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

The pipe diameter is assumed to scale with the square root of the flow rate,
which is in turn proportional to the product of the solar multiple times the design
point thermal power delivered to the process:
-=( D SM X Pth
(V.A - 14)
DREF SMPIPE,REF x Pth,PIPE,REF
Default values are based on a molten salt design in which hot and cold runs are
the same length (allowing the total reference cost to be put in either CHOT,~F or
CCOLD,REF):
t p (FPLH) ~ = 2.6
tpc (FPLC) = 2.6
CHOT,REF (CHPREF) = $2.84 x lo4
CCOLD,REF (CCPREF) = $O.O/m
XPIPE (XPI) = 1.06 (Reference 31)
V.A-8. Storage-In DELSOL the cost of storage is based on a reference con-
tainment cost and and size, and if the storage size exceeds a tank size limit then
two smaller tanks of equal size are used instead. The equation for storage cost is
CCSTORAGE
( +
= ~STOR(~TK,REF
nEMPTY
vkK
+ CMED,REF
VTK,REF
) ( vkK )''=
STO OR VTK,REF
where nSTOR = number of storage tanks, or hot/cold pairs
nEMpTY = number of spare tanks (for drainage or backup)
CTK,REF = reference storage media containment cost (including
hot and cold tank pair, if so designed, insulation,
foundation, valving, etc.) ($)
C~D,REF = reference storage media cost ($)
VkK = tank volume (m3)
VTK,REF = reference tank volume (m3)
XST = scaling exponent for tanks.
128
(V.A - 15)