Determination of Optimum Fixed and Adjustable Tilt Angles for Solar Collectors by Using Typical Meteorological Year Data for Turkey

Abstract

In this paper the possible optimum fixed and adjustable tilt angles for solar collectors are determined by using Yypical Meteorological Data set for nine main provinces of Turkey. the tilt angle types considered in this paper are monthly adjustment, seasonal adjustment, semi annual adjustment, optimum fixed angle and an angle equals to the latitude of the area. as a result of this paper it has been obseved that up to 6.9 % more solar radiation can be collected by using a monthly adjustment of collectors in comparison with latitude tilt angles. The optimum angles have found to range from a minimum of 2 degrees up to 57 degrees. the seasonal adjustment angles have been found to be between 9 and 48 degrees. the semi annual angles are from 18 to 28 degrees less than the latitude of the area.

Keywords

• Solar radiation; Tilt angle; Typical Meteorological Year; Optimum; latitude

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