-
Notifications
You must be signed in to change notification settings - Fork 48
/
22 - Mirrors and Modules.py
189 lines (108 loc) · 5.14 KB
/
22 - Mirrors and Modules.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
#!/usr/bin/env python
# coding: utf-8
# In[1]:
# This information helps with debugging and getting support :)
import sys, platform
import pandas as pd
import bifacial_radiance as br
print("Working on a ", platform.system(), platform.release())
print("Python version ", sys.version)
print("Pandas version ", pd.__version__)
print("bifacial_radiance version ", br.__version__)
# # 22 - Mirrors and Modules
#
#
# Doing an example tutorial for example brought up in Issue #372
#
# ![Mirror and Module Combo](../images_wiki/AdvancedJournals/22_mirror_moduleCombo.PNG)
#
#
# In[1]:
import os
from pathlib import Path
testfolder = str(Path().resolve().parent.parent / 'bifacial_radiance' / 'TEMP' / 'Tutorial_22')
if not os.path.exists(testfolder):
os.makedirs(testfolder)
print ("Your simulation will be stored in %s" % testfolder)
# In[2]:
import bifacial_radiance
import numpy as np
import pprint
import pandas as pd
# <a id='step2'></a>
# In[3]:
demo = bifacial_radiance.RadianceObj('tutorial_22', path=testfolder) # Adding a simulation name. This is optional.
demo.setGround(0.2)
epwfile = demo.getEPW(lat=37.5, lon=-77.6)
metdata = demo.readWeatherFile(weatherFile=epwfile, coerce_year=2021)
timeindex = metdata.datetime.index(pd.to_datetime('2021-01-01 12:0:0 -5'))
demo.gendaylit(timeindex) # Choosing a december time when the sun is lower in the horizon
# ## 1. Create your module and evaluate irradiance without the mirror element
# In[4]:
tilt = 75
sceneDict1 = {'tilt':tilt,'pitch':5,'clearance_height':0.05,'azimuth':180,
'nMods': 1, 'nRows': 1, 'originx': 0, 'originy': 0, 'appendRadfile':True}
mymodule1 = demo.makeModule(name='test-module',x=2,y=1, numpanels=1)
sceneObj1 = demo.makeScene(mymodule1, sceneDict1)
# In[5]:
octfile = demo.makeOct(demo.getfilelist())
analysis = bifacial_radiance.AnalysisObj(octfile, demo.basename)
frontscan, backscan = analysis.moduleAnalysis(sceneObj1, sensorsy=1)
results = analysis.analysis(octfile, demo.basename, frontscan, backscan)
# In[6]:
withoutMirror = bifacial_radiance.load.read1Result('results\irr_tutorial_22.csv')
withoutMirror
# ## 2. Add Mirror
#
# ### Approach 1: Pretend the mirror is another module.
#
# We start by creating the mirror material in our ground.rad file, in case it is not there. For mirror or glass primitives (material classes), pecularity and roughness are not needed.
#
# You could alternatively do a plastic material, and increase the specularity and lower the roughness to get a very reflective surface.
# In[7]:
demo.addMaterial(material='testmirror', Rrefl=0.94, Grefl=0.96, Brefl=0.96,
materialtype = 'mirror') # specularity and roughness not needed for mirrors or glass.
# In[8]:
mymodule2 = demo.makeModule(name='test-mirror',x=2,y=1, numpanels=1, modulematerial='testmirror')
# We calculate the displacement of the morrir as per the equations show in the image at the beginning of the tutorial
# In[9]:
originy = -(0.5*mymodule2.sceney + 0.5*mymodule1.sceney*np.cos(np.radians(tilt)))
# In[10]:
sceneDict2 = {'tilt':0,'pitch':0.00001,'clearance_height':0.05,'azimuth':180,
'nMods': 1, 'nRows': 1, 'originx': 0, 'originy': originy, 'appendRadfile':True}
sceneObj2 = demo.makeScene(mymodule2, sceneDict2)
# In[11]:
octfile = demo.makeOct(demo.getfilelist())
# Use rvu in the terminal or by commenting out the cell below to view the generated geometry, it should look like this:
#
# ![Mirror and Module Combo](../images_wiki/AdvancedJournals/22_mirror_moduleCombo_rvu.PNG)
#
#
# In[12]:
## Comment the line below to run rvu from the Jupyter notebook instead of your terminal.
## Simulation will stop until you close the rvu window
# !rvu -vf views\front.vp -e .01 -vp 4 -0.6 1 -vd -0.9939 0.1104 0.0 tutorial_22.oct
# In[13]:
analysis = bifacial_radiance.AnalysisObj(octfile, demo.basename)
frontscan, backscan = analysis.moduleAnalysis(sceneObj1, sensorsy=1)
results = analysis.analysis(octfile, name=demo.basename+'_withMirror', frontscan=frontscan, backscan=backscan)
withMirror = bifacial_radiance.load.read1Result('results\irr_tutorial_22_withMirror.csv')
withMirror
# Just as a sanity check, we could sample the mirror...
# In[14]:
frontscan, backscan = analysis.moduleAnalysis(sceneObj2, sensorsy=1)
results = analysis.analysis(octfile, name=demo.basename+'_Mirroritself', frontscan=frontscan, backscan=backscan)
bifacial_radiance.load.read1Result('results\irr_tutorial_22_Mirroritself.csv')
# And we can calculate the increase in front irradiance from the mirror:
# In[15]:
print("Gain from mirror:", round((withMirror.Wm2Front[0] - withoutMirror.Wm2Front[0] )*100/withoutMirror.Wm2Front[0],1 ), "%" )
# ### Approach 2:
#
# Create mirrors as their own objects and Append to Scene, like on tutorial 5. Sample code below:
# In[16]:
# name='Mirror1'
# text='! genbox black cuteMirror 2 1 0.02 | xform -t -1 -0.5 0 -t 0 {} 0'.format(originy)
# customObject = demo.makeCustomObject(name,text)
# demo.appendtoScene(radfile=scene.radfiles, customObject=customObject, text="!xform -rz 0")
# sceneObj2 = demo.makeScene(mymodule2, sceneDict2)
# and then you do your Scene, Oct, and Analysis as usual.