CONTENTS

CHAPTER

Acknowledgement

Dedication

Abstract

INTRODUCTION

The b!eed For Harnessing Solar Enera

Fundaments 1 Concep t;s of Solar Radia tion

Origin of Solar Radiation

Ex tra-Terres trial Solar Radiation

The So lar Cons tan t

Spectral Distribution of Extra -Terres trial

Solar Radia tion

Terrestrial &am Insola tion

Diffuse Solar Radiation

Importance of Di f fuse Radiation in

Pho to -Vol taic Energy Conversion

SOUR RADIATIOZ &EASURIEG IETRUEhiTS

Radiation Sensors

Measurement of Direct Irradiance ( Pyrhe liome ters )

Types of Pyrheliome krs

Classification of Pyrheliometers

Calibration of Pyrheliometers

Measurement of Global Irradiance ( Pymnorce ters )

F~dern Pymnometers

Calibration of Pyranome ters

Pyranome ter Charac kri stics

2.8 Installation of Pyranmeters

FXPERXFZIJTAL DETAILS

Desim And Construction of The Pyranometer

Using Available -1 bhkrials

Them pile

Protective bx (Ins hen t Casing )

Glass Dome

Radia tfon Sensor

Insulating Stand

Call bra tion of The Pyrmome ter

3.3 Callbra tian Cons tan t

4.1 Salar Radiation Data For Nsukka As Measured With our Fyranome ter

4.2 Data Analysis And Discussion

4.3 Conclusion

4 .4 Suggestions For Further Work