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

achieved for that tower and receiver. Capital cost components can be grouped
according to that point in the field buildup at which they are calculated. The
line grouping of the costs in Equation (V.A-1) is to clarify those costs which are
similarly calculated. The tower and receiver costs (CCTOW, CCREC) are fixed by
the values of tower height and receiver dimensions for each pass through the field
buildup subroutine MAX. Heliostat, land, and wiring costs (CCHEL, CCLAND,
and CCWI-) are updated with each zone added in the field buildup. The power
or system size related costs of piping, pumping, storage, heat exchangers, and
EPGS (CCPIPE, ~CSTORAGE, ~CHTXSTOR, ~CHTXCHG, and CCEPGS, respectively)
are calculated as each design level is reached. It is assumed that certain
fixed costs (CCFIXEJJ, e.g., master control, administration buildings, roads, etc.,
are common to all the systems. Factors for distributable and indirect costs (DI)
to cover architectural and engineering services, contractor fees, and temporary facilities,
for contingencies (CONT), and for spare parts (SPTS) are added to the
basic capital cost of the major component subsystems. Values are expressed as a
fraction of the total direct costs. Current default values are based on Nth plant
design and construction:
DI (EXT) = 0.16
CONT (CONT) = 0.12
SPTS (SPTS) = 0.01
The individual capital cost models are described below. User supplied cost
parameters should include materials, fabrication, and field installation, and sub-
contractor fees and contingencies, if any. The default values are consistent with
the near-term 1984 five year plan cost goals or with 1984 current capabilities
(References 34 and 35). Should the user desire to set any subsystem cost to zero
to eliminate its contribution to the system design, then the input cost parameters,
not the size or scaling parameters, should be set to zero.
V.A-I. Heliostats-Heliostat prices quoted by contractors usually include field
wiring and installation. Therefore, the value CH input by the user should also in-
clude these costs. DELSOL will subtract the wiring costs as described in Section
V.A-3 to determine the separate cost of heliostats:
= 'H Tmirror area
zones
x total mirror area + $1E6 - CWIR.E
( = CH zone mirror area + $lE6 - CWIRE
(V.A - 2)
Zone mirror area is determined from the zone density and land area. The con-
stant million dollar addition is to account for a beam characterization system and
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