With great interest, I have gone through the entire book within two
days. I must assert that your book is the most practical and most valuable
for those who want to manufacture small wind turbines. In very short, you
have explained theory and practice both really vividly. Your approach of
explaining the subject is really penetrating to the brain and it is highly
commendable. Even a layman can understand the subject very clearly. I am
sure that your book will play very important and effective role in disseminating
small wind technology throughout the world.
I convey my hearty feelings and many many congratulations for writing this most valuable book. I must admit that I have never come across such a nice and practical book as WIND POWER WORKSHOP. All the 8 chapters are very nice.
V K DESAI
TINYTECH PLANTS - INDIA
An Absolute Must-Have For Windmill Enthusiasts, July 11, 2002Reviewer: Bruce Boatner from Murrieta, CA USA This book contains real practicality, not just empty theory. Talk about "put your money where your mouth is" - Hugh lives on a remote spit of land in Northern Scotland that doesn't even have roads, much less access to the power grid. If necessity is the mother of invention, there's good reason why he was highly motivated to develop the kinds of simple airfoils and low speed alternator combinations that produced real power. This rudimentary experience has taken him all over the world for installations and workshops. I guess having someone like that around makes him a pretty popular guy with his neighbors.
This book covers the theory necessary to understand wind energy basics, and proceeds as a how-to manual on shaping a simple turbine out of wood. It then shows how to build a low speed alternator out of a brake drum. (There is another book by Hugh called "Brake Drum Windmill Handbook" which goes into more detail).
The challenge is building an electrical generating system that operates at the slow rotational speeds of a wind turbine (e.g. 300 - 500 RPM). Everybody wants to hook up an automobile alternator, but even if it is optimized for high output at an idle, it probably will not start producing power until it reaches 1800 RPM. (Typically the engine/alternator pulleys have a ratio of 3 or 3.5 to 1 and the engine idles @ 600 RPM).
A great little book.