Posted by RAB on July 24, 2008 at 01:16:40 from (195.93.21.10):
In Reply to: Wind power posted by Reddy red on July 23, 2008 at 20:41:29:
Work it out. Find the density of air and away you go. Work done is force multiplied by distance moved, in Newtons, metres kilograms in my case. Your units might be a bit more difficult - foots, pounds, BTU's etc.
Keep in mind Albert Betz, of course, who said you can't extract more than about 59% of the dynamic energy of the air, as you have to stop it to do that, as then there would be nowhere for the air to go without giving it back some kinetic energy!(probably not make any difference here but needs to be kept in mind by any potential wind turbine builders)
You will not find it much as you may, or probably may not, be aware that the typical brick house design is about 4 1/2 psi in your units.
Bales are a different problem. The force needed to roll a bale can be far less than picking it up against the force of gravity. That is why wheels were invented.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.