A site is located at 20 deg South. Determine the solar altitude and the best tilt angle for PV array at solar noon when the Sun is over the Equator, over the Tropic of Cancer, and over the Tropic of Capricorn respectively. Ans: a) Over the equator S Solar altitude (a) = 90 deg – 0 = 90 deg – 20 = 70 deg facing North Best tilt angle (B) = 180 deg – 90 deg – a = 90 deg – 70 = 20 deg facing North

A site is located at 20 deg South. Determine the solar altitude and the best tilt angle for PV array at solar noon when the Sun is over the Equator, over the Tropic of Cancer, and over the Tropic of Capricorn respectively. Ans: a) Over the equator S Solar altitude (a) = 90 deg – 0 = 90 deg – 20 = 70 deg facing North Best tilt angle (B) = 180 deg – 90 deg – a = 90 deg – 70 = 20 deg facing North