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[EnergyPlus_Support] Thermal Chimney modelling method
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- Subject: [EnergyPlus_Support] Thermal Chimney modelling method
- From: "aymericnovel" <aymericnovel@xxxxxxxxx>
- Date: Tue, 16 Mar 2010 10:26:57 -0000
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- Delivery-date: Tue, 16 Mar 2010 04:27:59 -0600
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Dear all,
I am struggeling to know whether or not I did simulate properly a solar chimney. It is in Jerusalem climate.
I first modelled a zone adjacent to the office I want to cool down. I positionned a low opening on the partition wall separating the two zones. This wall is of course composed by a structural part, here concrete, 2.5cm polyurethan board insulation and a black selective metal plate. The outer wall of the chimney is a glazed wall with an upper opening.
Although it seems to work logically, it doesn't match experimental results. Basically it seems it doesn't enhance enough the natural ventilation...
Using this method, I certainly don't take into account the temperature gradient within the thermal chimney, right? Is it more reliable to use the object Zone:ThermalChimney?
Plus, an additional problem I can't explain is that I get some massflow through ceilings although I do not activate infiltration calculations...
If anyone has experience modelling thermal chimney, I would be happy to know more about that!
Thanks a million
Aymeric
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