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Monodraught windcatcher IES

asked 2018-04-05 09:57:32 -0500

updated 2018-04-05 10:45:39 -0500

I'm having difficulty simulating a naturally ventilated space using the Monodraught windcatcher components. The model will run if I don't add any heat gains to the space, however if I add any heat gains the analysis fails due to:

"Instability in room. Possible remedies: reduce time step; set radiant fraction to 0; check gain and ventilation levels; reduce MacroFlo opening areas."

Does anyone have any ideas?

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answered 2018-04-06 08:31:59 -0500

Monodraught helped me get to the bottom of this. Should anyone have a similar problem in the future see below:

The thermal template assigned to the windcatchers and associated ducts should be "Monodraught WINDCATCHER/Duct" for some reason this was not being pulled in when adding the windcatcher components. Having manually loaded the template and applied it to the relevant spaces the model runs fine.

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Asked: 2018-04-05 09:57:32 -0500

Seen: 306 times

Last updated: Apr 06 '18