MIL-HDBK-1003/19
APPENDIX D
WORKSHEET 7
System Efficiencies During Reference Month
TOTAL SYSTEM EFFICIENCY
Total effective load coefficient:
TLCe = NLC + G [multiplied by] Ac =
31,744 Btu/d
Solar heating fraction:
SHF = 1 - e -SLR* =
0.47
Total efficiency:
TLC [multiplied by] SHF + (24 Uc - G) Ac
0.86
et = =
[alpha] (VTn/DD) Ac
(NOTE:
et = ed [multiplied by] eu)
DELIVERY EFFICIENCY
ed =
1.0
et
UTILIZATION EFFICIENCY
eu
= 0.86
ed
181
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