[EnergyPlus_Support] Re: Modelling under-slab subfloor void

["Jean marais" <jeannieboef@xxxxxxxxx>]

Very interesting. I would love to hear about the results when you are through.

In your case I would start simple. Use a "fan assist methode" incorporating the plenum objects for the crawl spaces & wall cavities incombination with "ZoneMixing" objects to move the air around. 

If you get encourageing results you could think about a much more complicated AFN model, where you would probably need to go with the "withdistribution" type...but this step is probably going to be unessesary to prove the results except for a possible slight reduction in fan power due to stack effect assisted ventialtion.

Keep us posted.



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "energy.partners" <energy.partners@...> wrote:
>
> Hi,
> 
> I would like to model a house with under-slab subfloor void or crawlspace (one of the product examples is Cupolex: http://www.cupolex.co.nz/). 
> 
> From this house model I would like to analyse the benefit of drawing warm/cool air from the roof attic space to the under-slab void space. The under-slab space will be divided into 8 zones by the presence of structural beams bearing on the ground with small ducts through those beams (internal walls) to `connect' the zones together by airflow from one to another in series. Air will be pushed into zone 1 by a fan and the air will pass through zone 2 -> zone 3.....-> zone 8 and return to the roof, possibly with fan assistance. 
> 
> I am setting this design concept using the AirflowNetwork Model and I am finding it difficult. Is it the correct EnergyPlus model to simulate the above situation? If not, are there any other objects in EnergyPlus that can model this design concept? Has anyone done simular modelling before? 
> 
> Thanks.
>




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