[bldg-sim] Cooling Tower Wet Bulb Reset

[Alec Stevens]

Gerald,

In my experience with PowerDOE, we've simulated wetbulb reset using a reset
control on the condenser loop setpoint, but my memory is that you can only
have a reset schedule based on drybulb.  We developed drybulb reset
schedules that approximated the desired wetbulb function, and then checked
the reasonableness of the schedules by developing hourly reports for
wetbulb, setpoint, and actual loop temp.

One recollection was that in PowerDOE, the descriptions of the input
variables in the reset schedule were very counterintuitive, so the hourly
report was a good way to debug this as well.  

Hopefully this is applicable to your situation in eQuest.
Sincerely,
Alec Stevens, PE, LEED AP
DMI
450 Lexington St., Newton, MA 02466
p: 617-527-1525 x105 f: 617-527-6606
e: astevens at dmiinc.com


-----Original Message-----
From: bldg-sim at gard.com [mailto:bldg-sim at gard.com] On Behalf Of Gerald Pde
Sent: Friday, February 03, 2006 6:15 PM
To: bldg-sim at gard.com
Subject: [bldg-sim] Cooling Tower Wet Bulb Reset

Hi All,
This is regarding Wet bulb reset controls for cooling
towers. I think DOE 2.1 has specific keyword for WB
control for cooling towers. However in EQUEST, does
load reset in a condensor water loop similar in
operation to a WB reset?
Your inputs are appreciated.
Gerald

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

======================================================
You received this e-mail because you are subscribed 
to the BLDG-SIM at GARD.COM mailing list.  To unsubscribe 
from this mailing list send a blank message to 
BLDG-SIM-UNSUBSCRIBE at GARD.COM



======================================================
You received this e-mail because you are subscribed 
to the BLDG-SIM at GARD.COM mailing list.  To unsubscribe 
from this mailing list send a blank message to 
BLDG-SIM-UNSUBSCRIBE at GARD.COM