Supercritical Freon heat exchange experiment system and experiment method thereof

Abstract

The invention discloses a supercritical Freon heat exchange experiment system and an experiment method thereof. The system comprises a vacuum and Freon injection module consisting of a vacuum pump, a coolant tank, a coolant recycling and injection machine, a valve and a pipeline connected to a main loop, a circulating module consisting of a shield pump and a closed type loop pipeline, a heat return module consisting of a heat regenerator and a bypass pipeline, a preheating module consisting of a snake-shaped preheating section and a direct current power supply, an experiment module consisting of an experiment section and a relevant valve, and a pressure adjustment module consisting of a high-pressure nitrogen bottle, a pressure stabilizer, a safety valve and a pressure reduction valve, wherein Freon flows into the experiment section after being subjected to heat regeneration and preheated from the outlet of the shield pump, and then finally returns to the inlet of the shield pump after being cooled by a condenser, thus forming a closed circulation. The invention further provides an experiment method of the system. The system can bear a higher-temperature working condition and a higher-pressure working condition, ensure that the Freon can run cyclically under a supercritical state, and also easily, conveniently and quickly adjust system parameters.

Description

technical field [0001] The invention belongs to the technical field of supercritical nuclear reactor thermohydraulic verification experiment research, and specifically relates to a supercritical freon heat exchange experiment system and an experiment method thereof. Background technique [0002] The supercritical water-cooled nuclear reactor is one of the six priority fourth-generation nuclear energy systems determined by the Fourth Generation International Nuclear Energy Forum (GIF) Paris Symposium. It uses supercritical water as the core coolant, and has high thermal efficiency and simple design structure. Etc. The flow and heat transfer characteristics of supercritical water as a core coolant are closely related to the safety of supercritical water-cooled reactors, so it is very important to study the thermal-hydraulic characteristics of supercritical water. Relevant research results show that the flow and heat transfer characteristics of Freon under supercritical condit...

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Problems solved by technology

However, it can only measure the pressure of the supercritical fluid in the heat exchanger, and it is completely impossible to conduct heat exchange experiments with supercritical fluid.

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