Solar Energy Thermal Processes,

This book should be part of your library. It is more technical then someone would expect but it is a great reference book and study material. Worth money.

This book is a must for the Solar Thermal Engineer. It is very comprehensive and covers a very wide range of topics. Excellent work by Duffie and Beckman.

This is the best book to have an initial view about solar energy and its aplicattion.

This is the textbook of fundamentals of solar energy engineering.

The second edition of "Solar Engineering..." is a much expanded and updated version of the original, which was already a decent textbook. It covers almost everything there is to know about engineering of solar energy systems, and the presentation is clear and well organized. The division into "basics" and "applications" sections is a very sensible way to get oriented before plunging into the depth of a specific technology, especially since solar thermal applications tend to cover a wide variety of technologies. The gradual and systematic approach makes this book a very good textbook for beginners. The wide scope makes it also a pretty good reference source for practitioners who are looking for a specific bit of information. The new chapter on photovoltaic cells is a nice touch. While this is not a "thermal process," it is still important for any practitioner of solar thermal to know what's happening in the other corner of the field. A presentation of PV at the level that can be understood by non-physicists is a very welcome addition.My only complaint is that recent significant developments are not well represented (I guess much of this developed after the book was written, so this complaint is not really aimed at the authors). Topics such as non-imaging concentrators, high-temperature thermal receivers for Brayton cycle, and solar chemistry are either briefly mentioned or absent altogether. The more traditional applications such DHW are of course presented in detail, but their significance to the energy market remains negligible. I would prefer to see more on applications that have the potential to make a major impact. Hopefully this will be included in the next edition...