It is important to understand how eplus uses ground temps. look it up in the io ref (page 54 / pdf 101). For example, for conditioned spaces adjacent to ground, you should not use the undisturbed ground temperatures as the boundry condition under the slab.
On Tue, Nov 12, 2013 at 7:26 AM, yasin khan <yasinkhan683@...> wrote:
hello everyonei am facing a problem in defining in ground temperature because when i export idf file from design builder in takes 18 degree C for all the 12 months as default value for my climate condition. however i change this value by monthly dry bulb temperature i don't know that this methodology is correct or not. So plz can anybody can tell me that i am doing the right thing or not and tell me the better way for ground temperature.
--Edwin Lee, PhDEngineer, Commercial Buildings Research StaffNational Renewable Energy Laboratory