Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx

Information

This package contains the validation cases of the 900 series of the BESTEST validation (ANSI/ASHRAE Standard 140-2020).

References

ANSI/ASHRAE. 2020. ANSI/ASHRAE Standard 140-2020, Standard Method of Test for the Evaluation of Building Energy Analysis Computer Programs.

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

Package Content

Name	Description
Case900	Case 600, but with high thermal mass
Case900FF	Case 600FF, but with high thermal mass
Case910	Case 900, but the window has an overhang
Case920	Case 900, but with windows on East and West side walls
Case930	Case 920, but with added overhang and sidefins
Case940	Case 900, but with heating schedule
Case950
Case950FF
Case980	Case 900, but with increased exterior wall and roof insulation
Case980FF
Case985	Case 900, but with single heating and cooling setpoint
Case995	Case 900, but with single heating and cooling setpoint and increased exterior wall and roof insulation

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900

Case 600, but with high thermal mass

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900

Information

This model is used for the basic test case 900 of the BESTEST validation suite. Case 900 is a heavy-weight building with room temperature control set to 20°C for heating and 27°C for cooling. The room has no shade and a window that faces south.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases6xx.Case600 (Case 600FF, but with dual-setpoint for heating and cooling).

Modelica definition

model Case900 "Case 600, but with high thermal mass" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases6xx.Case600( zonHVAC(redeclare replaceable Buildings.ThermalZones.ISO13790.Validation.BESTEST.Data.Case900Mass buiMas)); end Case900;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900FF

Case 600FF, but with high thermal mass

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900FF

Information

This model is used for the test case 900FF of the BESTEST validation suite. Case 900FF is a heavy-weight building. The room temperature is free floating.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases6xx.Case600FF (Basic test with light-weight construction and free floating temperature).

Modelica definition

model Case900FF "Case 600FF, but with high thermal mass" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases6xx.Case600FF( zonHVAC(redeclare replaceable Buildings.ThermalZones.ISO13790.Validation.BESTEST.Data.Case900Mass buiMas)); end Case900FF;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case910

Case 900, but the window has an overhang

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case910

Information

This model is the case 910 of the BESTEST validation suite. Case 910 differs from case 900 in that the south-oriented window has an overhang of 1 meter.

Implementation

The shading reduction factor was set to 0.84. This value was calculated based on Table G.6 of the ISO13790 standard.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case910 "Case 900, but the window has an overhang" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(zonHVAC( shaRedFac=0.84)); end Case910;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case920

Case 900, but with windows on East and West side walls

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case920

Information

This model is the case 920 of the BESTEST validation suite. Case 920 differs from case 900 in that the west and east facing walls have a window, but there is no window in the south facing wall.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case920 "Case 900, but with windows on East and West side walls" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(zonHVAC( AWin={0,6,0,6})); end Case920;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case930

Case 920, but with added overhang and sidefins

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case930

Information

This model is the case 930 of the BESTEST validation suite. Case 930 differs from case 920 in that windows on the west and east walls have an overhang and side fins.

Implementation

The shading reduction factor was set to 0.846 for overhang and 0.915 for side fins. These values were calculated based on Table G.6 and Table G.7 of the ISO13790 standard.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case930 "Case 920, but with added overhang and sidefins" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(zonHVAC( AWin={0,6,0,6}, shaRedFac=0.846*0.915)); end Case930;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case940

Case 900, but with heating schedule

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case940

Information

This model is used for the basic test case 940 of the BESTEST validation suite. Case940 is the same as Case900, but with the following modifications:

From 23h00 hours to 07h00 hours, heat = on if zone temperature is below 10°C
From 07h00 hours to 08h00 hours, the thermostat setpoint shall vary linearly with time from 10 °C to 20 °C. If the zone temperature is less than the thermostat setpoint for a subhourly time step, heat shall be added to the zone such that the zone temperature at the end of each subhourly time step shall correspond to the thermostat setpoint that occurs at the end of each subhourly time step.
From 08h00 hours to 23h00 hours, heat = on if zone temperature is below 20°C
All hours, cool = on if zone temperature above 27°C
Otherwise, mechanical equipment is off.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case940 "Case 900, but with heating schedule" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(TSetHea( table=[0,273.15 + 10; 7*3600,273.15 + 10; 8*3600,273.15 + 20; 23*3600, 273.15 + 20; 23*3600,273.15 + 10; 24*3600,273.15 + 10], extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)); end Case940;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case950

Information

This model is used for the test case 950 of the BESTEST validation suite. Case950 is the same as Case900, but with the following modifications:

From 18h00 hours to 07h00 hours, vent fan = on
From 07h00 hours to 18h00 hours, vent fan = off
Heating is always off
From 07h00 hours to 18h00 hours, cooling is on if zone temperature > 27°C, otherwise cool = off.
From 18h00 hours to 07h00 hours, cooling is always off.
Ventilation fan capacity is 1700 standard m³/h (in addition to specified infiltration rate). After adjustment for the altitude, the capacity is 1409 m³/h.
No waste heat from fan.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case950 extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(zonHVAC( nPorts=3), gaiHea(k=0), TSetHea(table=[0, 273.15 -200]), TSetCoo(table=[0, 273.15+100; 7*3600, 273.15+100; 7*3600, 273.15+27; 18*3600, 273.15+27; 18*3600, 273.15+100; 24*3600, 273.15+100], extrapolation=Modelica.Blocks.Types.Extrapolation.Periodic)); Buildings.Fluid.Sources.MassFlowSource_T sinInf( redeclare package Medium = Buildings.Media.Air, use_m_flow_in=true, nPorts=1) "Sink model for air infiltration"; Modelica.Blocks.Math.Product product1 "Product to compute infiltration mass flow rate"; Modelica.Blocks.Sources.CombiTimeTable vent(table=[0,-1409/3600; 7*3600,-1409/3600; 7*3600,0; 18*3600,0; 18*3600,-1409/3600; 24*3600,-1409/3600], extrapolation= Modelica.Blocks.Types.Extrapolation.Periodic) "Ventilation air flow rate"; Buildings.Fluid.Sensors.Density senDen(redeclare package Medium = Buildings.Media.Air, warnAboutOnePortConnection=false); Buildings.Fluid.Sources.Outside out(redeclare package Medium = Buildings.Media.Air, nPorts=1); equation connect(product1.y,sinInf. m_flow_in); connect(vent.y[1],product1. u2); connect(senDen.d,product1. u1); connect(out.weaBus, zonHVAC.weaBus); connect(senDen.port, zonHVAC.ports[1]); connect(sinInf.ports[1], zonHVAC.ports[2]); connect(out.ports[1], zonHVAC.ports[3]); end Case950;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case950FF

Information

This model is used for the test case 950FF of the BESTEST validation suite. Case 950FF is identical to case 950, except that there is no heating and no cooling.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900FF (Case 600FF, but with high thermal mass).

Modelica definition

model Case950FF extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900FF( zonHVAC(nPorts=3)); Buildings.Fluid.Sources.MassFlowSource_T sinInf( redeclare package Medium = Buildings.Media.Air, use_m_flow_in=true, nPorts=1) "Sink model for air infiltration"; Buildings.Fluid.Sources.Outside out(redeclare package Medium = Buildings.Media.Air, nPorts=1); Modelica.Blocks.Math.Product product1 "Product to compute infiltration mass flow rate"; Modelica.Blocks.Sources.CombiTimeTable vent(table=[0,-1409/3600; 7*3600,-1409/3600; 7*3600,0; 18*3600,0; 18*3600,-1409/3600; 24*3600,-1409/3600], extrapolation= Modelica.Blocks.Types.Extrapolation.Periodic) "Ventilation air flow rate"; Buildings.Fluid.Sensors.Density senDen(redeclare package Medium = Buildings.Media.Air, warnAboutOnePortConnection=false); equation connect(product1.y,sinInf. m_flow_in); connect(vent.y[1],product1. u2); connect(senDen.d,product1. u1); connect(sinInf.ports[1], zonHVAC.ports[1]); connect(senDen.port, zonHVAC.ports[2]); connect(out.ports[1], zonHVAC.ports[3]); connect(out.weaBus, zonHVAC.weaBus); end Case950FF;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case980

Case 900, but with increased exterior wall and roof insulation

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case980

Information

This model is the case 980 of the BESTEST validation suite. Case 980 differs from case 900 in that it has increased exterior wall and roof insulation.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case980 "Case 900, but with increased exterior wall and roof insulation" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(zonHVAC( UWal=0.15, URoo=0.1)); end Case980;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case980FF

Information

This model is used for the test case 980FF of the BESTEST validation suite. Case 980FF is a light-weight building with increased exterior wall and roof insulation. The room temperature is free floating.

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900FF (Case 600FF, but with high thermal mass).

Modelica definition

model Case980FF extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900FF(zonHVAC( UWal=0.15, URoo=0.1)); end Case980FF;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case985

Case 900, but with single heating and cooling setpoint

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case985

Information

This model is the case 985 of the BESTEST validation suite. Case 985 differs from case 900 in that it has single heating and cooling setpoint.

Heat = on if zone temperature is below 20°C
Cool = on if zone temperature is above 20°C

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case985 "Case 900, but with single heating and cooling setpoint" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900(TSetHea( table=[0.0,273.15 + 19.9]), TSetCoo(table=[0.0,273.15 + 20.1])); end Case985;

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case995

Case 900, but with single heating and cooling setpoint and increased exterior wall and roof insulation

Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case995

Information

This model is the case 995 of the BESTEST validation suite. Case 995 differs from case 900 in that it has increased exterior wall and roof insulation and it has single heating and cooling setpoint.

Heat = on if zone temperature is below 20°C
Cool = on if zone temperature is above 20°C

Extends from Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900 (Case 600, but with high thermal mass).

Modelica definition

model Case995 "Case 900, but with single heating and cooling setpoint and increased exterior wall and roof insulation" extends Buildings.ThermalZones.ISO13790.Validation.BESTEST.Cases9xx.Case900( zonHVAC(UWal=0.15, URoo=0.1), TSetHea(table=[0.0,273.15 + 19.9]), TSetCoo(table=[0.0,273.15 + 20.1])); end Case995;