Polysun Simulation Software Community

Dear ragamounika22, it seems that you have more than one pump in a hydronic circuit (maybe two pumps in series) which is not allowed in Polysun. Please be aware that the hydronic circuits needs to be defined that you can generate in each of them a clear flow. I hope this helps you, if not please sen...

Hi Zaideus, to d a comparison with different software is always tricky. Anyway I think I can give you a valuable hint. First of all I think your system and your control strategy are alright. You write that you have an amount of thermal energy to the system of 51.430 kWh divided by 20 kW it equals ro...

Dear ragamounika22, first of all your results seem to be alright. The warning appears because you didn't deliver the required energy demand to your building there can be several reasons for that. I recommend to check following: - size of the heat pump - size of heat exchangers - why does the max. te...

dear ragamounika22,

please have a look a the tutorial http://www.velasolaris.com/files/tutorial_en.pdf from page 178.

BR Lars

Hallo Frau Jürges, in Polysun funktioniert der Wärmeübergang ins Gebäude immer über ein fluidbetriebenes System. Das heißt sie können mit einem el. Wärmeerzeuger thermische Energie in einem Speicher einspeisen und von dort über einen Radiator, Konvekor oder Lüfter ins Gebäude bringen. Das Abbilden v...

Hallo Zaideus,

das liegt daran das die normale grafische Auswertung immer nur Stundendurchschnittswerte abbildet und Extremwerte ebenfalls ausblendet. Wenn du auf "Zeige Details" klickst siehst du die Werte auf Simulationszeitschrittbasis.

Viele Grüße,

Lars

Dear Nefeli, Unfortunately I cannot crosscheck since I don’t have your hourly load profile. Anyway I think I know what the problem is (we discussed it already in the class room). Actually the warning energy demand is not met is not right. You need to check under component results (under building) if...

Hallo Dave, so wie ich eine Konfortlüftung verstehe bringst man die Energie mittels eines Lüfters in das Gebäude und sorgt gleichzeitig für die entsprechende Luftqualität. Diese beiden Dinge trennt man in Polysun. Über den Radiator oder den Lüfter wird einfach die Energie in das Gebäude gebracht (oh...

Dear AZ, the control strategy you can easily change by using either different sensor positions or different temperatures for the controller. E.g. you have a heat pump (first priority) and an electrical heater (second priority). Just switch on the heat pump as soon as the temperature in the storage t...

Hi tdanai,

as soon as 144 °C appear in your system there is a mistake in it. The easiest way to solve it is to have a look at it. Can you please send me the project to lars.kunath@velasolaris.com

BR Lars