderately high heat of fusion and minor super-cooling are other favorable properties that have drawn a lot of attention to the use of organic PCMs in cyclic thermal storage applications (Pelichowska & Pielichowski, 2014). That said, there is one drawback that affects the performance of storage efficiency during charging and discharging: the low thermal conductivity of these PCMs (0.15-0.3 W/m·K) (Dincer & Rosen, 2002; Farid et al., 2004). Inorganic PCMs, however, have higher thermal conductivity (0.6- 0.7 W/m·K) and include mostly salt hydrates. Salt hydrates tend to melt 2PDF Image | THERMAL ENERGY STORAGE USING PARAFFIN WAX
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Turbine and System Plans CAD CAM: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. More Info
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Sand Battery Sand and Paraffin for TES Thermo Energy Storage More Info
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