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.
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Abbreviations
- 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 /
- ṁ:
-
Flow rate /kg/s /
- ŋ:
-
Efficiency
- EquationSource % MathType!MTEF!2!1!+- % feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGabmyCayaaca % aaaa!36F3!]]</EquationSource><EquationSource Format="TEX"><![CDATA[$$\dot q$$ :
-
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
References
Grönefeld, G. “Programm LIWAK” Interatom-Notiz Nr. 35.02353.3 dated 25. 11. 85
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. 85
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-Hill
Kays, W. M. Trans. ASME, 77, 1265 (1955), cited in/7 /
VDI-Wärmeatlas, 2. Auflage, 1974 p. Gb 5
Idelchik, I. E. Handbook of Hydraulic Resistance, 2. Edition, 1986, Hemisphere Publishing Corporation
Rohsenow, W. M. and Choi, H. Y. Heat, Mass and Momentum Transfer, 1961 Prentice-Hall Inc.
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© 1987 Springer-Verlag Berlin Heidelberg
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Freudenstein, K., Karnowsky, B. (1987). Volumetric Ceramic Receiver Cooled by Open Air Flow — Feasibility Study —. In: Becker, M. (eds) Solar Thermal Energy Utilization. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-01628-2_1
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DOI: https://doi.org/10.1007/978-3-662-01628-2_1
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-18031-9
Online ISBN: 978-3-662-01628-2
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