An experimental device and method for studying the flow and heat transfer characteristics of ultra-high temperature rare gases

Abstract

An experimental device and method for studying flow and heat transfer characteristics of ultrahigh-temperature rare gases, the device includes a gas storage cylinder group, a heating test section, a cooling test section, a gas-water heat exchanger, a high-pressure gas pump, a vacuum pump, a gas pipeline, and a pipeline A gas circuit composed of valves on the pipeline; a cooling oil circuit composed of oil storage tanks, oil pumps, oil-water heat exchangers, oil pipelines and valves on pipelines; a cooling water circuit composed of water towers, water pumps, water pipelines and valves on pipelines ; It is used to simulate the flow and heat transfer characteristics of rare gases in ultra-high temperature gas reactors; the experimental circuit uses a high-pressure gas pump, and is equipped with a heating experiment section and a cooling experiment section at the same time, realizing the heating flow exchange for different states of high-temperature rare gases. Experimental research on thermal characteristics and cooling flow heat transfer characteristics, the device of the present invention can withstand ultra-high temperature rare gas conditions, while taking into account the economy of the experimental device, the experimental process is simple to operate, and the experimental circuit is safe and reliable.

Description

technical field [0001] The invention relates to the technical field of ultra-high temperature gas reactor thermal hydraulics, in particular to an experimental device and method for studying flow and heat transfer characteristics of ultra-high temperature rare gas. Background technique [0002] Ultra-high temperature gas-cooled reactor has the advantages of high power conversion efficiency and huge potential application market. It is a new type of nuclear reactor with development potential, and has received continuous attention from researchers in recent years. [0003] Rare gas is used as the working gas in the ultra-high temperature gas-cooled reactor. Its heating flow heat transfer characteristics inside the core and cooling flow heat transfer characteristics in the process of energy conversion / transfer outside the core are important in the ultra-high temperature gas-cooled reactor. thermohydraulic phenomena. In the reactor core, the rare gas used as the working medium ne...

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Problems solved by technology

[0004] In view of the above research ideas, the existing domestic and foreign research programs have the following deficiencies: 1) The lack of research experimental devices for ultra-high temperature rare gases; 2) The experimental devices cannot operate stably for a long time under ultra-high temperature conditions; 3) The experimental devices All use tungsten alloy, expensive

These design drawbacks limit the in-depth research on the flow and heat transfer characteristics of ultra-high temperature rare gases, and hinder the development of ultra-high temperature gas-cooled reactors

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