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Thermal Storage of Solar Energy pp 111–122Cite as

A Theoretical Study of Ashrae Standard 94-77 for Testing Thermal Storage Devices

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Abstract

In the solar field the ASHRAE Standard 94-77, ref. 1, has formed the basis for the testing of thermal storage devices on the basis of thermal performance. However, the application of this Standard on a prototype phase change storage device has been found to lead to meaningless results. Therefore it is the intention of this article to review the procedure as applied to an ideal fully mixed sensible heat store powered by an imbedded heat exchanger, without internal capacity and thereby demonstrate that the Standard

  1. (a)

    fails to correctly identify the loss coefficient,

  2. (b)

    is confused and confusing as to the form of the loss term during a charge test,

  3. (c)

    fails to identify the heat exchanger effectiveness necessary for modelling and system performance,

  4. (d)

    is incorrect in its assumption of zero loss during a discharge test.

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References

  1. Hill, J. E. et al. ASHRAE Standard 94-77, Methods of Testing Thermal Storage Devices based on Thermal Performance, ANSI B 199. 1-1977, American Soc. of Heat, Refrig. and Air Con. Eng. Inc., 345 E 47th St., New York, N.Y. 10017, USS.

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  2. Hill, J.E. and Kelley, I. E. 1974. Method of Testing for Rating Thermal Storage Devices based on Thermal Performance, NBSIR 74-644, National Bureau of Standards, Washington, DC.

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  3. Hunt, B. J., Richtmeyer, T. E., Hill, J. E. 1978. An Evaluation of ASHRAE Standard 94-77 for Testing Water Tanks for Thermal Storage, NBSIR 78-1548, National Bureau of Standards, Washington, DC.

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  4. Jones, D. E. and Hill, J. E. 1979. Testing of Pebble Bed and Phase Change Storage Devices according to ASHRAE Standard 94-77, NBSIR 79-1737, National Bureau of Standards, Washington, DC.

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  5. Van Galen. E. 1979. Recommendations for Testing Thermal Storage Devices, CEC Coordinator on Storage, TNOTPD, Delft, Holland. Private communication

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Authors
  1. R. H. Marshall
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Editor information

Editors and Affiliations

  1. Institute of Anplied Physics TNO-TH, Stieltjesweg 1, 2628 CK, Delft, Netherlands

    C. den Ouden

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© 1981 TNO and Martinus Nijhoff Publishers, The Hague

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Marshall, R.H. (1981). A Theoretical Study of Ashrae Standard 94-77 for Testing Thermal Storage Devices. In: den Ouden, C. (eds) Thermal Storage of Solar Energy. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8302-1_13

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  • DOI: https://doi.org/10.1007/978-94-009-8302-1_13

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-8304-5

  • Online ISBN: 978-94-009-8302-1

  • eBook Packages: Springer Book Archive

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