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Hello. I want to ask if the 18C (default value in energy plus) for ground temperature is a reasonable value for all climate zones. I read some valuable information on this website regarding the Kiva method but my problem is that I need to know the ground temperature. If we don't define this value, energy plus will use the default value (18C) and I didn't find any sources with ground temperature measurements. I also noticed the caution in E+ that says we shouldn't use the values from the weather file. I also tried to use some preprocessor applications but it wasn't successful. I mean CalcSoilSurfTemp and GrndTempCalc. I didn't know the difference between these two and I'm unsure how to use them. I'm using E+ version 9.5 but I also tried the latest version (22.2). I have a basement and my building isn't a high-rise building so I think the ground heat transfer is important in my case. I also, realized that even when we define the deep and shallow ground temperature, E+ again uses 18C (default) from Site:GroundTemperature:BuildingSurface

Hello. I want to ask if the 18C (default value in energy plus) for ground temperature is a reasonable value for all climate zones. I read some valuable information on this website regarding the Kiva method but my problem is that I need to know the ground temperature. If we don't define this value, energy plus will use the default value (18C) and I didn't find any sources with ground temperature measurements. I also noticed the caution in E+ that says we shouldn't use the values from the weather file. I also tried to use some preprocessor applications but it wasn't successful. I mean CalcSoilSurfTemp and GrndTempCalc. I didn't know the difference between these two and I'm unsure how to use them. I'm using E+ version 9.5 but I also tried the latest version (22.2). I have a basement and my building isn't a high-rise building so I think the ground heat transfer is important in my case. I also, realized that even when we define the deep and shallow ground temperature, E+ again uses 18C (default) from Site:GroundTemperature:BuildingSurface