Hi, it's not correct. You must to know the ground temperature. In the weather file .stat you can sometimes find it.
Good luck
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.