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RESEARCH PAPERS

A High-Pressure Window for Volumetric Solar Receivers

[+] Author and Article Information
J. Karni, A. Kribus

Environmental Sciences and Energy Research Department, The Weizmann Institute of Science Rehovot 76100, Israel

B. Ostraich, E. Kochavi

Rotem Industries, Ltd., P.O.B. 9046, Beer Sheva 84190, Israel

J. Sol. Energy Eng 120(2), 101-107 (May 01, 1998) (7 pages) doi:10.1115/1.2888051 History: Received July 01, 1997; Revised December 01, 1997; Online February 14, 2008

Abstract

The absorbing matrix of a volumetric (directly irradiated) solar receiver must be exposed to the concentrated incoming sunlight. Most applications require that the receiver operates at an elevated pressure and in many cases the working fluid is not air. These requirements can be met only if the receiver is equipped with a transparent window. A novel frustum-like high-pressure (FLHiP) window, made of fused silica, is presented. Optical, mechanical, and thermal analyses, over 1,000 hours of accelerated life-time tests and several hundred hours of tests in a solar receiver, show that this window satisfies the required criteria for operation in a volumetric solar receiver, whose operating pressure and peak absorber temperature reach 30 bar and 1700°C, respectively.

Copyright © 1998 by The American Society of Mechanical Engineers
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