Thermal storage system and power generation system including the same
A heat storage system and power generation system technology, applied in the field of power generation systems and heat storage systems, can solve the problems of small heat capacity of heat medium and insufficient use of solar heat
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no. 1 approach
[0029] The heat storage system of this embodiment stores solar heat. Furthermore, the heat storage system of this embodiment is suitably located in a power generation system. Therefore, first, the present invention will be described by citing an integrated solar combined cycle (Integrated Solar Combined Cycle) power generation system as a power generation system as a specific example. The integrated solar combined cycle power generation system has a turbine (gas turbine) and a steam turbine, and uses these two turbines to generate electricity.
[0030]
[0031] Such as figure 1 As shown, the power generation system of the first embodiment includes a heat storage system 1 and an integrated solar energy combined cycle power generation system 100 (hereinafter simply referred to as “power generation system 100 ”) to which the heat storage system 1 is applied. Between the heat storage system 1 and the power generation system 100 , it flows through piping not shown, and heat med...
no. 2 approach
[0076] Next, refer to Figure 6 7 illustrates a heat storage system (heat storage system 2 ) of a second embodiment. exist Figure 6 In FIG. 7 and in FIG. 7 , the same reference numerals are attached to the same components as those in the first embodiment, and detailed description thereof will be omitted. Additionally, apply Figure 6 The power generation system 300 of the heat storage system 2 shown has the same structure as the power generation system 100 described above.
[0077] In the thermal storage system 2 , in addition to the stratified tanks 10 a to 10 c , a stratified tank 15 that does not contain a phase change medium is provided. That is, the stratification tank 15 (second heat storage tank) stores the heat medium itself which absorbed solar heat. The stratification box 15 is connected in parallel to the solar panel field 200 . Likewise, the stratified tanks are also connected in parallel to the stratified tanks 10a to 10c. In addition, the stratification ta...
no. 3 approach
[0083] Next, a heat storage system (heat storage system 3 ) according to a third embodiment will be described with reference to FIG. 8 . In FIG. 8 , the same components as those described in the above-described embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0084] In the thermal storage system 3 , as shown in FIG. 8( a ), four stratified tanks 10 a to 10 d and one stratified tank 15 are connected in parallel. In addition, 10 d of stratification tanks are the same as the above-mentioned stratification tanks 10a-10c. In addition, at the time of heat storage, the heat medium is circulated through the stratified tanks 10a to 10d to store heat in the same manner as in each of the above-described embodiments.
[0085] However, after heat storage, before heat release using the stratification tanks 10a-10d, predetermined control is performed. That is, discharge of the heat medium by the stratification tank 15 (using solar ...
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