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
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
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.