Dear all,
I'm using eQUEST to simulate a small container house without windows.
I want to get the hourly trial zone temperature, and the simulation
time is only for 1 or 2 days.
I want to assum that in the beginning, the inside temperature is equal
to the outside temperature.
Therefore, I'd like to know if the initial inside trial zone
temperature is the same as the outside temperature (in the weather bin
file).
If not, how could I set the initial inside zone trial temperature?
I've done some simulation test, but the inside zone trial temperature
result for the first hour is always much lower than the outside
temperature.
By the way, I'm curious about the meaning of hourly temperature in
eQUEST. Are they the average temperature in each hour?
Thank you.
Lily
If there is not a delta T, then you have no building- meaning the
temperatures can not be the same inside and outside.
Energy modeling uses all factors including but not limited to weather,
conductivity/resistivity of envelope, internal gains & losses to calculate
the hourly (or sub-hourly) temperatures. Why you would want the temperature
to be the same I do not understand but again unless you do not have any
loads/gains or envelope than the temperatures will not be the same.
Possibly if you need this for research you could compile a TRNSYS type for
such research, but even then it would be tough to remove all of the
conditions that cause the buildings temperatures to differ from outside.
*Jeremiah D. Crossett*
You could run the building with high infiltration rates and no
cooling/heating coming on to get the inside temps same as outside. Once the
temps are what you are looking for, you can schedule the infiltration back
to normal levels.
-Rohini
So with excessive infiltration rates the do you think the thermal mass
factors of the constructions would change the internal temps?
*Jeremiah D. Crossett*