Greystoke wrote:Let me explain what I’m contemplating:
I’ve been thinking of using a wind turbine to power a geyser, by connecting it directly to the heating element. . . .
It's easier to make circular coils. You can also make them very precise. I was thinking of making the coils in two parts, each on either side of the stator disc and exposed to the airflow created by the circulating magnets.windgat wrote: . . .And why are you still on discs... I thought we agreed discs are not the best shape for maximising voltage?
I'll check it out now.windgat wrote: . . .How do you get a rpm of 458 at 8m/s? I get 225rpm. Have you perchance confused radius and diameter in you calculation of circumference?
Generator output is based on the open coil voltage. It's a bit difficult to work out the loaded voltage. I'm working on that.windgat wrote:And do you know the generator efficiency? I.e. mechanical to electrical conversion (or can you estimate?).
r l f (rads) f° b° C b C
(IDEAL) (IDEAL) (LINEAR) (LINEAR)
1980 6.00 0.1107 6.3402 0.3402 152.8800 -0.3348 137.4759
1881 5.70 0.1164 6.6710 0.6710 160.7673 0.3516 153.4893
1782 5.40 0.1228 7.0379 1.0379 169.5027 1.0379 169.5027
1683 5.10 0.1300 7.4474 1.4474 179.2288 1.7243 185.5161
1584 4.80 0.1380 7.9072 1.9072 190.1214 2.4107 201.5295
1485 4.50 0.1471 8.4270 2.4270 202.3998 3.0970 217.5429
1386 4.20 0.1574 9.0193 3.0193 216.3405 3.7834 233.5563
1287 3.90 0.1693 9.7004 3.7004 232.2969 4.4697 249.5697
1188 3.60 0.1831 10.4915 4.4915 250.7262 5.1561 265.5831
1089 3.30 0.1993 11.4212 5.4212 272.2298 5.8424 281.5965
990 3.00 0.2187 12.5288 6.5288 297.6099 6.5288 297.6099
891 2.70 0.2421 13.8697 7.8697 327.9541 7.2152 313.6233
792 2.40 0.2709 15.5241 9.5241 364.7573 7.9015 329.6367
693 2.10 0.3074 17.6126 11.6126 410.0912 8.5879 345.6501
594 1.80 0.3547 20.3231 14.3231 466.8029 9.2742 361.6635
495 1.50 0.4182 23.9625 17.9625 538.5840 9.9606 377.6769
396 1.20 0.5071 29.0546 23.0546 629.1040 10.6470 393.6903
297 0.90 0.6375 36.5289 30.5289 736.5322 11.3333 409.7037
198 0.60 0.8380 48.0128 42.0128 827.4440 12.0197 425.7171
99 0.30 1.1479 65.7723 59.7723 736.9157 12.7060 441.7304
0 0.00 0.0000 0.0000 0.0000 0.0000 0.0000 0.00
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