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Supercritical carbon dioxide thermodynamic cycle power generation system and its control method

A carbon dioxide, supercritical technology, applied in machines/engines, steam engines, mechanical equipment, etc., can solve problems such as low thermal cycle efficiency, achieve high cycle efficiency, improve cycle thermal efficiency, and be environmentally friendly.

Active Publication Date: 2022-04-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a supercritical carbon dioxide thermodynamic cycle power generation system and its control method, which are used to solve the technical problem of low thermal cycle efficiency in the energy-work conversion of multi-grade heat sources in the prior art

Method used

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  • Supercritical carbon dioxide thermodynamic cycle power generation system and its control method
  • Supercritical carbon dioxide thermodynamic cycle power generation system and its control method
  • Supercritical carbon dioxide thermodynamic cycle power generation system and its control method

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Embodiment 1

[0045] In order to solve the technical problem of low thermodynamic cycle efficiency in the prior art, an embodiment of the present invention provides a supercritical carbon dioxide thermodynamic cycle power generation system. Such as figure 2 As shown, it is a structural schematic diagram of an embodiment of the supercritical carbon dioxide thermodynamic cycle power generation system described in Embodiment 1 of the present disclosure. specific as figure 2 As shown, it includes motor equipment 1, supercritical carbon dioxide generalized Carnot cycle equipment 2, cooling liquid circulation equipment 3, and thermal fluid circulation equipment 4, wherein:

[0046] The motor device 1 includes a motor 12 and a generator 15 , and the generator 15 is connected to the rotating shaft of the motor 12 .

[0047] Preferably, the rotating shaft of the generator 15 and the motor 12 is connected through a coupling 13 .

[0048] Specifically, at the initial stage of start-up of the supe...

Embodiment 2

[0069] Based on the same inventive concept as that of Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a control method for a supercritical carbon dioxide thermodynamic cycle power generation system, which can be applied to a supercritical carbon dioxide thermodynamic power generation system described in Embodiment 1. Cycle power generation system, the same content will not be repeated. Such as Figure 4 As shown, it is a schematic flow chart of the supercritical carbon dioxide thermodynamic cycle power generation control method provided in Embodiment 2 of the present invention. The specific control method includes the following steps:

[0070] Step 1101: Start the motor to drive the scroll compressor and scroll expander to rotate coaxially;

[0071] Step 1102: the scroll compressor performs isothermal compression on the supercritical carbon dioxide working medium;

[0072] Step 1103: The endothermic side of the regenerator receives the ...

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Abstract

The invention discloses a supercritical carbon dioxide thermal power cycle power generation system and a control method thereof. supercritical carbon dioxide generalized Carnot cycle equipment including scroll compressors, scroll expanders, regenerators, high temperature heat exchangers and low temperature heat exchangers; cooling liquid circulation equipment including cooling towers and cooling liquid circulation pumps, providing The low temperature coolant exchanges heat with the supercritical carbon dioxide working medium to ensure the isothermal compression process of the scroll compressor; the thermal fluid circulation equipment includes a heat exchange fluid circulating heat exchanger and a heat transfer oil circulating pump, providing high temperature thermal fluid and supercritical carbon dioxide working. It ensures the isothermal expansion process of the scroll expander; provides a way to realize the generalized Carnot cycle of supercritical carbon dioxide, and effectively improves the thermal efficiency of the cycle.

Description

technical field [0001] The present disclosure relates to the technical field of thermodynamic process and thermodynamic cycle, in particular to a supercritical carbon dioxide thermodynamic cycle power generation system and a control method thereof. Background technique [0002] The global energy crisis and the deterioration of the ecological environment are intensifying, and the sustainable development of human society is facing severe challenges. Following the low-carbon economic development model of "low energy consumption, low pollution, low emission and high energy efficiency, high efficiency, and high benefit" is the only way to resolve the energy crisis and solve the problem of environmental pollution. In recent years, the use of clean energy such as solar energy, tidal energy, wind energy, and geothermal energy to generate electricity has attracted widespread attention. Distributed power generation and energy supply is one of the important technical ways to solve the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01K7/32F01K13/02F01K25/10
CPCF01K7/32F01K25/103F01K13/02
Inventor 宋盼盼吴鼎魏名山田冉郑思宇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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