As I have already discussed in the previous post that i am adding single axis tracking to my solar panel and the Altitude angle (Tilt angle) shall be adjusted in Summer and Winter to get the maximum efficiency out of the solar panels. Here are the Rule of thumb for best tilt angle.
SEASON------------------- ANGLE TILT CALCULATION
Winter -------------------- (Latitude x 0.89) + 24 degrees
Summer ------------------- (Latitude x 1.05) - 24.3 degrees
Spring & falls -------------- (Latitude x0.98) - 2.3 degrees
Pakistan resides in Northern hemisphere so the Solar panel should be toward the TRUE NORTH. The Tilt angle is calculated from the Horizon.
Example:
City : SADIQABAD, PAKISTAN
Latitude (from google) : 28.1700 N
Tilt Angle for Winter= (28.17 x 0.89) +24 degree = 49.07
= Say 49 degree from horizon or (90- 49 = 41 degree) from the vertical
Tilt Angle for Summer= (28.17 x 1.05) -24.3 degree = 5.27
= Say 5 degree from horizon or (90-5 = 85 degree) from the vertical
Tilt Angle for Spring & Fall= (28.17 x 0.98)-2.3 = 25.306
= Say 25 degree from horizon or (90- 25 = 65 degree) from the vertical
As these solar panels i intend to install in Karachi so:
City : KARACHI, PAKISTAN
Latitude (from google) : 24.8508 N
Tilt Angle for Winter= (24.8508 x 0.89) +24 degree = 46.11 = Say 46 degree (90-46 = 44 degree )
Tilt Angle for Summer= (24.8508 x 1.05) -24.3 degree = 1.79 = Say 1.8 degree (90-1.8=88.2 degree)
Tilt Angle for Spring & Fall= (24.8508 x 0.98)-2.3 = Say 23 degree
SEASON------------------- ANGLE TILT CALCULATION
Winter -------------------- (Latitude x 0.89) + 24 degrees
Summer ------------------- (Latitude x 1.05) - 24.3 degrees
Spring & falls -------------- (Latitude x0.98) - 2.3 degrees
Pakistan resides in Northern hemisphere so the Solar panel should be toward the TRUE NORTH. The Tilt angle is calculated from the Horizon.
Example:
City : SADIQABAD, PAKISTAN
Latitude (from google) : 28.1700 N
Tilt Angle for Winter= (28.17 x 0.89) +24 degree = 49.07
= Say 49 degree from horizon or (90- 49 = 41 degree) from the vertical
Tilt Angle for Summer= (28.17 x 1.05) -24.3 degree = 5.27
= Say 5 degree from horizon or (90-5 = 85 degree) from the vertical
Tilt Angle for Spring & Fall= (28.17 x 0.98)-2.3 = 25.306
= Say 25 degree from horizon or (90- 25 = 65 degree) from the vertical
As these solar panels i intend to install in Karachi so:
City : KARACHI, PAKISTAN
Latitude (from google) : 24.8508 N
Tilt Angle for Winter= (24.8508 x 0.89) +24 degree = 46.11 = Say 46 degree (90-46 = 44 degree )
Tilt Angle for Summer= (24.8508 x 1.05) -24.3 degree = 1.79 = Say 1.8 degree (90-1.8=88.2 degree)
Tilt Angle for Spring & Fall= (24.8508 x 0.98)-2.3 = Say 23 degree
Are these tilt angle correct.
ReplyDeleteI am getting completely different figures from this web site.
http://www.solarpaneltilt.com/
arshadjaswal@yahoo.com
This comment has been removed by the author.
DeleteI'd be trampled if all sites gave articles like these awesome articles.solar kits
ReplyDeletecorrection: True South not North in the northern Hemisphere!
ReplyDeleteI believe you are correct, should face South, not North.
DeleteKpk buner Khuda khel may kes Tara
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