Recent content by quietfury

  1. Q

    How to calculate wind turbine output?

    Yeah, but like you said, it creates too much drag anyways, right? So it's definitely worse than no-turbine/belt-directly-attach-alternator...
  2. Q

    How to calculate wind turbine output?

    Yeah... So there's too many factors involved, just beyond my understnding. I'll probably ditch tthis topic. Thanks for your help though!
  3. Q

    How to calculate wind turbine output?

    Oh ok :) Thanks for your help
  4. Q

    How to calculate wind turbine output?

    Oh! I get it now. So, in the above example, instead of 'p output of alternator', if I say'power output of engine', is the rest of it correct?
  5. Q

    How to calculate wind turbine output?

    https://www.physicsforums.com/threads/wind-turbine-powering-alternator-of-car-instead-of-engine.789413/ Here is the full context of my question. (Just read the first post for some intro) The alternator will help charge the battery, however, which, in turn turns the wheels? So, if the...
  6. Q

    How to calculate wind turbine output?

    So the power output of the alternator doesn't come into play at all? Shouldn't the net power include that (since it's efficiency isn't 100%)?
  7. Q

    How to calculate wind turbine output?

    It was listed in this book I referred to. 0.6 is a constant for a lot of stuff which I didn't really understand, to be honest. Too far beyond my level. So, is the power formula correct? Should I use that one?
  8. Q

    How to calculate wind turbine output?

    Homework Statement Basically, a wind turbine's connected to a car alternator. weight of turbine=72 kg length of blade-30 cm. What is required, is the amt of power this wind turbine will produce when the car (to which turbine is attached) is moving at: a) constant speed b) variable speed...
  9. Q

    Wind turbine powering alternator of car instead of engine?

    I'm hugely confused now. That was wrong calculation, btw, the 2047.5 watt value. Here's my existing data: Alternator rotates, with 1200 rotations per minute. Considering efficiency of alternator to be approx. 50%, reqd. power supplied by turbine (power input for alt.)=approx. 1800W. Kinetic...
  10. Q

    Wind turbine powering alternator of car instead of engine?

    When the turbine is attached to the roof, reverse flow is reduced, right? Like I said, 450 mm is an ideal diameter which is 2047.5 watt. (Have I used the right formula here? I'm new to this concept)
  11. Q

    Wind turbine powering alternator of car instead of engine?

    okay, what if the turbine was placed on the car top? This will ensure the free flow of flow (as in wind mills). So, the reverse flow of the wind bounced back from the obstruction behind the turbine will not exist. (which is drag, right?) Now, if the diameter is 450 mm, the power output of...
  12. Q

    Wind turbine powering alternator of car instead of engine?

    So, my proposition is this: (Note that this is a purely theoretical project, and no models/experiments are necessary.) When a car moves forward, wind moves backward, right (relatively). So if we were to attach a small, retractable wind turbine to the side, connect it to the alternator, we could...
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