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<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial>All:</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>I've come across
some poorly documented simplified methods for accounting for latent portion of
annual ventilation/infiltration loads. The fundamental equations used in
the method include a term defined as a "Humidity
Factor". </FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>It appears that, at
one time, by someone, a 'Humidity Factor' was calculated for each TMY2 site.
>From what I can gather (I have a table by TMY2 city) the 'Humidity Factor' for
the TMY2 data set ranged from a maximum of 3.83 (Guam) to a minimum of 1
(Pheonix, AZ, Fairbanks, AK and several other sites with low humidity climates).
As an intermediate point - Louisville, KY's Humidity Factor is 2.27.
</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial></FONT></SPAN><SPAN
class=296055615-19102009><FONT size=2 face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>I'd like to
understand how a 'Humidity Factor' is determined for a given TMY2 dataset
(again, poor documentation). My web-searches have returned examples where others
have used this factor in various energy estimating methods - but I have found no
one who has sourced the derivations. </FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>Does anyone out
there recall the fundamental method(s) used to derive the 'Humidity
Factor'? </FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>Deep thanks in
advance for ANY assistance,</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial>_Chris</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>Chris Balbach, CEM,
PE, LEED AP</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>Vice President of
Research and Development</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>Performance Systems
Development </FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>124 Brindley Street,
Suite 4, Ithaca NY 14850</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial><A
href="http://www.psdconsulting.com">http://www.psdconsulting.com</A></FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2 face=Arial>ph:
(607)-327-1647</FONT></SPAN></DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=296055615-19102009><FONT size=2
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