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Re: [TRNSYS-users] energy bilans for Type 56


Hi Karol,

I have never used energy balances for zones so I don't know what Qvent, Qtrans or Qsolgain represent, but have you looked in the multizone building manual, section 5.4.1.11, page 156 : "Equal amounts of air are assumed to leave the airnode at the airnode temperature".

I don't know if it helps or not, but I think it might change your vision of how the energy balance is defined.

Regards,

Damien.


On Thu, Nov 17, 2011 at 1:28 PM, Karol Bandurski <karol.bandurski@put.poznan.pl> wrote:

Hi,

 

I has modeled two version of one family house:

a. with mechanical ventilation

b. with natural ventilation + exhaust fans in dirty rooms (bathroom, WC, Kitchen)

 

Then I has define balance output Ntype 904 (Energy Balance for Zones) for one zone of this house.

The balance is seems to me false because in TRNBuild in Ventilation Manager I can define only supply air ventilation. So, QVENT represents only heat from supply air, heat connect with exhaust air is probably contained in QTRANS. QTRANS has influence on temperature of walls, so maybe QSOLGAIN is also not so accurate?

 

My question:

It is true?

How can I change it?

Does TRNFlow change this imperfection? (I don’t have this soft, I has only Contam)

 

Regards,

 

Karol

------------------------------------------------

Karol Bandurski MSc.

Institute of Environmental Engineering

Poznan University of Technology

www.ee.put.poznan.pl

www.put.poznan.pl

 


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