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A simulation calculation method and system for physical properties of water-containing air mixture

A technology of simulation calculation and mixture, applied in the field of simulation calculation, can solve problems such as deviation, and achieve the effect of improving accuracy and stabilizing control effect

Active Publication Date: 2022-05-27
ZHEJIANG SUPCON TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a simulation calculation method and system for the physical properties of water-air mixtures to solve the problem that the existing simulation calculations will deviate when calculating the mixture of water vapor and air

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  • A simulation calculation method and system for physical properties of water-containing air mixture
  • A simulation calculation method and system for physical properties of water-containing air mixture
  • A simulation calculation method and system for physical properties of water-containing air mixture

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Embodiment Construction

[0052] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with the examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0053] In September 1997, the International Association of Water and Water Vapor Properties held a meeting in Erlangen, Germany, at which the "1997 Industrial Formula for Thermal Properties of Water and Water Vapor", referred to as the IAPWS-IF97 formula, was published.

[0054] IAPWS-IF97 Industrial Formulas contains a series of formulas for different partitions, covering the following valid ranges:

[0055] 273.15K≤71≤1073.15K p≤100MPa

[0056] 1073.15K≤T≤2273.15K P≤10MPa

[0057] like figure 1 As shown, the IAPWS-IF97 formula divides the above valid range into 5 partitions (in fact, it merges the 3 and 4 and 5 an...

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Abstract

The invention provides a simulation calculation method for the physical properties of water-containing air mixtures, comprising the following steps: performing gas-liquid equilibrium calculation on the mixture, and calculating the thermodynamic properties of water based on the first simulation algorithm and the second simulation algorithm respectively; The parameters calculated by the second simulation algorithm are compared with the actual parameters, and the result close to the actual parameters is selected as the simulation result output. The water-containing air mixture physical property simulation calculation method of the present invention establishes a corresponding relationship based on the interval of IAPWS-IF97 and the state of the mixture so that the simulation calculation result is closer to the actual, and uses the extrapolation method to supplement the IAPWS-IF97 calculation interval. The defined calculation effectively improves the accuracy of the simulation calculation results of the physical properties of the water vapor mixture.

Description

technical field [0001] The invention relates to the technical field of simulation calculation, in particular to a method and system for simulation calculation of physical properties of a water-air mixture. Background technique [0002] The design, manufacture, production operation, performance analysis and experimental research of equipment and systems related to steam power engineering are inseparable from the calculation of water and steam properties. The International Society for Thermal Properties of Water and Water Vapor (IAPWS) adopted a new formula IAPWS-IF97 for the thermal properties of industrial water and water vapor, which was adopted in 1997 and published in 1998. Compared with the original IFC67 formula, this formula has many advantages and has become a new international standard. [0003] The existing physical property simulation calculation based on IAPWS-IF97 can be used to calculate the thermodynamic properties of water vapor, such as enthalpy, entropy, de...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/08G06F119/14
CPCG06F30/20G06F2119/08G06F2119/14
Inventor 褚健王吉章佳明黄华杰章凌
Owner ZHEJIANG SUPCON TECH