[Equest-users] Fuid-cooler has zero design flow
Miller, Jessica
JMiller at trojb.com
Wed Sep 19 12:08:47 PDT 2012
Thanks for responding Pasha. Yes-unfortunately it is a limitation of
eQUEST as mentioned in the manuals. I have a few other options I am
going to try but am doing a bit more reading up to see what makes sense.
From: Pasha Korber-Gonzalez [mailto:pasha.pkconsulting at gmail.com]
Sent: Wednesday, September 19, 2012 3:01 PM
To: Miller, Jessica
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Fuid-cooler has zero design flow
You might not be able to link these items together (restriction of
DOE-2), you should look in the DOE-2 manuals (Volume 2) under heat
rejection equipment and see if this equipment piece will connect to a
WLHP...sometime there are little details that DOE-2 won't let happen
exactly as you want it.
Hope this helps you a little.
Pasha
On Mon, Sep 17, 2012 at 9:24 AM, Miller, Jessica <JMiller at trojb.com>
wrote:
I am trying to attach a heat-rejection fluid-cooler to a WLHP
circulation-loop but my simulation keeps crashing out at 18% and I get
an error:
Loop: FC Water Loop CL 1 has zero design flow. Check input for
consistency, or specify design loads. Does anyone know what I might be
doing wrong?
Thank you!
I set the following properties:
"FC Loop Pump 1 CL" = PUMP
..
"CL Grnd Loop 1" = CIRCULATION-LOOP
TYPE = LAKE/WELL
LOOP-DESIGN-DT = 10
MIN-RESET-T = 65
..
"FC Water Loop CL 1" = CIRCULATION-LOOP
TYPE = WLHP
SUBTYPE = SECONDARY
PRIMARY-LOOP = "CL Grnd Loop 1"
LOOP-OPERATION = STANDBY
DESIGN-HEAT-T = 70
DESIGN-COOL-T = 85
COOL-SETPT-CTRL = FIXED
LOOP-PUMP = "FC Loop Pump 1 CL"
..
SET-DEFAULT FOR HEAT-REJECTION
TYPE = FLUID-COOLER
CAPACITY = 1.2863e+006
NUMBER-OF-CELLS = 1
CAPACITY-CTRL = VARIABLE-SPEED-FAN
COIL-LOSS = 252900
DESIGN-APPROACH = 7
DESIGN-WETBULB = 78
CW-STATIC-HEAD = 0
CW-FLOW-CTRL = VARIABLE-FLOW
SPRAY-KW/CELL = 2.2371
..
"WLHP Fluid Cooler 1" = HEAT-REJECTION
TYPE = FLUID-COOLER
CW-LOOP = "FC Water Loop CL 1"
..
Jessica K. Miller, EIT, LEED(r) AP
Associate
HVAC Engineering
TRO Jung|Brannen
22 Boston Wharf Road
Boston, Massachusetts 02210
t 617.502.3400
f 617.502.3401
www.trojungbrannen.com
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