Hi
everyone,
For a
pilot project we are analyzing a heating system in which an
"external wall heating system" is installed on the façade.
Basically we have a wall with an active layer that is
insulated on the back in order to decrease the losses of
this active layer to the outside.
With a
pipe spacing of 13.5 cm the system was working good. For a
parametric study, I would like to run a study varying the
pipe spacing. Setting the pipe spacing to 10 cm (instead of
13.5 cm) the system does not simulate anymore. It gives me
the following error:
Message
: Specific fluid mass flow of active layer in surface 24
below minimum value of 8.01 kg/m2h Please, increase the
minimum mass flow rate or use the autosegmentation feature
of TRNBuild for subdividing the surface.
I
checked the massflow rate and I am sure that the mass flow
rate is higher than the minimum. I tried to increase the
massflow rate through the pump of the system but it does not
work. Which is the problem?
Here the
data of my simulation:
-
TRNSYS 17
-
Wall area: 10.16 m2
-
Massflow rate system:
86 kg/h
Toni
Calabrese,
MSc.
Wissenschaftlicher
Projektmitarbeiter
toni.calabrese@spf.ch |
toni.calabrese@ost.ch
T
+41 58 257 4827
SPF
Institut für Solartechnik
OST
– Ostschweizer Fachhochschule
Oberseestr.
10 | CH-8640 Rapperswil | Switzerland |
www.spf.ch |
www.ost.ch
OST
– Ostschweizer Fachhochschule ist der Zusammenschluss aus
FHS St.Gallen, HSR Rapperswil und NTB Buchs.