Latest revision as of 17:39, 29 March 2019

Background

Tower and turbine - cost design thesis - [1]. Minimum tubular towers are 1.5m, max 5 m wide.
Civil engineering costs - $134k for 750 kw tower

Take a tower 1/4" thick, 5' wide, and 100' tall.
Weight is 8500kg/m3 for steel.
1/4"*2*pi*60"*1200"=100k cubic inches, about 2 cubic meters.
About 16,000 lb weight. This tower would thus cost about $25k in welding.
Would take 1000 hours with 1 welder. 200 hours with 5 welders (100kW). 200 hours/24 = 8 days per tower with 5 welders.
40 days with 1 welder. 5 welders make it practical for Extreme Manufacturing.
Now, this assumes that a 5' diameter tower, 1/4" thick will suffice for a 250 kW turbine head.

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-*Tower design thesis - [https://scholarworks.uark.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=1070&context=meeguht\]. Minimum tubular towers are 1.5m, max 5 m wide.
+=Background=
+*Tower and turbine - cost design thesis - [https://scholarworks.uark.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=1070&context=meeguht\]. Minimum tubular towers are 1.5m, max 5 m wide.
 *Civil engineering costs - $134k for 750 kw tower
+=250 kW Turbine=
+*Take a tower 1/4" thick, 5' wide, and 100' tall.
+*Weight is 8500kg/m3 for steel.
+*1/4"*2*pi*60"*1200"=100k cubic inches, about 2 cubic meters.
+*About 16,000 lb weight. This tower would thus cost about $25k in welding.
+*Would take 1000 hours with 1 welder. 200 hours with 5 welders (100kW). 200 hours/24 = 8 days per tower with 5 welders.
+*40 days with 1 welder. 5 welders make it practical for [[Extreme Manufacturing]].
+*Now, this assumes that a 5' diameter tower, 1/4" thick will suffice for a 250 kW turbine head.