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Liquid carbon dioxide energy storage system and method coupled with Kalina cycle

A technology of liquid carbon dioxide and Karina cycle, applied in the field of energy storage, can solve the problems of complex turbine exhaust liquefaction device, low energy density, and inability to store high-frequency fluctuations, so as to increase output power, improve utilization efficiency, The effect of increasing energy density

Pending Publication Date: 2021-03-26
QINGDAO UNIV OF SCI & TECH
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Problems solved by technology

However, the existing liquid carbon dioxide energy storage system has the disadvantages of being unable to store high-frequency fluctuating renewable energy, low energy density, and complicated turbine exhaust liquefaction devices.

Method used

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  • Liquid carbon dioxide energy storage system and method coupled with Kalina cycle

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Embodiment Construction

[0025] In order to make the purpose, technical effects and technical solutions of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments It is a part of the embodiment of the present invention. Based on the disclosed embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall all fall within the protection scope of the present invention.

[0026] see figure 1, a liquid carbon dioxide energy storage system coupled with a Karina cycle according to an embodiment of the present invention, including: a carbon dioxide turbine 1, a preheater 2, a Karina turbine 3, an ejector 4, a superheater 5, a regenerator 6, Ammonia water separator 7, ammonia water steam generator 8...

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Abstract

The invention discloses a liquid carbon dioxide energy storage system and method coupled with a Kalina cycle. The system can recover the waste heat of a heat storage medium, fully utilize the heat storage potential of the heat storage medium, reduce the corrosion of turbine blades in the Kalina cycle and reduce the dissipation of potential energy in an ammonia-poor solution in the Kalina cycle. The system is combined with an innovative Kalina cycle and solves the problems of corrosion of the turbine blades and potential energy waste of the ammonia-poor solution in a basic Kalina cycle. The high-temperature liquid carbon dioxide energy storage system is coupled with the Kalina cycle, the waste heat of the heat storage medium is safely and effectively utilized, and the energy utilization rate is increased. An electric heater is additionally arranged in front of a heat storage medium heat storage tank, so that the heat storage potential of the heat storage medium is fully utilized.

Description

technical field [0001] The invention belongs to the technical field of energy storage, and in particular relates to a liquid carbon dioxide energy storage system and method coupled with a Karina cycle. Background technique [0002] With the continuous development and progress of science and technology, energy has become the main factor restricting the development of human society. With the excessive consumption of fossil fuels such as coal and the environmental pollution caused by their use, the development and utilization of renewable energy has been paid more and more attention. However, renewable energy has the characteristics of high intermittency and randomness, and it is necessary to select a suitable energy storage system to achieve a stable output of renewable energy power generation. [0003] Liquid carbon dioxide energy storage is a new type of energy storage technology. The energy storage system uses carbon dioxide as a working medium. When storing energy, the el...

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Application Information

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IPC IPC(8): F01K25/10F01K23/02F01D15/08F28D20/00F25B9/00F25B9/06
CPCF01K25/103F01K25/106F01K23/02F01D15/08F28D20/0034F25B9/008F25B9/065Y02E60/14
Inventor 刘展刘旭孙文旭
Owner QINGDAO UNIV OF SCI & TECH
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