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Heat pump and supercritical carbon dioxide brayton cycle coupled combined cooling and heating power supply system

A technology of combined cooling, heating and power supply and carbon dioxide, which is applied in heat pumps, steam generation methods using heat carriers, refrigerators, etc., can solve problems such as low energy utilization efficiency, unusable heat, and inability to obtain steam and cooling capacity. Achieve the effect of improving grade, increasing utilization efficiency and reducing usage

Inactive Publication Date: 2017-12-26
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main technical defect of the existing Brayton cycle is that it can only produce electric energy, but cannot obtain steam and cold energy, and the energy utilization efficiency is not high
The secondary technical defect is: it is impossible to use medium-temperature heat energy or heat with certain intermittent and fluctuating properties.

Method used

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  • Heat pump and supercritical carbon dioxide brayton cycle coupled combined cooling and heating power supply system
  • Heat pump and supercritical carbon dioxide brayton cycle coupled combined cooling and heating power supply system
  • Heat pump and supercritical carbon dioxide brayton cycle coupled combined cooling and heating power supply system

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] The first embodiment of the present invention provides a combined cooling, heating and power system in which a heat pump is coupled with a supercritical carbon dioxide Brayton cycle. figure 1 It is a structural schematic diagram of the combined cooling, heating and power system of the embodiment of the present invention, such as figure 1 As shown, the device includes a heating energy storage unit, a turbine, a regenerator, a waste heat unit, a cooler and a compressor.

[0029] The heating energy storage unit includes a heater 1 and an energy storage unit 2. The heater 1 heats a medium such as heat transfer oil, water vapor or molten salt, and the heated medium is transferred to the energy storage unit 2. The energy...

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Abstract

The invention discloses a heat pump and supercritical carbon dioxide brayton cycle coupled combined cooling and heating power supply system. The system comprises a heating energy storage unit, a turbine, a heat regenerator, a waste heat unit, a cooler and a compressor. The heating energy storage unit is used for storing energy and heating supercritical carbon dioxide. The turbine does work to generate electricity through heat of the heated supercritical carbon dioxide. The heated supercritical carbon dioxide is cooled through the heat regenerator and then goes into a heat pump unit to generate high-temperature steam. The supercritical carbon dioxide is cooled through the heat pump unit, goes into a refrigerating unit to form cold water, then is cooled through the cooler, compressed through the compressor and heated through the heat regenerator and returns to the heating energy storage unit again to complete one circulation.

Description

technical field [0001] The invention relates to a combined cooling, heating and power system that utilizes medium-high temperature heat energy to simultaneously obtain electric energy, steam and cooling capacity, and more particularly relates to a combined cooling, heating and power system that couples a heat pump and a supercritical carbon dioxide Brayton cycle. Background technique [0002] Energy is an important basis for the development of the national economy, and the use of fossil resources, solar energy, nuclear energy, etc. to obtain electricity, heat and / or cooling is the main way of producing energy. At present, the steam Rankine cycle in which high-temperature and high-pressure steam is used to generate high-temperature and high-pressure steam to drive steam turbines to generate electricity is the main form of thermal power generation in industry. [0003] Angelino and Feher (Journal of Engineering Power 1968, 90: 287-295; Energy Conversion and Management) propose...

Claims

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Application Information

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IPC IPC(8): F25B30/06F25B17/02F22B1/18F01D15/10
CPCF01D15/10F02G2250/03F22B1/1807F25B17/02F25B30/06Y02E20/30Y02P80/15
Inventor 许闽淮秀兰蔡军李勋锋
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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