Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration
Collection of records of configuration data of borefields
Information
This package contains data records for use with ground heat exchanger models in Buildings.Fluid.Geothermal.ZonedBorefields. The configuration data records contain the geometrical and operational characteristics of the borefield and the boreholes.
Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).
Package Content
| Name | Description |
|---|---|
 Template
|
Template for configuration data records |
| Validation
|
Configuration data record for validation models |
Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.Template
Template for configuration data records
Information
This record is a template for the records in Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.
See Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.Validation for how to use this record.
Extends from Modelica.Icons.Record (Icon for records).
Contents
| Type | Name | Default | Description |
|---|---|---|---|
| BoreholeConfiguration | borCon | Borehole configuration | |
| Boolean | use_Rb | false | true if the value borehole thermal resistance Rb should be given and used |
| Real | Rb | 0.0 | Borehole thermal resistance Rb. Only to fill in if known [(m.K)/W] |
| Nominal condition | |||
| MassFlowRate | mBor_flow_nominal[nZon] | Nominal mass flow rate per borehole in each zone [kg/s] | |
| Pressure | dp_nominal[nZon] | Pressure losses for each zone of the borefield [Pa] | |
| Borehole | |||
| Height | hBor | Total height of the borehole [m] | |
| Radius | rBor | Radius of the borehole [m] | |
| Height | dBor | Borehole buried depth [m] | |
| Integer | nZon | Total number of independent bore field zones | |
| Integer | iZon[nBor] | Index of the zone corresponding to each borehole | |
| Length | cooBor[:, 2] | Cartesian coordinates of the boreholes in meters [m] | |
| Tubes | |||
| Radius | rTub | Outer radius of the tubes [m] | |
| ThermalConductivity | kTub | Thermal conductivity of the tube [W/(m.K)] | |
| Length | eTub | Thickness of a tube [m] | |
| Length | xC | Shank spacing, defined as the distance between the center of a pipe and the center of the borehole [m] | |
Modelica definition
record Template
"Template for configuration data records"
extends Modelica.Icons.Record;
parameter Buildings.Fluid.Geothermal.Borefields.Types.BoreholeConfiguration borCon
"Borehole configuration";
//--------------------------- Resistance parameters --------------------------
parameter Boolean use_Rb = false
"true if the value borehole thermal resistance Rb should be given and used";
parameter Real Rb(unit="(m.K)/W") = 0.0
"Borehole thermal resistance Rb. Only to fill in if known";
//------------------------------ Flow parameters -----------------------------
parameter Modelica.Units.SI.MassFlowRate[nZon] mBor_flow_nominal
"Nominal mass flow rate per borehole in each zone";
final parameter Modelica.Units.SI.MassFlowRate[nZon] mZon_flow_nominal = {mBor_flow_nominal[i] * nBorPerZon[i] for i in 1:nZon}
"Nominal mass flow rate of each borefield zone";
parameter Modelica.Units.SI.Pressure[nZon] dp_nominal(each displayUnit="Pa")
"Pressure losses for each zone of the borefield";
// -- Advanced flow parameters
final parameter Modelica.Units.SI.MassFlowRate[nZon] mBor_flow_small(each min=0) =
{1E-4*abs(mBor_flow_nominal[i]) for i in 1:nZon}
"Small mass flow rate for regularization of zero flow";
//------------------------- Geometrical parameters ---------------------------
// -- Borehole
parameter Modelica.Units.SI.Height hBor "Total height of the borehole";
parameter Modelica.Units.SI.Radius rBor "Radius of the borehole";
parameter Modelica.Units.SI.Height dBor "Borehole buried depth";
// -- Borefield
parameter Integer nZon(min=1) "Total number of independent bore field zones";
parameter Integer[nBor] iZon "Index of the zone corresponding to each borehole";
final parameter Integer[nZon] nBorPerZon = {sum({if iZon[j]==i then 1 else 0 for j in 1:nBor}) for i in 1:nZon}
"Number of boreholes per borefield zone";
parameter Modelica.Units.SI.Length[:,2] cooBor
"Cartesian coordinates of the boreholes in meters";
final parameter Integer nBor = size(cooBor, 1) "Total number of boreholes";
// -- Tube
parameter Modelica.Units.SI.Radius rTub "Outer radius of the tubes";
parameter Modelica.Units.SI.ThermalConductivity kTub
"Thermal conductivity of the tube";
parameter Modelica.Units.SI.Length eTub "Thickness of a tube";
parameter Modelica.Units.SI.Length xC
"Shank spacing, defined as the distance between the center of a pipe and the center of the borehole";
end Template;
Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.Validation
Configuration data record for validation models
Information
This record presents an example for how to define configuration data records using the template in Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.Template.
The configuration consists in 228 boreholes divided into 2 zones of 80 and 148. The borefield is configured in a cylindrical arrangement with the 2 zones distributed in annular regions. The borefield configuration is shown in the figure below.
Extends from Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.Template (Template for configuration data records).
Contents
| Type | Name | Default | Description |
|---|---|---|---|
| BoreholeConfiguration | borCon | Borefields.Types.BoreholeCon... | Borehole configuration |
| Boolean | use_Rb | false | true if the value borehole thermal resistance Rb should be given and used |
| Real | Rb | 0.0 | Borehole thermal resistance Rb. Only to fill in if known [(m.K)/W] |
| Nominal condition | |||
| MassFlowRate | mBor_flow_nominal[nZon] | {0.5,0.3} | Nominal mass flow rate per borehole in each zone [kg/s] |
| Pressure | dp_nominal[nZon] | {5e4,2e4} | Pressure losses for each zone of the borefield [Pa] |
| Borehole | |||
| Height | hBor | 100.0 | Total height of the borehole [m] |
| Radius | rBor | 0.075 | Radius of the borehole [m] |
| Height | dBor | 1.0 | Borehole buried depth [m] |
| Integer | nZon | 2 | Total number of independent bore field zones |
| Integer | iZon[nBor] | {1,1,1,1,1,1,1,1,1,1,1,1,1,1... | Index of the zone corresponding to each borehole |
| Length | cooBor[:, 2] | {{4.50,0.00},{7.50,0.00},{10... | Cartesian coordinates of the boreholes in meters [m] |
| Tubes | |||
| Radius | rTub | 0.02 | Outer radius of the tubes [m] |
| ThermalConductivity | kTub | 0.5 | Thermal conductivity of the tube [W/(m.K)] |
| Length | eTub | 0.002 | Thickness of a tube [m] |
| Length | xC | 0.05 | Shank spacing, defined as the distance between the center of a pipe and the center of the borehole [m] |
Modelica definition
record Validation "Configuration data record for validation models"
extends Buildings.Fluid.Geothermal.ZonedBorefields.Data.Configuration.Template
(
borCon=Borefields.Types.BoreholeConfiguration.SingleUTube,
cooBor={{4.50,0.00},{7.50,0.00},{10.50,0.00},{13.50,0.00},{3.00,3.00},{6.00,3.00},{9.00,3.00},{12.00,3.00},{15.00,3.00},{4.50,6.00},{7.50,6.00},{10.50,6.00},{13.50,6.00},{3.00,9.00},{6.00,9.00},{9.00,9.00},{12.00,9.00},{4.50,12.00},{7.50,12.00},{10.50,12.00},{16.50,0.00},{19.50,0.00},{22.50,0.00},{25.50,0.00},{18.00,3.00},{21.00,3.00},{24.00,3.00},{16.50,6.00},{19.50,6.00},{22.50,6.00},{15.00,9.00},{18.00,9.00},{21.00,9.00},{24.00,9.00},{13.50,12.00},{16.50,12.00},{19.50,12.00},{22.50,12.00},{3.00,15.00},{6.00,15.00},{9.00,15.00},{12.00,15.00},{15.00,15.00},{18.00,15.00},{21.00,15.00},{4.50,18.00},{7.50,18.00},{10.50,18.00},{13.50,18.00},{16.50,18.00},{3.00,21.00},{6.00,21.00},{9.00,21.00},{12.00,21.00},{15.00,21.00},{4.50,24.00},{7.50,24.00},{0.00,4.50},{0.00,7.50},{0.00,10.50},{0.00,13.50},{-3.00,3.00},{-3.00,6.00},{-3.00,9.00},{-3.00,12.00},{-3.00,15.00},{-6.00,4.50},{-6.00,7.50},{-6.00,10.50},{-6.00,13.50},{-9.00,3.00},{-9.00,6.00},{-9.00,9.00},{-9.00,12.00},{-12.00,4.50},{-12.00,7.50},{-12.00,10.50},{0.00,16.50},{0.00,19.50},{0.00,22.50},{0.00,25.50},{-3.00,18.00},{-3.00,21.00},{-3.00,24.00},{-6.00,16.50},{-6.00,19.50},{-6.00,22.50},{-9.00,15.00},{-9.00,18.00},{-9.00,21.00},{-9.00,24.00},{-12.00,13.50},{-12.00,16.50},{-12.00,19.50},{-12.00,22.50},{-15.00,3.00},{-15.00,6.00},{-15.00,9.00},{-15.00,12.00},{-15.00,15.00},{-15.00,18.00},{-15.00,21.00},{-18.00,4.50},{-18.00,7.50},{-18.00,10.50},{-18.00,13.50},{-18.00,16.50},{-21.00,3.00},{-21.00,6.00},{-21.00,9.00},{-21.00,12.00},{-21.00,15.00},{-24.00,4.50},{-24.00,7.50},{-4.50,0.00},{-7.50,0.00},{-10.50,0.00},{-13.50,0.00},{-3.00,-3.00},{-6.00,-3.00},{-9.00,-3.00},{-12.00,-3.00},{-15.00,-3.00},{-4.50,-6.00},{-7.50,-6.00},{-10.50,-6.00},{-13.50,-6.00},{-3.00,-9.00},{-6.00,-9.00},{-9.00,-9.00},{-12.00,-9.00},{-4.50,-12.00},{-7.50,-12.00},{-10.50,-12.00},{-16.50,0.00},{-19.50,0.00},{-22.50,0.00},{-25.50,0.00},{-18.00,-3.00},{-21.00,-3.00},{-24.00,-3.00},{-16.50,-6.00},{-19.50,-6.00},{-22.50,-6.00},{-15.00,-9.00},{-18.00,-9.00},{-21.00,-9.00},{-24.00,-9.00},{-13.50,-12.00},{-16.50,-12.00},{-19.50,-12.00},{-22.50,-12.00},{-3.00,-15.00},{-6.00,-15.00},{-9.00,-15.00},{-12.00,-15.00},{-15.00,-15.00},{-18.00,-15.00},{-21.00,-15.00},{-4.50,-18.00},{-7.50,-18.00},{-10.50,-18.00},{-13.50,-18.00},{-16.50,-18.00},{-3.00,-21.00},{-6.00,-21.00},{-9.00,-21.00},{-12.00,-21.00},{-15.00,-21.00},{-4.50,-24.00},{-7.50,-24.00},{-0.00,-4.50},{-0.00,-7.50},{-0.00,-10.50},{-0.00,-13.50},{3.00,-3.00},{3.00,-6.00},{3.00,-9.00},{3.00,-12.00},{3.00,-15.00},{6.00,-4.50},{6.00,-7.50},{6.00,-10.50},{6.00,-13.50},{9.00,-3.00},{9.00,-6.00},{9.00,-9.00},{9.00,-12.00},{12.00,-4.50},{12.00,-7.50},{12.00,-10.50},{-0.00,-16.50},{-0.00,-19.50},{-0.00,-22.50},{-0.00,-25.50},{3.00,-18.00},{3.00,-21.00},{3.00,-24.00},{6.00,-16.50},{6.00,-19.50},{6.00,-22.50},{9.00,-15.00},{9.00,-18.00},{9.00,-21.00},{9.00,-24.00},{12.00,-13.50},{12.00,-16.50},{12.00,-19.50},{12.00,-22.50},{15.00,-3.00},{15.00,-6.00},{15.00,-9.00},{15.00,-12.00},{15.00,-15.00},{15.00,-18.00},{15.00,-21.00},{18.00,-4.50},{18.00,-7.50},{18.00,-10.50},{18.00,-13.50},{18.00,-16.50},{21.00,-3.00},{21.00,-6.00},{21.00,-9.00},{21.00,-12.00},{21.00,-15.00},{24.00,-4.50},{24.00,-7.50}},
mBor_flow_nominal={0.5,0.3},
dp_nominal={5e4,2e4},
hBor=100.0,
rBor=0.075,
dBor=1.0,
nZon=2,
iZon={1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2},
rTub=0.02,
kTub=0.5,
eTub=0.002,
xC=0.05);
end Validation;