High-temperature and high-pressure gas flow heat exchange experimental device and method

Abstract

A high-temperature and high-pressure gas flow heat exchange experimental device and method are used for experimental study of flow heat exchange and pressure drop characteristics of gas under high-temperature and high-pressure conditions, and the experimental device comprises a gas supply system, a compressed air system, a vacuumizing system, a heating system, a cooling system, a measuring instrument and a signal acquisition system; the gas supply system is used for providing a gas source, controlling gas pressure, ensuring that an experiment runs at a preset flow and eliminating flow fluctuation; the compressed air system provides high-pressure air to drive the gas booster pump; the vacuum-pumping system is used for pumping away air in the loop and maintaining a vacuum environment in the vacuum cavity of the experimental section before the experimental loop is filled with high-purity gas; the heating system is used for preheating gas and heating an experiment section used for carrying out high-temperature and high-pressure gas flow heat exchange and pressure drop experiments; the cooling system is used for cooling high-temperature gas flowing out of the experiment section, so that the high-temperature gas can be recycled; and the measuring instrument and the signal acquisition system are used for measuring, acquiring and recording parameters such as pressure, flow and temperature in the experimental loop.

Description

technical field [0001] The invention relates to the field of gas flow heat exchange, in particular to an experimental device and method for high temperature and high pressure gas flow heat exchange. Background technique [0002] The high temperature and high pressure gas flow heat transfer experiment is one of the important topics in the research and development of high temperature gas-cooled reactors. For convective heat transfer in tubes, there are many different forms of heat transfer relational formulas in foreign countries, each with its corresponding scope of application. However, in the existing experimental research on gas flow heat transfer, most studies have fixed the diameter of the circular tube, and there is a lack of research on the flow and heat transfer characteristics of circular tubes with different diameters and rectangular slits with different widths. In the existing gas flow heat transfer experiments, the gas outlet temperature mostly does not exceed 70...

AI Technical Summary

Problems solved by technology

In the existing gas flow heat transfer experiments, the gas outlet temperature mostly does not exceed 700°C, and there is a lack of research on the gas flow heat transfer characteristics at high outlet temperatures

And lack of small-scale, modular experimental bench design

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