[EnergyPlus_Support] Simple Transient Model

["elizabeth.ricker" <elizabeth.ricker@xxxxxxxxx>]

Hi All,
   I am currently looking at a simple transient model in 
EnergyPlus.  I would like to heat a room (1 zone) to 26C for a 
period, then allow it to cool to the outdoor temperature (0C) and 
analyze the time response of the system.  I am looking at the 
reponse given that heat is only leaving through one wall, there is 
no thermal mass in that wall, and the remainder of the walls are 
super insulating.  The convection coefficients on each wall are set 
to 1 W/m2K and the conductivity of the  single conducting wall is 
very high (k = 1000, L = .1).  Given these conditions the only 
thermal mass in my model should be that of the air in the room. 
Also, I am running a modified weather file with T = 26C for the 
first month, and then going to 0C for the remainder of the year. The 
results that I am showing are presenting a much longer time reponse 
than I would expect, and do not necessarily show an exponential time 
decay.  Any suggestions on what might be going wrong in my model?  

Thank you,

Betsy Ricker




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