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c 0 w V c LL .r a 0 0 0 0 0 s /s 0 0 0 m 0 00 0 h 0 co 0 In 0 4- 0 M 0 N 0 4 0 m VI tu .) 0 v, \ v, .) c 0 r m 0 VI c *C ? U 7 *C m . .-.I I W U U aJ L I cn LL .r 72
c) PreciDitable Water The precipitable water overhead (in mm) on the Ith calculational day is given by DH20(I) (IWEATH=l) or H20 (IWEATH=O, 2). This quantity is used only in the Allen insolation model (INSOL=3). 111.8-4. Sunshape-The image of the extraterrestrial sun is limb darkened; Le., the insolation decreases toward the edge. The size and shape of the solar intensity is further modified by the very small angle scattering in the earth’s atmo- sphere. In general, the size of the solar image increases as the total insolation decreases because of increased scattering. The shape of the solar image is important in its effects on the spillage and flux calculations. The sunshape models available in DELSOL are set by the choice of parameter NSUN (Namelist BASIC). a) NSUN = 0, Point Sun A point sun, while unrealistic, has been useful for debugging the field performance calculation and for studying the effects of heliostat size and errors on the images projected on the receiver. b) U J N = 1, Limb Darkened Sun This is one of the simpler models for a limb darkened sun described by Refer- ence 3: So (1.0 - 0.5138(r/R)4) (rR) where r 1= angle subtended between the center of the sun to some point toward the edge (R) The user specifies the intensity vs. angle in a circularly symmetric sunshape. There are NSUNPT pairs of values of intensity, SUNI, vs. angle from the center of the sun, SUNR. The angles are in ascending order and the first angle must be zero (i.e., the center of the sun). mxSUNI(r)dr gives the power from the sun within a differential circular ring from r to r+dr. The default in the code is the limb darkened model (NSUN = 1).
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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
Page 21 and 22: owing, blocking, atmospheric attenu
Page 23: The fourth major enhancement in DEL
Page 26 and 27: W- 26 S ? Jr RECEIVER NORMAL COORDI
Page 28 and 29: ZONE FlEL 180" Figure 11-3. Surroun
Page 30 and 31: 30 ZONE 60 Figure 11-4. Method of Z
Page 32 and 33: 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 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 84 and 85: Following the approach in the previ
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
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0 co I I I 0 co J 0 c\! c, 0 3 Ln 0
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w/2 x RWCAV W/2 x RWCAV IN (180. -
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S M ~ , = ~ solar F multiple for re
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nSTOR is determined from an assumed
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CTK,REF (CSTREF) = $9.70 x loG VTK,
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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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