functionmultipoleFluidTemperature
Fluid temperatures from multipole solution
Extends from Modelica.Icons.Function (Icon for functions).
Information
This model evaluates the fluid temperatures using the multipole method of Claesson and Hellstrom (2011).
References
J. Claesson and G. Hellstrom. Multipole method to calculate borehole thermal resistances in a borehole heat exchanger. HVAC&R Research, 17(6): 895-911, 2011.
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nPip | Number of pipes | |
| Integer | J | Number of multipoles | |
| Modelica.Units.SI.Position[nPip] | xPip | x-Coordinates of pipes | |
| Modelica.Units.SI.Position[nPip] | yPip | y-Coordinates of pipes | |
| Real[nPip] | QPip_flow | Heat flow in pipes | |
| Modelica.Units.SI.Temperature | TBor | Average borehole wall temperature | |
| Modelica.Units.SI.Radius | rBor | Borehole radius | |
| Modelica.Units.SI.Radius[nPip] | rPip | Outter radius of pipes | |
| Modelica.Units.SI.ThermalConductivity | kFil | Thermal conductivity of grouting material | |
| Modelica.Units.SI.ThermalConductivity | kSoi | Thermal conductivity of soil material | |
| Real[nPip] | RFluPip | Fluid to pipe wall thermal resistances | |
| Real | eps | 1.0e-5 | Iteration relative accuracy |
| Integer | it_max | 100 | Maximum number of iterations |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Temperature[nPip] | TFlu | Fluid temperature in pipes |
Revisions
-
February 12, 2018, by Massimo Cimmino:
First implementation.