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Following the approach in the previous Section for IRADFL=l, let qp,~p be the piping thermal efficiency at the design point, so that: (I1I.G - 17 In analogous fashion, the yearly average piping efficiency, ~P,AVG is calculated assuming that PLOST,~ is constant through the year: qP,AVG = ETOT,P - HOP x PLOST,P ETOT,P - HOP x abePHTHT(qRC,R,DPPth,R)o’5 -1- ETOT,P (1II.G - 18) where ETOT,~ = total energy delivered to piping per year (=~RC,R,AVGETOT,R), Hop = total number of hours of receiver (not plant operation). As with finding C~R in the previous Section, ab is based on a reference design for which a detailed calculation is available. Rearranging Equation (1II.G-17) and denoting the reference design values with a superscript O results in: Current default values are based on a salt design and PTh,R given above) : q$ (REFPIP) = 0.990 LOp (REFLP) = 170.0 m (1II.G - 19) III. G-5. Thermal/Electric Conversion Eficiency-There are two options for the design point thermal to electric conversion efficiency, ~TE,REF, identified by the user’s choice of the parameter ITHEL: 1) ITHEL = 0 ~TE,REF constant at all design point power levels; value specified by the user 2) ITHEL # 0 ~TE,REF varies with gross design point electrical output based on reported plant performance and designs (References 30-32) 84
t The fit for option (2) is plotted in Figure 111-3. For calculating total yearly electrical energy production for use in optimization, the yearly average thermal to electric conversion efficiency, ~TE,AV
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- SANDIA REPORT SAND86-8018 Unlimit
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SAND 86-8018 Unlimited Release Prin
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' The computer code which this repo
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I. Introduction CONTENTS A. Differe
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1. More Accurate Images from Canted
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VII. Comparison of DELSOL, MIRVAL,
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111-1 Insolation Models 111-2 Atmos
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A USER’S MANUAL FOR DELSOLS: A CO
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owing, blocking, atmospheric attenu
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The fourth major enhancement in DEL
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W- 26 S ? Jr RECEIVER NORMAL COORDI
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ZONE FlEL 180" Figure 11-3. Surroun
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30 ZONE 60 Figure 11-4. Method of Z
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Figure 11-5. North-only Field (INOR
Page 34 and 35: 34 N' Figure 11-6. Code Defined Fie
Page 36 and 37: 36 Figure 11-7. Schematic Diagram o
Page 38 and 39: -SLEW (1)- Figure 11-8. Example of
Page 40 and 41: Figure 11-9. Radial Stagger Arrange
Page 42 and 43: Note that when IDENS=l or 2 the azi
Page 44 and 45: J1.D. Heliostats Either rectangular
Page 46 and 47: Given that heliostats will be mass
Page 48 and 49: (A) FLAT REFLECTED RAY FROM (B) FOC
Page 50 and 51: IROUND = 0 WM = 9.91 (m) HM = 9.93
Page 52 and 53: That is, the aperture is always loc
Page 54 and 55: controlled by the IAUTOP parameter
Page 56 and 57: only be used with rectangular cavit
Page 58 and 59: grid of points on the DELSOL assume
Page 60 and 61: W E Figure 11-17. Flux Points on a
Page 62 and 63: flux point grid defined during syst
Page 64 and 65: To see whether this problem is occu
Page 66 and 67: Cal cul ati onal Day 1 2 3 4 5 Tabl
Page 68 and 69: 1II.B-I. Position 01 the Sun-The su
Page 70 and 71: where SO is given by Equation (1II.
Page 72 and 73: c 0 w V c LL .r a 0 0 0 0 0 s /s 0
Page 74 and 75: 1II.C. Field Performance Calculatio
Page 76 and 77: 1II.F. Flux Density and SDillane Th
Page 78 and 79: III. G-1. Atmospheric Attenuation:
Page 80 and 81: eceiver) or with aperture area (cav
Page 82 and 83: In other words, PLOST,R is the same
Page 86 and 87: 86 - - - LLLLLL www CLee o m 4 I i
Page 88 and 89: This approximate method of calculat
Page 90 and 91: RECEIVER STARTUP WEATHER SUN PARASI
Page 92 and 93: 111.1. Relationship Between Perform
Page 95 and 96: IV. System Optimization Calculation
Page 97 and 98: power and annual energy. Section 11
Page 99 and 100: , . IV.A-7. Calculation of Annual E
Page 101 and 102: . production. When each design powe
Page 103 and 104: large enough fraction of total capi
Page 105 and 106: _____ Table IV-2. Design Parameters
Page 107 and 108: DELSOL will examine NUMHTW (520) eq
Page 109 and 110: The final step of cavity receiver o
Page 111 and 112: . furthermore, that the assumed tur
Page 113 and 114: point in the NMXFLX(1) array (I=l,
Page 115 and 116: , flux level. DELSOL determines the
Page 117 and 118: optimum for any power level is 13.
Page 119 and 120: I V. System Costs and Economics Whi
Page 121 and 122: for meteorological equipment. The d
Page 123 and 124: 0 co I I I 0 co J 0 c\! c, 0 3 Ln 0
Page 125 and 126: w/2 x RWCAV W/2 x RWCAV IN (180. -
Page 127 and 128: S M ~ , = ~ solar F multiple for re
Page 129 and 130: nSTOR is determined from an assumed
Page 131 and 132: CTK,REF (CSTREF) = $9.70 x loG VTK,
Page 133 and 134: XHE,A = scaling exponent. ni is cal
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. CCFIXED = 2.OE6 +'0.14 x DCC + 0.
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(V.B - 6) The discount rate rDIS is
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VI. Program Flow DELSOL can be used
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.I c to reach a certain design powe
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an optimum storage size based on en
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I Read i n N + K t x ] ITAPE=O or 1
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Read in System Definition from File
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. TABLE VI-2 OUTPIJT FROM OPTIMIZAT
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) Power level specific for detailed
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V1.B. DescriDtion of Subroutines in
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C cy c: C C
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L C c C c C c: C c C C c C C C c: c
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C C C C C C C C C C C C C C C C C C
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At the time of the comparisons MIRV
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164 n m W * ? 0 F F 0 ( z W /M W) X
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166 Phase 1; CDRL Item 2, Pilot Pla
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168 43. Vittitoe, C. N. et al., “
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since the values have been already
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Title Card $BASIC$ $FIELD$ $HSTAT$
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IPROB NYEAR HRDEL UDAY UTIME NUAZ N
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TDESP PLAT ALT INSOL SOLCON IWEATH
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REFTIM REFSOL ASTART IATM ATMl ATM2
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IHPR NLAND XTOWER YTOWER (I= 1 ,NLA
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182 1 1-40 2 1-10 11-20 3 1-10 11-2
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SIGTX SIGTY ICANT NCANTX NCANTY HCA
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THT TOWL TOWD IREC W H RRECL IAUTOP
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For cavities or flat plates, the fo
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NXFLX FAZMIN FAZMAX 190 AZMF (North
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NMXFLXY) identifies the exact point
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REFPRL FSP FEP EFFSTR PF SMULT IP H
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IHOPT NUMTHT THTST THTEND NUMREC WS
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SMULT IPLFL(1) (I=l ,NUMOPT) IPROPT
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CH CL CWR CWDR CWDA ITHT CTOWl CTOW
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ICHE CHEREF PHEREF XHEP APHREF PPHR
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CKNREF PKNREF XKN 204 Sodium-to-sal
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TC TR FDEBT RDEBT ROE IDEP NDEP NYO
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The next set of cards is read at th
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value of insolation from the specif
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For optimizing cavity depth, the IO
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For the final detailed performance
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from that specified during the opti
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Sample Problem 4 - User Defined Fie
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GLOSSARY Absorber: The portion of t
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Heat Exchanger: A component in whic
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Receiver System Efficiency: The rat
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Variable AEVMAX AEVREF AFDC ALP(I)
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Variable H H20 HCANT HM HPANL HRDEL
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Variable PARL7,PARLI) PARL9,PARLlO
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Variable W WEATH WEND WM WPANL WST
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Analysis Review and Critique 6503 8
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Martin Marietta Aerospace P.O. Box
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Stone and Webster Engineering Corpo
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