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

IROUND = 0
WM = 9.91 (m)
HM = 9.93 (m)
DENSMR = 0.970
RMIRL = 0.91
SIGAZ = O.O*
SIGEL = 0.00075
SIGSX = 0.0010
SIGSY = SIGTX = SIGTY = O.O*
1I.E. Tower and Receiver
ICANT = 1
NCANTX = 2
NCANTY = 8
RCANT = 12*6.00
XFOCUS = YFOCUS = 1.0
IFOCUS = I
XFOCAL = YFOCAL = 12*6.00
*See note on page 47.
DELSOL considers three types of receivers as illustrated in Figure 11-13: ex-
ternal cylinders, multiple aperture cavities, and multiple flat plates. Flat plate
receivers are specified in the same manner as cavity receivers. The optical tower
height, THT, is defined as the elevation of the middle of the external receiver,
cavity aperture, or flat plate above the Divot point of the heliostat. To get the
height above ground, the elevation above ground of the pivot point must be
added to THT. The optical tower height is used in all DELSOL calculations ex-
cept the tower capital cost calculation, which uses the height from the ground to
the bottom of a transition region between the tower and the receiver. Compo-
nent costing, including a description of the transition region, is discussed in Sec-
tion V.A-4. All references in DELSOL outputs to tower height refer to the optical
tower height, THT.
The size of external cylindrical receivers (IREC=O) is specified by the height,
H, and width or diameter, W. The apertures on cavity receivers are specified by
giving their dimensions, orientation, and displacement from the tower centerline.
For rectangular apertures (IREC=Z), the horizontal edge has a length RX and
the perpendicular edge has a length RY. For elliptical apertures (IREC=l), one
axis is horizontal with length RX and the other axis has a length RY. The orien-
tation of the apertures is specified by the r^ vector which is the outward surface
normal at the center of a surface stretched across the-aperture. It is assumed that
all apertures are oriented so that an extension of the f vectors will go through the
tower centerline at the same point. (See Figure 11-2.) 8, (RELV) is the polar an-
gle off; it equals 90" if the cavity aperture is vertical and is greater than 90" if
the cavity faces downward. pr (RAZM) is the azimuthal angle; pr = 180" if the
aperture faces North. The width W of the cavity structure is taken as twice the
horizontal distance from the center of the cavity aperture to the tower centerline.
50
I