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<P><FONT size=2><FONT face="Courier New">Hi Karen,<BR><BR>Without seeing all the
details, its hard to offer specific recommendations. However one thing I
would be sure to do is a reality check -- following is a report from a nifty
outside air load estimator that I just found earlier today in the course of
doing something else (see <A
href="http://elcca-exchange.blogspot.com/2007/11/outdoor-air-load-estimator.html">this
post</A>) which, after running your numbers through it, gives cause for
double-checking your calculated $450,000 per year savings (again, see post for
details).</FONT></FONT></P>
<P><FONT face="Courier New" size=2>HTH</FONT></P>
<P><FONT face="Courier New" size=2>Brandon</FONT><FONT size=2><FONT
face="Courier New"></P>
<P><BR><BR><BR>********************************************************************************************<BR><BR>Result
summary for Calculation Number:
5<BR>Location:
BURLINGTON,
Vermont<BR>Elevation:
341 ft<BR>Operating Hours: 0:00 o'clock until 0:00
o'clock<BR>Hours of Operation: 24<BR>Makeup Air
Flow: 183000 cfm<BR>Thermostat Setpoints: Heating
= 68 F, Cooling = 72 F<BR><BR>Dehumidification was set to limit the Relative
Humidity to: No Dehumidification<BR><BR>Heating was locked out during:
--<BR>Cooling was locked out during: --<BR><BR>The Lockout of Heating or Cooling
systems resulted in...<BR> Insufficient Heating during: --<BR>
Insufficient Cooling during: --<BR><BR>The Heating Design Load is: 18891.3
kBtu/h<BR>The Cooling Design Load is: 4754.9 kBtu/h<BR><BR>Calculated Monthly
loads:<BR>Month
Heating Load
Cooling Load<BR>January :
7,847,593 kBtu
0
kBtu<BR>February : 7,329,964
kBtu
0
kBtu<BR>March :
6,296,320 kBtu
0
kBtu<BR>April :
3,911,545 kBtu
28,900
kBtu<BR>May :
1,574,753 kBtu
97,140
kBtu<BR>June :
889,352 kBtu
128,736
kBtu<BR>July :
399,761 kBtu
382,194 kBtu<BR>August
: 532,923
kBtu 221,369
kBtu<BR>September : 1,517,449
kBtu 33,329
kBtu<BR>October :
2,836,548 kBtu
0
kBtu<BR>November : 4,821,821
kBtu
0
kBtu<BR>December : 6,956,354
kBtu
0
kBtu<BR>Total_Year : 44,914,382
kBtu 891,668
kBtu<BR><BR>FAN ENERGY
CALCULATIONS:<BR>
Supply
Exhaust<BR>Total Static
Pressure: 3.5 inW
1.0 inW<BR>Fan
Type:
Forward_Curved Forward_Curved<BR>Fan
Efficiency:
63.0 %
63.0 %<BR>Motor
Class:
Standard
Standard<BR>Motor
Efficiency: 91.0
%
89.0 %<BR>Motor Output Power: 159.032
HP 45.438 HP<BR>Moter
Rated Input: 130.319
kW 38.071 kW<BR>Motor
Energy Consumption: 1141594 kWh
333499
kWh <BR>********************************************************************************************<BR><BR><BR>Brandon
Nichols, PE, LEED® AP<BR>Mechanical<BR>HARGIS ENGINEERS<BR>600 Stewart
Street<BR>Suite 1000<BR>Seattle, WA 98101<BR>www.hargis.biz<BR><BR><BR>d |
206.436.0400 c | 206.228.8707<BR>o | 206.448.3376 f |
206.448.4450<BR><BR><BR><BR>-----Original Message-----<BR>From:
BLDG-SIM@gard.com [</FONT><A href="mailto:BLDG-SIM@gard.com"><FONT
face="Courier New">mailto:BLDG-SIM@gard.com</FONT></A><FONT face="Courier New">]
On Behalf Of Karen Walkerman<BR>Sent: Friday, November 09, 2007 7:09 AM<BR>To:
BLDG-SIM@gard.com<BR>Subject: [BLDG-SIM] one more thing about ERVs in
eQuest<BR><BR>Also, how does one properly model an ERV for a system that is not
100% outdoor air? How does it get modeled if the ventilation is demand
controlled?<BR><BR>--<BR>Karen Walkerman<BR>Second
Law<BR><BR>======================================================<BR>You
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