Patent ID: 9651313
Date: 2017-05-16
CPC Classifications: C09K,F03G,F28D,F28F,Y02E

Claim:
1. A heat transfer system comprising: i) a tubular receiver positioned to receive heat from a heat source, the receiver comprising one or more enclosed tubes configured for gravity-driven flow of a particulate heat transfer fluid therethrough in a dense, unfluidized state having a particle volume fraction of at least about 25%; and ii) at least one storage vessel containing at least a portion of the particulate heat transfer fluid, the storage vessel in fluid communication with the tubular receiver and positioned to receive the heat transfer fluid therefrom, wherein the particulate heat transfer fluid comprises a plurality of particles of a metal-containing material having a melting point of greater than 800° C., the heat transfer fluid being substantially free of a liquid component.