|
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. |