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<DIV><FONT face=Arial size=2>Steve,</FONT></DIV>
<DIV><FONT face=Arial size=2>Thanks for this update.</FONT></DIV>
<DIV><FONT face=Arial size=2>Two additional questions:</FONT></DIV>
<DIV><FONT face=Arial size=2>1) will the new version of DOE2.2 that models the
screw chillers and the VFD chillers be incorporated into PowerDOE? (maybe a
question for Jeff Hirsch)</FONT></DIV>
<DIV><FONT face=Arial size=2>2) are there / will there be any default curves for
air-cooled screw chillers? I have been trying to model this without much
success so far. I created my own curves, but the results don't appear to
make sense. When I created an output report, the modified values of EIR
based on my curves made good sense, but the chiller kW that is being shown makes
no sense at all. I haven't finished debugging this yet, but wonder if
anyone has any suggestions.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><BR>Sincerely,</DIV>
<DIV> </DIV>
<DIV>Alec Stevens<BR>DMI<BR>p: 617-527-1525x105<BR>f: 617-527-6606<BR>e: <A
href="mailto:astevens@dmiinc.com">astevens@dmiinc.com</A><BR></FONT></DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=stvgates@pacbell.net href="mailto:stvgates@pacbell.net">Steve
Gates</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=BLDG-SIM@gard.com
href="mailto:BLDG-SIM@gard.com">BLDG-SIM@gard.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, January 16, 2002 3:31
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [BLDG-SIM] Screw chiller
performance curves</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>James Hirsch & Associates is currently
implementing new chiller algorithms in DOE-2, and defaults performance
curves for screw chillers will be included. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT face=Arial size=2>For both reciprocating
and screw chillers, the program will use different performance curves
depending on the number of compressors in the machine. The program will also
model centrifugal chillers with variable-speed drives. </FONT>Since some of
these curves utilize new types of CURVE-FITS, they require a new version
of DOE-2.2 which won't be released for another month or two.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>In the meantime, for current versions of DOE-2.2,
the following models a water-cooled screw:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><SPAN style="mso-fareast-font-family: 'MS Mincho'"><FONT size=2><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT size=2>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New">"ScrewH2O-Cap-fCHWT&LCT" = CURVE-FIT<SPAN
style="mso-spacerun: yes">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>TYPE =
BI-QUADRATIC-T<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>INPUT-TYPE =
DATA<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>IN-TEMP1 = ( 44.0, 44.0, 44.0,
44.0, 44.0,<SPAN style="mso-spacerun: yes"> </SPAN>$ CHW
T<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>48.0, 48.0, 48.0, 48.0, 48.0,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>52.0, 52.0, 52.0, 52.0, 51.0,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>40.0, 40.0, 40.0, 40.0, 40.0)<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>IN-TEMP2 = ( 85.0, 75.0, 70.0,
95.0, 100.,<SPAN style="mso-spacerun: yes"> </SPAN>$
ECT<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>85.0, 75.0, 70.0, 95.0, 100.,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>85.0, 75.0, 70.0, 95.0, 100.,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>85.0, 75.0, 70.0, 95.0, 100.)<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>OUTPUT<SPAN
style="mso-spacerun: yes"> </SPAN>= (<SPAN
style="mso-spacerun: yes"> </SPAN>1.00, 1.07, 1.10, 0.92, 0.89,<SPAN
style="mso-spacerun: yes"> </SPAN>$ Capacity
ratio<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>1.09, 1.16, 1.18, 1.00, 0.96,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>1.18, 1.24, 1.26, 1.09, 1.05,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>0.92, 0.99, 1.02, 0.85, 0.83)<SPAN style="mso-spacerun: yes">
</SPAN>..<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New"> <o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New">"ScrewH2O-EIR-fCHWT&LCT" = CURVE-FIT<SPAN
style="mso-spacerun: yes">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>TYPE =
BI-QUADRATIC-T<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>INPUT-TYPE =
DATA<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>IN-TEMP1 = ( 44.0, 44.0, 44.0,
44.0, 44.0,<SPAN style="mso-spacerun: yes"> </SPAN>$ CHW
T<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>48.0, 48.0, 48.0, 48.0, 48.0,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>52.0, 52.0, 52.0, 52.0, 51.0,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>40.0, 40.0, 40.0, 40.0, 40.0)<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>IN-TEMP2 = ( 85.0, 75.0, 70.0,
95.0, 100.,<SPAN style="mso-spacerun: yes"> </SPAN>$
ECT<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>85.0, 75.0, 70.0, 95.0, 100.,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>85.0, 75.0, 70.0, 95.0, 100.,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN><SPAN style="mso-spacerun: yes"> </SPAN>85.0,
75.0, 70.0, 95.0, 100.)<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>OUTPUT<SPAN
style="mso-spacerun: yes"> </SPAN>= (<SPAN
style="mso-spacerun: yes"> </SPAN>1.00, 0.85, 0.78, 1.20, 1.31,<SPAN
style="mso-spacerun: yes"> </SPAN>$ EIR
ratio<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>0.94, 0.81, 0.74, 1.13, 1.24,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>0.90, 0.77, 0.71, 1.07, 1.17,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes">
</SPAN>1.06, 0.89, 0.82, 1.27, 1.39)<SPAN style="mso-spacerun: yes">
</SPAN>..</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New"></FONT></SPAN> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New">$ Two
circuits, one compressor/circuit</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><o:p><FONT
face="Courier New"></FONT></o:p></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New">"ScrewH2O-EIR-fPLR&dT-1Comp/Ckt" = CURVE-FIT
<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>TYPE =
QUADRATIC<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>INPUT-TYPE =
DATA<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>INPUT<SPAN
style="mso-spacerun: yes"> </SPAN><SPAN
style="mso-spacerun: yes"> </SPAN>= ( 1.00, 0.75, 0.50, 0.25,
0.10)<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>OUTPUT<SPAN
style="mso-spacerun: yes"> </SPAN>= (<SPAN
style="mso-spacerun: yes"> </SPAN>1.00, .906, .538, .332, .141)<SPAN
style="mso-spacerun: yes"> </SPAN>..<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New"> <o:p></o:p></FONT></SPAN></P><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New">
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New">$ Two
circuits, two compressors/circuit</FONT></SPAN></P>
<P class=MsoPlainText
style="MARGIN: 0in 0in 0pt">"ScrewH2O-EIR-fPLR&dT-2Comp/Ckt" =
CURVE-FIT<SPAN style="mso-spacerun: yes">
</SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>TYPE = QUADRATIC<SPAN
style="mso-spacerun: yes">
</SPAN><SPAN
style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>INPUT-TYPE =
DATA<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>INPUT <SPAN
style="mso-spacerun: yes"> </SPAN><SPAN
style="mso-spacerun: yes"> </SPAN><SPAN
style="mso-spacerun: yes"> </SPAN>= ( 1.00, 0.75, 0.50, 0.25,
0.10)<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"><SPAN
style="mso-spacerun: yes"> </SPAN>OUTPUT<SPAN
style="mso-spacerun: yes"> </SPAN>= (<SPAN
style="mso-spacerun: yes"> </SPAN>1.00, .842, .664, .289, .151)<SPAN
style="mso-spacerun: yes"> </SPAN>..<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText
style="MARGIN: 0in 0in 0pt"></FONT></SPAN></FONT></SPAN><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT size=2><FONT
face="Courier New"></FONT></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2></FONT></SPAN> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT size=2><FONT
face="Courier New">"A Generic Screw Chiller" =
CHILLER</FONT></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2>
TYPE =
ELEC-HERM-REC</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT size=2><FONT
face="Courier New"> ELEC-INPUT-RATIO =
.202</FONT></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2> CAPACITY-FT = <SPAN
style="mso-fareast-font-family: 'MS Mincho'">"ScrewH2O-Cap-fCHWT&LCT"</SPAN></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2>
EIR-FT = <SPAN
style="mso-fareast-font-family: 'MS Mincho'">"ScrewH2O-EIR-fCHWT&LCT"</SPAN></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2> EIR-FPLR =
<SPAN style="mso-fareast-font-family: 'MS Mincho'"><FONT
face="Courier New">"ScrewH2O-EIR-fPLR&dT-1Comp/Ckt"</FONT></SPAN></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2> etc.</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2> ..</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT face="Courier New"
size=2> </FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN
style="mso-fareast-font-family: 'MS Mincho'"><FONT size=2><FONT
face="Courier New"></FONT></FONT></SPAN> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Arial size=2>Hope
this helps!</FONT></P></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV></BLOCKQUOTE><PRE>
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