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RE: [EnergyPlus_Support] Re: Zone Temperature Peaks too Early

An easy thing to try is to increase the sensible thermal capacitance of the zone’s air using the ZoneCapacitanceMultiplier:ResearchSpecial object.


From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of jeffreylauck
Sent: Tuesday, May 07, 2013 4:02 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: Zone Temperature Peaks too Early




Thanks for your response. I suppose it's possible that internal surfaces are slowing convection heat transfer in the actual house, but there's not a lot of furniture in the space. A small couch, a chair, and a table are about it.

The only way I can think of to test this theory is to increase the roughness of the internal surfaces in the zone. Do you have any other suggestions?



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Jean marais" <jeannieboef@...> wrote:
> Could it be that the actual convection from surfaces is different or more or less than those modelled thereby transfering heat from surfaces to air faster or slower. Are there more internal surfaces like furniture which could contribute the these effects?
> Jean
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "jeffreylauck" <JeffLauck@> wrote:
> >
> > Hello All,
> >
> > First off, thanks for a great community. I've learned a lot from searching through the message archives over the past few months.
> >
> > I have a model of a Passive House that I am trying to validate using measured data from the actual house. I've created an hourly schedule file for the lights, electric equipment, window usage, blind usage, and hot water consumption based on sub-hourly data collected at the site. I'm using a custom weather file from the roof-top weather station that monitors dry bulb temp, relative humidity, wind speed and direction, and global horizontal solar radiation. The diffuse radiation component was estimated using the Erbs model prior to importing the data into the weather utility. Currently I'm o


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