Device and method for measuring heat exchange characteristics of high-temperature molten salt in micro-channel

Abstract

The invention discloses a device for measuring heat exchange characteristics of a high-temperature molten salt in a micro-channel. The device comprises a high-temperature molten salt heating pipe section, a water circulation pipe section, a test and product collecting pipe section and a data collecting and display module. High-pressure nitrogen gas pushes a high-temperature molten salt so that a flow heat exchange system is established in a micro-channel. A pressure reducing valve and a regulating valve adjust the flow of a working medium. A thyristor transformer adjusts heating power so thatthe system operation temperature is kept. Through the heat balance principle of a brine heat exchanger, the molten salt flow is measured. An electronic balance records the molten salt weight in real time and calculates the molten salt flow. Compared with the existing device, the device has the advantages of low cost, easy operation and reliable operation. The device improves the measuring method of the high temperature molten salt heat exchange, and fills the technical defects of the current molten salt heat exchange characteristic measurement in the micro-channel.

Description

technical field [0001] The invention belongs to the technical field of testing devices for heat transfer characteristics of molten salt in tiny channels, in particular to a device for measuring heat transfer characteristics of high-temperature molten salt in tiny channels, and also relates to a method for measuring heat transfer characteristics of high-temperature molten salt in tiny channels. Background technique [0002] With its high heat transfer temperature, low saturated vapor pressure, low viscosity, and large specific heat, molten salt has been widely used in nuclear power plants, solar thermal power generation and other energy fields as a heat transfer and heat storage medium, and has a broad development prospects. The excellent heat transfer performance determines the economy, stability and reliability of the system where it is located, and has a huge impact on industrial production and national life. Therefore, it is necessary to study the heat transfer character...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a measuring device for the heat transfer characteristics of high-temperature molten salt in a tiny channel, which solves the problems of large molten salt test platform system, high cost and low operational reliability in the prior art

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