Compare an SHS with a solid storage material and an LHS with a PCM storage material. The thermal capacity of energy storage system is a capacity of 600 kWh. The properties of storage media are density of the SHS medium is 2400 kg/m3 and its specific heat is 1 kJ/kg K, density of the PCM medium is 1808 kg/m3, fusion enthalpy is 212 kJ/kg, and its specific heat is 1.8 kJ/kg K. The storage medium temperature variation ΔT in the TES system is 60 K. Determine for both storage systems (a) the storage energy density and (b) the mass and volume of storage medium.

Compare an SHS with a solid storage material and an LHS with a PCM storage material. The thermal capacity of energy storage system is a capacity of 600 kWh. The properties of storage media are density of the SHS medium is 2400 kg/m3 and its specific heat is 1 kJ/kg K, density of the PCM medium is 1808 kg/m3, fusion enthalpy is 212 kJ/kg, and its specific heat is 1.8 kJ/kg K. The storage medium temperature variation ΔT in the TES system is 60 K. Determine for both storage systems (a) the storage energy density and (b) the mass and volume of storage medium.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.2P: 2.2 A small dam, which is idealized by a large slab 1.2 m thick, is to be completely poured in a...

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1.60 Two electric resistance heaters with a 20 cm length and a 2 cm diameter are inserted into a well-insulated 40-L tank of water that is initially at 300 K. If each heater dissipates 500 W, what is the time required for bringing the water temperature in the tank to 340 K? State your assumption for your analysis.
2.2 A small dam, which is idealized by a large slab 1.2 m thick, is to be completely poured in a short Period of time. The hydration of the concrete results in the equivalent of a distributed source of constant strength of 100 W/m3. If both dam surfaces are at 16°C, determine the maximum temperature to which the concrete will be subjected, assuming steady-state conditions. The thermal conductivity of the wet concrete can be taken as 0.84 W/m K.
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