| 6 |
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* 1 Avenue Eugene Freyssinet, Saint-Quentin-Yvelines, France |
| 7 |
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*/ |
| 8 |
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+ |
#define _USE_MATH_DEFINES |
| 10 |
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#include <stdio.h> |
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#include <string.h> |
| 12 |
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#include <math.h> |
| 56 |
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|
| 57 |
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|
| 58 |
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|
| 59 |
< |
/* Perez sky parametrization : epsilon and delta calculations from the direct and diffuse irradiances */ |
| 59 |
> |
/* Perez sky parametrization: epsilon and delta calculations from the direct and diffuse irradiances */ |
| 60 |
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double sky_brightness(); |
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double sky_clearness(); |
| 62 |
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|
| 89 |
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void check_sun_position(); |
| 90 |
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void computesky(); |
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void printhead(int ac, char** av); |
| 92 |
< |
void userror(char* msg); |
| 92 |
> |
void usage_error(char* msg); |
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void printsky(); |
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|
| 95 |
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FILE * frlibopen(char* fname); |
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double get_eccentricity(); |
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double air_mass(); |
| 100 |
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|
| 101 |
< |
double solar_sunset(); |
| 102 |
< |
double solar_sunrise(); |
| 101 |
> |
double solar_sunset(int month, int day); |
| 102 |
> |
double solar_sunrise(int month, int day); |
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double stadj(); |
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int jdate(int month, int day); |
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|
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|
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– |
|
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/* sun calculation constants */ |
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extern double s_latitude; |
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extern double s_longitude; |
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|
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const double AU = 149597890E3; |
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const double solar_constant_e = 1367; /* solar constant W/m^2 */ |
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< |
const double solar_constant_l = 127.5; /* solar constant klux */ |
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> |
const double solar_constant_l = 127500; /* solar constant lux */ |
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|
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const double half_sun_angle = 0.2665; |
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const double half_direct_angle = 2.85; |
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|
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< |
const double skyclearinf = 1.0; /* limitations for the variation of the Perez parameters */ |
| 120 |
< |
const double skyclearsup = 12.1; |
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> |
const double skyclearinf = 1.0; /* limitations for the variation of the Perez parameters */ |
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> |
const double skyclearsup = 12.01; |
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const double skybriginf = 0.01; |
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const double skybrigsup = 0.6; |
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|
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char *progname; |
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char errmsg[128]; |
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|
| 171 |
+ |
double st; |
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– |
|
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int main(int argc, char** argv) |
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{ |
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int i; |
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return 0; |
| 182 |
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} |
| 183 |
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if (argc < 4) |
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< |
userror("arg count"); |
| 184 |
> |
usage_error("arg count"); |
| 185 |
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if (!strcmp(argv[1], "-ang")) { |
| 186 |
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altitude = atof(argv[2]) * (M_PI/180); |
| 187 |
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azimuth = atof(argv[3]) * (M_PI/180); |
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} else { |
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month = atoi(argv[1]); |
| 191 |
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if (month < 1 || month > 12) |
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< |
userror("bad month"); |
| 192 |
> |
usage_error("bad month"); |
| 193 |
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day = atoi(argv[2]); |
| 194 |
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if (day < 1 || day > 31) |
| 195 |
< |
userror("bad day"); |
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> |
usage_error("bad day"); |
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hour = atof(argv[3]); |
| 197 |
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if (hour < 0 || hour >= 24) |
| 198 |
< |
userror("bad hour"); |
| 198 |
> |
usage_error("bad hour"); |
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|
tsolar = argv[3][0] == '+'; |
| 200 |
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} |
| 201 |
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for (i = 4; i < argc; i++) |
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break; |
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|
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case 'O': |
| 239 |
< |
output = atof(argv[++i]); /*define the unit of the output of the program : |
| 240 |
< |
sky and sun luminance/radiance (0==W visible, 1==W solar radiation, 2==lm) */ |
| 239 |
> |
output = atof(argv[++i]); /*define the unit of the output of the program: |
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> |
sky and sun luminance/radiance |
| 241 |
> |
(0==W visible, 1==W solar radiation, 2==lm) */ |
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break; |
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|
| 244 |
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case 'P': |
| 270 |
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globalirradiance = atof(argv[++i]); |
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break; |
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|
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– |
/* |
| 273 |
– |
case 'l': |
| 274 |
– |
sunaltitude_border = atof(argv[++i]); |
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– |
break; |
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– |
*/ |
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– |
|
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case 'i': |
| 274 |
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timeinterval = atof(argv[++i]); |
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break; |
| 277 |
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|
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default: |
| 279 |
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sprintf(errmsg, "unknown option: %s", argv[i]); |
| 280 |
< |
userror(errmsg); |
| 280 |
> |
usage_error(errmsg); |
| 281 |
|
} |
| 282 |
|
else |
| 283 |
< |
userror("bad option"); |
| 283 |
> |
usage_error("bad option"); |
| 284 |
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|
| 285 |
< |
if (fabs(s_meridian-s_longitude) > 30*M_PI/180) |
| 286 |
< |
fprintf(stderr, |
| 292 |
< |
"%s: warning: %.1f hours btwn. standard meridian and longitude\n", |
| 285 |
> |
if (month && !tsolar && fabs(s_meridian-s_longitude) > 45*M_PI/180) |
| 286 |
> |
fprintf(stderr,"%s: warning: %.1f hours btwn. standard meridian and longitude\n", |
| 287 |
|
progname, (s_longitude-s_meridian)*12/M_PI); |
| 288 |
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|
| 289 |
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|
| 290 |
|
/* dynamic memory allocation for the pointers */ |
| 297 |
– |
|
| 291 |
|
if ( (c_perez = calloc(5, sizeof(double))) == NULL ) |
| 292 |
< |
{ |
| 300 |
< |
fprintf(stderr,"Out of memory error in function main"); |
| 301 |
< |
return 1; |
| 302 |
< |
} |
| 292 |
> |
{ fprintf(stderr,"Out of memory error in function main"); return 1; } |
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|
| 294 |
+ |
|
| 295 |
|
printhead(argc, argv); |
| 296 |
|
computesky(); |
| 306 |
– |
|
| 307 |
– |
if(*(c_perez+1)>0) |
| 308 |
– |
{ |
| 309 |
– |
fprintf(stderr, "Warning: positive Perez parameter B (= %lf), printing error sky\n",*(c_perez+1)); |
| 310 |
– |
print_error_sky(); |
| 311 |
– |
exit(1); |
| 312 |
– |
} |
| 313 |
– |
|
| 297 |
|
printsky(); |
| 298 |
|
return 0; |
| 299 |
+ |
|
| 300 |
|
} |
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| 322 |
– |
|
| 323 |
– |
|
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– |
|
| 306 |
|
void computesky() |
| 307 |
|
{ |
| 308 |
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|
| 319 |
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|
| 320 |
|
if (month) { /* from date and time */ |
| 321 |
|
int jd; |
| 322 |
< |
double sd, st; |
| 322 |
> |
double sd; |
| 323 |
|
|
| 324 |
|
jd = jdate(month, day); /* Julian date */ |
| 325 |
|
sd = sdec(jd); /* solar declination */ |
| 327 |
|
st = hour; |
| 328 |
|
else |
| 329 |
|
st = hour + stadj(jd); |
| 349 |
– |
|
| 330 |
|
|
| 351 |
– |
if(st<solar_sunrise(month,day) || st>solar_sunset(month,day)) { |
| 352 |
– |
print_error_sky(); |
| 353 |
– |
exit(1); |
| 354 |
– |
} |
| 355 |
– |
|
| 331 |
|
|
| 332 |
|
if(timeinterval) { |
| 333 |
|
|
| 335 |
|
fprintf(stderr, "time interval negative\n"); |
| 336 |
|
exit(1); |
| 337 |
|
} |
| 338 |
< |
|
| 339 |
< |
if(fabs(solar_sunrise(month,day)-st)<timeinterval/60) { |
| 340 |
< |
|
| 341 |
< |
fprintf(stderr, "Solar position corrected at %d %d %.3f\n",month,day,hour); |
| 342 |
< |
st= (st+timeinterval/120+solar_sunrise(month,day))/2; |
| 338 |
> |
|
| 339 |
> |
if(fabs(solar_sunrise(month,day)-st)<=timeinterval/120) { |
| 340 |
> |
st= (st+timeinterval/120+solar_sunrise(month,day))/2; |
| 341 |
> |
if(suppress_warnings==0) |
| 342 |
> |
{ fprintf(stderr, "Solar position corrected at time step %d %d %.3f\n",month,day,hour); } |
| 343 |
|
} |
| 344 |
|
|
| 345 |
< |
if(fabs(solar_sunset(month,day)-st)<timeinterval/60) { |
| 346 |
< |
fprintf(stderr, "Solar position corrected at %d %d %.3f\n",month,day,hour); |
| 347 |
< |
st= (st-timeinterval/120+solar_sunset(month,day))/2; |
| 345 |
> |
if(fabs(solar_sunset(month,day)-st)<timeinterval/120) { |
| 346 |
> |
st= (st-timeinterval/120+solar_sunset(month,day))/2; |
| 347 |
> |
if(suppress_warnings==0) |
| 348 |
> |
{ fprintf(stderr, "Solar position corrected at time step %d %d %.3f\n",month,day,hour); } |
| 349 |
|
} |
| 350 |
+ |
|
| 351 |
+ |
if((st<solar_sunrise(month,day)-timeinterval/120) || (st>solar_sunset(month,day)+timeinterval/120)) { |
| 352 |
+ |
if(suppress_warnings==0) |
| 353 |
+ |
{ fprintf(stderr, "Warning: sun position too low, printing error sky at %d %d %.3f\n",month,day,hour); } |
| 354 |
+ |
altitude = salt(sd, st); |
| 355 |
+ |
azimuth = sazi(sd, st); |
| 356 |
+ |
print_error_sky(); |
| 357 |
+ |
exit(0); |
| 358 |
+ |
} |
| 359 |
|
} |
| 360 |
+ |
else |
| 361 |
|
|
| 362 |
+ |
if(st<solar_sunrise(month,day) || st>solar_sunset(month,day)) { |
| 363 |
+ |
if(suppress_warnings==0) |
| 364 |
+ |
{ fprintf(stderr, "Warning: sun altitude below zero at time step %i %i %.2f, printing error sky\n",month,day,hour); } |
| 365 |
+ |
altitude = salt(sd, st); |
| 366 |
+ |
azimuth = sazi(sd, st); |
| 367 |
+ |
print_error_sky(); |
| 368 |
+ |
exit(0); |
| 369 |
+ |
} |
| 370 |
|
|
| 371 |
|
altitude = salt(sd, st); |
| 372 |
|
azimuth = sazi(sd, st); |
| 378 |
|
|
| 379 |
|
|
| 380 |
|
|
| 387 |
– |
/* if loop for the -l option. W.Sprenger (01/2013) */ |
| 388 |
– |
/* |
| 389 |
– |
if (altitude*180/M_PI < sunaltitude_border) { |
| 390 |
– |
|
| 391 |
– |
if (suppress_warnings==0) { |
| 392 |
– |
fprintf(stderr, "Warning: sun altitude (%.3f degrees) below the border (%.3f degrees)\n",altitude*180/M_PI,sunaltitude_border); |
| 393 |
– |
} |
| 394 |
– |
print_error_sky(); |
| 395 |
– |
exit(1); |
| 396 |
– |
} |
| 397 |
– |
*/ |
| 398 |
– |
|
| 381 |
|
|
| 382 |
|
if (!cloudy && altitude > 87.*M_PI/180.) { |
| 383 |
|
|
| 389 |
|
altitude = 87.*M_PI/180.; |
| 390 |
|
} |
| 391 |
|
|
| 392 |
+ |
|
| 393 |
+ |
|
| 394 |
|
sundir[0] = -sin(azimuth)*cos(altitude); |
| 395 |
|
sundir[1] = -cos(azimuth)*cos(altitude); |
| 396 |
|
sundir[2] = sin(altitude); |
| 398 |
|
|
| 399 |
|
/* calculation for the new functions */ |
| 400 |
|
sunzenith = 90 - altitude*180/M_PI; |
| 401 |
< |
|
| 418 |
< |
|
| 401 |
> |
|
| 402 |
|
|
| 403 |
|
/* compute the inputs for the calculation of the light distribution over the sky*/ |
| 404 |
|
if (input==0) /* P */ |
| 422 |
|
check_irradiances(); |
| 423 |
|
skybrightness = sky_brightness(); |
| 424 |
|
skyclearness = sky_clearness(); |
| 425 |
+ |
|
| 426 |
|
check_parametrization(); |
| 427 |
< |
|
| 427 |
> |
|
| 428 |
|
if (output==0 || output==2) |
| 429 |
|
{ |
| 430 |
|
diffuseilluminance = diffuseirradiance*glob_h_diffuse_effi_PEREZ();/*diffuse horizontal illuminance*/ |
| 448 |
|
if (altitude<=0) |
| 449 |
|
{ |
| 450 |
|
if (suppress_warnings==0) |
| 451 |
< |
fprintf(stderr, "Warning: solar zenith angle larger than 90 degrees; using zero irradiance to proceed\n"); |
| 451 |
> |
fprintf(stderr, "Warning: sun altitude < 0, proceed with irradiance values of zero\n"); |
| 452 |
|
directirradiance = 0; |
| 453 |
|
diffuseirradiance = 0; |
| 454 |
|
} else { |
| 488 |
|
{ |
| 489 |
|
if (suppress_warnings==0) |
| 490 |
|
fprintf(stderr, "Warning: global irradiance is higher than the time-dependent solar constant s0\n"); |
| 507 |
– |
|
| 491 |
|
globalirradiance=erbs_s0*0.999; |
| 492 |
|
} |
| 493 |
|
|
| 500 |
|
directirradiance=globalirradiance-diffuseirradiance; |
| 501 |
|
|
| 502 |
|
printf("# erbs_s0, erbs_kt, irr_dir_h, irr_diff: %.3f %.3f %.3f %.3f\n", erbs_s0, erbs_kt, directirradiance, diffuseirradiance); |
| 503 |
< |
printf("# WARNING: the -E option is only recommended for a rough estimation!"); |
| 503 |
> |
printf("# WARNING: the -E option is only recommended for a rough estimation!\n"); |
| 504 |
|
|
| 505 |
|
directirradiance=directirradiance/sin(altitude); |
| 506 |
|
|
| 523 |
|
|
| 524 |
|
|
| 525 |
|
|
| 526 |
< |
else {fprintf(stderr,"error at the input arguments"); exit(1);} |
| 526 |
> |
else { fprintf(stderr,"error at the input arguments"); exit(1); } |
| 527 |
|
|
| 528 |
|
|
| 529 |
|
|
| 545 |
|
|
| 546 |
|
|
| 547 |
|
|
| 565 |
– |
|
| 566 |
– |
|
| 548 |
|
/*calculation of the modelled luminance */ |
| 549 |
|
for (j=0;j<145;j++) |
| 550 |
|
{ |
| 590 |
|
else |
| 591 |
|
solarradiance = directilluminance/(2*M_PI*(1-cos(half_sun_angle*M_PI/180))); |
| 592 |
|
|
| 612 |
– |
|
| 593 |
|
|
| 594 |
|
|
| 595 |
< |
/* Compute the ground radiance */ |
| 596 |
< |
zenithbr=calc_rel_lum_perez(0.0,radians(sunzenith),radians(sunzenith),skyclearness,skybrightness,coeff_perez); |
| 597 |
< |
zenithbr*=diffnormalization; |
| 595 |
> |
/* Compute the ground radiance */ |
| 596 |
> |
zenithbr=calc_rel_lum_perez(0.0,radians(sunzenith),radians(sunzenith),skyclearness,skybrightness,coeff_perez); |
| 597 |
> |
zenithbr*=diffnormalization; |
| 598 |
|
|
| 599 |
< |
if (skyclearness==1) |
| 599 |
> |
if (skyclearness==1) |
| 600 |
|
normfactor = 0.777778; |
| 601 |
|
|
| 602 |
< |
if (skyclearness>=6) |
| 602 |
> |
if (skyclearness>=6) |
| 603 |
|
{ |
| 604 |
|
F2 = 0.274*(0.91 + 10.0*exp(-3.0*(M_PI/2.0-altitude)) + 0.45*sundir[2]*sundir[2]); |
| 605 |
|
normfactor = normsc()/F2/M_PI; |
| 606 |
|
} |
| 607 |
|
|
| 608 |
< |
if ( (skyclearness>1) && (skyclearness<6) ) |
| 608 |
> |
if ( (skyclearness>1) && (skyclearness<6) ) |
| 609 |
|
{ |
| 610 |
|
S_INTER=1; |
| 611 |
|
F2 = (2.739 + .9891*sin(.3119+2.6*altitude)) * exp(-(M_PI/2.0-altitude)*(.4441+1.48*altitude)); |
| 612 |
|
normfactor = normsc()/F2/M_PI; |
| 613 |
|
} |
| 614 |
|
|
| 615 |
< |
groundbr = zenithbr*normfactor; |
| 615 |
> |
groundbr = zenithbr*normfactor; |
| 616 |
|
|
| 617 |
< |
if (dosun&&(skyclearness>1)) |
| 617 |
> |
if (dosun&&(skyclearness>1)) |
| 618 |
|
groundbr += 6.8e-5/M_PI*solarradiance*sundir[2]; |
| 619 |
|
|
| 620 |
< |
groundbr *= gprefl; |
| 620 |
> |
groundbr *= gprefl; |
| 621 |
|
|
| 622 |
|
|
| 623 |
+ |
|
| 624 |
+ |
if(*(c_perez+1)>0) |
| 625 |
+ |
{ |
| 626 |
+ |
if(suppress_warnings==0) |
| 627 |
+ |
{ fprintf(stderr, "Warning: positive Perez parameter B (= %lf), printing error sky\n",*(c_perez+1));} |
| 628 |
+ |
print_error_sky(); |
| 629 |
+ |
exit(0); |
| 630 |
+ |
} |
| 631 |
|
|
| 632 |
+ |
|
| 633 |
|
return; |
| 634 |
|
} |
| 635 |
|
|
| 636 |
|
|
| 637 |
|
|
| 638 |
|
|
| 650 |
– |
void print_error_sky() |
| 651 |
– |
{ |
| 652 |
– |
sundir[0] = -sin(azimuth)*cos(altitude); |
| 653 |
– |
sundir[1] = -cos(azimuth)*cos(altitude); |
| 654 |
– |
sundir[2] = sin(altitude); |
| 655 |
– |
|
| 656 |
– |
printf("\nvoid brightfunc skyfunc\n"); |
| 657 |
– |
printf("2 skybright perezlum.cal\n"); |
| 658 |
– |
printf("0\n"); |
| 659 |
– |
printf("10 0.00 0.00 0.000 0.000 0.000 0.000 0.000 %f %f %f \n", sundir[0], sundir[1], sundir[2]); |
| 660 |
– |
} |
| 661 |
– |
|
| 639 |
|
|
| 663 |
– |
|
| 664 |
– |
|
| 665 |
– |
|
| 666 |
– |
|
| 667 |
– |
|
| 640 |
|
double solar_sunset(int month,int day) |
| 641 |
|
{ |
| 642 |
|
float W; |
| 646 |
|
} |
| 647 |
|
|
| 648 |
|
|
| 649 |
+ |
|
| 650 |
+ |
|
| 651 |
|
double solar_sunrise(int month,int day) |
| 652 |
|
{ |
| 653 |
|
float W; |
| 659 |
|
|
| 660 |
|
|
| 661 |
|
|
| 662 |
+ |
void printsky() |
| 663 |
+ |
{ |
| 664 |
+ |
|
| 665 |
+ |
printf("# Local solar time: %.2f\n", st); |
| 666 |
+ |
printf("# Solar altitude and azimuth: %.1f %.1f\n", altitude*180/M_PI, azimuth*180/M_PI); |
| 667 |
|
|
| 668 |
|
|
| 690 |
– |
|
| 691 |
– |
|
| 692 |
– |
|
| 693 |
– |
|
| 694 |
– |
|
| 695 |
– |
void printsky() /* print out sky */ |
| 696 |
– |
{ |
| 669 |
|
if (dosun&&(skyclearness>1)) |
| 670 |
|
{ |
| 671 |
|
printf("\nvoid light solar\n"); |
| 694 |
|
} |
| 695 |
|
|
| 696 |
|
|
| 697 |
+ |
|
| 698 |
+ |
void print_error_sky() |
| 699 |
+ |
{ |
| 700 |
+ |
|
| 701 |
+ |
|
| 702 |
+ |
sundir[0] = -sin(azimuth)*cos(altitude); |
| 703 |
+ |
sundir[1] = -cos(azimuth)*cos(altitude); |
| 704 |
+ |
sundir[2] = sin(altitude); |
| 705 |
+ |
|
| 706 |
+ |
printf("# Local solar time: %.2f\n", st); |
| 707 |
+ |
printf("# Solar altitude and azimuth: %.1f %.1f\n", altitude*180/M_PI, azimuth*180/M_PI); |
| 708 |
+ |
|
| 709 |
+ |
printf("\nvoid brightfunc skyfunc\n"); |
| 710 |
+ |
printf("2 skybright perezlum.cal\n"); |
| 711 |
+ |
printf("0\n"); |
| 712 |
+ |
printf("10 0.00 0.00 0.000 0.000 0.000 0.000 0.000 %f %f %f \n", sundir[0], sundir[1], sundir[2]); |
| 713 |
+ |
} |
| 714 |
+ |
|
| 715 |
+ |
|
| 716 |
+ |
|
| 717 |
+ |
|
| 718 |
+ |
|
| 719 |
|
void printdefaults() /* print default values */ |
| 720 |
|
{ |
| 721 |
|
printf("-g %f\t\t\t# Ground plane reflectance\n", gprefl); |
| 729 |
|
} |
| 730 |
|
|
| 731 |
|
|
| 732 |
< |
void userror(char* msg) /* print usage error and quit */ |
| 732 |
> |
|
| 733 |
> |
|
| 734 |
> |
void usage_error(char* msg) /* print usage error and quit */ |
| 735 |
|
{ |
| 736 |
|
if (msg != NULL) |
| 737 |
|
fprintf(stderr, "%s: Use error - %s\n\n", progname, msg); |
| 748 |
|
fprintf(stderr, " -E global-horizontal-irradiance (W/m^2)\n\n"); |
| 749 |
|
fprintf(stderr, " Output specification with option:\n"); |
| 750 |
|
fprintf(stderr, " -O [0|1|2] (0=output in W/m^2/sr visible, 1=output in W/m^2/sr solar, 2=output in candela/m^2), default is 0 \n"); |
| 751 |
< |
fprintf(stderr, " gendaylit version 2.3 (2013/08/08) \n\n"); |
| 751 |
> |
fprintf(stderr, " gendaylit version 2.4 (2013/09/04) \n\n"); |
| 752 |
|
exit(1); |
| 753 |
|
} |
| 754 |
|
|
| 755 |
|
|
| 756 |
|
|
| 757 |
+ |
|
| 758 |
|
double normsc() /* compute normalization factor (E0*F2/L0) */ |
| 759 |
|
{ |
| 760 |
|
static double nfc[2][5] = { |
| 778 |
|
|
| 779 |
|
|
| 780 |
|
|
| 781 |
+ |
|
| 782 |
+ |
|
| 783 |
|
void printhead(int ac, char** av) /* print command header */ |
| 784 |
|
{ |
| 785 |
|
putchar('#'); |
| 793 |
|
|
| 794 |
|
|
| 795 |
|
|
| 796 |
+ |
|
| 797 |
+ |
|
| 798 |
|
/* Perez models */ |
| 799 |
|
|
| 800 |
|
/* Perez global horizontal luminous efficacy model */ |
| 866 |
|
|
| 867 |
|
|
| 868 |
|
|
| 868 |
– |
|
| 869 |
|
for (i=1; i<=category_total_number; i++) |
| 870 |
|
{ |
| 871 |
|
if ( (skyclearness >= category_bounds[i]) && (skyclearness < category_bounds[i+1]) ) |
| 879 |
|
} |
| 880 |
|
|
| 881 |
|
|
| 882 |
+ |
|
| 883 |
+ |
|
| 884 |
|
/* global horizontal diffuse efficacy model, according to PEREZ */ |
| 885 |
|
double glob_h_diffuse_effi_PEREZ() |
| 886 |
|
{ |
| 888 |
|
double category_bounds[10], a[10], b[10], c[10], d[10]; |
| 889 |
|
int category_total_number, category_number, i; |
| 890 |
|
|
| 889 |
– |
|
| 890 |
– |
|
| 891 |
– |
|
| 891 |
|
check_parametrization(); |
| 892 |
|
|
| 893 |
|
|
| 894 |
|
/*if ((skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) && suppress_warnings==0) |
| 895 |
< |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function glob_h_diffuse_PEREZ \n"); */ |
| 895 |
> |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function glob_h_diffuse_PEREZ \n"); */ |
| 896 |
|
|
| 898 |
– |
|
| 899 |
– |
|
| 897 |
|
/* initialize category bounds (clearness index bounds) */ |
| 898 |
|
|
| 899 |
|
category_total_number = 8; |
| 949 |
|
|
| 950 |
|
|
| 951 |
|
|
| 955 |
– |
|
| 952 |
|
category_number = -1; |
| 953 |
|
for (i=1; i<=category_total_number; i++) |
| 954 |
|
{ |
| 958 |
|
|
| 959 |
|
if (category_number == -1) { |
| 960 |
|
if (suppress_warnings==0) |
| 961 |
< |
fprintf(stderr, "ERROR: Model parameters out of range, skyclearness = %lf \n", skyclearness); |
| 961 |
> |
fprintf(stderr, "Warning: sky clearness (= %.3f) too high, printing error sky\n", skyclearness); |
| 962 |
|
print_error_sky(); |
| 963 |
< |
exit(1); |
| 963 |
> |
exit(0); |
| 964 |
|
} |
| 965 |
|
|
| 966 |
|
|
| 973 |
|
|
| 974 |
|
|
| 975 |
|
|
| 976 |
+ |
|
| 977 |
+ |
|
| 978 |
+ |
|
| 979 |
|
/* direct normal efficacy model, according to PEREZ */ |
| 980 |
|
|
| 981 |
|
double direct_n_effi_PEREZ() |
| 986 |
|
int category_total_number, category_number, i; |
| 987 |
|
|
| 988 |
|
|
| 989 |
< |
if ((skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) && suppress_warnings==0) |
| 990 |
< |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function direct_n_effi_PEREZ \n"); |
| 989 |
> |
/*if ((skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) && suppress_warnings==0) |
| 990 |
> |
fprintf(stderr, "Warning: skyclearness or skybrightness out of range in function direct_n_effi_PEREZ \n");*/ |
| 991 |
|
|
| 992 |
|
|
| 993 |
|
/* initialize category bounds (clearness index bounds) */ |
| 1061 |
|
/*check the range of epsilon and delta indexes of the perez parametrization*/ |
| 1062 |
|
void check_parametrization() |
| 1063 |
|
{ |
| 1064 |
+ |
|
| 1065 |
|
if (skyclearness<skyclearinf || skyclearness>skyclearsup || skybrightness<skybriginf || skybrightness>skybrigsup) |
| 1066 |
|
{ |
| 1067 |
|
|
| 1068 |
|
/* limit sky clearness or sky brightness, 2009 11 13 by J. Wienold */ |
| 1069 |
+ |
|
| 1070 |
|
if (skyclearness<skyclearinf){ |
| 1071 |
< |
if (suppress_warnings==0) |
| 1072 |
< |
/* fprintf(stderr,"Range warning: sky clearness too low (%lf)\n", skyclearness); */ |
| 1071 |
> |
/* if (suppress_warnings==0) |
| 1072 |
> |
fprintf(stderr,"Range warning: sky clearness too low (%lf)\n", skyclearness); */ |
| 1073 |
|
skyclearness=skyclearinf; |
| 1074 |
|
} |
| 1075 |
|
if (skyclearness>skyclearsup){ |
| 1076 |
< |
if (suppress_warnings==0) |
| 1077 |
< |
/* fprintf(stderr,"Range warning: sky clearness too high (%lf)\n", skyclearness); */ |
| 1078 |
< |
skyclearness=skyclearsup-0.1; |
| 1076 |
> |
/* if (suppress_warnings==0) |
| 1077 |
> |
fprintf(stderr,"Range warning: sky clearness too high (%lf)\n", skyclearness); */ |
| 1078 |
> |
skyclearness=skyclearsup-0.001; |
| 1079 |
|
} |
| 1080 |
|
if (skybrightness<skybriginf){ |
| 1081 |
< |
if (suppress_warnings==0) |
| 1082 |
< |
/* fprintf(stderr,"Range warning: sky brightness too low (%lf)\n", skybrightness); */ |
| 1081 |
> |
/* if (suppress_warnings==0) |
| 1082 |
> |
fprintf(stderr,"Range warning: sky brightness too low (%lf)\n", skybrightness); */ |
| 1083 |
|
skybrightness=skybriginf; |
| 1084 |
|
} |
| 1085 |
|
if (skybrightness>skybrigsup){ |
| 1086 |
< |
if (suppress_warnings==0) |
| 1087 |
< |
/* fprintf(stderr,"Range warning: sky brightness too high (%lf)\n", skybrightness); */ |
| 1086 |
> |
/* if (suppress_warnings==0) |
| 1087 |
> |
fprintf(stderr,"Range warning: sky brightness too high (%lf)\n", skybrightness); */ |
| 1088 |
|
skybrightness=skybrigsup; |
| 1089 |
|
} |
| 1090 |
|
|
| 1093 |
|
} |
| 1094 |
|
|
| 1095 |
|
|
| 1096 |
+ |
|
| 1097 |
+ |
|
| 1098 |
+ |
|
| 1099 |
|
/* validity of the direct and diffuse components */ |
| 1100 |
|
void check_illuminances() |
| 1101 |
|
{ |
| 1102 |
|
if (directilluminance < 0) { |
| 1103 |
< |
fprintf(stderr,"WARNING: direct illuminance < 0. Using 0.0\n"); |
| 1103 |
> |
if(suppress_warnings==0) |
| 1104 |
> |
{ fprintf(stderr,"Warning: direct illuminance < 0. Using 0.0\n"); } |
| 1105 |
|
directilluminance = 0.0; |
| 1106 |
|
} |
| 1107 |
|
if (diffuseilluminance < 0) { |
| 1108 |
< |
fprintf(stderr,"WARNING: diffuse illuminance < 0. Using 0.0\n"); |
| 1108 |
> |
if(suppress_warnings==0) |
| 1109 |
> |
{ fprintf(stderr,"Warning: diffuse illuminance < 0. Using 0.0\n"); } |
| 1110 |
|
diffuseilluminance = 0.0; |
| 1111 |
|
} |
| 1112 |
< |
if (directilluminance > solar_constant_l*1000.0) { |
| 1113 |
< |
fprintf(stderr,"ERROR: direct illuminance exceeds solar constant\n"); |
| 1114 |
< |
exit(1); |
| 1112 |
> |
|
| 1113 |
> |
if (directilluminance+diffuseilluminance==0 && altitude > 0) { |
| 1114 |
> |
if(suppress_warnings==0) |
| 1115 |
> |
{ fprintf(stderr,"Warning: zero illuminance at sun altitude > 0, printing error sky\n"); } |
| 1116 |
> |
print_error_sky(); |
| 1117 |
> |
exit(0); |
| 1118 |
|
} |
| 1119 |
+ |
|
| 1120 |
+ |
if (directilluminance > solar_constant_l) { |
| 1121 |
+ |
if(suppress_warnings==0) |
| 1122 |
+ |
{ fprintf(stderr,"Warning: direct illuminance exceeds solar constant\n"); } |
| 1123 |
+ |
print_error_sky(); |
| 1124 |
+ |
exit(0); |
| 1125 |
+ |
} |
| 1126 |
|
} |
| 1127 |
|
|
| 1128 |
|
|
| 1129 |
|
void check_irradiances() |
| 1130 |
|
{ |
| 1131 |
|
if (directirradiance < 0) { |
| 1132 |
< |
fprintf(stderr,"WARNING: direct irradiance < 0. Using 0.0\n"); |
| 1132 |
> |
if(suppress_warnings==0) |
| 1133 |
> |
{ fprintf(stderr,"Warning: direct irradiance < 0. Using 0.0\n"); } |
| 1134 |
|
directirradiance = 0.0; |
| 1135 |
|
} |
| 1136 |
|
if (diffuseirradiance < 0) { |
| 1137 |
< |
fprintf(stderr,"WARNING: diffuse irradiance < 0. Using 0.0\n"); |
| 1137 |
> |
if(suppress_warnings==0) |
| 1138 |
> |
{ fprintf(stderr,"Warning: diffuse irradiance < 0. Using 0.0\n"); } |
| 1139 |
|
diffuseirradiance = 0.0; |
| 1140 |
|
} |
| 1141 |
+ |
|
| 1142 |
+ |
if (directirradiance+diffuseirradiance==0 && altitude > 0) { |
| 1143 |
+ |
if(suppress_warnings==0) |
| 1144 |
+ |
{ fprintf(stderr,"Warning: zero irradiance at sun altitude > 0, printing error sky\n"); } |
| 1145 |
+ |
print_error_sky(); |
| 1146 |
+ |
exit(0); |
| 1147 |
+ |
} |
| 1148 |
+ |
|
| 1149 |
|
if (directirradiance > solar_constant_e) { |
| 1150 |
< |
fprintf(stderr,"ERROR: direct irradiance exceeds solar constant\n"); |
| 1151 |
< |
exit(1); |
| 1150 |
> |
if(suppress_warnings==0) |
| 1151 |
> |
{ fprintf(stderr,"Warning: direct irradiance exceeds solar constant\n"); } |
| 1152 |
> |
print_error_sky(); |
| 1153 |
> |
exit(0); |
| 1154 |
|
} |
| 1155 |
|
} |
| 1156 |
|
|
| 1209 |
|
double test1=0.1, test2=0.1, d_eff; |
| 1210 |
|
int counter=0; |
| 1211 |
|
|
| 1212 |
< |
diffuseirradiance = diffuseilluminance*solar_constant_e/(solar_constant_l*1000); |
| 1213 |
< |
directirradiance = directilluminance*solar_constant_e/(solar_constant_l*1000); |
| 1212 |
> |
diffuseirradiance = diffuseilluminance*solar_constant_e/(solar_constant_l); |
| 1213 |
> |
directirradiance = directilluminance*solar_constant_e/(solar_constant_l); |
| 1214 |
|
skyclearness = sky_clearness(); |
| 1215 |
|
skybrightness = sky_brightness(); |
| 1216 |
|
check_parametrization(); |
| 1238 |
|
skybrightness = sky_brightness(); |
| 1239 |
|
skyclearness = sky_clearness(); |
| 1240 |
|
check_parametrization(); |
| 1213 |
– |
|
| 1214 |
– |
/*fprintf(stderr,"skyclearness = %lf, skybrightness = %lf, directirradiance = %lf, diffuseirradiance = %lf\n",skyclearness, skybrightness, directirradiance, diffuseirradiance);*/ |
| 1241 |
|
|
| 1242 |
|
} |
| 1243 |
|
|
| 1274 |
|
|
| 1275 |
|
if ( (epsilon < skyclearinf) || (epsilon >= skyclearsup) ) |
| 1276 |
|
{ |
| 1277 |
< |
fprintf(stderr,"Epsilon out of range in function calc_rel_lum_perez!\n"); |
| 1277 |
> |
fprintf(stderr,"Error: epsilon out of range in function calc_rel_lum_perez!\n"); |
| 1278 |
|
exit(1); |
| 1279 |
|
} |
| 1280 |
|
|
| 1325 |
|
|
| 1326 |
|
if ( (epsilon < skyclearinf) || (epsilon >= skyclearsup) ) |
| 1327 |
|
{ |
| 1328 |
< |
fprintf(stderr,"Epsilon out of range in function calc_rel_lum_perez !\n"); |
| 1328 |
> |
fprintf(stderr,"Error: epsilon out of range in function coeff_lum_perez!\n"); |
| 1329 |
|
exit(1); |
| 1330 |
|
} |
| 1331 |
|
|
| 1394 |
|
else if ( (cos(Z)*cos(theta)+sin(Z)*sin(theta)*cos(phi)) > 1.1 ) |
| 1395 |
|
{ |
| 1396 |
|
printf("error in calculation of gamma (angle between point and sun"); |
| 1397 |
< |
exit(3); |
| 1397 |
> |
exit(1); |
| 1398 |
|
} |
| 1399 |
|
else |
| 1400 |
|
*gamma = acos(cos(Z)*cos(theta)+sin(Z)*sin(theta)*cos(phi)); |
| 1438 |
|
double m; |
| 1439 |
|
if (sunzenith>90) |
| 1440 |
|
{ |
| 1441 |
< |
fprintf(stderr, "Solar zenith angle larger than 90 degrees in function air_mass()\n"); |
| 1442 |
< |
exit(1); |
| 1441 |
> |
if(suppress_warnings==0) |
| 1442 |
> |
{ fprintf(stderr, "Warning: air mass has reached the maximal value\n"); } |
| 1443 |
> |
sunzenith=90; |
| 1444 |
|
} |
| 1445 |
|
m = 1/( cos(sunzenith*M_PI/180)+0.15*exp( log(93.885-sunzenith)*(-1.253) ) ); |
| 1446 |
|
return(m); |