A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...

REFTHP
AREF
REFRC
REFLP
REFPIP
FPLH
FPLC
ITHEL
ETAREF
FEFF
Namelist NLEFF
Gross thermal power (watts) absorbed by a reference
receiver (area AREF) before receiver and piping radiation
and convection losses.
Constraint: Data should be for same type receiver (;.e.,
external, cavity, etc.) as in REC namelist.
Default: REFTHP = 4.10~ 10' (watts) (IREC=0,3,4)
REFTHP = 2.10~ 10' (watts) (IREC=1,2)
(1II.G-3)
Reference receiver area (m2); for cavities, this
should be total aperture area.
Default: AREF = 2780.0 (m2) (IREC=0,3,4)
AREF = 761.0 (m') .(IREC=1,2 [I11 . G- 3)
Fraction of REFTHP transferred to receiver working
fluid after radiation and convection losses.
Default: REFRC = 0.83 (1II.G-3)
Reference pipe length (m) for calculating piping
insulation losses.
Default: REFLP = 170.0 (m) (1II.G-4)
Fraction of REFRC' REFTHP delivered to storage and
EPGS after piping losses.
Default: REFPIP = 0.99 (1II.G-4)
Factor multiplying tower height to give total hot
piping run in a single module.
Default: FPLH = 2.6 (III.G-4,V.A-7)
Factor multiplying tower height to give total cold piping
run in a single module (may be different from FPLH if
expansion allowance different).
Default: FPLC = 2.6 (V.A-7)
Parameter for design point thermal/electric conversion
efficiency:
= 0, efficiency assumed constant at all
design power levels, value
specified by ETAREF;
# 0, efficiency varies with design power
level as described in Figure 111-3.
Default: ITHEL r= 0 (1II.G-5,111.G-6)
Design point thermal/electric conversion efficiency;
constant at all power levels (only used when ITHEL = 0).
Default: ETAREF = 0.42 (III.G-5,III.H,V.A-11)
Fraction of design point efficiency describing average .
off-design operation. i
Default: FEFF = 0.90 (III.G-5,III.G-G,III.H)
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