Re: [EnergyPlus_Support] thermal mass versus insulation

[Drury.Crawley@xxxxxxxxxx]

Mass helps if you allow the indoor temperature to swing.  If you
hold it close to the same setpoint, it can increase energy.
I notice in my own house that the brick walls continue to bring
heat into the house during the summer long after the outside
temperature has dropped.



                                                                                                             
                      "Emanuele Naboni"                                                                      
                      <emanuele.naboni@gmail.      To: EnergyPlus_Support@xxxxxxxxxxxxxxx                    
                      com>                         cc:                                                       
                      Sent by:                     Subject:  [EnergyPlus_Support] thermal mass versus        
                      EnergyPlus_Support@yaho         insulation                                             
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                      09/15/2006 06:48 PM                                                                    
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Gents,

I am running a simulation to understand for a residential building located
in Milan if is better to have an envelope with thermal mass or a light wall
(similar to passive house wall). Both wall have the same K=0.4w/hm2 °C.

The light wall gives better Energy consuptions performance in winter
season, the thermal mass during the summer.
Is this a reasenable result?

Might it be that the thermal mass during the winter absorbe part of the
heat
from the HVAC?
Thanks in advance to anyone has experience on the field!

Emanuele Naboni

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