In the application of solar energy thermal power plant, the most stringent requirements are the circulation of heat transfer fluid and the heat transfer of molten salt.

    Molten salt is usually a mixture of sodium nitrate (NaNO₃) and potassium nitrate (KNO₃). When the temperature of the molten salt at 400⁰C to 600⁰C, they put forward a severe test in the heat retaining, the hydraulic pressure and the seal three aspects. So the most important a pump is vertical molten salt pump in the application of solar poly thermal power plant.
    Due to the high temperature, so main problem is flow characteristics that it will be affected by the internal clearance. It would cause slip, slip depends on the gap that temperature change allowed. Therefore, careful design is crucial. The mapping software of heat distribution is to ensure that heat dissipation effect is good. If so, deformation can be reduced to the minimum.
    Design engineer said: "manufacture of high temperature molten salt pump products is usually without any problem. The difficulty lies in how molten salt pump is mounted to the salt shaker, because the pump shaft is long,  it can typically up to 14 to 17 meters."
    The molten salt pump correctly mounted to the molten salt shaker or on its support is very important, otherwise the pump will operate overheating. This will not only damage the pump and injects molten salt to around, it is very dangerous. If it is too cold, those things attached to the long pump shaft of molten salt that they can be frozen and freeze the rotary parts. But molten salt "ring" can reduce this trend. In addition, the pump shaft must be cooled.
    Thermal expansion is not a small problem in such a length. We do not forget that the molten salt  is very hot near the pump. So, these pumps are engineered products, it generally do not have the spot supply "
    Engineering and technical personnel of Warwick pump is using finite element analysis and thermal design software technology to overcome the problem of axial length and hot. Remaining manufacturers is not compared, all of these problems are solved.
    This vertical pump can be achieved by adjusting the multistage hydraulic and pressure. It is very suitable for the solar thermal power generation to apply. Its design ensures the mechanical vibration minimum, it fully meet the various variable submergence depth. GY type vertical molten salt pump of Jinan Warwick Pump provides long-term availability, reliability and corrosion resistance.
    FY features of Warwick include the following,
    Thermodynamic optimization design can ensure low lost to the surrounding heat loss, the whole transmission is profitable to pump the efficient functioning, manipulation simple roller bearing lubrication is not heated effect, through the pressure transmission part space separated to achieve optimal bearing lubrication effect. In addition, the disassembly and the maintenance is convenient and easy. It can change the working temperature and material combination to meet the special requirements of pump operation. In the flow rate of 4000 m³ / h and pressure difference is 320 m, the pressure meet the ANSI 900 (PN 64) level, working environment that temperature can up to 550⁰C. Careful design means without removed the heat pump, it can replace the bearings.