Calculation method of heat generation of energy storage system
In this paper, the quantitative calculation model of heat transfer and energy storage (HTES) is established through the research on the energy storage characteristics of
Energy stored as sensible heat in different types of materials. Thermal energy can be stored as sensible heat in a material by raising its temperature. The heat or energy storage can be calculated as Heat is stored in 2 m3 granite by heating it from 20 oC to 40 oC. The denisty of granite is 2400 kg/m3 and the specific heat of granite is 790 J/kgoC.
The thermal heat energy stored in the granite can be calculated as q = (2 m3) (2400 kg/m3) (790 J/kgoC) ( (40 oC) - (20 oC)) = 75840 kJ qkWh= (75840 kJ) / (3600 s/h) =21 kWh The heat required to to heat 1 pound of water by 1 degree Fahrenheit when specific heat of water is 1.0 Btu/lboF can be calculated as q = (1 lb) (1.0 Btu/lboF) (1 oF) = 1 Btu
The containerized energy storage battery system comprises a container and air conditioning units. Within the container, there are two battery compartments and one control cabinet. Each battery compartment contains 2 clusters of battery racks, with each cluster consisting of 3 rows of battery racks.
Therefore, we analyzed the airflow organization and battery surface temperature distribution of a 1540 kWh containerized energy storage battery system using CFD simulation technology. Initially, we validated the feasibility of the simulation method by comparing experimental results with numerical ones.
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