The DIAPR: A high-pressure, high-temperature solar receiver

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Journal of Solar Energy Engineering

DOI:https://doi.org/10.1115/1.2871853· OSTI ID:488933

Karni, J; Kribus, A; Doron, P; Rubin, R; Fiterman, A ^[1]; Sagie, D ^[2]

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1. Weizmann Inst. of Science, Rehovot (Israel)
2. Rotem Industries Ltd., Beer Sheva (Israel)

A solar central receiver absorbs concentrated sunlight and transfers its energy to a working medium (gas, liquid or solid particles), either in a thermal or a thermochemical process. Various attractive high-performance applications require the solar receiver to supply the working fluid at high temperature (900--1,500 C) and high pressure (10--35 bar). As the inner receiver temperature may be well over 1,000 C, sunlight concentration at its aperture must be high (4--8 MW/m{sup 2}), to minimize aperture size and reradiation losses. The Directly Irradiated Annular Pressurized Receiver (DIAPR) is a volumetric (directly irradiated), windowed cavity receiver that operates at aperture flux of up to 10 MW/m{sup 2}. It is capable of supplying hot gas at a pressure of 10--30 bar and exit temperature of up to 1,300 C. The three main innovative components of this receiver are: a Porcupine absorber, made of a high-temperature ceramic (e.g., alumina); a Frustum-Like High-Pressure (FLHIP) window, made of fused silica; a two-stage secondary concentrator followed by the KohinOr light extractor. This paper presents the design principles of the DIAPR, its structure and main components, and examples of experimental and computational results.

• Sponsoring Organization: USDOE
• OSTI ID: 488933
• Journal Information: Journal of Solar Energy Engineering, Journal Name: Journal of Solar Energy Engineering Journal Issue: 1 Vol. 119; ISSN JSEEDO; ISSN 0199-6231
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
CAPACITY
CAVITY RECEIVERS
COMPUTER CALCULATIONS
DESIGN
PERFORMANCE
SOLAR FLUX