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Lecture 5A - Solar Resource - Part 1

Lecture 5A - Solar Resource - Part 1 - ECE 4364/5374G...

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1/28/11 1 ECE 4364/5374G-5A (c) Saifur Rahman 1 Professor Saifur Rahman Electrical & Computer Engineering Dept. Virginia Tech Lecture 5A: Solar Resource - 1 ECE 4364/5374G: Alternate Energy Systems ECE 4364/5374G-5A (c) Saifur Rahman 2 There are three chapters in this part of the book. Chapter 7. Solar Resource Chapter 8. Solar Thermal Systems Chapter 9. Photovoltaic Systems Part III -­૒ Solar Energy Systems

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1/28/11 2 ECE 4364/5374G-5A (c) Saifur Rahman 3 Figure 7.a Solstice and Equinox ECE 4364/5374G-5A (c) Saifur Rahman 4 Figure 7.b Solar Azimuth
1/28/11 3 ECE 4364/5374G-5A (c) Saifur Rahman 5 7.1 Introduction The most commonly used term for solar radiation is the global horizontal radiation or insolation. This represents the rate at which the solar energy reaches the surface of the earth. Calculate the horizontal flat plate and plane-of-array global insolations under standard "clear sky" conditions at any time and at any location on earth. Plane-of-array insolation implies the solar radiation received on the plane of the solar collector. Chapter 7-­૒ Solar Resource ECE 4364/5374G-5A (c) Saifur Rahman 6 Site elevation, latitude, longitude, Julian date, altitude and some location dependent atmospheric parameters are used for this purpose.

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