[esp-r] Re: air flow network

[Achim Geissler]

Hi Arianna,

could you give an example with numbers and units for your substitution procedure? What was the ACH at 50 Pa result from the measurement? Do you have consumption data from the obviously existing building? What are the dimensions of the single storey house? At 100 m2 heated area you would end up with 300 kWh/(m2 a) which is a lot but not totally impossible depending on climate, window sizes, insulation standard and leakiness.

Sorry to ask so many questions.

Best
Achim


On Nov 28, 2013, at 8:37 PM, Arianna Sdei <A.Sdei at brighton.ac.uk> wrote:

> Dear ESP-r community,
>  
> I am trying to set up an air flow network using the measured air flow rate from pressure tests. To do that I am substituting power law flow components to cracks. I have calculated the coefficient a in the equation : Q = a dP ^b using the measured ACH and I am using b=0.66 but when simulating I get a too high heating load (over 30000 kWh/year for a single storey house) . Does anybody know why this happens and if there is another way to use the measured ACH from the pressure tests to set up the infiltration rate using an air flow network? Thank you
>  
> Regards,
>  
> Arianna   
>  
> Arianna Sdei
>  
> Research Fellow IFORE (Innovation For Renewal)
>  
> UNIVERSITY OF BRIGHTON
>  
> Moulsecoomb, Lewes Road, Brighton, BN2 4AT
>  
> direct line: 0044 (0)2036747268
>  
> mobile: 0044 (0)7981739024
>  
>  
> 
> ___________________________________________________________
> This email has been scanned by MessageLabs' Email Security
> System on behalf of the University of Brighton.
> For more information see http://www.brighton.ac.uk/is/spam/
> ___________________________________________________________
> _______________________________________________
> esp-r mailing list
> esp-r at lists.strath.ac.uk
> http://lists.strath.ac.uk/mailman/listinfo/esp-r

achim.geissler at intergga.ch




-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.strath.ac.uk/archives/esp-r/attachments/20131128/2e4bdf53/attachment.html