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Volumetric Ceramic Receiver Cooled by Open Air Flow — Feasibility Study —

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Abstract

To find out whether a volumetric ceramic receiver could be suitable for high temperature application in an open air cooling system, a feasibility study with respect to thermal loading was commissioned by DFVLR *) to Interatom GmbH. The ceramic type receiver should be orientated at manufacture possibilities of Silicon Carbide and Silicon Nitride ceramic heat exchangers of HOECHST Ceram Tec.

Keywords

Heat Transfer Thermal Efficiency Heat Transfer Coefficient Mass Flow Rate Pressure Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Symbolics

L

Channel Length / m /

s

Channel width /m / = hydraulic diameter of the channel

b

Wall thickness between two adjacent channels / m /

x

Distance along the channel / m /

Nu

Nusselt number

Re

Reynolds number

Pe

Peclet number

w

Gas velocity / m/s /

ν

Air viscosity /m2 /s /

λ

Conductivity /W/mK /

A = s2

Cross section area of orifice /m2 /

AF = (s + b)2

Face (back side) area with orifice /m2 /

ζ

Pressure loss coefficient

ρ

Density /kg/m3 /

Δp

Pressure loss / Pa /

Flow rate /kg/s /

ŋ

Efficiency

Heat flux / W/m2 /

ε

Emissivit

F

Face in inlet

A

Air out outlet

S

Solid (cermic) M mean

C

Channel St “Standard”

f

friction B Backscattering

l

loss reflection

l

loss reflection

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References

  1. /1/.
    Grönefeld, G. “Programm LIWAK” Interatom-Notiz Nr. 35.02353.3 dated 25. 11. 85Google Scholar
  2. /2/.
    Müller, K. “ALBEMO, ein Programm zur Berechnung des Strahlungstransportes in Hohlräumen für Neutronen-, Gamma-und Wärmestrahlung” Interatom-Bericht Nr. 70.03565.6 dated 12. 10. 85Google Scholar
  3. /3/.
    Churchill, S. W. and Bernstein, M. A Correlating Equation for Forced Convection from Gases and Liquids to a Circular Cylinder in Crossflow, J. Heat Transfer, Vol. 99, pp. 300–306, 1977 cited in J. P. Holman, Heat Transfer, 5th Edition, 1981, McGraw-HillGoogle Scholar
  4. /4/.
    Kays, W. M. Trans. ASME, 77, 1265 (1955), cited in/7 /Google Scholar
  5. /5/.
    VDI-Wärmeatlas, 2. Auflage, 1974 p. Gb 5Google Scholar
  6. /6/.
    Idelchik, I. E. Handbook of Hydraulic Resistance, 2. Edition, 1986, Hemisphere Publishing CorporationGoogle Scholar
  7. /7/.
    Rohsenow, W. M. and Choi, H. Y. Heat, Mass and Momentum Transfer, 1961 Prentice-Hall Inc.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  1. 1.InteratomBergisch-GladbachGermany

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