NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Determination of Thermal State of Charge in Solar Heat ReceiversThe research project at Howard University seeks to develop analytical and numerical capabilities to study heat transfer and fluid flow characteristics, and the prediction of the performance of solar heat receivers for space applications. Specifically, the study seeks to elucidate the effects of internal and external thermal radiation, geometrical and applicable dimensionless parameters on the overall heat transfer in space solar heat receivers. Over the last year, a procedure for the characterization of the state-of-charge (SOC) in solar heat receivers for space applications has been developed. By identifying the various factors that affect the SOC, a dimensional analysis is performed resulting in a number of dimensionless groups of parameters. Although not accomplished during the first phase of the research, data generated from a thermal simulation program can be used to determine values of the dimensionless parameters and the state-of-charge and thereby obtain a correlation for the SOC. The simulation program selected for the purpose is HOTTube, a thermal numerical computer code based on a transient time-explicit, axisymmetric model of the total solar heat receiver. Simulation results obtained with the computer program are presented the minimum and maximum insolation orbits. In the absence of any validation of the code with experimental data, results from HOTTube appear reasonable qualitatively in representing the physical situations modeled.
Document ID
19960052309
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Glakpe, E. K.
(Howard Univ. Washington, DC United States)
Cannon, J. N.
(Howard Univ. Washington, DC United States)
Hall, C. A., III
(Howard Univ. Washington, DC United States)
Grimmett, I. W.
(Howard Univ. Washington, DC United States)
Date Acquired
August 17, 2013
Publication Date
July 1, 1996
Publication Information
Publication: HBCUs Research Conference Agenda and Abstracts
Subject Category
Energy Production And Conversion
Report/Patent Number
Paper-13
Accession Number
96N35506
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available