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Sample Problem 4 - User Defined Field with Individual Heliostat Coordinates Problem Statement The example of the CESA-1 system discussed in Chapter VI1 and Reference 43 is used here to illustrate the input and output of the IUSERF=3 option in $FIELD$. The performance and a flux map on winter solstice at 10 a.m. are desired. The insolation is 0.7 kw/m2, and a square wave sun is to be assumed. Other information comes from Reference 43. Input Cards SAMPLE PROBLEM 4 $BASIC IPROB-2, UDAY=355., UTIME=-2.. IPRINT=2. PLAT137.099. INSOL=2. SOLCON-0.7. NSUN=2. IATM=2. ATM1=0.679.ATM2=11.76,ATM3=-1.97. ATM4=O. $ SFIELO IUSERF=3 S SHSTAT WM=6.25. HM=8.3. ICPANL-1. WPANL=P.B. HPANL=1.25. HXCANT=5*-1.675. 5*1.675. HYCANT=2.525. 1.263. 0.,-1.263.-2.525,2.525,1.263,0.,-~.263,-2.525, DENSMR=0.92063. RMIRL=0.85. SIGAZ-0.. SIGEL=O., SIGSX=O., SIGSY=O., SIGTX=0.0033. SIGTY=0.0033, ICANT=3. NCANTY=5. ISB=l $ $REC THT~56.345. TOWL=67.345. TOWD=11., IREC=4, W=10.8, RX.3.4. RY=3.4. IAUTOP-0. RELVz111.8 $ $NLFLUX IFLX=l. IFXOUT(1,1)=1. IFLAUT=4. NXFLX-11. FAZMIN=-1.7. FAZMAX=I.7. NYFLX=Il. FZMINZ-1.7, FZMAX-1.7 8 ONLEFF $ SPANISH FIELD 282 1 0.0 10.0 20.0 30.0 -30.0 -20.0 - 10.0 2 5.0 16 7 45. 45. 45. 45. 45. 45. 45. 10 57. -26.56 259. -8.83 259. BREC W=-IOO. $ Analvsis of Input 85.0 85.0 85.0 85.0 85.0 85.0 85.0 85.0 255.0 255.0 The detailed input describing the site location, sunshape, atmospheric attenuation ($BASIC$), the heliostat ($HSTAT$), and tower and receiver ($REC$) are consistent with the system definition of Reference 43. To calculate the performance and flux at a particular time, IPROB=2, UDAY, and UTIME are specified in $BASIC$. IPRINT is set to 2 in order to get the single time results printed. IUSERF=3 in $FIELD$ sets up the code to do a run on a field with the individual heliostat coordinates defined. The values defined in $NLFLUX$ are chosen for a finely gridded flux map. After $NLEFF$ comes the individual heliostat input in the format described in the $FIELD$ section of Appendix A. Only the first few values are shown here. For each heliostat, the focal length must be defined, or the heliostat will be defocused. 2 18
Comments on OutDut The output is similar to those of the other sample problems up to the zoning summary, which is now simply a flag that the individual coordinate option is em- ployed. The performance summary of the heliostats is then printed. Total field performance, a waterfall trace at the specified time, and a flux map follow.
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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
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34 N' Figure 11-6. Code Defined Fie
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36 Figure 11-7. Schematic Diagram o
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-SLEW (1)- Figure 11-8. Example of
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Figure 11-9. Radial Stagger Arrange
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Note that when IDENS=l or 2 the azi
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J1.D. Heliostats Either rectangular
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Given that heliostats will be mass
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(A) FLAT REFLECTED RAY FROM (B) FOC
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IROUND = 0 WM = 9.91 (m) HM = 9.93
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That is, the aperture is always loc
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controlled by the IAUTOP parameter
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only be used with rectangular cavit
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grid of points on the DELSOL assume
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W E Figure 11-17. Flux Points on a
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flux point grid defined during syst
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To see whether this problem is occu
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Cal cul ati onal Day 1 2 3 4 5 Tabl
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1II.B-I. Position 01 the Sun-The su
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where SO is given by Equation (1II.
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c 0 w V c LL .r a 0 0 0 0 0 s /s 0
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1II.C. Field Performance Calculatio
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1II.F. Flux Density and SDillane Th
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III. G-1. Atmospheric Attenuation:
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eceiver) or with aperture area (cav
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In other words, PLOST,R is the same
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Following the approach in the previ
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86 - - - LLLLLL www CLee o m 4 I i
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This approximate method of calculat
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RECEIVER STARTUP WEATHER SUN PARASI
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111.1. Relationship Between Perform
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IV. System Optimization Calculation
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power and annual energy. Section 11
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, . IV.A-7. Calculation of Annual E
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. production. When each design powe
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large enough fraction of total capi
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_____ Table IV-2. Design Parameters
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DELSOL will examine NUMHTW (520) eq
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The final step of cavity receiver o
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. furthermore, that the assumed tur
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point in the NMXFLX(1) array (I=l,
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, flux level. DELSOL determines the
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optimum for any power level is 13.
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I V. System Costs and Economics Whi
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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
Page 168 and 169: 168 43. Vittitoe, C. N. et al., “
Page 170 and 171: since the values have been already
Page 172 and 173: Title Card $BASIC$ $FIELD$ $HSTAT$
Page 174 and 175: IPROB NYEAR HRDEL UDAY UTIME NUAZ N
Page 176 and 177: TDESP PLAT ALT INSOL SOLCON IWEATH
Page 178 and 179: REFTIM REFSOL ASTART IATM ATMl ATM2
Page 180 and 181: IHPR NLAND XTOWER YTOWER (I= 1 ,NLA
Page 182 and 183: 182 1 1-40 2 1-10 11-20 3 1-10 11-2
Page 184 and 185: SIGTX SIGTY ICANT NCANTX NCANTY HCA
Page 186 and 187: THT TOWL TOWD IREC W H RRECL IAUTOP
Page 188 and 189: For cavities or flat plates, the fo
Page 190 and 191: NXFLX FAZMIN FAZMAX 190 AZMF (North
Page 192 and 193: NMXFLXY) identifies the exact point
Page 194 and 195: REFPRL FSP FEP EFFSTR PF SMULT IP H
Page 196 and 197: IHOPT NUMTHT THTST THTEND NUMREC WS
Page 198 and 199: SMULT IPLFL(1) (I=l ,NUMOPT) IPROPT
Page 200 and 201: CH CL CWR CWDR CWDA ITHT CTOWl CTOW
Page 202 and 203: ICHE CHEREF PHEREF XHEP APHREF PPHR
Page 204 and 205: CKNREF PKNREF XKN 204 Sodium-to-sal
Page 206 and 207: TC TR FDEBT RDEBT ROE IDEP NDEP NYO
Page 208 and 209: The next set of cards is read at th
Page 210 and 211: value of insolation from the specif
Page 212 and 213: For optimizing cavity depth, the IO
Page 214 and 215: For the final detailed performance
Page 216 and 217: from that specified during the opti
Page 221 and 222: GLOSSARY Absorber: The portion of t
Page 223 and 224: Heat Exchanger: A component in whic
Page 225 and 226: Receiver System Efficiency: The rat
Page 227 and 228: Variable AEVMAX AEVREF AFDC ALP(I)
Page 229 and 230: Variable H H20 HCANT HM HPANL HRDEL
Page 231 and 232: Variable PARL7,PARLI) PARL9,PARLlO
Page 233 and 234: Variable W WEATH WEND WM WPANL WST
Page 235 and 236: Analysis Review and Critique 6503 8
Page 237 and 238: Martin Marietta Aerospace P.O. Box
Page 239: Stone and Webster Engineering Corpo
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