<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=us-ascii" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19088"></HEAD>
<BODY>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011>I am trying to determine
the effect of increasing the chilled water delta T on the energy consumption in
an office building. </SPAN></FONT><FONT face=Calibri><SPAN
class=252271215-09082011>I set up 2 <FONT face=Calibri><SPAN
class=252271215-09082011>models, </SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011>one with 10 deg delta T, and the other increased to 15
deg on the chilled water loop (elec. centrifugal chiller was used). <SPAN
class=252271215-09082011>All other parameters are same
</SPAN></SPAN></FONT></SPAN></FONT><FONT face=Calibri><SPAN
class=252271215-09082011><FONT face=Calibri><SPAN class=252271215-09082011><SPAN
class=252271215-09082011>in both
models.</SPAN></SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011><SPAN
class=252271215-09082011></SPAN></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011><SPAN class=252271215-09082011>The results show a drop
of ~14% in pump energy, but they also show a reduction on both the cooling
(~6%) and heat rejection (~3%). </SPAN></SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011><SPAN class=252271215-09082011>Why does the
increase in chilled water delta T show savings on these 2 other
end-uses? </SPAN></SPAN></FONT></SPAN></FONT><FONT face=Calibri><SPAN
class=252271215-09082011><FONT face=Calibri><SPAN class=252271215-09082011><SPAN
class=252271215-09082011></SPAN></SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011><SPAN
class=252271215-09082011></SPAN></SPAN></FONT></SPAN></FONT> </DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011><SPAN class=252271215-09082011>Thanks for any
help</SPAN></SPAN></FONT></SPAN></FONT></DIV>
<DIV><FONT face=Calibri><SPAN class=252271215-09082011><FONT face=Calibri><SPAN
class=252271215-09082011><SPAN
class=252271215-09082011></SPAN></SPAN></FONT></SPAN></FONT> </DIV></BODY></HTML>