Heat Transfer Modeling of the IEA/SSPS Volumetric Receiver

[+] Author and Article Information
R. D. Skocypec

Fluid and Thermal Sciences Department, Sandia National Laboratories, Albuquerque, N.M. 87185-5800

R. F. Boehm

University of Utah, Salt Lake City, Ut. 84112

J. M. Chavez

Solar Energy Department, Sandia National Laboratories, Albuquerque, N.M. 87185-5800

J. Sol. Energy Eng 111(2), 138-143 (May 01, 1989) (6 pages) doi:10.1115/1.3268299 History: Received April 01, 1988; Revised December 01, 1988; Online November 11, 2009


During the summer and fall of 1987 in Almeria, Spain, a wire-pack receiver was tested by the International Energy Agency/Small Solar Power Systems (IEA/SSPS). The basic operation of the receiver is that: air is drawn through several layers of stainless steel wire screen; concentrated solar flux is directed on the face of the screen pack; the oxidized wires absorb the solar energy; and heat is transferred to the air flowing through the screen. Although the experiment goal was strictly proof-of-concept and was not receiver characterization, modeling efforts were initiated to help understand the experimental results. The steady-state performance of the receiver is modeled using the fact that the net solar and infrared radiative energy absorbed by each screen layer must be transferred to the air by convection. Basic performance trends and typical calculations of receiver efficiency are given. Model predictions and experimentally measured temperatures and flow rates are compared. Model predictions of receiver power and efficiency are generally higher than the test results (operational modifications of the receiver absorber as tested are believed to have produced nonideal conditions), but trends are consistent with experimental data.

Copyright © 1989 by ASME
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