A performance testing device for molten salt heat exchange/heat storage equipment

Abstract

The invention discloses a performance testing device for molten salt heat exchange / heat storage equipment, which includes a high-temperature molten salt circulation loop and a cascaded cooling system (heat-conducting oil circulation loop and cooling water circulation loop); The combined adjustment method ensures a wide range of precise adjustment of the flow rate of the working fluid; by setting multiple sets of electric heaters and using the thyristor to automatically adjust the power, the heating power and temperature can be accurately adjusted in a wide range; by introducing nitrogen, the molten salt and heat conduction can be isolated The oil is in contact with air, which greatly prolongs the service life of molten salt and heat transfer oil. The comprehensive experimental platform for heat exchange or heat storage performance testing of molten salt of the present invention has multi-functional features, and is not only suitable for testing the flow, heat exchange and heat storage performance of molten salt working medium, but also can be extended to other liquid working medium.

Description

technical field [0001] The invention belongs to the technical field of molten salt heat exchange and relates to a performance test device for molten salt heat exchange / heat storage equipment. Background technique [0002] Molten salt has the characteristics of wide temperature range, good thermal stability, low vapor pressure, large heat capacity, strong solubility for substances, and low viscosity; at the same time, the price of molten salt is relatively cheap. These characteristics make molten salt a heat transfer / storage fluid with broad application prospects, and is widely used in many fields such as metallurgy, chemical engineering, nuclear power, and solar energy. Especially in the fields of nuclear power and solar energy, molten salt is one of the most promising heat transfer and heat storage media. At present, there are large-scale molten salt solar power plants on a commercial scale in the world. [0003] Compared with conventional heat transfer and heat storage f...

AI Technical Summary

Problems solved by technology

Moreover, the cost of the experimental platform is very high

[0004] Although there are some experimental platforms for molten salt performance testing, the experimental system is relatively simple, and the flow range of the system is small (the maximum flow rate is less than 2m 3 / h)

The types of molten salt heat exchange or heat storage equipment that can be tested on the experimental platform are limited. For example, only small-scale experimental tests such as single tubes and simple sleeves can be carried out, and it is difficult to realize some integrated heat exchange or heat storage equipment with larger flows. Performance Testing

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