Sensible heat storage

I) Sensible heat storage, with a fully mixed storage fluid. 

Dincer, I., S. Dost, and X. Li, 1997. Performance analyses of sensible heat storage systems for thermal applications, Int. J. Energy Res., 21, 1157-1171. 

This temperature increase can be detected by a sensor and the heat stored is thus called sensible heat. Sensible heat storage in most cases uses as storage materials solids (stone, brick,...) or liquids (water,...). Gasses have... 

For the sensible heat storage using water, water should not be mixed during operations, because temperature difference must be maintained for sensible storage. To keep water temperature separate, multi-connected tanks and a stratified water tank are used. 

The method of latent heat storage based on liquid-solid phase transition is available to make smaller the volume of heat storage tank, because of its higher thermal density than that of sensible heat storage. Therefore, a substance which has a large amount of latent heat of fusion is more profitable as a heat storage material. 

Sensible Heat Storage - A heat storage system that uses a heat storage medium, and where the additional or removal of heat results in a change in temperature. 

Sensible heat storage of high capacity calls for water as the working medium (indirect heating system). Accordingly, the coUectors are more expensive, and the application of a water-air heat exchanger also involves further cost (see Section 14.5.2). 

A general problem with PCM stores is the fabrication of an inexpensive casing resistant to corrosion. For some PCMs, degradation has been experienced over the course of repeated cycling. The choice between phase change and sensible heat storage must be made on economic grounds. 

There is an obvious temperature change during the heat-absorbing and release process of sensible heat-storage materials. Water, steel and stone are widely used sensible heat-storage materials. Water is the cheapest, most useful sensible heat-storage materials in the temperature interval from 1 °C to 99 °C at 1 standard atmosphere. The absorbing heat content of water for a 1 °C rise in temperature is 4.18 J/g. 

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