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Energy storage device and method based on carbon dioxide gas-liquid phase change

A technology of carbon dioxide and energy storage devices, which is applied in steam engine devices, solar collectors in specific environments, refrigeration and liquefaction, etc., and can solve problems such as low energy utilization, waste, and excess energy

Active Publication Date: 2021-06-18
EXA ENERGY TECH (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of storing and releasing energy, some current carbon dioxide energy storage systems have a lot of energy waste, and the energy utilization rate is low.

Method used

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  • Energy storage device and method based on carbon dioxide gas-liquid phase change
  • Energy storage device and method based on carbon dioxide gas-liquid phase change
  • Energy storage device and method based on carbon dioxide gas-liquid phase change

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Embodiment Construction

[0045] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0046] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...

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Abstract

The invention relates to an energy storage device and method based on carbon dioxide gas-liquid phase change. The energy storage device based on carbon dioxide gas-liquid phase change comprises a gas store, a liquid storage tank, an energy storage assembly, an energy release assembly, a heat exchange assembly, and a heat recovery assembly, wherein the energy storage assembly is arranged between the gas store and the liquid storage tank, the carbon dioxide is changed from the gas state to the liquid state through the energy storage assembly, the energy release assembly is arranged between the gas store and the liquid storage tank, the carbon dioxide is changed into a gas state from a liquid state through the energy release assembly, the energy storage assembly and the energy release assembly are both connected with the heat exchange assembly, the heat exchange assembly can transfer part of energy generated in the energy storage assembly to the energy release assembly, at least one of the energy released when the carbon dioxide is changed into the liquid state from the gas state, the energy released when the carbon dioxide is cooled before entering the gas store and the energy released when a heat exchange medium is cooled can be recovered by the heat recovery assembly and is used for evaporation of the carbon dioxide. The energy storage device can reduce energy waste in the storage and release process and improve the energy utilization rate.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to an energy storage device and method based on gas-liquid phase transition of carbon dioxide. Background technique [0002] With the development of society and economy, people's demand for energy is getting higher and higher, but the increase in energy consumption has made environmental problems more serious, and non-renewable traditional energy sources such as coal and oil are increasingly exhausted, and new energy sources such as solar energy and wind energy are vigorously developed. To slow down the traditional energy consumption has become an inevitable choice. Due to the intermittent and fluctuating characteristics of new energy, direct grid connection will have a certain impact on the grid. At the same time, it is difficult to maintain consistency between the time when users use electric energy and the time when renewable energy generates electric energy. Therefore, t...

Claims

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Application Information

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IPC IPC(8): F28D20/02F25B9/00F25B39/00F25B41/31F24S20/40F01K25/10
CPCF28D20/021F25B9/008F25B39/00F24S20/40F01K25/103Y02E10/40Y02E60/14F28D20/02F28D20/028F25B25/005F25B2309/06F25B1/053F25B2339/047F25B2400/16F25B2400/24F25B40/02F25B11/04F25B2400/141F28D2020/0078F28D2020/0091
Inventor 谢永慧王秦孙磊王雨琦张荻郭永亮汪晓勇杨锋
Owner EXA ENERGY TECH (SHENZHEN) CO LTD
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