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Method and apparatus for heat storage

A heat storage and heat storage system technology, applied in heat storage equipment, lighting and heating equipment, indirect heat exchangers, etc., can solve the problems of increased cost and expensive

Pending Publication Date: 2021-04-13
海利亚克公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most solutions are expensive compared to the amount of energy stored, or have a limited number of operating cycles (charge-discharge), substantially increasing the cost of the stored energy compared to the direct use of energy

Method used

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  • Method and apparatus for heat storage
  • Method and apparatus for heat storage

Examples

Experimental program
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Effect test

Embodiment 1

[0163]A centralized solar power plant for transporting 350 ° C thermal oil is used as a heat source. The thermally conductive oil flows through the reversal heat exchanger, heats and evaporates a heat transfer fluid having a standard boiling point of 300 ° C. The internal pressure in the input / output system in the input / output system with a connecting tube with a connecting tube held at ambient temperature is less than 0.01 bar. The vapor pressure of the heat transfer oil at ambient temperature is usually about 10-5Ba, which leads to a very small amount of heat transfer liquid from the system while maintaining a lower residual air pressure. When the temperature of the heat storage container is low, the total pressure in the system is lower, equal to the vapor pressure of the heat transfer liquid plus residual air pressure. At this pressure, the heat transfer liquid will evaporate at a reduced temperature in the input system, thereby removing the relatively low return temperature...

Embodiment 2

[0166]A centralized solar power plant for transporting 350 ° C thermal oil is used as a heat source. The thermally conductive oil flows through the reversal flow heat exchanger, heated and evaporated from a linseed oil having a standard boiling point of 287 ° C. The internal pressure in the container and the connected input / output system is reduced to about 0.01 bar prior to improving the container by the vacuum pump with a connecting tube held at ambient temperature. The vapor pressure of flaxseed oil at ambient temperature is usually about 10-5Ba, which leads to a very small amount of heat transfer liquid from the system while maintaining a lower residual air pressure. When the temperature of the heat storage container is low, the total pressure in the system is lower, equal to the vapor pressure of the heat transfer liquid plus residual air pressure. At this pressure, the heat transfer liquid will evaporate at a temperature dropped in the input system, thereby removing the rela...

Embodiment 3

[0169]A centralized solar power plant for transporting 350 ° C thermal oil is used as a heat source. The thermally conductive oil flows through the reversal heat exchanger, the heat transfer fluid having a standard boiling point of 300 ° C, which is maintained at a pressure of 5 bar in the heat exchanger. In the heat exchanger, the heat transfer fluid is heated to 345 ° C at 5 bar, and thereafter it is injected into the container by the pressure reducing valve. The internal pressure in the container and the connected input / output system is maintained below 0.01 bar by using a vacuum pump with a connecting tube held at ambient temperature. When the overheated heat transfer fluid is injected, it is partially evaporated at the inlet of the container, and then condenses on the most cold portion of the container. To prevent environmental air from accumulating in the container (eg, through the small cracks or leakage joints in the housing), the vacuum pump will be continuously suction o...

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Abstract

A heat storage reservoir comprising: at least one input inlet for introduction of gaseous heat transfer fluid, or for introduction of superheated liquid heat transfer fluid, into the heat storage reservoir, and at least one liquid recovery system for recovery of liquid heat transfer fluid from the heat storage reservoir; and / or at least one gas outlet for recovery of gaseous heat transfer fluid from the heat storage reservoir, and at least one output inlet for introduction of liquid heat transfer fluid into the heat storage reservoir; and further comprising a volume of solid granular material, to which volume heat is transferred by means of a phase change from gas to liquid of a heat transfer fluid on contact of the heat transfer fluid with the solid granular material, and / or from which volume heat is transferred by means of a phase change from liquid to gas of a heat transfer fluid on contact of the heat transfer fluid with the solid granular material, which volume is in fluid connection with the at least one input inlet and the at least one liquid recovery system, and / or the at least one gas outlet and the at least one output inlet, and a pressure reduction system in fluid connection with the volume of solid granular material, characterized in that the pressure reduction system is arranged to reduce the gas pressure contribution arising from non-condensable species only.

Description

Technical field[0001]The present invention relates to a method for storing energy in a heat storage, a heat storage container, and a method for storing heat.Background technique[0002]Many energy production techniques, especially renewable resources such as wind energy and solar energy, pass energy through inconsistent with local energy consumption. Therefore, storage energy is used as an important aspect of energy infrastructure after preparation. Nowadays, there are many such techniques, such as chemical batteries and heat storage programs. However, most of the scheme is expensive than the amount of energy stored, or have a limited number of operation cycles (charge-release), which substantially increases the cost of the stored energy compared to the energy used. . Therefore, it will be advantageous to expand into a solution that stores a large amount of energy at low cost and has a large number of operation cycles.[0003]FR2981736 describes a heat storage system for storage, especi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/00F28D17/00F28D17/04F24H7/02
CPCF28D20/0056F28D17/005F28D17/04F24H7/02F24D2200/14Y02B10/20Y02E60/14
Inventor 亨里克·普拉诺夫
Owner 海利亚克公司