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

THT
TOWL
TOWD
IREC
W
H
RRECL
IAUTOP
186
Namelist REC
“Tower height.” The elevation, in meters, of the
center of external receiver or cavity aperture
above the heliostat pivot point, not ground level.
Default: THT = 175.0 (m) (II.E,IV.C-S,V.A-4)
The shadow cast by the tower and receiver is modeled its
the shadow cast by a cylinder that is TOWL meters tall
measured above the heliostat pivot points) and has a
6 iameter of TOWD meters.
Default: TOWL = 175.0 (m)
TOWD = 10.0 (m) (III.E-2,IV.A-4)
Parameter specifying type of receiver:
= 0, vertical cylindrical external receiver;
= 1, cavity with aperture(s) of elliptical cross
section;
= 2, cavity with aperture(s) of rectangular cross
section.
= 3, elliptical shape flat plate receiver(s)
= 4, rectangular shape flat plate receiver(s)
Default: IREC = 0
(II.E,IV.C-3)
Diameter, in meters, of an external receiver. For flat
plates or cavities, W is twice the horizontal distance
from the center of the aperture or flat plate to the
tower centerline.
Default: W = 16.0 (m) (11. E,IV.C-3)
Height, in meters, of an external receiver.
Height of cavity heat absorbing surface. If
H = 16.0, defaults to l.lxRY (cavity).
Not needed for flat plates.
Default: H = 16.0 (m) (11. E ,IV .C-3)
H = l.lxRY [ ~ ~ ~ ~ ~ t ’ y )
Fraction of the incident power absorbed by the receiver
before radiation and convection losses, but after
receiver reflection loss:
RRECL = Powcsr iucirl(*ut -Power rc.fle.c fed
P,)wc*r irrridviit
Default: RRECL = 0.965 (1II.G-2)
Control parameter identifying aiming strategy:
= 0, single aim point at center of receiver;
= 1, code calculated time dependent 1-d “smart”
aiming strategy; heliostat images are spread
out along the “height” of the receiver or
aperture to reduce the peak flux and flux
gradients with no increase in spillage.