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Energy storage system using dry ice sublimation

An energy storage system and dry ice technology, applied in the field of energy storage systems using dry ice sublimation, can solve the problems of low energy utilization, high energy, waste, etc., and achieve the effect of improving commercial application, work efficiency, and energy storage density.

Active Publication Date: 2022-03-18
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some current carbon dioxide energy storage systems have a lot of energy waste in the process of storing and releasing energy, the energy utilization rate is low, and the energy storage density needs to be further improved

Method used

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  • Energy storage system using dry ice sublimation

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with examples and accompanying drawings, but the protection scope of the present invention is not limited thereto.

[0027] see figure 1 , figure 1 It is a schematic diagram of the energy storage system using dry ice sublimation. The system of the present invention includes: a main motor 1, a dry ice maker 2, a dry ice storage tank 3, a pump 4, a Stirling engine cold end heat exchanger 5, a Stirling engine heat accumulator 6, and a Stirling engine hot end heat exchange 7, the first Stirling engine piston 8, the second Stirling engine piston 9, the first generator 10, the high-pressure carbon dioxide surge tank 11, the regenerative heater 12, the heater 13, the turbine 14, the second The generator 15, the first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105 and their connecting parts.

[0028] The system mainly consists of three subsystems: ...

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Abstract

The invention discloses an energy storage system utilizing dry ice sublimation. The energy storage system comprises a dry ice maker, a dry ice storage box, a Stirling engine energy release assembly, a high-pressure carbon dioxide energy release assembly and a pump. The high-pressure carbon dioxide energy release assembly comprises a high-pressure carbon dioxide surge tank, a regenerative heater, a heater and a turbine; an outlet of the dry ice maker communicates with a dry ice inlet of the dry ice storage box, and the dry ice storage box can flow to a Stirling engine cold end heat exchanger in the Stirling engine energy release assembly through a heat exchange medium in a spiral pipe bundle on the inner wall under the driving of a pump to convey cold energy. A carbon dioxide outlet of the dry ice storage box is communicated with an inlet of the high-pressure carbon dioxide surge tank, an outlet of the high-pressure carbon dioxide surge tank is sequentially connected with a regenerative heater cold end, a heater cold end and a turbine, a turbine outlet is connected with a regenerative heater hot end, and the regenerative heater hot end is connected with a carbon dioxide raw material inlet of the dry ice maker. The energy storage efficiency of the phase change carbon dioxide energy storage system can be improved, and commercial application of carbon dioxide trapping can be achieved.

Description

technical field [0001] The invention belongs to the technical field of physical energy storage, in particular to an energy storage system utilizing dry ice sublimation. Background technique [0002] Typical energy storage systems include pumped hydro storage, compressed air energy storage, flywheel energy storage, superconducting magnetic energy storage, battery energy storage, etc. Pumped storage is currently the most widely used and most mature large-scale energy storage technology. It has a large energy storage capacity, but it has certain requirements for geographical conditions. Therefore, the construction cost is high, the time is long, and it is easy to cause damage to the surrounding environment. Flywheel energy storage has problems such as small energy storage capacity and short continuous discharge time. Battery energy storage is very cost-effective and flexible in application. However, as the number of cycles increases, the core will age and its lifespan will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K13/00F01K7/00F01K13/02F01K21/00F01K25/10F02G1/043F02G1/053F02G1/055
CPCF01K13/00F01K21/00F01K25/103F01K13/02F01K7/00F02G1/043F02G1/053F02G1/055Y02P60/85
Inventor 谢永慧唐勃张荻孙磊
Owner XI AN JIAOTONG UNIV
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