Supercritical carbon dioxide heat exchange experiment system and experiment method

The invention discloses a supercritical carbon dioxide heat exchange experiment system and experiment method. The supercritical carbon dioxide heat exchange experiment system comprises a gas source system, a heat exchange system, a tail gas system and a data acquisition system, the gas outlet end of the gas source system is communicated with the heat exchange system, the data acquisition system is arranged in an experiment area where the heat exchange system interacts with an experiment object, the heat exchange system is communicated with the tail gas system, and the tail gas system is communicated with the gas source system and/or the outside; a conventional industrial carbon dioxide gas source is changed into a high-pressure carbon dioxide gas source stored in the self-pressurization Dewar flask, a pressurization device of the gas source can be omitted, instability of the gas source is reduced, and the preparation time of supercritical carbon dioxide is shortened; the heat transfer boundary is controlled i