Experiment device and experiment method for high-temperature high-flow-velocity gas flow heat transfer

Abstract

The invention discloses an experiment device and an experiment method for high-temperature high-flow-velocity gas flow heat transfer. The experiment device comprises a gas open circuit based on electromagnetic induction heating and pressure accumulation driving, and a water cooling closed circulation circuit. The gas open circuit of the experiment device mainly provides a gas source through a high-pressure gas storage tank, a pressure reduction valve, a regulation valve, a flowmeter and a check valve are arranged between the high-pressure gas storage tank and a heating section to form a circuit pressure and flow measurement module; the heating section is arranged in a pressure container, and an electromagnetic induction heater is adopted to provide heating power to form an experiment section system; a thermocouple and a pressure sensor are arranged on the heating section to form an experiment section temperature and pressure measurement module; and the water cooling closed circulationcircuit guarantees that a high-temperature tail gas working medium is released in the atmosphere under a low-temperature state after the high-temperature tail gas working medium is cooled. By use of the experiment device, high-temperature high-flow-velocity gas flow heat transfer characteristics under different working conditions can be researched, and reliable experiment data is provided for relevant gas cooling reactors, including high-temperature gas cooled reactors, nuclear heat propulsion reactors and the like.

Description

technical field [0001] The invention relates to the technical field of energy and power, in particular to a high-temperature and high-velocity gas flow heat exchange experimental device and an experimental method. Background technique [0002] Due to the needs of industrial production and scientific research in the field of energy and power, gas is used as a cooling medium in many power system equipment, such as hydrogen / helium cooling steam turbines, carbon dioxide cooling gas turbines, air cooling aeroengines, helium cooling nuclear Fission reactor core, helium cooling fusion reactor cladding, etc. However, the heat transfer performance of gas is worse than that of liquid, its thermal conductivity is low, and it is compressible under high temperature and high pressure conditions. Once the gas cannot export the heat in the system equipment, it will cause local overheating or even melting of the equipment, causing damage and endangering safety. Therefore, the heat transfer ...

AI Technical Summary

Problems solved by technology

However, the internal structure of the nuclear reactor is complex, the energy density is extremely high, and the gas flow is affected by thermal parameters and geometric structures, and heat transfer deterioration is extremely prone to occur under high temperature conditions in the reactor.

The flow and heat transfer of liquid has been studied on a considerable scale at home and abroad, but the flow and heat transfer of high-temperature gas is relatively complicated. The relevant research mainly focuses on numerical simulation and calculation of flow heat transfer, and there are few related experimental devices for research.

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