Hi everyone
The Energy plus documentation specifies that for typical commercial
buildings in the USA, a reasonable default value for ground temperature:
building surface is 2 degC less than the average indoor space temperature.
What could be a probable default ground temperature for Indian climates, say
New Delhi or Jaipur?
Thanks
Sandeep
Hi,
You may use the last month mean temperature, less 1 degree. It's a
simplify method but I've seen many simulations this way.
att.
Francisco Massucci
Hi
Can you suggest some reference to support your point.
Thanks
Sandeep Kachhawa
Don't the TMY2 & EPW weather data files have ground temperature in them?
http://apps1.eere.energy.gov/buildings/energyplus/cfm/weather_data3.cfm/re
gion=2_asia_wmo_region_2/country=IND/cname=India
You can convert the epw files to CSV so that you can take a look at them
with the energy plus weather utility, if I remember correctly.
Morgan Heater, PE
Yes, the weather file does have ground temperatures but its given for
different no. of ground temperature depths and is not clear. Further the
weatehr file ground temperatures are undisturbed ground temperatures, and as
per the EnergyPlus documentation, its not appropriate to take these values
for simulation
Dear Sandeep,
I used slab utility programe of energy plus to get the temperature of
outside face temperatures for the core area and the perimeter area of the
slab.Go through the "Ground Heat Transfer in EnergyPlus" in
the auxiliary programs document of energy plus.
Regards,
Kanagaraj
Dear Kanagaraj
I tried to use the slab utility program but couldn't get the desired
results. Can you please help me on that, how to use that program?
Thanks
Sandeep Kachhawa
You can get EnergyPlus help at the helpdesk: http://energyplus.helpserve.com
the slab utility use is described in the Auxiliary Programs document
and you can also embed objects into your IDF and have the slab
program run automatically.