Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.Validation

Validation models for the geothermal heat transfer models

Information

This package contains validation models for the classes in Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.

Note that most validation models contain simple input data which may not be realistic, but for which the correct output can be obtained through an analytic solution. The examples plot various outputs, which have been verified against these solutions. These model outputs are stored as reference data and used for continuous validation whenever models in the library change.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name	Description
ShaKappa	Verifies the SHA-1 encryption of a zoned borefield
ShiftAggregationCells	This validation case test the cell shifting procedure
TemperatureResponseMatrix	This validation case tests the calculation of thermal resposne factors
TemporalSuperposition	This validation case applies temporal superposition with truncated vectors

Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.Validation.ShaKappa

Verifies the SHA-1 encryption of a zoned borefield

Information

This example uses a zoned borefield parameterization to test the SHA1-encryption of the arguments required to determine the thermal response factor.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

Type	Name	Default	Description
String	strIn	Buildings.Fluid.Geothermal.Z...	SHA1-encrypted thermal response factor
String	strEx	"1d813242b2177c5e31011dc1656...	Expected string output

Modelica definition

model ShaKappa "Verifies the SHA-1 encryption of a zoned borefield" extends Modelica.Icons.Example; //Input parameter String strIn= Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.shaKappa( nBor=3, cooBor={{0,0}, {0,5}, {5,0}}, hBor=150, dBor=4, rBor=0.075, aSoi=1e-6, kSoi=2, nSeg=4, nZon=2, iZon={1, 2, 1}, nBorPerZon={2, 1}, nu={300, 3600, 86400, 604800, 2592000, 31536000, 315360000}, nTim=7, relTol=0.02) "SHA1-encrypted thermal response factor"; //Expected output (SHA1-encryption of (1,{{0,0}},150,4,0.075,1e-6,12,1,26,50,exp(5))) parameter String strEx= "1d813242b2177c5e31011dc1656add40a2a9d178" "Expected string output"; //Comparison result Boolean cmp "Comparison result"; equation cmp = Modelica.Utilities.Strings.isEqual(strIn,strEx,false); end ShaKappa;

Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.Validation.ShiftAggregationCells

This validation case test the cell shifting procedure

Information

This validation case replicates the load-shifting procedure illustred in the figure below by Cimmino (2014).

References

Cimmino, M. 2014. Développement et validation expérimentale de facteurs de réponse thermique pour champs de puits géothermiques, Ph.D. Thesis, École Polytechnique de Montréal.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Modelica definition

model ShiftAggregationCells "This validation case test the cell shifting procedure" extends Modelica.Icons.Example; discrete Integer curCel "Current occupied cell"; discrete Modelica.Units.SI.HeatFlowRate[2,5] QAggShi_flow "Shifted vector of aggregated loads"; initial equation curCel=3; QAggShi_flow={{1,3,2,0,0}, {1,3,2,0,0}}; equation when (sample(4, 1)) then (curCel,QAggShi_flow) = Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.shiftAggregationCells( i=5, nSeg=2, QAgg_flow=pre(QAggShi_flow), rCel={1,1,1,2,2}, nu={1,2,3,5,7}, curTim=time); end when; end ShiftAggregationCells;

Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.Validation.TemperatureResponseMatrix

This validation case tests the calculation of thermal resposne factors

Information

This validation case calculates the thermal response matrix for a field of 3 boreholes divided into 2 zones.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

Type	Name	Default	Description
Time	kappa[8, 8, 7]	Buildings.Fluid.Geothermal.Z...	Resulting temperature response matrix [s]

Modelica definition

model TemperatureResponseMatrix "This validation case tests the calculation of thermal resposne factors" extends Modelica.Icons.Example; parameter Modelica.Units.SI.Time kappa[8,8,7]= Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.temperatureResponseMatrix( nBor=3, cooBor={{0,0}, {0,5}, {5,0}}, hBor=150, dBor=4, rBor=0.075, aSoi=1e-6, kSoi=2, nSeg=4, nZon=2, iZon={1, 2, 1}, nBorPerZon={2, 1}, nu={300, 3600, 86400, 604800, 2592000, 31536000, 315360000}, nTim=7, sha="TemperatureResponseMatrix_zonedBorefield_validation") "Resulting temperature response matrix"; end TemperatureResponseMatrix;

Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.Validation.TemporalSuperposition

This validation case applies temporal superposition with truncated vectors

Information

This validation case uses a fictional load profile and weighting factors to ensure that the temporal superposition is correctly done. The curCel input to the function call truncates the vectors involved in the scalar product such that the large load in the QAgg_flow vector does not affect the final result.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

Type	Name	Default	Description
TemperatureDifference	supPos[2]	Buildings.Fluid.Geothermal.Z...	Temporal superposition [K]

Modelica definition

model TemporalSuperposition "This validation case applies temporal superposition with truncated vectors" extends Modelica.Icons.Example; parameter Modelica.Units.SI.TemperatureDifference[2] supPos= Buildings.Fluid.Geothermal.ZonedBorefields.BaseClasses.HeatTransfer.temporalSuperposition( i=5, nSeg=2, QAgg_flow={ {2,0,3,1e6,1e6}, {0,1,0,1e6,1e6}}, kappa={ { {0.4,0,0.2,1,10}, {0.1,0.15,0,0,20}}, { {0.1,0.15,0,0,20}, {0.2,1,0.3,0,10}}}, curCel=3) "Temporal superposition"; Modelica.Units.SI.TemperatureDifference[2] supPosErr; equation supPosErr = abs({2*0.4+3*0.2+0.15, 2*0.1+1}-supPos); end TemporalSuperposition;