1 Basic thermodynamics of thermal energy storage
1 Basic thermodynamics of thermal energy storage In this chapter, different methods of thermal energy storage are first described with respect to their basic characteristics, and then
In this paper, the heat dissipation behavior of the thermal management system of the container energy storage system is investigated based on the fluid dynamics simulation method. The results of the effort show that poor airflow organization of the cooling air is a significant influencing factor leading to uneven internal cell temperatures.
By far the most common way of thermal energy storage is as sensible heat. As fig.1.2 shows, heat transferred to the storage medium leads to a temperature in-crease of the storage medium. A sensor can detect this temperature increase and the heat stored is thus called sensible heat. Fig. 1.2.
Fig. 1.3. Heat storage as latent heat for the case of solid-liquid phase change. If the melting is completed, further transfer of heat results again in sensible heat storage. The storage of the heat of melting cannot be detected from the tem-perature, because the melting proceeds at a constant temperature.
The storage of sensible heat uses movements of atoms and molecules and is de-scribed by the rule of Dulong-Petit for solids and for ideal gases. For liquids, the description is much more complex.
1 Basic thermodynamics of thermal energy storage In this chapter, different methods of thermal energy storage are first described with respect to their basic characteristics, and then
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