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<DIV>Nat,</DIV>
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<DIV>You are correct. Power consumption for any centrifugal machine is function of the flow rate at the third power "called fan laws". Adding a properly design fan in the spinner would increase the power consumption. </DIV>
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<DIV>V. Bortone</DIV>
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<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: "Nat Penton" <natpenton@centurytel.net> <BR>
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<DIV><FONT face=Arial size=2>As Matt mentioned, the only way to use the spinner as an effective air mover is as a cetrifugal blower. This would call for an open nose, and the need for properly shaped vanes (as a third part ?).</FONT></DIV>
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<DIV><FONT face=Arial size=2>As I recall, power consumption ( volume ? ) is a function of the cube of the RPM. I need help here, its only been 60 years. Nat</FONT></DIV></BLOCKQUOTE></body></html>