High-temperature working medium heat exchange test system using heat conducting oil as hot fluid and test method

Abstract

The invention relates to a high-temperature working medium heat exchange test system using heat conducting oil as hot fluid and a test method. The system comprises a first loop, a heat-temperature heat conducting oil second loop and a cold well third loop of the heat-temperature heat conducting oil second loop, wherein the first loop is connected in series with a lateral passage of a casing of a heat exchanger test element and provides high-temperature test work media for test; the high-temperature heat conducting oil second loop is connected in series with an inlet and outlet header box of the heat exchanger test element and provides a heat source for test; the cold well third loop of the heat-temperature heat conducting oil second loop is connected in series with a cold fluid side of a heat exchanger of the heat-temperature heat conducting oil second loop providing the heat source for test. The invention also discloses the test method. The system and the method can meet the requirement of flowing heat exchange characteristics of high-temperature work media in heat exchanger equipment, particularly a pipe case type heat exchanger in the field of nuclear reactor engineering thermal-hydraulic verification test study, and has the advantages that the structure is simple, the operation is convenient, the temperature flow rate can be easily and precisely controlled, a heating system is low in pressure, safety and economy are realized, and the system and the method can be applicable to the temperature being higher than 200 DEG C and lower than 350 DEG C.

Description

technical field [0001] The invention relates to a test method and system for heat transfer characteristics of high-temperature working fluid flowing in reactor system equipment in the technical field of nuclear reactor engineering thermal-hydraulic verification test research, in particular to a high-temperature working fluid exchange using heat-conducting oil as a thermal fluid. Thermal testing system and method. Background technique [0002] In the steam generator and the steam-water separation reheater of the nuclear reactor system, the working medium inside and outside the tube is under high temperature conditions. Around 280°C. In order to meet the increasing safety and reliability requirements of nuclear power system equipment, the verification test level of nuclear reactor thermal hydraulic system equipment also needs to be guaranteed and improved accordingly. In order to study the flow and heat transfer characteristics of the high-temperature working fluid outside t...

AI Technical Summary

Problems solved by technology

However, high-temperature molten salt has poor fluidity and immature physical parameters. It has poor fluidity and is easy to solidify at a temperature of 280°C. It is not suitable for heat transfer tests at temperatures below 300°C.

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