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Experimental study of direct in-situ generation of steam in a line focus solar collector. Final report

This report summarizes the results of an investigation to experimentally determine the practicality of generating steam directly within the receiver tube of a parabolic trough solar collector. Identified in the literature as in-situ boiling, this system concept features nucleate boiling and two-phase flow within the receiver tube. This effort included a literature survey of past work, design of a proof-of-concept test, system operation under a range of steam delivery temperatures and qualities, and analysis of the results. The proof-of-concept test was performed using an existing 120 foot long row of collector installed in McKittrick, California.