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Optimum Tilt Angle Determine

Optimum Tilt Angle Determine

Copyright: © 2018 |Pages: 159
ISBN13: 9781522529507|ISBN10: 1522529500|EISBN13: 9781522529514
DOI: 10.4018/978-1-5225-2950-7.ch005
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MLA

S. Soulayman. "Optimum Tilt Angle Determine." Economical and Technical Considerations for Solar Tracking: Methodologies and Opportunities for Energy Management, IGI Global, 2018, pp.294-452. https://doi.org/10.4018/978-1-5225-2950-7.ch005

APA

S. Soulayman (2018). Optimum Tilt Angle Determine. IGI Global. https://doi.org/10.4018/978-1-5225-2950-7.ch005

Chicago

S. Soulayman. "Optimum Tilt Angle Determine." In Economical and Technical Considerations for Solar Tracking: Methodologies and Opportunities for Energy Management. Hershey, PA: IGI Global, 2018. https://doi.org/10.4018/978-1-5225-2950-7.ch005

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Abstract

After treating extraterrestrial and terrestrial solar radiations in the previous chapters, the use of this information in treating an important question regarding the installation of fixed solar systems, namely the tilt and orientation of the solar receivers, becomes possible. There are several rules that guide designers in this field. These rules are called the rules of thumb. There are two rules that are directly related to the subject of this chapter. One of these two rules says that a solar collector should be orientated towards Equator. The other one says that solar collector should have a latitude tilt value. Are these two rules valid all over the world? The present chapter focuses on presenting an algorithm for determining the optimum tilt angle all over the world and for any collector azimuth angle. The Earth surface, located between latitudes 66.45oS and 66.45oN, is divided into 3 characteristic zones. The first zone is the tropical between latitudes 23.45oS and 23.45oN. The second zone is the mid-latitude zone between 23.45oN and 43.45oN and between 23.45oS and 43.45oS. The third zone is the high-latitude zone between 43.45oN and 66.45oN and between 43.45oS and 66.45oS. For each of these zones an adequate method is proposed for calculating the solar collector optimum tilt. Moreover, four simple equations are proposed for predicting daily optimum tilt angle and optimum tilt angle for any number of consecutive days. It is found that the above mentioned rules of thumb are not applicable in the tropical zone while they could be applied with a sufficient accuracy when dealing with fixed installations all over the year in the mid- and high latitude zones.

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