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Theoretical and experimental investigations into the safety behavior of small HTRs under natural convection conditions

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  • Barthels, H.
  • Rehm, W.
  • Jahn, W.

Abstract

This paper describes further results obtained with the experimental facility LUNA-HTR for the study of natural convection/circulation characteristics of different HTR primary circuits. In consideration of thermodynamic similarity principles, transients with heat removal via natural convection from a pebble bed into the primary circuit were simulated. The mass flow and the temperatures in the loop were simulated. The mass flow and the temperatures in the loop were measured for different geodetic heights of the heat exchanger position and starting temperature conditions, as well as calculated with the code THERMIX-CRAY-2D. Depending on these various conditions, an upward or downward mass flow, or a flow reversal, have been studied in detail in new experiments.

Suggested Citation

  • Barthels, H. & Rehm, W. & Jahn, W., 1991. "Theoretical and experimental investigations into the safety behavior of small HTRs under natural convection conditions," Energy, Elsevier, vol. 16(1), pages 371-380.
    • Handle: RePEc:eee:energy:v:16:y:1991:i:1:p:371-380
    DOI: 10.1016/0360-5442(91)90116-4
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    Cited by:

    1. Biswal, Pratibha & Basak, Tanmay, 2014. "Bejan's heatlines and numerical visualization of convective heat flow in differentially heated enclosures with concave/convex side walls," Energy, Elsevier, vol. 64(C), pages 69-94.
    2. Basak, Tanmay & Anandalakshmi, R. & Kumar, Pushpendra & Roy, S., 2012. "Entropy generation vs energy flow due to natural convection in a trapezoidal cavity with isothermal and non-isothermal hot bottom wall," Energy, Elsevier, vol. 37(1), pages 514-532.
    3. Anandalakshmi, R. & Kaluri, Ram Satish & Basak, Tanmay, 2011. "Heatline based thermal management for natural convection within right-angled porous triangular enclosures with various thermal conditions of walls," Energy, Elsevier, vol. 36(8), pages 4879-4896.
    4. Kaluri, Ram Satish & Basak, Tanmay, 2010. "Analysis of distributed thermal management policy for energy-efficient processing of materials by natural convection," Energy, Elsevier, vol. 35(12), pages 5093-5107.

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