화학공학소재연구정보센터
Journal of Solar Energy Engineering-Transactions of The ASME, Vol.124, No.2, 170-175, 2002
Development of a high-temperature long-shafted, molten-salt pump for power tower applications
A new hot-salt pump has been developed for molten-salt solar power tower applications that will reduce the capital cost of the plant, eliminate many of the piping, valve and sump problems associated with the handling of molten salt, and improve the reliability of a critical part of the operating system of the plant. Previous systems required that the pumps in these plants be housed in shallow sunips that ivere gravity fed by the storage tanks. This new pump arrangement will eliminate the sump level-control valves and the potential for overflowing the pump sump vessels. Until now, only cantilever pumps were qualified for hot molten-salt service because no suitable bearing materials had been, tested. This paper describes the successful qualification of a long-shafted pump with salt-lubricated bearings tested for over 5000 hours with nitrate salt at 565degreesC.