Single-component hydrocarbon fuel energy property prediction method based on corrected zero potential energy surface

Abstract

The invention discloses a single-component hydrocarbon fuel energy property prediction method based on a corrected zero potential energy surface, and the method comprises the steps: setting a temperature and pressure range of a single-component hydrocarbon fuel to be calculated and verified, and calculating all internal energy, enthalpy and entropy data of the single-component hydrocarbon fuel in the temperature and pressure range in simulation software; obtaining internal energy, enthalpy and entropy data of experimental measurement of the single-component hydrocarbon fuel within the same temperature and pressure range; determining a working condition of the single-component hydrocarbon fuel at a standard boiling point, and taking a position corresponding to the working condition as a new zero potential energy surface; and correcting the obtained internal energy, enthalpy and entropy data based on the new zero potential energy surface and the internal energy, enthalpy and entropy data measured by the single-component hydrocarbon fuel experiment to be calculated and verified. On the basis of the set temperature and pressure range of the single-component hydrocarbon fuel to be calculated and verified, the temperature and pressure range of the single-component hydrocarbon fuel is expanded, and then energy properties such as internal energy, enthalpy and entropy of the single-component hydrocarbon fuel in the wide temperature and pressure range are predicted.

Description

technical field [0001] The invention relates to the technical field of hydrocarbon fuels, in particular to a method for predicting the energy properties of single-component hydrocarbon fuels based on the corrected zero potential energy surface. Background technique [0002] Hydrocarbon fuel is a general term for compounds whose molecular formula only contains carbon atoms and hydrogen atoms. It is widely used in rocket engines, turbine engines, ramjets and other power machinery, and is one of the essential liquid fuels for energy power devices. [0003] However, with the proposal of the "dual carbon" goal, the realization of high-quality economic development and carbon peaking and carbon neutralization have put forward new requirements for the application of hydrocarbon fuel energy properties and the expansion of application conditions. When the temperature and pressure of the liquid fuel exceed a certain value, the gas-liquid interface disappears and becomes a homogeneous s...

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Problems solved by technology

The existing National Institute of Standards and Technology (NIST) database calculates the energy properties of various hydrocarbon fuels. It is recognized as a relatively comprehensive database of energy properties, but the working conditions involved are limited, and its calculation is not known. principle, the energy properties of hydrocarbon fuels after the critical state cannot be obtained

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