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RESEARCH PAPERS

Operation of Large-Scale Pumps and Valves in Molten Salt

[+] Author and Article Information
D. C. Smith

Science Applications International Corporation, Albuquerque, NM 87106

E. E. Rush, C. W. Matthews, J. M. Chavez

Sandia National Laboratories, Albuquerque, NM 87185

P. A. Bator

The Babcock and Wilcox Company, Barberton, OH 44203

J. Sol. Energy Eng 116(3), 137-141 (Aug 01, 1994) (5 pages) doi:10.1115/1.2930072 History: Received April 01, 1992; Revised February 01, 1994; Online June 06, 2008

Abstract

The molten salt pump and valve (P&V) test loops at Sandia National Laboratories (SNL) National Solar Thermal Test Facility (NSTTF) operated between Jan. 1988 and Oct. 1990. The purpose of the P&V test was to demonstrate the performance, reliability, and service life of full-scale hot and cold salt pumps and valves for use in commercial central receiver solar power plants. The P&V test hardware consists of two pumped loops; the “Hot Loop” to simulate the hot (565°C) side of the receiver and the “Cold Loop” to simulate the receiver’s cold (285°C) side. Each loop contains a pump and five valves sized to be representative of a conceptual 60-MWe commercial solar power plant design. The hot loop accumulated over 6700 hours of operation and the cold loop over 2500 hours of operation. This project has demonstrated that standard commercial scale pump and valve designs will work in molten salt. The test also exposed some pitfalls that must be avoided in specifying such equipment. Although certainly not all of the pitfalls were discovered, careful design and specification should result in reliable or at least workable equipment.

Copyright © 1994 by The American Society of Mechanical Engineers
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