Device and method for testing performance of heat regenerator

Abstract

The invention discloses a device and method for testing the performance of a heat regenerator, which are used for heat regenerator performance testing. The device includes an oscillatory flow generating device, a piston phase angle adjusting device, a heat regenerator testing section and a cold and hot end heat exchanger, wherein the oscillatory flow generating device consists of a variable frequency motor, a piston cylinder and a belt pulley, and oscillatory flow conditions with different frequencies can be obtained by adjusting the rotating speed of the motor through a frequency converter; the piston phase angle adjusting device is composed of a transmission shaft and an indexing flange plate. The heat regenerator test section can be used for packaging heat regenerator fillers made of different materials, and real-time data including temperature and pressure data can be obtained through a data acquisition instrument after the heat regenerator test section is installed and fixed; the cold-end heat exchanger and the hot-end heat exchanger are shell-and-tube heat exchangers and are installed at the two ends of the heat regenerator base body respectively to generate needed high-temperature heat sources and needed low-temperature heat sources so as to meet the requirements for performance testing of the heat regenerator under different working conditions.

Description

technical field [0001] The invention relates to a test device and a test method, and is especially suitable for a regenerator performance test device and a test method for regenerator performance tests. Background technique [0002] As a device to improve the cycle efficiency of the system, the regenerator is widely used in regenerative cryogenic refrigerators, thermoacoustic engines, and Stirling heat engines. In the Stirling cycle, the working fluid completes the two important processes of isovolumic heat absorption and isovolumic heat release in the regenerator. The heat recovery efficiency of the regenerator directly affects the overall system cycle efficiency. [0003] The filling material of the inner matrix of the regenerator usually requires a small flow volume and a small flow resistance of the working fluid. The temperature change of the regenerator matrix should be small, so the ratio of the heat capacity of the matrix to the working fluid should be as large as ...

AI Technical Summary

Problems solved by technology

This method requires a complete machine, and the regenerator to be tested needs to be made into an actual size, so the cost of the experiment is very high

In addition, such a test method has limitations and cannot meet the experimental conditions of different types of regenerators

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