<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Having designed and tested fan cooling for my company's central
office equipment (think telephone & internet), I know that 20
watts will barely get me to the neighborhood of 200 feet per minute
in a small portion of a guided box. And that's quite a wind. I
can't imagine a ceiling fan getting anywhere close to 200 feet per
minute.<br>
Also I would point out that the sensible cooling effect of a
wind/breeze is a very strong function of the humidity - just ask all
those folk who weathered the recent heat waves how much a wind
helped when the humidity was upwards from 90%.<br>
Joe<br>
<br>
<br>
On 8/31/2011 6:55 AM, Sacie Lambertson wrote:
<blockquote
cite="mid:CAM6L0t5wBwBPA=e-z1t5CYOqR=8gkJwhOpu7+aj_pm9Bfwvsjw@mail.gmail.com"
type="cite"><font size="4"><font face="tahoma,sans-serif">John,
honing in on that last bit regarding the fan moving at 200 mph
over a body, what is the speed of a ceiling fan--at the low,
middle and high speed? Just curious.<br>
<br>
We use fans a whole lot in our open high ceiling house, both
in the summer and in the winter. In the latter case, the
ceiling fans seem to help distribute heat from a stove
source. Last year when there was some discussion on this list
about the efficacy of this method of distribution, I tried
unsuccessfully to measure the effects. Surely the greater
warmth I feel down below is not my imagination?<br>
<br>
Thanks, Sacie<br>
</font></font><br>
<div class="gmail_quote"><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
John wrote:<br>
<i><br>
A fan, using say 20 Watts blowing air at 200 feet per
minute over a persons body, would make a house at 80 F feel
like it is 72F to a person lightly dressed.<br>
</i>
<div>
<div class="h5"><i><br>
</i>
<br>
<br>
</div>
</div>
</blockquote>
</div>
<pre wrap="">
<fieldset class="mimeAttachmentHeader"></fieldset>
_______________________________________________
Greenbuilding mailing list
to Send a Message to the list, use the email address
<a class="moz-txt-link-abbreviated" href="mailto:Greenbuilding@bioenergylists.org">Greenbuilding@bioenergylists.org</a>
to UNSUBSCRIBE or Change your List Settings use the web page
<a class="moz-txt-link-freetext" href="http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org">http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org</a></pre>
</blockquote>
</body>
</html>