Ground
Symbol |  |
|---|
Use
The component enables the user to calculate the soil temperature in a specific depth depending on the following soil parameters:
DayOfYear: 0 .. 365/366 - simulated time during the year in days (+1d in case of a leap year)
LeapYear: true/false - current year is a leap year
cGround: specific heat capacity of soil
lambdaGround: thermal conductivity of soil
rhoGround: density of soil
GeoGradiant: geothermal gradiant
alphaAirGround: heat transmission coefficient between soil and air
TAmbientAverage: average annual air temperature
TAmbientMax: maximum average monthly air temperature
MaxMonth: 1 .. 12 - January = 1 .. December = 12 - month of year with maximum average monthly air temperature
More details about the theoretical background of the model provides the Model Background.
Parameters and Connectors
The ground component actually has only one parameter, i.e., the average ground depth for which the ground temperature has to be calculated.
However, most of the model's required parameters defines the Environment model and transfers the data via the ▶EnvironmentConditions bus.
The model has only two interfaces:
▶EnvironmentConditions: bus connector to the Environment model
▶TGround: soil temperature output
Model Background
This model calculates the average soil temperature depending on a simple sine function which takes into account the currently simulated season as well as some location-specific soil temperatures:
This results in characteristic curves for different months regarding different depths of soil:
