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Study on the application of NASA energy management techniques for control of a terrestrial solar water heating systemThis paper addresses the potential for enhanced solar system performance through sophisticated control of the collector loop flow rate. Computer simulations utilizing the TRNSYS solar energy program were performed to study the relative effect on system performance of eight specific control algorithms. Six of these control algorithms are of the proportional type: two are concave exponentials, two are simple linear functions, and two are convex exponentials. These six functions are typical of what might be expected from future, more advanced, controllers. The other two algorithms are of the on/off type and are thus typical of existing control devices. Results of extensive computer simulations utilizing actual weather data indicate that proportional control does not significantly improve system performance. However, it is shown that thermal stratification in the liquid storage tank may significantly improve performance.
Document ID
19790054170
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Swanson, T. D.
(Mueller Associates, Inc. Baltimore, Md., United States)
Ollendorf, S.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1979
Subject Category
Energy Production And Conversion
Report/Patent Number
AIAA PAPER 79-0977
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Terrestrial Energy Systems Conference
Location: Orlando, FL
Start Date: June 4, 1979
End Date: June 6, 1979
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
79A38183
Distribution Limits
Public
Copyright
Other

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