[Equest-users] Condenser loop control?

[Bishop, Bill]

There is even more information in DOE-2 Help under Volume 2: Dictionary
<mk:@MSITStore:C:\Documents%20and%20Settings\bbishop\My%20Documents\eQUE
ST%203-64%20Data\Help\DOE-2.chm::/Docs/volume2dictionary.htm>  > HVAC
Components
<mk:@MSITStore:C:\Documents%20and%20Settings\bbishop\My%20Documents\eQUE
ST%203-64%20Data\Help\DOE-2.chm::/Docs/hvaccomponents.htm>  > 
HEAT-REJECTION
<mk:@MSITStore:C:\Documents%20and%20Settings\bbishop\My%20Documents\eQUE
ST%203-64%20Data\Help\DOE-2.chm::/Docs/heatrejection1.htm>  > 
Temperature Control in Cooling Towers
<mk:@MSITStore:C:\Documents%20and%20Settings\bbishop\My%20Documents\eQUE
ST%203-64%20Data\Help\DOE-2.chm::/Docs/temperaturecontrolincoolingtowers
.htm> . However, I don't see any commands that let you control the loop
or tower using wet-bulb temp, only the dry-bulb temp using OA-RESET.
 
Bill
 
William Bishop, PE, BEMP, 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
<http://www.pathfinder-ea.com/> 
P   Sustainability - the forest AND the trees. P 
________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Carol
Gardner
Sent: Friday, November 19, 2010 11:53 AM
To: Chris Jones
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Condenser loop control?
 
The commands you are looking for are for the cooling tower. See below.

Carol
  
Volume 2: Dictionary > HVAC Components > CIRCULATION-LOOP > Loop
Temperature Control

COOL-SETPT-CTRL

Code word specifies the loop temperature control sequence:
FIXED                         specifies that the loop supply temperature
is controlled to a fixed value, specified by the COOL-SEPT-T
OA-RESET                   specifies that the loop supply temperature is
reset on outdoor air according to the COOL-RESET-SCH.
SCHEDULED                specifies that the loop supply temperature is
controlled to a schedule specified by the COOL-SETPT-SCH.
LOAD-RESET               specifies that the loop supply temperature is
reset so that the valve of the worst-case coil is fully open. The
minimum reset temperature for a cooling-type loop is MIN-RESET-T.
LOAD-RESET is applicable to any loop serving a chilled-water coil (CHW,
PIPE2). It is also applicable to a condenser-water loop; here this
control mode will enable the cooling tower temperature to float with the
load and wet-bulb temperature as described in the cooling tower
sections. 
                                  Since a WLHP loop also uses a cooling
tower, LOAD-RESET is applicable to the heat-rejection side of a WLHP
loop. It does not apply, however, to the heating setpoint of a WLHP
loop. 
                                  This mode maximizes the efficiency of
the primary equipment and minimizes the loop's thermal losses (but at
the expense of pumping energy in a variable-flow loop). Refer to
LOOP-FLOW-RESET for information on how to minimize the pumping penalties
associated with this control scheme.
 
On Fri, Nov 19, 2010 at 5:26 AM, Chris Jones <cj at enersave.ca> wrote:
I believe that the CONT-SETPT-CTRL = VARIABLE provides similar control?


At 08:16 AM 19/11/2010, Brian Fountain wrote:
	In DOE-2.1e, you had the option of condenser loop control by
wet-bulb reset.  I cannot figure out how to do that in DOE-2.2.  Any
suggestions or was this option lost in the combining of systems &
plants.
	
	
	
	_______________________________________________
	Equest-users mailing list
	
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org 
	To unsubscribe from this mailing list send  a blank message to 
EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG

Chris Jones
14 Oneida Avenue
Toronto, ON M5J 2E3.
Tel.  416-203-7465
Fax. 416-946-1005

_______________________________________________
Equest-users mailing list
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
To unsubscribe from this mailing list send  a blank message to 
EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG



-- 
Carol Gardner PE
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20101119/aa744f67/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 2412 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20101119/aa744f67/attachment.jpeg>