Re: [EnergyPlus_Support] Re: A Problem regarding to Energy Plus Run Time

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

The solution space of the Airflow network model was taking
an inordinate amount of time.

We have fine tuned that for V7 and if I get a minute, I will try to run
your current file with the new code.

At 08:17 AM 9/29/2011, Ke Xu wrote:
> Hi,Pedro,Andy,
> Just a followup on this topic,I tried both senarios: water radiator and
> convector.Compared with the simulation time of the case with natural
> ventilation function switched on, which could be weeks, these two
> simulation can be finished within several hours. So clearly, simulating
> natural ventilation of a building takes huge amount of time, and this is
> a very good lesson I learnt. Do you have an idea why natural ventilation
> adds so much time to the simulation? Is it because it takes more
> iterations for each time step? or because of the model
> itself?

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