"Couldn't load plug-in" !! - Android A20 Tablet. I wonder if anyone else has realised that "Economy of Size" is opposite between Turbines and Alternators ? Viz: - One T of Twice the diameter replaces 4 previous - but weighs Eight times as much. T/f cost/watt is directly proportional to Diameter. Meanwhile the One large A tio replace the 4 previous costs only about Twice as much as any one of the 4. So Cost/watt of A is inversely related to Diameter. The lowest cost/watt can be seen to be for diameters in the range where the T costs about the same aas the A. By some rremarkable piece of Cosmic Serendipity ?, this diameter is not something silly such as an inch - or a mile - but lies in the very man-handleable range of about .5 to 1.5m diameter ! Building Turbine-Alternator Devices (TADs?) much outside this range is hard to justify on economic grounds. Such sizes can of course be attatched to existing wind-swept structures such as cross country power pylons. Good systems in this size region can return self-sustaining percentages (C10% p.a.) of their initial cost, a/o/2 the small fraction of 1% p.a returned by a typical "Windfarm".
"Couldn't load plug-in" !! - Android A20 Tablet.
ReplyDeleteI wonder if anyone else has realised that "Economy of Size" is opposite between Turbines and Alternators ? Viz: - One T of Twice the diameter replaces 4 previous - but weighs Eight times as much. T/f cost/watt is directly proportional to Diameter.
Meanwhile the One large A tio replace the 4 previous costs only about Twice as much as any one of the 4. So Cost/watt of A is inversely related to Diameter.
The lowest cost/watt can be seen to be for diameters in the range where the T costs about the same aas the A. By some rremarkable piece of Cosmic Serendipity ?, this diameter is not something silly such as an inch - or a mile - but lies in the very man-handleable range of about .5 to 1.5m diameter ! Building Turbine-Alternator Devices (TADs?) much outside this range is hard to justify on economic grounds. Such sizes can of course be attatched to existing wind-swept structures such as cross country power pylons.
Good systems in this size region can return self-sustaining percentages (C10% p.a.) of their initial cost, a/o/2 the small fraction of 1% p.a returned by a typical "Windfarm".