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Example openstudio: Low Temp Radiant Const Flow

On this forum I have already read several articles on this topic. But I can't help it. My program failed every time I implement the Low Temp Radiant Const Flow. Can someone show a model in open studio using Low Temp Radiant Const Flow?

Example openstudio: Low Temp Radiant Const Flow

Example openstudio: Low Openstudio failed when usingLow Temp Radiant Const Flow

On this forum I have already read several articles on this topic. But I can't help it. My program failed every time I implement the Low Temp Radiant Const ~~Flow.~~ Flow.

Can someone ~~show a~~ tell me why my program failed and how to do it properly?

here are some photos in openstudio: C:\fakepath\foto 1.png C:\fakepath\foto 2.png C:\fakepath\foto 3.png C:\fakepath\foto 4.png C:\fakepath\foto 5.png C:\fakepath\foto 6.png

I use the low temperature to model ~~in open studio~~ floor heating. some information about the floor heating:

constant temperature of 21 ° C my Internal source layer consists of: reinforced concrete / foam / polyurethane / floating screed (you can see this on the photo)

This is the error that I get when using Low Temp Radiant Const ~~Flow?~~Flow

Warning * Check input. Calc Pump Efficiency=2.15222E-002% which is less than 50%, for pump in radiant system LOW TEMP RADIANT CONST FLOW * Beginning Plant Sizing Calculations * Warning * GetOAControllerInputs: Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1 * ~~~ * Cannot locate a matching DesignSpecification:OutdoorAir object for Zone="THERMAL ZONE 1". * ~~~ * Using default OA of 0.00944 m3/s-person and 0.0 m3/s-m2. * Severe * Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1", Design Specification Outdoor Air Object Name blank * ~~~ * For Zone="THERMAL ZONE 1". * ~~~ * This field either needs to be filled in in this object or Sizing:Zone object. * ~~~ * For this run, default values for these fields will be used. * Warning * Controller:MechanicalVentilation = "CONTROLLER MECHANICAL VENTILATION 1", Zone="THERMAL ZONE 1". * ~~~ * No "PEOPLE" object has been specified in the idf for this zone, but the ventilation rate is > 0 in this Controller:MechanicalVentilation Object. * ~~~ * Check ventilation rate in Controller:MechanicalVentilation object. Simulation will continue. * Warning * Output:Meter: invalid Key Name="DISTRICTCOOLING:FACILITY" - not found. * Warning * Output:Meter: invalid Key Name="DISTRICTHEATING:FACILITY" - not found. * Warning * Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr Testing Individual Branch Integrity All Branches passed integrity testing Testing Individual Supply Air Path Integrity All Supply Air Paths passed integrity testing Testing Individual Return Air Path Integrity All Return Air Paths passed integrity testing No node connection errors were found. Beginning Simulation * Warning * GetSpecificHeatGlycol: Temperature is out of range (too high) for fluid [WATER] specific heat * * ~~~ * ..Called From:CalcSimpleHeatingCoil,Temperature=[137.06], supplied data range=[0.00,125.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Warning * GetDensityGlycol: Temperature is out of range (too high) for fluid [WATER] density * * ~~~ * ..Called From:PlantPumps:CalcPumps: ,Temperature=[137.12], supplied data range=[0.00,100.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Severe * Plant temperatures are getting far too hot, check controls and relative loads and capacities * ~~~ * Environment=RUN PERIOD 1, at Simulation time=05/20 20:40 - 20:50 * ~~~ * PlantLoop Name (SupplySide)= HOT WATER LOOP * ~~~ * PlantLoop Setpoint Temperature=67.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) does not have a Setpoint. * ~~~ * PlantLoop Inlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) has a Setpoint. * ~~~ * PlantLoop Outlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) "NODE 13" has temperature=300.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) "NODE 12" has temperature=300.0 {C} * ~~~ * PlantLoop Minimum Temperature=0.0 {C} * ~~~ * PlantLoop Maximum Temperature=100.0 {C} * ~~~ * PlantLoop Flow Request (SupplySide)=0.0 {kg/s} * ~~~ * PlantLoop Flow Request (DemandSide)=1.1 {kg/s} * ~~~ * PlantLoop Node (SupplySide) "NODE 13" has mass flow rate =1.1 {kg/s} * ~~~ * PlantLoop PumpHeat (SupplySide)=252.0 {W} * ~~~ * PlantLoop PumpHeat (DemandSide)=0.0 {W} * ~~~ * PlantLoop Cooling Demand=1049914.2 {W} * ~~~ * PlantLoop Heating Demand=0.0 {W} * ~~~ * PlantLoop Demand not Dispatched=0.0 {W} * ~~~ * PlantLoop Unmet Demand=-1049914.2 {W} * ~~~ * PlantLoop Capacity=49598.3 {W} * ~~~ * PlantLoop Capacity (SupplySide)=49598.3 {W} * ~~~ * PlantLoop Capacity (DemandSide)=0.0 {W} * ~~~ * PlantLoop Operation Scheme=HOT WATER LOOP OPERATION SCHEMES * ~~~ * PlantLoop Operation Dispatched Load = 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (SupplySide)= 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (DemandSide)= 0.0 {W} * ~~~ * Branches on the Loop. * ~~~ * Demand Branches: * ~~~ * HOT WATER LOOP DEMAND INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 3 * ~~~ * HOT WATER LOOP DEMAND BRANCH 1 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 2 * ~~~ * HOT WATER LOOP DEMAND BRANCH 2 * ~~~ * Components on Branch: * ~~~ * COIL:HEATING:WATER:COIL HEATING WATER 1 * ~~~ * HOT WATER LOOP DEMAND BRANCH 3 * ~~~ * Components on Branch: * ~~~ * ZONEHVAC:LOWTEMPERATURERADIANT:CONSTANTFLOW:LOW TEMP RADIANT CONST FLOW * ~~~ * HOT WATER LOOP DEMAND BYPASS BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:HOT WATER LOOP DEMAND BYPASS PIPE * ~~~ * HOT WATER LOOP DEMAND OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 4 * ~~~ * Supply Branches: * ~~~ * HOT WATER LOOP SUPPLY INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PUMP:VARIABLESPEED:PUMP VARIABLE SPEED 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 1 * ~~~ * Components on Branch: * ~~~ * BOILER:HOTWATER:BOILER HOT WATER 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 2 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 1 * ~~~ * HOT WATER LOOP SUPPLY OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 5 * ~~~ * *** * ~~~ * Possible things to look for to correct this problem are: * ~~~ * Capacity, Operation Scheme, Mass flow problems, Pump Heat building up over time. * ~~~ * Try a shorter runperiod to stop before it fatals and look at * ~~~ * lots of node time series data to see what is going wrong. * ~~~ * If this is happening during Warmup, you can use Output:Diagnostics,ReportDuringWarmup; * ~~~ * This is detected at the loop level, but the typical problems are in the components. * Fatal * CheckForRunawayPlantTemps: Simulation terminated because of run away plant temperatures, too hot

Openstudio failed when usingLow Temp Radiant Const Flow

On this forum I have already read several articles on this topic. But I can't help it. My program failed every time I implement the Low Temp Radiant Const Flow.

Can someone tell me why my program failed and how to do it properly?

here are some photos in openstudio: C:\fakepath\foto 1.png C:\fakepath\foto 2.png C:\fakepath\foto 3.png C:\fakepath\foto 4.png C:\fakepath\foto 5.png C:\fakepath\foto 6.png

I use the low temperature to model floor ~~heating. some~~ heating.

Some information about the floor heating:

constant temperature of 21 ° C my Internal source layer consists of: reinforced concrete / foam / polyurethane / floating screed (you can see this on the photo)

This is the error that I get when using Low Temp Radiant Const Flow

Warning * Check input. Calc Pump Efficiency=2.15222E-002% which is less than 50%, for pump in radiant system LOW TEMP RADIANT CONST FLOW * Beginning Plant Sizing Calculations * Warning * GetOAControllerInputs: Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1 * ~~~ * Cannot locate a matching DesignSpecification:OutdoorAir object for Zone="THERMAL ZONE 1". * ~~~ * Using default OA of 0.00944 m3/s-person and 0.0 m3/s-m2. * Severe * Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1", Design Specification Outdoor Air Object Name blank * ~~~ * For Zone="THERMAL ZONE 1". * ~~~ * This field either needs to be filled in in this object or Sizing:Zone object. * ~~~ * For this run, default values for these fields will be used. * Warning * Controller:MechanicalVentilation = "CONTROLLER MECHANICAL VENTILATION 1", Zone="THERMAL ZONE 1". * ~~~ * No "PEOPLE" object has been specified in the idf for this zone, but the ventilation rate is > 0 in this Controller:MechanicalVentilation Object. * ~~~ * Check ventilation rate in Controller:MechanicalVentilation object. Simulation will continue. * Warning * Output:Meter: invalid Key Name="DISTRICTCOOLING:FACILITY" - not found. * Warning * Output:Meter: invalid Key Name="DISTRICTHEATING:FACILITY" - not found. * Warning * Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr Testing Individual Branch Integrity All Branches passed integrity testing Testing Individual Supply Air Path Integrity All Supply Air Paths passed integrity testing Testing Individual Return Air Path Integrity All Return Air Paths passed integrity testing No node connection errors were found. Beginning Simulation * Warning * GetSpecificHeatGlycol: Temperature is out of range (too high) for fluid [WATER] specific heat * * ~~~ * ..Called From:CalcSimpleHeatingCoil,Temperature=[137.06], supplied data range=[0.00,125.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Warning * GetDensityGlycol: Temperature is out of range (too high) for fluid [WATER] density * * ~~~ * ..Called From:PlantPumps:CalcPumps: ,Temperature=[137.12], supplied data range=[0.00,100.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Severe * Plant temperatures are getting far too hot, check controls and relative loads and capacities * ~~~ * Environment=RUN PERIOD 1, at Simulation time=05/20 20:40 - 20:50 * ~~~ * PlantLoop Name (SupplySide)= HOT WATER LOOP * ~~~ * PlantLoop Setpoint Temperature=67.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) does not have a Setpoint. * ~~~ * PlantLoop Inlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) has a Setpoint. * ~~~ * PlantLoop Outlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) "NODE 13" has temperature=300.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) "NODE 12" has temperature=300.0 {C} * ~~~ * PlantLoop Minimum Temperature=0.0 {C} * ~~~ * PlantLoop Maximum Temperature=100.0 {C} * ~~~ * PlantLoop Flow Request (SupplySide)=0.0 {kg/s} * ~~~ * PlantLoop Flow Request (DemandSide)=1.1 {kg/s} * ~~~ * PlantLoop Node (SupplySide) "NODE 13" has mass flow rate =1.1 {kg/s} * ~~~ * PlantLoop PumpHeat (SupplySide)=252.0 {W} * ~~~ * PlantLoop PumpHeat (DemandSide)=0.0 {W} * ~~~ * PlantLoop Cooling Demand=1049914.2 {W} * ~~~ * PlantLoop Heating Demand=0.0 {W} * ~~~ * PlantLoop Demand not Dispatched=0.0 {W} * ~~~ * PlantLoop Unmet Demand=-1049914.2 {W} * ~~~ * PlantLoop Capacity=49598.3 {W} * ~~~ * PlantLoop Capacity (SupplySide)=49598.3 {W} * ~~~ * PlantLoop Capacity (DemandSide)=0.0 {W} * ~~~ * PlantLoop Operation Scheme=HOT WATER LOOP OPERATION SCHEMES * ~~~ * PlantLoop Operation Dispatched Load = 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (SupplySide)= 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (DemandSide)= 0.0 {W} * ~~~ * Branches on the Loop. * ~~~ * Demand Branches: * ~~~ * HOT WATER LOOP DEMAND INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 3 * ~~~ * HOT WATER LOOP DEMAND BRANCH 1 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 2 * ~~~ * HOT WATER LOOP DEMAND BRANCH 2 * ~~~ * Components on Branch: * ~~~ * COIL:HEATING:WATER:COIL HEATING WATER 1 * ~~~ * HOT WATER LOOP DEMAND BRANCH 3 * ~~~ * Components on Branch: * ~~~ * ZONEHVAC:LOWTEMPERATURERADIANT:CONSTANTFLOW:LOW TEMP RADIANT CONST FLOW * ~~~ * HOT WATER LOOP DEMAND BYPASS BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:HOT WATER LOOP DEMAND BYPASS PIPE * ~~~ * HOT WATER LOOP DEMAND OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 4 * ~~~ * Supply Branches: * ~~~ * HOT WATER LOOP SUPPLY INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PUMP:VARIABLESPEED:PUMP VARIABLE SPEED 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 1 * ~~~ * Components on Branch: * ~~~ * BOILER:HOTWATER:BOILER HOT WATER 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 2 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 1 * ~~~ * HOT WATER LOOP SUPPLY OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 5 * ~~~ * *** * ~~~ * Possible things to look for to correct this problem are: * ~~~ * Capacity, Operation Scheme, Mass flow problems, Pump Heat building up over time. * ~~~ * Try a shorter runperiod to stop before it fatals and look at * ~~~ * lots of node time series data to see what is going wrong. * ~~~ * If this is happening during Warmup, you can use Output:Diagnostics,ReportDuringWarmup; * ~~~ * This is detected at the loop level, but the typical problems are in the components. * Fatal * CheckForRunawayPlantTemps: Simulation terminated because of run away plant temperatures, too hot

Openstudio failed when usingLow Temp Radiant Const Flow

On this forum I have already read several articles on this topic. But I can't help it. My program failed every time I implement the Low Temp Radiant Const Flow.

Can someone tell me why my program failed and how to do it properly?

here are some photos in openstudio: C:\fakepath\foto 1.png C:\fakepath\foto 2.png C:\fakepath\foto 3.png C:\fakepath\foto 4.png C:\fakepath\foto 5.png C:\fakepath\foto 6.png

I use the low temperature to model floor heating.

Some information about the floor heating:

constant temperature of 21 ° C C

my Internal source layer consists ~~of:~~ of (you can see this on the photo):

reinforced concrete / foam / polyurethane / floating screed (you can see this on the photo)screed

This is the error that I get when using Low Temp Radiant Const Flow

Warning * Check input. Calc Pump Efficiency=2.15222E-002% which is less than 50%, for pump in radiant system LOW TEMP RADIANT CONST FLOW * Beginning Plant Sizing Calculations * Warning * GetOAControllerInputs: Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1 * ~~~ * Cannot locate a matching DesignSpecification:OutdoorAir object for Zone="THERMAL ZONE 1". * ~~~ * Using default OA of 0.00944 m3/s-person and 0.0 m3/s-m2. * Severe * Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1", Design Specification Outdoor Air Object Name blank * ~~~ * For Zone="THERMAL ZONE 1". * ~~~ * This field either needs to be filled in in this object or Sizing:Zone object. * ~~~ * For this run, default values for these fields will be used. * Warning * Controller:MechanicalVentilation = "CONTROLLER MECHANICAL VENTILATION 1", Zone="THERMAL ZONE 1". * ~~~ * No "PEOPLE" object has been specified in the idf for this zone, but the ventilation rate is > 0 in this Controller:MechanicalVentilation Object. * ~~~ * Check ventilation rate in Controller:MechanicalVentilation object. Simulation will continue. * Warning * Output:Meter: invalid Key Name="DISTRICTCOOLING:FACILITY" - not found. * Warning * Output:Meter: invalid Key Name="DISTRICTHEATING:FACILITY" - not found. * Warning * Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr Testing Individual Branch Integrity All Branches passed integrity testing Testing Individual Supply Air Path Integrity All Supply Air Paths passed integrity testing Testing Individual Return Air Path Integrity All Return Air Paths passed integrity testing No node connection errors were found. Beginning Simulation * Warning * GetSpecificHeatGlycol: Temperature is out of range (too high) for fluid [WATER] specific heat * * ~~~ * ..Called From:CalcSimpleHeatingCoil,Temperature=[137.06], supplied data range=[0.00,125.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Warning * GetDensityGlycol: Temperature is out of range (too high) for fluid [WATER] density * * ~~~ * ..Called From:PlantPumps:CalcPumps: ,Temperature=[137.12], supplied data range=[0.00,100.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Severe * Plant temperatures are getting far too hot, check controls and relative loads and capacities * ~~~ * Environment=RUN PERIOD 1, at Simulation time=05/20 20:40 - 20:50 * ~~~ * PlantLoop Name (SupplySide)= HOT WATER LOOP * ~~~ * PlantLoop Setpoint Temperature=67.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) does not have a Setpoint. * ~~~ * PlantLoop Inlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) has a Setpoint. * ~~~ * PlantLoop Outlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) "NODE 13" has temperature=300.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) "NODE 12" has temperature=300.0 {C} * ~~~ * PlantLoop Minimum Temperature=0.0 {C} * ~~~ * PlantLoop Maximum Temperature=100.0 {C} * ~~~ * PlantLoop Flow Request (SupplySide)=0.0 {kg/s} * ~~~ * PlantLoop Flow Request (DemandSide)=1.1 {kg/s} * ~~~ * PlantLoop Node (SupplySide) "NODE 13" has mass flow rate =1.1 {kg/s} * ~~~ * PlantLoop PumpHeat (SupplySide)=252.0 {W} * ~~~ * PlantLoop PumpHeat (DemandSide)=0.0 {W} * ~~~ * PlantLoop Cooling Demand=1049914.2 {W} * ~~~ * PlantLoop Heating Demand=0.0 {W} * ~~~ * PlantLoop Demand not Dispatched=0.0 {W} * ~~~ * PlantLoop Unmet Demand=-1049914.2 {W} * ~~~ * PlantLoop Capacity=49598.3 {W} * ~~~ * PlantLoop Capacity (SupplySide)=49598.3 {W} * ~~~ * PlantLoop Capacity (DemandSide)=0.0 {W} * ~~~ * PlantLoop Operation Scheme=HOT WATER LOOP OPERATION SCHEMES * ~~~ * PlantLoop Operation Dispatched Load = 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (SupplySide)= 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (DemandSide)= 0.0 {W} * ~~~ * Branches on the Loop. * ~~~ * Demand Branches: * ~~~ * HOT WATER LOOP DEMAND INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 3 * ~~~ * HOT WATER LOOP DEMAND BRANCH 1 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 2 * ~~~ * HOT WATER LOOP DEMAND BRANCH 2 * ~~~ * Components on Branch: * ~~~ * COIL:HEATING:WATER:COIL HEATING WATER 1 * ~~~ * HOT WATER LOOP DEMAND BRANCH 3 * ~~~ * Components on Branch: * ~~~ * ZONEHVAC:LOWTEMPERATURERADIANT:CONSTANTFLOW:LOW TEMP RADIANT CONST FLOW * ~~~ * HOT WATER LOOP DEMAND BYPASS BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:HOT WATER LOOP DEMAND BYPASS PIPE * ~~~ * HOT WATER LOOP DEMAND OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 4 * ~~~ * Supply Branches: * ~~~ * HOT WATER LOOP SUPPLY INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PUMP:VARIABLESPEED:PUMP VARIABLE SPEED 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 1 * ~~~ * Components on Branch: * ~~~ * BOILER:HOTWATER:BOILER HOT WATER 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 2 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 1 * ~~~ * HOT WATER LOOP SUPPLY OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 5 * ~~~ * *** * ~~~ * Possible things to look for to correct this problem are: * ~~~ * Capacity, Operation Scheme, Mass flow problems, Pump Heat building up over time. * ~~~ * Try a shorter runperiod to stop before it fatals and look at * ~~~ * lots of node time series data to see what is going wrong. * ~~~ * If this is happening during Warmup, you can use Output:Diagnostics,ReportDuringWarmup; * ~~~ * This is detected at the loop level, but the typical problems are in the components. * Fatal * CheckForRunawayPlantTemps: Simulation terminated because of run away plant temperatures, too hot

Openstudio failed when usingLow Temp Radiant Const Flow

On this forum I have already read several articles on this topic. But I can't help it. My program failed every time I implement the Low Temp Radiant Const Flow.

Can someone tell me why my program failed and how to do it properly?

~~here are some photos in openstudio: C:\fakepath\foto 1.png C:\fakepath\foto 2.png C:\fakepath\foto 3.png C:\fakepath\foto 4.png C:\fakepath\foto 5.png C:\fakepath\foto 6.png~~

I use the low temperature to model floor heating.

Some information about the floor heating:

constant temperature of 21 ° C
my Internal source layer consists of (you can see this on the photo):
```
 reinforced concrete / foam / polyurethane / floating screed
```

here are some photos in openstudio:

$C:\fakepath\foto 1.png$

$C:\fakepath\foto 2.png$

$C:\fakepath\foto 3.png$

$C:\fakepath\foto 4.png$

$C:\fakepath\foto 5.png$

$C:\fakepath\foto 6.png$

This is the error that I get when using Low Temp Radiant Const Flow

* Warning * Check input. Calc Pump Efficiency=2.15222E-002% which is less than 50%, for pump in radiant system LOW TEMP RADIANT CONST FLOW * *** Beginning Plant Sizing Calculations * Warning * GetOAControllerInputs: Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1 * ~~~ * Cannot locate a matching DesignSpecification:OutdoorAir object for Zone="THERMAL ZONE 1". * ~~~ * Using default OA of 0.00944 m3/s-person and 0.0 m3/s-m2. * Severe * Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1", Design Specification Outdoor Air Object Name blank * ~~~ * For Zone="THERMAL ZONE 1". * ~~~ * This field either needs to be filled in in this object or Sizing:Zone object. * ~~~ * For this run, default values for these fields will be used. * Warning * Controller:MechanicalVentilation = "CONTROLLER MECHANICAL VENTILATION 1", Zone="THERMAL ZONE 1". * ~~~ * No "PEOPLE" object has been specified in the idf for this zone, but the ventilation rate is > 0 in this Controller:MechanicalVentilation Object. * ~~~ * Check ventilation rate in Controller:MechanicalVentilation object. Simulation will continue. * Warning * Output:Meter: invalid Key Name="DISTRICTCOOLING:FACILITY" - not found. * Warning * Output:Meter: invalid Key Name="DISTRICTHEATING:FACILITY" - not found. * Warning * Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr *** Testing Individual Branch Integrity *** All Branches passed integrity testing *** Testing Individual Supply Air Path Integrity *** All Supply Air Paths passed integrity testing *** Testing Individual Return Air Path Integrity *** All Return Air Paths passed integrity testing *** No node connection errors were found. *** Beginning Simulation * Warning * GetSpecificHeatGlycol: Temperature is out of range (too high) for fluid [WATER] specific heat * * ~~~ * ..Called From:CalcSimpleHeatingCoil,Temperature=[137.06], supplied data range=[0.00,125.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Warning * GetDensityGlycol: Temperature is out of range (too high) for fluid [WATER] density * * ~~~ * ..Called From:PlantPumps:CalcPumps: ,Temperature=[137.12], supplied data range=[0.00,100.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Severe * Plant temperatures are getting far too hot, check controls and relative loads and capacities * ~~~ * Environment=RUN PERIOD 1, at Simulation time=05/20 20:40 - 20:50 * ~~~ * PlantLoop Name (SupplySide)= HOT WATER LOOP * ~~~ * PlantLoop Setpoint Temperature=67.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) does not have a Setpoint. * ~~~ * PlantLoop Inlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) has a Setpoint. * ~~~ * PlantLoop Outlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) "NODE 13" has temperature=300.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) "NODE 12" has temperature=300.0 {C} * ~~~ * PlantLoop Minimum Temperature=0.0 {C} * ~~~ * PlantLoop Maximum Temperature=100.0 {C} * ~~~ * PlantLoop Flow Request (SupplySide)=0.0 {kg/s} * ~~~ * PlantLoop Flow Request (DemandSide)=1.1 {kg/s} * ~~~ * PlantLoop Node (SupplySide) "NODE 13" has mass flow rate =1.1 {kg/s} * ~~~ * PlantLoop PumpHeat (SupplySide)=252.0 {W} * ~~~ * PlantLoop PumpHeat (DemandSide)=0.0 {W} * ~~~ * PlantLoop Cooling Demand=1049914.2 {W} * ~~~ * PlantLoop Heating Demand=0.0 {W} * ~~~ * PlantLoop Demand not Dispatched=0.0 {W} * ~~~ * PlantLoop Unmet Demand=-1049914.2 {W} * ~~~ * PlantLoop Capacity=49598.3 {W} * ~~~ * PlantLoop Capacity (SupplySide)=49598.3 {W} * ~~~ * PlantLoop Capacity (DemandSide)=0.0 {W} * ~~~ * PlantLoop Operation Scheme=HOT WATER LOOP OPERATION SCHEMES * ~~~ * PlantLoop Operation Dispatched Load = 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (SupplySide)= 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (DemandSide)= 0.0 {W} * ~~~ * Branches on the Loop. * ~~~ * Demand Branches: * ~~~ * HOT WATER LOOP DEMAND INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 3 * ~~~ * HOT WATER LOOP DEMAND BRANCH 1 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 2 * ~~~ * HOT WATER LOOP DEMAND BRANCH 2 * ~~~ * Components on Branch: * ~~~ * COIL:HEATING:WATER:COIL HEATING WATER 1 * ~~~ * HOT WATER LOOP DEMAND BRANCH 3 * ~~~ * Components on Branch: * ~~~ * ZONEHVAC:LOWTEMPERATURERADIANT:CONSTANTFLOW:LOW TEMP RADIANT CONST FLOW * ~~~ * HOT WATER LOOP DEMAND BYPASS BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:HOT WATER LOOP DEMAND BYPASS PIPE * ~~~ * HOT WATER LOOP DEMAND OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 4 * ~~~ * Supply Branches: * ~~~ * HOT WATER LOOP SUPPLY INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PUMP:VARIABLESPEED:PUMP VARIABLE SPEED 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 1 * ~~~ * Components on Branch: * ~~~ * BOILER:HOTWATER:BOILER HOT WATER 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 2 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 1 * ~~~ * HOT WATER LOOP SUPPLY OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 5 * ~~~ * *** ******* * ~~~ * Possible things to look for to correct this problem are: * ~~~ * Capacity, Operation Scheme, Mass flow problems, Pump Heat building up over time. * ~~~ * Try a shorter runperiod to stop before it fatals and look at * ~~~ * lots of node time series data to see what is going wrong. * ~~~ * If this is happening during Warmup, you can use Output:Diagnostics,ReportDuringWarmup; * ~~~ * This is detected at the loop level, but the typical problems are in the components. * Fatal * CheckForRunawayPlantTemps: Simulation terminated because of run away plant temperatures, too hot

hot

Openstudio failed when usingLow Temp Radiant Const Flow

On this forum I have already read several articles on this topic. But I can't help it. My program failed every time I implement the Low Temp Radiant Const Flow.

Can someone tell me why my program failed and how to do it properly?

I use the low temperature to model floor heating.

Some information about the floor heating:

constant temperature of 21 ° C
my Internal source layer consists of (you can see this on the photo):
```
 reinforced concrete / foam / polyurethane / floating screed
```

here are some photos in openstudio:

~~$C:\fakepath\foto 1.png$~~

$C:\fakepath\foto 2.png$

$C:\fakepath\foto 3.png$

$C:\fakepath\foto 4.png$ image description

$C:\fakepath\foto 5.png$

$C:\fakepath\foto 6.png$

This is the error that I get when using Low Temp Radiant Const Flow

 * Warning * Check input. Calc Pump Efficiency=2.15222E-002% which is less than 50%, for pump in radiant system LOW TEMP RADIANT CONST FLOW *** Beginning Plant Sizing Calculations * Warning * GetOAControllerInputs: Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1 * ~~~ * Cannot locate a matching DesignSpecification:OutdoorAir object for Zone="THERMAL ZONE 1". * ~~~ * Using default OA of 0.00944 m3/s-person and 0.0 m3/s-m2. * Severe * Controller:MechanicalVentilation="CONTROLLER MECHANICAL VENTILATION 1", Design Specification Outdoor Air Object Name blank * ~~~ * For Zone="THERMAL ZONE 1". * ~~~ * This field either needs to be filled in in this object or Sizing:Zone object. * ~~~ * For this run, default values for these fields will be used. * Warning * Controller:MechanicalVentilation = "CONTROLLER MECHANICAL VENTILATION 1", Zone="THERMAL ZONE 1". * ~~~ * No "PEOPLE" object has been specified in the idf for this zone, but the ventilation rate is > 0 in this Controller:MechanicalVentilation Object. * ~~~ * Check ventilation rate in Controller:MechanicalVentilation object. Simulation will continue. * Warning * Output:Meter: invalid Key Name="DISTRICTCOOLING:FACILITY" - not found. * Warning * Output:Meter: invalid Key Name="DISTRICTHEATING:FACILITY" - not found. * Warning * Output:Meter:MeterFileOnly requested for "Electricity:Facility" (TimeStep), already on "Output:Meter". Will report to both eplusout.eso and eplusout.mtr *** Testing Individual Branch Integrity *** All Branches passed integrity testing *** Testing Individual Supply Air Path Integrity *** All Supply Air Paths passed integrity testing *** Testing Individual Return Air Path Integrity *** All Return Air Paths passed integrity testing *** No node connection errors were found. *** Beginning Simulation * Warning * GetSpecificHeatGlycol: Temperature is out of range (too high) for fluid [WATER] specific heat * * ~~~ * ..Called From:CalcSimpleHeatingCoil,Temperature=[137.06], supplied data range=[0.00,125.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Warning * GetDensityGlycol: Temperature is out of range (too high) for fluid [WATER] density * * ~~~ * ..Called From:PlantPumps:CalcPumps: ,Temperature=[137.12], supplied data range=[0.00,100.00] * ~~~ * Environment=BRUSSELS ANN HTG WIND 99.6% CONDNS WS=>MCDB, at Simulation time=01/21 00:00 - 00:10 * Severe * Plant temperatures are getting far too hot, check controls and relative loads and capacities * ~~~ * Environment=RUN PERIOD 1, at Simulation time=05/20 20:40 - 20:50 * ~~~ * PlantLoop Name (SupplySide)= HOT WATER LOOP * ~~~ * PlantLoop Setpoint Temperature=67.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) does not have a Setpoint. * ~~~ * PlantLoop Inlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) has a Setpoint. * ~~~ * PlantLoop Outlet Node (DemandSide) does not have a Setpoint. * ~~~ * PlantLoop Outlet Node (SupplySide) "NODE 13" has temperature=300.0 {C} * ~~~ * PlantLoop Inlet Node (SupplySide) "NODE 12" has temperature=300.0 {C} * ~~~ * PlantLoop Minimum Temperature=0.0 {C} * ~~~ * PlantLoop Maximum Temperature=100.0 {C} * ~~~ * PlantLoop Flow Request (SupplySide)=0.0 {kg/s} * ~~~ * PlantLoop Flow Request (DemandSide)=1.1 {kg/s} * ~~~ * PlantLoop Node (SupplySide) "NODE 13" has mass flow rate =1.1 {kg/s} * ~~~ * PlantLoop PumpHeat (SupplySide)=252.0 {W} * ~~~ * PlantLoop PumpHeat (DemandSide)=0.0 {W} * ~~~ * PlantLoop Cooling Demand=1049914.2 {W} * ~~~ * PlantLoop Heating Demand=0.0 {W} * ~~~ * PlantLoop Demand not Dispatched=0.0 {W} * ~~~ * PlantLoop Unmet Demand=-1049914.2 {W} * ~~~ * PlantLoop Capacity=49598.3 {W} * ~~~ * PlantLoop Capacity (SupplySide)=49598.3 {W} * ~~~ * PlantLoop Capacity (DemandSide)=0.0 {W} * ~~~ * PlantLoop Operation Scheme=HOT WATER LOOP OPERATION SCHEMES * ~~~ * PlantLoop Operation Dispatched Load = 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (SupplySide)= 0.0 {W} * ~~~ * PlantLoop Operation Dispatched Load (DemandSide)= 0.0 {W} * ~~~ * Branches on the Loop. * ~~~ * Demand Branches: * ~~~ * HOT WATER LOOP DEMAND INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 3 * ~~~ * HOT WATER LOOP DEMAND BRANCH 1 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 2 * ~~~ * HOT WATER LOOP DEMAND BRANCH 2 * ~~~ * Components on Branch: * ~~~ * COIL:HEATING:WATER:COIL HEATING WATER 1 * ~~~ * HOT WATER LOOP DEMAND BRANCH 3 * ~~~ * Components on Branch: * ~~~ * ZONEHVAC:LOWTEMPERATURERADIANT:CONSTANTFLOW:LOW TEMP RADIANT CONST FLOW * ~~~ * HOT WATER LOOP DEMAND BYPASS BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:HOT WATER LOOP DEMAND BYPASS PIPE * ~~~ * HOT WATER LOOP DEMAND OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 4 * ~~~ * Supply Branches: * ~~~ * HOT WATER LOOP SUPPLY INLET BRANCH * ~~~ * Components on Branch: * ~~~ * PUMP:VARIABLESPEED:PUMP VARIABLE SPEED 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 1 * ~~~ * Components on Branch: * ~~~ * BOILER:HOTWATER:BOILER HOT WATER 1 * ~~~ * HOT WATER LOOP SUPPLY BRANCH 2 * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 1 * ~~~ * HOT WATER LOOP SUPPLY OUTLET BRANCH * ~~~ * Components on Branch: * ~~~ * PIPE:ADIABATIC:PIPE ADIABATIC 5 * ~~~ * ******* * ~~~ * Possible things to look for to correct this problem are: * ~~~ * Capacity, Operation Scheme, Mass flow problems, Pump Heat building up over time. * ~~~ * Try a shorter runperiod to stop before it fatals and look at * ~~~ * lots of node time series data to see what is going wrong. * ~~~ * If this is happening during Warmup, you can use Output:Diagnostics,ReportDuringWarmup; * ~~~ * This is detected at the loop level, but the typical problems are in the components. * Fatal * CheckForRunawayPlantTemps: Simulation terminated because of run away plant temperatures, too hot