HomeMy WebLinkAboutWATERGLEN SOLAR ARRAY - PDP190010 - SUBMITTAL DOCUMENTS - ROUND 2 - SUPPLEMENTAL INFORMATIONAnnual Predicted Glare Occurrence
No0-
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Day of year
M Low potential for temporary +fter-imsge
fblmtul for tempaary aRw+maye
Glare Reflections on PV Footprint (Aggregate)
190
160
140
110
t
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60
30
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O 10 Op be SO %d, ):l,O �p0 ti60
East(ft)
r• Low Potential for temooary afterimage
Potential for temporary afterimage
t• W Arta, Footprint
60 Daily Duration of Glare
50
w 40
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N 30
d
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E 20
10
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V° Fe° JaF Pd FN'1 VP '0 0 0 6� Npa V1c
Day of year
Low pntennal for nrrrm rary after image
Potential for mmpmary after.'mage
Hazard plot for pv-array-1 and OP 4
10• I0l IV 10'
Subtended Source Angle (mrad)
a HAZdrd from Source Data
p tfaiard Duero v'ewmg Unfiltered Sun
Potential for After Image Zone
Low Potential for After Image Zone
Permanent Retinal Damage Zone
PV array 1 potential temporary after -image
Component Green glare (min) Yellow glare (min)
OP OP 1 0 0
OP OP2 0 0
OP. OP 3 0 0
OP. OP a 0 14
Rolle Route 1 0 0
PV array 1 - OP Receptor (OP 1)
No gare !centl
PV array 1 - OP Receptor (OP 2)
No glare '0"'Id
PV array 1 - OP Receptor (OP 3)
Nei glare to✓ w
PV array 1 - OP Receptor (OP 4)
I%V Arta'.' a erpeaeo to p'o luce the bllowlnp glare f r ieceplors al tins Icn_atan
0 rcmwes ra "green glare v. rm Inx WArMial to cause temporary aleounage
Iit. innlr5 0l' YPUoa"')lare c,lin pol'W'8I Ip rin[e tempos inY alter -midge
i�
Route Receptor(s)
Name RnNe 1
ROM type Twp way
Vlewarlpie 5000eg
Ground
NelQlll ]Dore
Total
Vertex Labtu Oe
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elovatlon
prounb
owwabotl
dog
dog
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it
t 40 604224
.105 010871
498491
000
498491
1 40602787
-105011182
497940
000
497940
3 406018a2
-105012411
4986a6
000
498646
Component Data
PV Array(s)
Name PV array 1
Axis tracking Fixed (no rotation)
Till 30 0 deg
Orientation. 160.0 deg
Rated power. -
Panel material Smooth glass wilhoul AR coating
vary reflectivity with sun position? yes
Correlate Slope Mot with surface type? yes
Slope error 6 5!i nnao
Ground
Height above
Total
Ver0ex
Latitude
Longitude
elevation
ground
elevation
deg
deg
At
tt
It
1
40,602914
.105.009879
A975.40
0.00
497540
2
40 602925
-105 009327
4972 12
000
4972 12
3
40603134
-105009351
4974.20
0.00
4974.20
4
40.603318
.105 009450
4972 15
0.00
4972.15
5
40.603428
.105,009563
4973.27
000
4973.27
6
40.603415
-106.009783
4978.02
000
4978,02
7
40603189
.105.009887
4977.50
0.00
497750
Created Aug. 29. 2019 7:21 p.m.
Updated Aug. 29. 2019 7:21 p.m.
DNI vanes and peaks at 1.000.0 WJm"2
Analyze every 4 minute(s)
0.5 ocular transmission coefhc*nt
0.002 m pupil diameter
0.017 m eve focal length
9.3 mrad sun subtended angle
Tlmezone UTC-7
Site Configuration tD. 30750 5596
Summary of Results Glare with potential for temporary after -image predicted
Pv name 'lit Orientation "Green" Glare "YellowGlare
deg deg min
.nice 1 ,,
min
Energy Produced
nwn
Height of Observation Point 5.5'
3 Findings/Results
The results of the solar glare analysis for the proposed PV system to be located on the ground
at 6422 Kyle Avenue in Fort Collins are included on the pages below. The primary result is that
no glare is predicted at 3 of the 4 observation points defined on page 1 of the report by
numbered markers. Yellow Glare is predicted at observation point 4, but it is only for 14 minutes
of the year and it modeled the corner of the array area that does not have solar panels. This can
be modeled in the glare reflections footprint area table. For reference, 'Green glare' is defined by
ForgeSolar as glare with low potential for temporary after -image and 'Yellow glare' is defined as
glare with the potential for temporary after -image.
Sandbox Solar performed this analysis using ForgeSolar software. This software is based
on the R&D 100 Award -winning Solar Glare Hazard Analysis Tool (SGHAT) software, which
was developed jointly with Sandia National Laboratories. ForgeSolar software was specifically
designed to accommodate FAA requirements, but can also be used for sites located away from
airports.
2.2 Model Assumptions and Inputs
The solar glare analysis significant assumptions and input information used in the ForgeSolar
software are summarized below.
Glare Analysis Model Inputs
Parameter
Value
PV Fixed Tilt System
Array Orientation
1800
Array Tilt Angle
300
Panel Surface
Smooth Tempered Glass with Anti -Reflective
Coating
Reflectivity
Varies with incident angle, weather, sun
position, and time of year.
Slope Error
Correlate with module surface type.
PV system height
7'4"
1 Executive Summary
1.1 Introduction
Sandbox Solar has conducted a solar glare analysis for the photovoltaic (PV) system that is
proposed to be located at 3730 Celtic Ln, Fort Collins, CO, 80524. The analysis was performed
with software that was designed to evaluate potential glare hazards for solar PV systems
designated for installation near airports and to accommodate Federal Aviation Administration
(FAA) regulations, but can also be used to evaluate glare for solar projects located in other
areas.
1.2 Scope of Services
For this work effort, Sandbox Solar performed the following activities:
• Reviewed existing design documentation for the proposed solar PV array at 3730 Celtic
Ln, Fort Collins, CO, 80524 to define the specific parameters and information required for
the glare analysis.
• Obtained additional, necessary inputs from other parties to complete the glare analysis
((e.g. module manufacturer specification information).
• Performed analysis with a 3rd party software that is based on former Sandia Lab SGHT
technology.
• Provided limited commentary on design assumptions and analysis results.
2 Analysis Software
2.1 Platform and Features
SANDBOX
.A A R
430 N. College Ave.
STE #435
Fort Collins, CO 80524
(913) 660 -8581
AJLyle(@sandboxsolar.com
sandboxsolar.com
Waterglen Solar Glare Analysis
1 Executive Summary 2
1.1 Introduction 2
1.2 Scope of Services 2
2 Analysis Software 2
2.1 Platform and Features 2
2.2 Model Assumptions and Inputs 3
3 Findings/Results 4