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Rankine cycle system and fluid working medium material construction method thereof

A technology of fluid working medium and circulation system, which is applied in steam engine devices, special data processing applications, instruments, etc., can solve immature problems, achieve the effects of improving thermophysical properties, reducing heat energy loss, and improving cycle thermal efficiency

Active Publication Date: 2017-03-22
CHINA NAT OFFSHORE OIL CORP +2
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  • Description
  • Claims
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Problems solved by technology

However, as far as the existing mixed fluid working fluids are concerned, the research on fluid working fluids applied to power generation processes under certain conditions, especially ultra-low temperature conditions, is still immature, and some thermodynamic properties of the compounds themselves, such as flammability, still need further research and improvement

Method used

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  • Rankine cycle system and fluid working medium material construction method thereof
  • Rankine cycle system and fluid working medium material construction method thereof
  • Rankine cycle system and fluid working medium material construction method thereof

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Embodiment 1

[0026] Such as figure 1As shown, the single-stage Rankine cycle system includes an evaporator 1, a first steam turbine 2, a condenser 3, and a pressure pump 4. The steam turbine 2 works externally, and the fluid working medium from the first steam turbine 2 enters the condenser 3 to be further condensed to a saturated state, and the condenser 3 outputs and utilizes the heat released by the fluid working medium in the condenser 3 . The fluid working medium condensed to saturated state is then compressed by the pressure pump 4 and returned to the evaporator 1 to complete a cycle process.

[0027] The construction method of the fluid working fluid material of the single-stage Rankine cycle system comprises the following steps:

[0028] 1) Based on the principle of thermal power generation cycle and the principle of thermal physical properties of compounds, select groups with high contribution to the safety of fluid working fluids and small contribution to pollution to establish ...

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Abstract

The invention relates to a Rankine cycle system and a fluid working medium material construction method thereof. The method comprises the steps of selecting out genes with high fluid working medium safety contribution values and low pollution contribution values to establish a gene database; determining a boundary condition of a thermal power generation circulation system and a thermophysical parameter range of a required fluid working medium material, screening out various genes in the gene database, performing combination and replacement on the genes, and forming a compound fluid working medium, wherein various thermophysical parameter values of a compound constructed by the selected genes are higher than or equal to those of CO2; determining a target function of the thermal power generation circulation system; calculating the thermophysical parameters of the compound fluid working medium, and selecting out the compound fluid working medium which meets the target function of the thermal power generation circulation system; and performing chemical synthesis feasibility verification on the compound fluid working medium, and applying the compound fluid working medium which passes the verification to the thermal power generation circulation system engineering. The system and the method can be widely applied to the thermal power generation circulation system.

Description

technical field [0001] The invention relates to a construction method of a working fluid material and a Rankine cycle system, in particular to a Rankine cycle system and a construction method of a fluid working fluid material. Background technique [0002] The Rankine cycle system is currently relatively mature in the field of waste heat power generation in China, and is widely used in thermodynamic cycle power generation systems, making important contributions to my country's energy conservation and emission reduction. Such as figure 1 As shown, in the single-stage Rankine cycle system used in the thermodynamic cycle power generation system, the fluid working fluid enters the evaporator 1 after being preheated by the preheater (marked in the figure), and absorbs heat in the evaporator 1 and evaporates into a gas , and then through the first steam turbine 2 to act externally, the fluid working medium coming out of the first steam turbine 2 first enters the preheater, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50F01K23/00
CPCY02E60/00
Inventor 张磊高为余黎明胡钰王玉川夏永强陈毅敏
Owner CHINA NAT OFFSHORE OIL CORP
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