[Bldg-sim] Reset Boiler supply temp based on OA

[Bishop, Bill]

Allison,
 
Here are portions of the .inp file from an eQUEST model where I followed
the G3.1.3.4 requirement.
 
Regards,
Bill
 
 
"Hot-Water Supply Temp Reset" = DAY-SCHEDULE-PD
   TYPE             = RESET-TEMP
   OUTSIDE-HI       = 50
   OUTSIDE-LO       = 20
   SUPPLY-HI        = 180
   SUPPLY-LO        = 150
   ..
 
"Hot-Water Supply Temp Reset Week" = WEEK-SCHEDULE-PD
   TYPE             = RESET-TEMP
   DAY-SCHEDULES    = ( "Hot-Water Supply Temp Reset" )
   ..
 
"Hot-Water Supply Temp Reset Sch" = SCHEDULE-PD
   TYPE             = RESET-TEMP
   MONTH            = ( 12 )
   DAY              = ( 31 )
   WEEK-SCHEDULES   = ( "Hot-Water Supply Temp Reset Week" )
   ..
 
"Hot Water Loop" = CIRCULATION-LOOP
   TYPE             = HW
   LOOP-DESIGN-DT   = 50
   PIPE-HEAD        = 21.6
   LOOP-OPERATION   = DEMAND
   DESIGN-HEAT-T    = 180
   HEAT-SETPT-CTRL  = OA-RESET
   HEAT-RESET-SCH   = "Hot-Water Supply Temp Reset Sch"
   LOOP-PUMP        = "HW Loop pump"
   ..
 
William Bishop, EIT, LEED(r) AP | Pathfinder Engineers & Architects LLP
Mechanical Engineer
 
134 South Fitzhugh Street
Rochester, NY 14608
T: (585) 325-6004 Ext. 114
F: (585) 325-6005
wbishop at pathfinder-ea.com
www.pathfinder-ea.com
P Please strive to live sustainably.             
________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Gaiko
Allison
Sent: Thursday, February 04, 2010 10:34 AM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] Reset Boiler supply temp based on OA
 
Does anyone know how to model the boiler hot water supply temperature to
reset based on OA temp with Visual DOE?  Or does anyone know how to
program it directly into the DOE-2 input?  I am trying to meet the
ASHRAE 90.1-2004 section G3.1.3.4 requirement.
 
Allison Gaiko, PE, LEED AP
HVAC Engineer
 
 A|H|A Consulting Engineers
Boston  * Atlanta  * Washington, DC
24 Hartwell Ave, Third Floor, Lexington  MA, 02421
781- 372-3000(p) : 781-372-3100(f)
http://www.aha-engineers.com <http://www.aha-engineers.com/> 
Allison_Gaiko at aha-engineers.com
 
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