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1 sie 2019 · Latent heat degradation in salt hydrates with thermal cycling. After 1000 thermal cycles, calcium chloride hexahydrate lost about 0.55%–2.4% of its energy storage capacity. In contrast, the energy storage density in sodium sulfate decahydrate and zinc nitrate hexahydrate degraded about 45% and 20%, respectively.
The table of specific heat capacities gives the volumetric heat capacity as well as the specific heat capacity of some substances and engineering materials, and (when applicable) the molar heat capacity.
Using phase change materials (PCMs) for latent heat storage, which can storage and release energy by melting and solidification, is becoming an effective way to solve the contradiction of supply and demand of energy, such as peak difference of power load and gap of solar energy [1, 2].
Substance (form) Enthalpy Δ f H (kJ): Gibbs Δ f G (kJ): Entropy (J/ K: Specific heat C P (J/K): Volume V(cm 3): Al (s) 0: 0: 28.33: 24.35: 9.99: Al 2 SiO 5 (kyanite)-2594.29-2443.88: 83.81: 121.71: 44.09: Al 2 SiO 5 (andalusite)-2590.27-2442.66
Specific Heat Capacity of Metals Table Chart. The specific heat is the amount of heat energy per unit mass required to raise the temperature by one degree Celsius. The relationship between heat and temperature change is usually expressed in the form shown below where c is the specific heat . Specific Heat Capacity Conversions:
10 lis 2021 · Salt hydrates show high values in latent heat, roughly (100-300) J/g and thermal conductivity (~0.7 W/mK, beyond twofold of paraffins and fatty acids) due to their excellent chemical properties.
1 lut 2016 · Table 1 presents thermophysical properties of the most studied salt hydrates cited by many researchers. As it can be seen in this Table, some thermal properties of pure substances are not known. The thermal properties of patented PCMs for latent heat storage and commercially produced heat storage products have not been investigated in detail.
