10. OUTLINE
– Need
– Fixtures
– Material
– Different systems
Rooftop mounting
Ground mounting
Pole mounting
– Tilt angle calculation
– Wind load calculation
Tilted array
Flush array
Wednesday, May 23, 2018MOUNTINGS
10
11. MATERIALS
PROPERTIES
– High strength to weight ratio
– Anti-corrosive
– Withstand against high wind speed
– Electrically non-conductive
– Non-woven based
EXAMPLES
– Aluminum alloys
– Ionized Aluminum
– Stainless steel alloys
Wednesday, May 23, 2018MOUNTINGS
11
12. OUTLINE
– Need
– Fixtures
– Material
– Different systems
Rooftop mounting
Ground mounting
Pole mounting
– Tilt angle calculation
– Wind load calculation
Flush array
Tilted array
Wednesday, May 23, 2018MOUNTINGS
12
13. MOUNTING FOR FLUSH
ROOFTOP
Wednesday, May 23, 2018MOUNTINGS
13
• For tilted roof
tops
• Panel inclination
angle with roof
top is zero
• For south facing
roof tops.
14. Wednesday, May 23, 2018MOUNTINGS
14
1. insert L-foot on
sheds
2. Rails on the L-
foots and make
two rows of rails
3. Make rows
using rail joiners.
4. Use End
clamps
5. Use Mid clamps
to join two panels.
6. Insert Earth lock
7. Insert isolate
brackets.
16. Wednesday, May 23, 2018MOUNTINGS
16
1. insert Channel
- foot on sheds
2. Channels on the
channel-foots and
make rows of channels
3. Make rows using channel joiners.
4. Tilt brackets kit
17. Wednesday, May 23, 2018MOUNTINGS
17
Make string
lines.
Use end clamps and mid clamps to
secure the panels on channels
Provide Earth lock
provide isolate brackets.
19. Wednesday, May 23, 2018MOUNTINGS
19
• Dug a pit
• Insert a C- channel
• Fasten the horizontal channels and make rows
• Fasten the vertical and inclined channels for making
desired inclination angle.
• Use End and Mid Clamps for joining the panels
22. Wednesday, May 23, 2018MOUNTINGS
22
Pivoted bracket for
holding the panels
with pole.
Pivoted assembly
for giving desired
tilt.
Square channels
and L-foot
Make H section for
holding the panels.
Fix H section on
pivoted assembly
23. OUTLINE
– Need
– Fixtures
– Material
– Different systems
Rooftop mounting
Ground mounting
Pole mounting
– Tilt angle calculation
– Wind load calculation
Tilted array
Flush array
Wednesday, May 23, 2018MOUNTINGS
23
24. TILT ANGLE(β) CALCULATION
1) β = latitude angle ± 15°
+ for winter
- for summer
2) For winter
β = (latitude angle * 0.9) + 29
For summer
β = (latitude angle * 0.9) – 23.5
– less accurate method
– More accurate method
Wednesday, May 23, 2018MOUNTINGS
24
25. OUTLINE
– Need
– Fixtures
– Material
– Different systems
Rooftop mounting
Ground mounting
Pole mounting
– Tilt angle calculation
– Wind load calculation
Tilted array
Flush array
Wednesday, May 23, 2018MOUNTINGS
25
26. WIND LOAD
– Mostly inclination angle is equal to latitude angle.
– Due to wind, unequal pressure on both sides.
– Drag force in the direction of wind
– Lift force in the perpendicular direction of flow
– Produces torque.
– Depends upon air density
wind velocity
projected area
Wednesday, May 23, 2018MOUNTINGS
26
27. CONTINUE
– Drag force, D=
1
2
ƍu2ACD
– Lift force, L=
1
2
ƍu2ACL
– ƍ= air density (kg/m3)
– U= wind velocity (m/s2)
– A= projected area (m2)
– CD and CL = drag and lift coefficient
– proper understanding of the wind phenomenon at the site can help prevent
solar panel damages
Wednesday, May 23, 2018MOUNTINGS
27
28. REFERANCES
– SUNLOCK
– WIKIPEDIA
– solarpoweristhefuture.com
– Experimental investigation of wind effect on solar Panels by Ayodeji Abiola-
Ogedengbe, The University of Western Ontario.
Wednesday, May 23, 2018MOUNTINGS
28
