### reset
plt.close()
# calculate solar angle of incidence for a summer day in Golden, CO
longitude = 105.2
stdmeridian = 105
latitude = 39.75
x = []
east_wall_normal_from_north = 90
east_theta = []
east_az = []
alt = []
for hour in range(0,24): # gives zero-based hours as expected in the datetime constructor
x.append(hour)
dt = datetime(2001, 6, 21, hour, 00, 00)
east_az.append(solar.wallAzimuthAngle(dt, True, longitude, stdmeridian, latitude, east_wall_normal_from_north).degrees)
east_theta.append(solar.solarAngleOfIncidence(dt, True, longitude, stdmeridian, latitude, east_wall_normal_from_north).degrees)
alt.append(solar.altitudeAngle(dt, True, longitude, stdmeridian, latitude).degrees)
plt.plot(x, alt, 'r', label='Solar Altitude Angle')
plt.plot(x, east_az, 'g', label='East Wall Azimuth Angle')
plt.plot(x, east_theta, 'b', label='East Wall Incidence Angle')
plt.xlim([0,23])
plt.ylim([-90,180])
plt.suptitle("Wall Solar Incidence Angles", fontsize=14, fontweight='bold')
plt.xlabel("Hour of Day -- Clock Time")
plt.ylabel("Angle [degrees]")
plt.grid(True, axis='both')
plt.legend()
plt.savefig(os.path.join(os.path.dirname(__file__), '..', '..', 'SolarCalculations.wiki/DemoSolarAnglesSolarIncidence.png'))
mywriter = csv.writer(csvfile)
mywriter.writerow(['Hour', 'Hour Angle', 'Solar Altitude', 'Solar Azimuth'])
for hour in range(0,24): # gives zero-based hours as expected in the datetime constructor
x = hour
dt = datetime(2001, 12, 21, hour, 30, 00)
thour = solar.hourAngle(dt, False, longitude, stdmeridian).degrees
altitude = solar.altitudeAngle(dt, False, longitude, stdmeridian, latitude).degrees
azimuth = solar.solarAzimuthAngle(dt, False, longitude, stdmeridian, latitude).degrees
mywriter.writerow([x, -thour, altitude, azimuth])
with open('/tmp/compare_summer_angles_library.csv', 'w') as csvfile:
mywriter = csv.writer(csvfile)
mywriter.writerow(['Hour', 'Hour Angle', 'Solar Altitude', 'Solar Azimuth'])
for hour in range(0,24): # gives zero-based hours as expected in the datetime constructor
x = hour
dt = datetime(2001, 7, 21, hour, 30, 00)
thour = solar.hourAngle(dt, False, longitude, stdmeridian).degrees
altitude = solar.altitudeAngle(dt, False, longitude, stdmeridian, latitude).degrees
azimuth = solar.solarAzimuthAngle(dt, False, longitude, stdmeridian, latitude).degrees
mywriter.writerow([x, -thour, altitude, azimuth])
with open('/tmp/compare_summer_incidence_library.csv', 'w') as csvfile:
mywriter = csv.writer(csvfile)
mywriter.writerow(['Hour', 'East Incidence', 'West Incidence'])
for hour in range(0,24): # gives zero-based hours as expected in the datetime constructor
x = hour
dt = datetime(2001, 7, 21, hour, 30, 00)
theta_west = solar.solarAngleOfIncidence(dt, False, longitude, stdmeridian, latitude, 270).degrees
theta_east = solar.solarAngleOfIncidence(dt, False, longitude, stdmeridian, latitude, 90).degrees
mywriter.writerow([x, theta_east, theta_west])
south_wall_normal_from_north = 180
west_wall_normal_from_north = 270
with open('/tmp/eplus_validation_location.csv', 'w') as csvfile:
mywriter = csv.writer(csvfile)
mywriter.writerow(['Hour', 'Hour Angle', 'Solar Altitude', 'Solar Azimuth', 'Cos East Wall Theta', 'Cos South Wall Theta', 'Cos West Wall Theta'])
for month in range(1,3): # just january and february
thisLat = getLat(month)
thisLong = getLong(month)
for day in range(1,monthrange(2011, month)[1]+1): # just make sure it isn't a leap year
for hour in range(0,24): # gives zero-based hours as expected in the datetime constructor
x = hour
dt = datetime(2011, month, day, hour, 30, 00)
thour = solar.hourAngle(dt, False, thisLong, stdmeridian).degrees
altitude = solar.altitudeAngle(dt, False, thisLong, stdmeridian, thisLat).degrees
azimuth = solar.solarAzimuthAngle(dt, False, thisLong, stdmeridian, thisLat).degrees
east_theta = solar.solarAngleOfIncidence(dt, False, thisLong, stdmeridian, thisLat, east_wall_normal_from_north).radians
south_theta = solar.solarAngleOfIncidence(dt, False, thisLong, stdmeridian, thisLat, south_wall_normal_from_north).radians
west_theta = solar.solarAngleOfIncidence(dt, False, thisLong, stdmeridian, thisLat, west_wall_normal_from_north).radians
if east_theta != None:
east_theta = math.cos(east_theta)
if south_theta != None:
south_theta = math.cos(south_theta)
if west_theta != None:
west_theta = math.cos(west_theta)
mywriter.writerow([x, -thour, altitude, azimuth, east_theta, south_theta, west_theta])
def getWallOrientation(month):
if month <= 1:
return 0
elif month == 2:
return 90
latitude = 39.75
x = []
east_wall_normal_from_north = 90
east_theta = []
east_az = []
alt = []
for hour in range(
0,
24): # gives zero-based hours as expected in the datetime constructor
x.append(hour)
dt = datetime(2001, 6, 21, hour, 00, 00)
east_az.append(
solar.wallAzimuthAngle(dt, True, longitude, stdmeridian, latitude,
east_wall_normal_from_north).degrees)
east_theta.append(
solar.solarAngleOfIncidence(dt, True, longitude, stdmeridian, latitude,
east_wall_normal_from_north).degrees)
alt.append(
solar.altitudeAngle(dt, True, longitude, stdmeridian,
latitude).degrees)
plt.plot(x, alt, 'r', label='Solar Altitude Angle')
plt.plot(x, east_az, 'g', label='East Wall Azimuth Angle')
plt.plot(x, east_theta, 'b', label='East Wall Incidence Angle')
plt.xlim([0, 23])
plt.ylim([-90, 180])
plt.suptitle("Wall Solar Incidence Angles", fontsize=14, fontweight='bold')
plt.xlabel("Hour of Day -- Clock Time")
plt.ylabel("Angle [degrees]")
plt.grid(True, axis='both')
plt.legend()
plt.savefig(
for day in range(1,
monthrange(2011, month)[1] +
1): # just make sure it isn't a leap year
for hour in range(
0, 24
): # gives zero-based hours as expected in the datetime constructor
x = hour
dt = datetime(2011, month, day, hour, 30, 00)
thour = solar.hourAngle(dt, False, thisLong,
stdmeridian).degrees
altitude = solar.altitudeAngle(dt, False, thisLong,
stdmeridian, thisLat).degrees
azimuth = solar.solarAzimuthAngle(dt, False, thisLong,
stdmeridian, thisLat).degrees
east_theta = solar.solarAngleOfIncidence(
dt, False, thisLong, stdmeridian, thisLat,
east_wall_normal_from_north).radians
south_theta = solar.solarAngleOfIncidence(
dt, False, thisLong, stdmeridian, thisLat,
south_wall_normal_from_north).radians
west_theta = solar.solarAngleOfIncidence(
dt, False, thisLong, stdmeridian, thisLat,
west_wall_normal_from_north).radians
if east_theta != None:
east_theta = math.cos(east_theta)
if south_theta != None:
south_theta = math.cos(south_theta)
if west_theta != None:
west_theta = math.cos(west_theta)
mywriter.writerow([
x, -thour, altitude, azimuth, east_theta, south_theta,
