CEN/CLC/TR 17603-31-04:2021
(Main)Space Engineering - Thermal design handbook - Part 4: Conductive Heat Transfer
Space Engineering - Thermal design handbook - Part 4: Conductive Heat Transfer
This Part 4 of the spacecraft thermal control and design data handbooks, provides information on calculating the conductive heat transfer rate for a variety of two and three-dimensional configurations.
Calculations for the conductance of the interface between two surfaces (joints) require special consideration and are included as a separate clause.
The Thermal design handbook is published in 16 Parts
TR 17603-31-01 Part 1
Thermal design handbook – Part 1: View factors
TR 17603-31-01 Part 2
Thermal design handbook – Part 2: Holes, Grooves and Cavities
TR 17603-31-01 Part 3
Thermal design handbook – Part 3: Spacecraft Surface Temperature
TR 17603-31-01 Part 4
Thermal design handbook – Part 4: Conductive Heat Transfer
TR 17603-31-01 Part 5
Thermal design handbook – Part 5: Structural Materials: Metallic and Composite
TR 17603-31-01 Part 6
Thermal design handbook – Part 6: Thermal Control Surfaces
TR 17603-31-01 Part 7
Thermal design handbook – Part 7: Insulations
TR 17603-31-01 Part 8
Thermal design handbook – Part 8: Heat Pipes
TR 17603-31-01 Part 9
Thermal design handbook – Part 9: Radiators
TR 17603-31-01 Part 10
Thermal design handbook – Part 10: Phase – Change Capacitors
TR 17603-31-01 Part 11
Thermal design handbook – Part 11: Electrical Heating
TR 17603-31-01 Part 12
Thermal design handbook – Part 12: Louvers
TR 17603-31-01 Part 13
Thermal design handbook – Part 13: Fluid Loops
TR 17603-31-01 Part 14
Thermal design handbook – Part 14: Cryogenic Cooling
TR 17603-31-01 Part 15
Thermal design handbook – Part 15: Existing Satellites
TR 17603-31-01 Part 16
Thermal design handbook – Part 16: Thermal Protection System
Raumfahrttechnik - Handbuch für thermisches Design - Teil 4: Leitender Wärmeübertragung
Ingénierie spatiale - Manuel de conception thermique - Partie 4 : Transfert de chaleur par conduction
Vesoljska tehnika - Priročnik o toplotni zasnovi - 4. del: Konduktivni prenos toplote
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2021
Vesoljska tehnika - Priročnik o toplotni zasnovi - 4. del: Konduktivni prenos toplote
Space Engineering - Thermal design handbook - Part 4: Conductive Heat Transfer
Raumfahrttechnik - Handbuch für thermisches Design - Teil 4: Konduktive
Wärmeübertragung
Ingénierie spatiale - Manuel de conception thermique - Partie 4: Transfert de chaleur par
conduction thermique
Ta slovenski standard je istoveten z: CEN/CLC/TR 17603-31-04:2021
ICS:
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL REPORT
CEN/CLC/TR 17603-31-
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
August 2021
ICS 49.140
English version
Space Engineering - Thermal design handbook - Part 4:
Conductive Heat Transfer
Ingénierie spatiale - Manuel de conception thermique - Raumfahrttechnik - Handbuch für thermisches Design -
Partie 4 : Transfert de chaleur par conduction Teil 4: Leitender Wärmeübertragung
This Technical Report was approved by CEN on 14 June 2021. It has been drawn up by the Technical Committee CEN/CLC/JTC 5.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2021 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. CEN/CLC/TR 17603-31-04:2021 E
reserved worldwide for CEN national Members and for
CENELEC Members.
Table of contents
European Foreword . 10
1 Scope . 11
2 References . 12
3 Terms, definitions and symbols . 13
3.1 Terms and definitions . 13
3.2 Abbreviated terms. 13
3.3 Symbols . 13
4 Conductive shape factors . 15
4.1 General . 15
4.2 Planar-planar surfaces . 16
4.2.1 Two-dimensional configurations . 16
4.3 Planar surface-cylindrical surface . 18
4.3.1 Two-dimensional configurations . 18
4.3.2 Axisymmetrical configuration . 21
4.4 Planar surface-spherical surface . 23
4.4.1 Plane and sphere . 23
4.5 Cylindrical-cylindrical surfaces . 25
4.5.1 Two-dimensional configurations . 25
4.6 Spherical-spherical surfaces . 41
4.6.1 Two concentric spheres . 41
5 Thermal joint conductance . 43
5.1 General . 43
5.1.1 Empirical correlations . 44
5.1.2 Thermal interface materials . 48
5.1.3 Joint geometries . 50
5.2 Bare metallic joints . 51
5.2.1 Metal-metal joints . 62
5.2.2 Metal-composite joints . 94
5.2.3 Composite-composite joints . 96
5.3 Interfacial materials between metals . 98
5.3.1 Metallic foils between metals . 98
5.3.2 Metallic oxide powders between similar metals . 109
5.3.3 Porous metallic materials between similar metals. . 109
5.3.4 Insulating spacers between similar metals . 119
5.3.5 Fluids between metals . 133
5.3.6 Elastomeric spacers between similar metals . 142
5.4 Outgassing data . 151
Bibliography . 153
Figures
Figure 4-1: Values of the conductive shape factor per unit length, S/L, vs. the
dimensionless width of the strip, X. Calculated by the compiler. . 17
Figure 4-2: Values of the conductive shape factor per unit length, S/L, vs. X for different
values of Y. Calculated by the compiler. . 19
Figure 4-3: Values of the conductive shape factor per unit length, S/L, vs.
dimensionless diameter of the cylinder cross section. Calculated by the
compiler. . 20
Figure 4-4: Values of the dimensionless conductive shape factor, S/L, vs. cylinder
diameter to length ratio, D/L. Calculated by the compiler. . 22
Figure 4-5: Values of the dimensionless conductive shape factor, S/D, vs. the
dimensionless diameter of the sphere, Z. Calculated by the compiler. . 24
Figure 4-6: Values of the conductive shape factor per unit length, S/L, vs. radius ratio,
ρ; for different values of the dimensionless distance between cylinder axes,
ε. Calculated by the compiler. . 26
Figure 4-7: Values of the dimensionless conductive shape factors per unit length, S /L,
ij
vs. the eccentricity of one of the holes X , for different values of the relevant
geometrical parameters. From Faulkner & Andrews (1955) [13]. . 28
Figure 4-8: Values of the conductive shape factors per unit length, S /L, vs. the
ij
diameter ratio d , for different values of the relevant geometric parameters.
From Faulkner & Andrews (1955) [13]. . 30
Figure 4-9: Values of the conductive shape factor per unit length, S/L, vs. the
dimensionless characteristic length of the holes, X. Calculated by the
compiler. . 32
Figure 4-10: Values of the conductive shape factor per unit length, S/L, vs. the
dimensionless diameter of the hole, X, for several values of the aspect
ratio, Y, of the rectangular bar cross-section. Calculated by the compiler. . 34
Figure 4-11: Values of the conductive shape factor per unit length, S/L, vs. the
dimensionless diameter of the hole, X, for different values of the aspect
ratio, Y, of the rectangular bar cross section. After Griggs, Pitts & Goyal
(1973) [25]. . 36
Figure 4-12: Values of the conductive shape factor per unit length, S/L, vs. the
dimensionless diameter of the hole, X, for several values of the aspect
ratio, Y, of the rectangular bar cross section. After Griggs, Pitts & Goyal
(1973) [25]. . 38
Figure 4-13: Values of the conductive shape factor per unit length, S/L, vs. the
dimensionless hole radius, ρ, for several values of n. Calculated by the
compiler. . 40
Figure 4-14: Values of the dimensionless conductive shape factor, S/r , vs. radius ratio,
ρ. Calculated by the compiler. . 42
Figure 5-1: Estimation of the temperature drop at the interface. . 43
Figure 5-2: Variation of gap thickness parameter, δ , with contact surface parameter, d.
ο
After Fletcher & Gyorog (1970) [17]. . 45
Figure 5-3: Variation of contact conductance with apparent interface pressure. After
Fletcher & Gyorog (1970) [17]. . 46
Figure 5-4: Dimensionless conductance vs. dimensionless load. Stainless steel under
vacuum conditions. From Thomas & Probert (1972) [47]. . 47
Figure 5-5: Dimensionless conductance vs. dimensionless load. Stainless steel under
vacuum conditions. From Thomas & Probert (1972) [47]. . 48
Figure 5-6: Schematic representation of two surfaces in contact and heat flow across
the interface. . 48
Figure 5-7: Interface material compressed between two contacting surfaces. . 49
Figure 5-8: Plots of contact conductance vs. contact pressure for two different surface
finishes. From Fried & Kelley (1966) [24]. . 51
Figure 5-9: Plot of contact conductance vs. contact pressure for two different surface
finishes. From Fried & Atkins (1965) [23]. . 52
Figure 5-10: Plots of contact conductance vs. contact pressure for two different surface
finishes. From Fried (1966) [22] quoted by Scollon & Carpitella (1970) [43]. . 53
Figure 5-11: Plot of contact conductance vs. contact pressure for different ambient
pressures. From Fried & Kelley (1966) [24]. . 54
Figure 5-12: Plots of contact conductance vs. contact pressure for different surface
finishes and ambient pressures. Circle: From Fried & Atkins (1965) [23].
Square: From Fried (1966) [21] quoted by Scollon & Carpitella (1970) [43]. . 55
Figure 5-13: Plot of contact conductance vs. contact pressure for different surface
finishes. From Clausing & Chao (1965) [7]. . 56
Figure 5-14: Plot of contact conductance vs. contact pressure for different surface
finishes. From Fried & Atkins (1965) [23]. . 57
Figure 5-15: Plot of contact conductance vs. contact pressure for various surface
finishes, mean temperatures and ambient pressures. Circle, square and
rhombus: from Clausing & Chao (1965) [7]. Triangle: from Fried (1966) [21]
quoted by Scollon & Carpitella (1970) [43]. . 58
Figure 5-16: Plot of contact conductance vs. contact pressure. Notice the directional
effect on contact conductance. From Fried & Kelley (1966) [24]. . 59
Figure 5-17: Plot of contact conductance vs. contact pressure for different surface
finishes. Circle and square: from Fried (1965) [21]. Rhombus and triangle:
from Fried & Atkins (1965) [23]. Inverted triangle and right-oriented triangle:
from Fried & Kelley (1966) [24]. . 60
Figure 5-18: Plot of contact conductance vs. contact pressure for different surface
finishes. Circle: From Fried (1966) [22] quoted by Scollon & Carpitella
(1970) [43]. Square: From Gyorog (1970) [26]. 61
Figure 5-19: Plot of contact conductance vs. contact pressure for different surface
finishes. From Fried (1966) [21] quoted by Scollon & Carpitella (1970) [43]. . 62
Figure 5-20: Plot of contact conductance vs. contact pressure for different surface
finishes: smooth surfaces. White square: from Padgett & Fletcher (1982)
[35]. Black square: from Padgett & Fletcher (1982) [35]. Black triangle: from
Fletcher & Gygorg (1971) [17]. Circle: from Clausing & Chao (1963) [7]. . 63
Figure 5-21: Plot of contact conductance vs. contact pressure for different surface
finishes: medium sur
...
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