.BuildingSystems.Technologies.DistrictHeatingNetworks.BoundaryConditions.GroundTemperature0D

Information

The model bases on the Kusuda equations, which describes the temperature on the ground as a function of the depth z and time.

To determine the temperature it is necessary to have information about the weather: mean annual temperature (Tmean) and annual temperature amplitude (A) as well as information about the ground thermal diffusivity alpha. Furthermore the equation is tunned with a time shift parameter t0 which correponds to the day at which the ambient temperature has its maximum value.

References

Soil thermal conductivity prediction for distrit heating pre-insulated pipeline in operation; Matjaz P., Zlatko R., Suvad B. and Iztok Z.; published in Energy 2012

Earth temperature and thermal diffusivity at selected stations in the United States; Kusuda, T. and Achenbach P. R., 1965