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<TITLE>DOE2.1E questions</TITLE>
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<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>Always
glad to help a fellow Chicagoan. Even though I now live in
California.</FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>Back
in the days I did energy modeling for Hilton Hotels, I would always divide the
hotel Guest Tower up into several levels of occupancy. Since only one side of a
typical hotel room faces the external (solar/transmission) and hotels rooms
usually have drapes closed, I didn't worry too much about outdoor fenestration
or transmission conditions versus the effect of internal load and, of course,
outside air on the room.</FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>I then
divided the hotel guest rooms up into three or four (as many as six)
occupied levels, as hotel occupancies are roller coasters of conventions,
holiday periods, and every else in between. I made a group of guest rooms fully
occupied, and a group partially occupied, and a third group lightly occupied
(assuming a three way division).</FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>I then
chose the FOUR PIPE INDUCTION system for my HVAC. This system allows for Primary
AND Secondary heating and cooling coils. The Primary coils would temper the
outside airflow, and the secondary would attack the combination of the primary
tempered and the induced room air. The Induction ratio became the ratio of all
fan coil airflow (say 500 guest room x 200 CFM/fan coil) to the total outside
air.</FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>This
is direct ventilation of the guest rooms and/or the corridor are pulled into the
guest room and further treated by the fan coils. And exhaust air is permitted in
this SYSTEM-TYPE.</FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>High
rise apartment living areas can be handled in the same way. </FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff size=2>I
thank Bruce Birdsall, one of the original DOE-2 developers at Lawrence Berkeley
Labs for teaching me this trick.</FONT></SPAN></DIV>
<DIV><SPAN class=225101720-27082002><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=225101720-27082002>
<DIV><FONT color=#0000ff size=4><STRONG>John R. Aulbach, PE,
CEM</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Project Engineer</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Sempra Energy Solutions</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>555 West Fifth Street</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Mail Location 27F3</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Los Angeles, CA 90013</STRONG></FONT></DIV>
<DIV><FONT size=2><STRONG>Tel: (213) 244-8551 Beeper (888)
520-1051</STRONG></FONT></DIV>
<DIV><STRONG><FONT size=2></FONT></STRONG> </DIV>
<P align=left><B><FONT face="Courier New" size=1>"Sempra Energy Solutions is not
the same company as SDG&E/ SoCalGas, the Utilities. Sempra Energy
Solutions is not regulated by the California Publi</FONT><FONT
face="Courier New" size=1>c Utilities Commission, and you do not have to buy
Sempra Energy Solutions products or services to continue to receive quality
regulated service from the Utilities."
</FONT></B></P></SPAN></DIV><PRE>
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