A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...
A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...
A User's Manual for DELSOL3 - prod.sandia.gov - Sandia National ...
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Ai (AREF) = 2780.0 m2.<br />
Defaults <strong>for</strong> a cavity receiver are<br />
vI;C,~ (REFRC) = 0.83<br />
P:,,R (REFTHP) = 2.10 x lo8 watts<br />
Ai, (AREF) = 761.0 m2.<br />
III. C-4. Insulation Losses in Piping Runs-Only single module designs are<br />
considered, and the following two assumptions are made:<br />
1)<br />
2)<br />
The hot piping run can be expressed as some constant, tp~, times<br />
the tower height, so that the total length is:<br />
Lp = l p x ~ THT (1II.G - 13)<br />
t p should ~ include the ground run to storage and the electric<br />
generating subsystem (EPGS) plus any necessary expansion allowances.<br />
The default value is based on an advanced salt design with storage<br />
and EPGS within one THT of the base of the tower plus a 30% increase<br />
<strong>for</strong> expansion:<br />
lp,(FPLH) = 2.6<br />
The pipe diameter, Dp, scales directly with the square root of the<br />
flow rate, which is in turn directly proportional to the design<br />
thermal power delivered to the downcomer from the receiver. Refer-<br />
ring to the previous Section <strong>for</strong> nomenclature:<br />
DP = PP ( t7RC,R,DPPth,R)0’5<br />
where Pp = proportionality factor.<br />
(II1.G - 14)<br />
Piping losses are assumed to be proportional to the total pipe area. At the design<br />
point:<br />
PLOST,P = ~PLP(~DP)<br />
(1II.G - 15)<br />
where ap = proportionality factor. Combining Equations (1II.G-13), (1II.G-14),<br />
and (1II.G-15) and defining af> = ntrppp,<br />
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