Device for performance testing of molten salt heat exchange/accumulation equipment

A technology of equipment performance and testing device, applied in the field of molten salt working medium heat exchange, can solve the problems of high cost, small flow range, limited types of molten salt heat exchange or heat storage equipment, etc. The effect of temperature regulation

Active Publication Date: 2016-03-23
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

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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

Method used

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  • Device for performance testing of molten salt heat exchange/accumulation equipment
  • Device for performance testing of molten salt heat exchange/accumulation equipment
  • Device for performance testing of molten salt heat exchange/accumulation equipment

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Experimental program
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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0050] The performance test device for molten salt heat exchange / heat storage equipment provided by the present invention needs to solve the following main difficulties: 1. How to accurately control the flow rate. In a large flow range, it is difficult to accurately adjust only by adjusting the frequency of the pump. Further adjustment of the flow rate through the valve may cause too much pressure fluctuation in the pipeline, which will cause leakage and damage accidents of the experimental pipeline or equipment, and increase the risk of the experiment.

[0051] 2. How to precisely control the heating power. For such a comprehensive experimental platform, the experimental test object is as large as an integral heat exchanger or as small as a single heat exchange tube; Using the power of the h...

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Abstract

The invention discloses a device for performances testing of molten salt heat exchange/accumulation equipment. The device comprises a high-temperature molten salt circulation loop and a cascade cooling system (a heat conduction oil circulation loop and a cooling water circulation loop). By utilizing a mode of combined adjustment of a variable frequency pump, a valve and a bypass line, it is guaranteed that flow of a working medium is adjusted accurately in a large range. By arranging multiple groups of electric heaters and by utilizing a mode of automatically adjusting power through a silicon controlled rectifier, the heating power and temperature can be adjusted accurately in a large range. By introducing nitrogen, molten salt and heat conduction oil can be prevented from being in contact with the air, and the service lives of the molten salt and the heat conduction oil are greatly prolonged. A molten salt heat exchange/accumulation performances testing comprehensive experimental platform has multifunctional characteristics, not only is suitable for testing flow, heat exchange and heat storage performances of the molten salt working medium, but also can be popularized to other liquid working mediums.

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...

Claims

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Application Information

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IPC IPC(8): G01N25/02
Inventor 何雅玲郑章靖王坤杜保存邱羽周一鹏梁奇吴明
Owner XI AN JIAOTONG UNIV
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