MIL-HDBK-1003/19
APPENDIX C
WORKSHEET 3
System Parameters
THERMAL STORAGE
Effective heat capacity:
EHC/Ac = ________ Btu/deg.F-f
(Direct gain or radiant heat panel only)
Diurnal heat capacity per ft2 of aperture:
DHC/Ac = ________ Btu/deg.F-f
FIRST SYSTEM
System type:
______________________
System number:
______________________
Scale factor:
F1 = ________
Effective aperture conductance (daily):
G1 = ________ Btu/deg.F-f
Steady-state aperture conductance (hourly):
Uc1 = ________ Btu/deg.F-f
System solar absorptance:
[alpha]1 = ________
Collection aperture area:
Ac1 = ________ ft2
SECOND SYSTEM
System type:
________
System number:
________
Scale factor:
F2 = ________
Effective aperture conductance (daily):
G2 = ________ Btu/deg.F-f
Steady-state aperture conductance (hourly):
Uc2 = ________ Btu/deg.F-f
System solar absorptance:
[alpha]2 = ________
Collection aperture area:
Ac2 = ________ ft2
FIRST SYSTEM AREA FRACTION
f1 = Ac1/(Ac1 + Ac2)
SECOND SYSTEM AREA FRACTION
f2 = Ac2/(Ac1 + Ac2)
MIXED SYSTEM PARAMETERS
Scale factor:
F = (f1 [multiplied by] F1) +
(f2 [multiplied by] F2) = ________
Effective aperture
G = (f1 [multiplied by] G1) +
conductance (daily):
(f2 [multiplied by] G2) = ________ Btu/deg.F-f
Steady-state aperture Uc = (f1 [multiplied by] Uc1) +
conductance (hourly):
(f2 [multiplied by] Uc2) = ________ Btu/deg.F-f
System solar absorptance: [alpha] = (f1 [multiplied by] [alpha]1) +
(f2 [multiplied by] [alpha]2) = ________
Collection aperture area:
Ac = Ac1 + Ac2 = ________ ft2
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