High temperature molten salt is selected by German FLEXIM ultrasonic flowmeter
[Abstract]: The molten salt is placed in the molten tank, and the side of the outer surface of the tank is heated and melted. After the temperature reaches 300 degrees or higher, the molten salt can flow in the pipeline and become a heat carrier. Currently, it has been matured in foreign countries. For example, new solar thermal power generation technology.
The world's first solar concentrating molten salt thermal power station (Gemasolar), supported by the European Investment Bank, was recently completed in Seville, a small town in southern Spain. Gemasolar is a new concentrating thermoelectric project that can continue to generate electricity in the absence of light in rainy weather and nights without light.
The Gemasolar project uses New Solar Thermal Electricity Generation Technology to utilize molten salts as energy storage and transport carriers. The concentrating system of the Gemasolar power station consists of more than 2,600 concentrating mirror panels scattered over 185 hectares of open space. The light energy received by the single mirror panel is accumulated in the central receiver, which heats the molten salt tank and forms high-temperature pressure vapor through heat conduction to drive the turbine to generate electricity. Excess energy generated by sufficient light is stored in the molten salt tank, releasing energy in the absence of sunlight, and can continue to supply power to the grid for 15 hours, thereby achieving 24 hours of uninterrupted power generation. What is the energy stored in the molten salt tank? It needs to be measured by an ultrasonic flow meter. At present, it has been proved that an ultrasonic flow rate (energy) meter capable of measuring such a high temperature fluid is suitable only for a flexim ultrasonic flow rate (energy) meter.
What medium is molten salt? In fact, it is a mixture of potassium nitrate (KNO3), sodium nitrite (NaNO2), sodium nitrate (NaNO3), and can be adjusted into molten salts having different physical properties according to different ratios as needed. The heat carrier furnace heats the powdery molten salt to a melting point of 300 ° C or higher, and recycles it in a molten flow state. The maximum working temperature is up to 560 °C. It has also been proved to be the best heat transfer carrier by foreign frontier science. At present, the heat transfer oil commonly used in China is very polluting, and it is difficult to dilute once it is leaked. The molten salt itself is salt, non-toxic and non-polluting, so it is widely used in the United States, the Netherlands, and Germany.
At present, the use of molten salt in China as a heat transfer carrier includes the Institute of Physics of the Chinese Academy of Sciences, the North University of Technology and other scientific research units. Recently, Shanghai Senyi Intelligent Intelligent Instrument Co., Ltd., at the invitation of the Institute of Physics of the Chinese Academy of Sciences, is running its heat carrier (high temperature). Molten salt) for measurement, on-site conditions:
Outer Diameter : 48.00 mm (outer diameter)
Wall Thickness : 3.50 mm (wall thickness)
Roughness : 0.1 mm (internal surface factor)
Pipe Material : Stainless Steel
Temp. (°C): 550 ° C (medium temperature)
Fluid: Nitrate
After the on-site installation and debugging of the technicians of Shanghai Senyi Intelligent Instrument Co., Ltd., the signal strength of the instrumentation is good, the measurement data is accurate, and the accuracy reaches 0.5. The experiment proves that the FLEXIM ultrasonic flowmeter has good stability, high repeatability and reliable measurement when measuring special conditions such as high temperature and high pressure.
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Zhejiang minmetals huitong import and export Co., Ltd , https://www.zjminmetals.com