Finite time thermodynamic experiment platform and experiment method based on ideal gas

Abstract

The invention discloses an ideal gas-based finite time thermodynamic experiment platform and experiment method. The experiment platform comprises a cylinder, gas capacitors, a stepping motor, a water bath kettle and a data processing system, the gas capacitors are sealed cavity containers, the cylinder is communicated with the gas capacitors in a sealed mode, and the cylinder and the gas capacitors are jointly arranged in the water bath kettle; the stepping motor is connected with a piston of the cylinder and drives the piston to move; a displacement sensor is arranged on a piston of the air cylinder, a pressure sensor is installed on each gas capacitor in a sealed mode, and the displacement sensor and the pressure sensor are in communication connection with the data processing system; and the data processing system receives measurement data of the displacement sensor and the pressure sensor and can draw a P-V curve of gas. The platform is simple in structure, convenient to operate and high in measurement precision, all thermodynamic quantities to be measured are obtained by measuring and drawing a P-V curve of gas, thermodynamic circulation can be constructed, and the circulation power and efficiency can be measured.

Description

technical field [0001] The invention relates to the technical field of thermodynamic experiments, in particular to an ideal gas-based finite-time thermodynamic experiment platform and an experiment method. Background technique [0002] Finite-time thermodynamics is an extension and extension of classical thermodynamics, a new branch of irreversible thermodynamics developed in the 1930s, and an important part of the non-equilibrium thermodynamics field in physics. At the same time, finite-time thermodynamics is also an interdisciplinary field of modern thermodynamic theory, and it is one of the theoretical tools used in current thermal engineering. This field mainly studies the law of energy transfer and irreversible behavior satisfaction of non-equilibrium systems in finite-time thermodynamic processes. Although the theoretical research of finite-time thermodynamics has made great progress in the past few decades, there is still a lack of experimental systems and methods th...

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Problems solved by technology

[0003] The main reason for the above difficulties is the lack of experimental methods and experimental systems that can accurately measure the evolution of some thermodynamic quantities over time in non-equilibrium thermodynamic systems.

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