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[EnergyPlus_Support] Zero flow?
I am currently working with a simple .idf file but am experiencing zero flow
in the plant loop. This is a test file as I am looking at what we need to do
to implement radiators. I have been looking at it for some time now and can
not see why I get the zero flow - perhaps I've been looking at it too long.
Would appreciate it if sombody could have a quick look over the file below
to see if there is anything simple I have missed.
Many thanks.
Brian
Hevacomp
File reads as follows:
-------------------
Version,1.2.3;
Timestep in hour, 4 ;
Building,Hevacomp, 360 ,City,0.04,0.004,FullExterior,25;
Solution algorithm,CTF;
DaylightSavingPeriod,3 / 26,10 / 28;
AirFlow Model,Simple;
Inside convection algorithm,Detailed;
Outside convection algorithm,Detailed;
Run control,No,No,No,No,Yes;
SurfaceGeometry,LowerRightCorner,CounterClockWise,Relative;
RunPeriod, 4 , 28 , 4 , 28 ,Monday,No,No,No,Yes,Yes;
Location,LONDON, 51.5 ,-0.17 ,0, 36 ;
Material:Regular,MAT1,MediumRough, 0.1 , 0.84 , 1700 , 800 , 0.9 , 0.6 , 0.6
;
Material:Regular,MAT2,MediumRough, 0.025 , 0.02 , 30 , 1000 , 0.9 , 0.6 ,
0.6 ;
Material:Regular,MAT3,MediumRough, 0.1 , 0.08 , 400 , 1100 , 0.9 , 0.6 , 0.6
;
Material:Regular,MAT4,MediumRough, 0.015 , 0.16 , 950 , 840 , 0.9 , 0.6 ,
0.6 ;
Material:Regular,MAT5,MediumRough, 0.08 , 0.13 , 1600 , 1000 , 0.05 , 0.01 ,
0.01 ;
Material:Regular,MAT6,MediumRough, 0.016 , 0.56 , 1300 , 1000 , 0.05 , 0.01
, 0.01 ;
Material:Regular,MAT7,MediumRough, 0.15 , 1.4 , 2100 , 840 , 0.9 , 0.6 , 0.6
;
Material:Regular,MAT8,MediumRough, 0.05 , 0.41 , 1200 , 840 , 0.9 , 0.6 ,
0.6 ;
Material:Regular,MATFURN1,MediumRough, 0.01 , 0.1 , 600 , 1000 , 0.9 , 0.6 ,
0.6 ;
Material:Regular,MATFURN2,MediumRough, 0.025 , 0.1 , 600 , 1000 , 0.9 , 0.6
, 0.6 ;
Material:Regular,MATFURN3,MediumRough, 0.2 , 0.1 , 600 , 1000 , 0.9 , 0.6 ,
0.6 ;
Material:Regular,DUMMYmat,MediumRough, 1 , 0.03 , 30 , 1000 , 0.01 , 0.01 ,
0.01 ;
Material:Air,AIR1, 0.1308573 ;
Construction,WALLS-1,MAT1,AIR1,MAT2,MAT3,MAT4;
Construction,ROOFS-16,MAT5,MAT6;
Construction,FLOORS-1,MAT6,MAT7,MAT8;
Construction,FURN1,MATFURN1;
Construction,FURN2,MATFURN2;
Construction,FURN3,MATFURN3;
Construction,DUMMY,DUMMYmat;
!------------>
Material:Regular,MATRAD1,MediumRough, 0.2 , 0.1 , 600 , 1000 , 0.9 , 0.6 ,
0.6 ;
CONSTRUCTION WITH INTERNAL SOURCE,
RAD1, !- Name
2, !- Source present after layer N1
2, !- Temperature calculation requested after layer N2
1, !- Dimensions for the CTF calculation
0.1, !- Tube Spacing {m}
MATRAD1, !- Outside Layer
MATRAD1, !- Middle Layer
MATRAD1; !- Inside Layer
!------------>
Material:Windowglass,GLASS1,SpectralAverage,, 0.006 , 0.78 , 0.07 , 0.07 ,
0.78 , 0.07 , 0.07 , 0 , 0.845 , 0.845 , 1 ;
Construction,WINDOW-1-NOSHADE,GLASS1;
GroundTemperatures, 18 , 18 , 18 , 18 , 18 , 18 , 18 , 18 , 18 , 18 , 18 ,
18 ;
GroundReflectances, 0.2 , 0.2 , 0.2 , 0.2 , 0.2 , 0.2 , 0.2 , 0.2 , 0.2 ,
0.2 , 0.2 , 0.2 ;
Zone,R1,0, 0 , 0 , 0 ,, 1 , 3 , 118.8 ;
Infiltration,R1Infil1,R1,SCHED INFILbasic, 1.64999993642171E-02 ,1,0,0,0;
Lights,R1Lights1,R1,SCHED GAIN1, 792 ,0, 0.12 , 0.18 ,0,GeneralLights;
Surface:HeatTransfer,R1
Surf1-1,WALL,WALLS-1,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0.5 , 4
,
0 , 10 , 0 ,
0 , 10 , 3 ,
2 , 10 , 3 ,
2 , 10 , 0 ;
Surface:HeatTransfer,R1
Surf2-1,WALL,WALLS-1,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0.5 , 4
,
2 , 10 , 0 ,
2 , 10 , 3 ,
8 , 10 , 3 ,
8 , 10 , 0 ;
Surface:HeatTransfer:Sub,R1 Surf3-1-NOSHADE,WINDOW,WINDOW-1-NOSHADE,R1
Surf2-1,, 0.5 ,,R1 Surf3-1Frame, 1 , 4 ,
2 , 10 , 1.2 ,
2 , 10 , 2.8 ,
8 , 10 , 2.8 ,
8 , 10 , 1.2 ;
WindowFrameAndDivider,R1 Surf3-1Frame, 0.08336397 , 0 , 0 , 5 ,1.0, 1 , 1 ,
0.9 ,DividedLite,0,0,0,0,0,0,1,1,1,0.9, 0.8 , 0 , 0.8 , 0 , 0.8 ;
Surface:HeatTransfer,R1
Surf4-1,WALL,WALLS-1,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0.5 , 4
,
8 , 10 , 0 ,
8 , 10 , 3 ,
10 , 10 , 3 ,
10 , 10 , 0 ;
Surface:HeatTransfer,R1
Surf5-1,WALL,WALLS-1,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0.5 , 4
,
10 , 10 , 0 ,
10 , 10 , 3 ,
10 , 0 , 3 ,
10 , 0 , 0 ;
Surface:HeatTransfer,R1
Surf6-1,WALL,WALLS-1,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0.5 , 4
,
10 , 0 , 0 ,
10 , 0 , 3 ,
0 , 0 , 3 ,
0 , 0 , 0 ;
Surface:HeatTransfer,R1
Surf7-1,WALL,WALLS-1,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0.5 , 4
,
0 , 0 , 0 ,
0 , 0 , 3 ,
0 , 10 , 3 ,
0 , 10 , 0 ;
Surface:HeatTransfer,R1
Surf8-1,ROOF,ROOFS-16,R1,ExteriorEnvironment,,SunExposed,WindExposed, 0 , 4
,
0 , 10 , 3 ,
0 , 0 , 3 ,
10 , 0 , 3 ,
10 , 10 , 3 ;
Surface:HeatTransfer,R1 Surf9-1,FLOOR,FLOORS-1,R1,OtherZoneSurface,R1
Surf9-1,NoSun,NoWind,0, 4 ,
10 , 10 , 0 ,
10 , 0 , 0 ,
0 , 0 , 0 ,
0 , 10 , 0 ;
Surface:HeatTransfer:InternalMass,R1-FURN,FURN2,R1, 39.6 ;
!------------>
Surface:HeatTransfer,SURF-R1-RADIATOR,
WALL,RAD1,
R1,
ExteriorEnvironment,,NoSun,NoWind,0.5,4,
8,9.95,0.1, 8,9.95,1.1, 2,9.95,1.1, 2,9.95,0.1;
!alternative radiator size extending outside building (half-height,
double-length)
! 11,9.95,0.1, 11,9.95,0.6, -1,9.95,0.6, -1,9.95,0.1;
!------------>
BRANCH,
R1RADBRANCH, !- Branch Name
0, !- Maximum Branch Flow Rate {m3/s}
LOW TEMP RADIANT SYSTEM:CONSTANT FLOW, !- Comp1 Type
R1RAD, !- Comp1 Name
RADWATERINLETNODE, !- Comp1 Inlet Node Name
RADWATEROUTLETNODE, !- Comp1 Outlet Node Name
ACTIVE; !- Comp1 Branch Control Type
CONTROLLED ZONE EQUIP CONFIGURATION,
R1, !- Zone Name
R1EQUIPMENT, !- List Name: Zone Equipment
, !- Node List or Node Name: Zone Air Inlet
Node(s)
, !- Node List or Node Name: Zone Air Exhaust
Node(s)
R1ROOMAIRNODEIN, !- Zone Air Node Name
R1ROOMAIRNODEOUT; !- Zone Return Air Node Name
ZONE EQUIPMENT LIST,
R1EQUIPMENT, !- Name
LOW TEMP RADIANT SYSTEM:CONSTANT FLOW, !- KEY--Zone Equipment Type 1
R1RAD, !- Type Name 1
1, !- Cooling Priority
1; !- Heating Priority
LOW TEMP RADIANT SYSTEM:CONSTANT FLOW,
R1RAD,
RADSCHEDULE,
R1,
SURF-R1-RADIATOR,
0.012,
400,
OPERATIVE,
0.0004,
,
75000,
50,
0.70,
0,
RADWATERINLETNODE, !- heating water inlet node
RADWATEROUTLETNODE, !- heating water outlet node
RADHEATHIGHWATERTEMP, !- heating high water temperature schedule
RADHEATLOWWATERTEMP, !- heating low water temperature schedule
RADHEATHIGHCONTROLTEMP, !- heating high control temperature schedule
RADHEATLOWCONTROLTEMP; !- heating low control temperature schedule
Schedule:Compact,RADSCHEDULE,Any,Through:12/31,For:AllDays,Until:24:00,1;
Schedule:Compact,RADHEATHIGHWATERTEMP,Any,Through:12/31,For:AllDays,Until:24:00,50;
Schedule:Compact,RADHEATLOWWATERTEMP,Any,Through:12/31,For:AllDays,Until:24:00,30;
Schedule:Compact,RADHEATHIGHCONTROLTEMP,Any,Through:12/31,For:AllDays,Until:24:00,21;
Schedule:Compact,RADHEATLOWCONTROLTEMP,Any,Through:12/31,For:AllDays,Until:24:00,15;
!------------>
!define the plant heating for use with the radiator
PIPE,X1:BypassDemandPipe,
X1:BypassDemandIn,X1:BypassDemandOut;
Branch,X1:BypassDemand,,
PIPE,X1:BypassDemandPipe,
X1:BypassDemandIn,X1:BypassDemandOut,BYPASS;
PIPE,X1:DemandPipeIn,
X1DemandIn,X1DemandInA;
PIPE,X1:DemandPipeOut,
X1DemandOutA,X1DemandOut;
BRANCH,X1:DemandIn,,
Pipe,X1:DemandPipeIn,
X1DemandIn,X1DemandInA,Passive;
BRANCH,X1:DemandOut,,
Pipe,X1:DemandPipeOut,
X1DemandOutA,X1DemandOut,Passive;
BRANCH LIST,X1:DemandBlist,
X1:DemandIn,R1RADBRANCH,X1:BypassDemand,X1:DemandOut;
SPLITTER,X1:DemandSplit,
X1:Demandin,
R1RADBRANCH,
X1:BypassDemand;
MIXER,X1:DemandMix,
X1:DemandOut,
R1RADBRANCH,
X1:BypassDemand;
CONNECTOR LIST,
X1:DemandClist,
SPLITTER,X1:DemandSplit,
MIXER,X1:DemandMix;
PLANT LOOP,X1:Loop, Water,X1:LoopOp, X1out,90,1,autosize,0.0001,autosize,
X1in,X1out,X1:Blist,X1:Clist,
X1DemandIn,X1DemandOut,X1:DemandBlist,X1:DemandClist,Sequential;
PLANT SIZING,X1:Loop,Heating, 80 , 10 ;
BOILER:SIMPLE,X1:Plant1,NaturalGas,autosize, 0.8 , 80 , autosize , 0.1 , 1 ,
1 , 1 , 0 , 0 ,X1:Plant1In, X1:Plant1Out, 90 ,ConstantFlow, 0 ;
PUMP:CONSTANT SPEED,X1:Pump,X1in,X1inA, autosize , 100000 ,autosize, 0.9 , 0
,CONTINUOUS;
PLANT EQUIPMENT LIST,X1:Pequip,BOILER:SIMPLE,X1:Plant1;
PLANT OPERATION SCHEMES,X1:LoopOp,HEATING LOAD RANGE BASED
OPERATION,X1:Control,Psched:1;
HEATING LOAD RANGE BASED OPERATION,X1:Control,0,10000000,X1:Pequip;
SET POINT MANAGER:SCHEDULED,X1:Smanage,TEMP,X1:Tsched,X1:Nlist;
NODE LIST,X1:Nlist,X1out;
Schedule:Compact,X1:Tsched,Any,Through: 12/31,For: AllDays,Until: 24:00, 80
;
PIPE,X1Bypass,X1:BypassIn,X1:BypassOut;
PIPE,X1:PipeOut,X1OutA,X1out;
BRANCH,X1:in,,PUMP:CONSTANT SPEED,X1:Pump,X1in,X1inA,ACTIVE;
BRANCH,X1:Plant1,,BOILER:SIMPLE,X1:Plant1,X1:Plant1In,X1:Plant1Out,ACTIVE;
BRANCH,X1:Bypass,,PIPE,X1Bypass,X1:BypassIn,X1:BypassOut,BYPASS;
BRANCH,X1:out,,PIPE,X1:PipeOut,X1outA,X1out,PASSIVE;
BRANCH LIST,X1:Blist,X1:in,X1:Plant1,X1:Bypass,X1:out;
CONNECTOR LIST,X1:Clist,SPLITTER,X1:Split,MIXER,X1:Mix;
SPLITTER,X1:Split,X1:In,X1:Plant1,X1:Bypass;
MIXER,X1:Mix,X1:out,X1:Plant1,X1:Bypass;
Schedule:Compact, Psched:1,Any,Through: 12/31,For: AllDays,Until:
1:00,1,Until: 2:00,1,Until: 3:00,1,Until: 4:00,1,Until: 5:00,1,Until:
6:00,1,Until: 7:00,1,Until: 8:00,1,Until: 9:00,1,Until: 10:00,1,Until:
11:00,1,Until: 12:00,1,Until: 13:00,1,Until: 14:00,1,Until: 15:00,1,Until:
16:00,1,Until: 17:00,1,Until: 18:00,1,Until: 19:00,1,Until: 20:00,1,Until:
21:00,1,Until: 22:00,1,Until: 23:00,1,Until: 24:00,1;
!------------>
ScheduleType,Any;
Schedule:Compact,SCHED INFILbasic,Any,Through: 12/31,For: AllDays,Until:
24:00,1.0;
Schedule:Compact,SCHED GAIN1,Any,Through: 12/31,For: AllDays,Until:
1:00,0,Until: 2:00,0,Until: 3:00,0,Until: 4:00,0,Until: 5:00,0,Until:
6:00,0,Until: 7:00,0,Until: 8:00,0,Until: 9:00,1,Until: 10:00,1,Until:
11:00,1,Until: 12:00,1,Until: 13:00,1,Until: 14:00,1,Until: 15:00,1,Until:
16:00,1,Until: 17:00,1,Until: 18:00,1,Until: 19:00,0,Until: 20:00,0,Until:
21:00,0,Until: 22:00,0,Until: 23:00,0,Until: 24:00,0;
!report variable,*,Outdoor Dry Bulb,hourly;
!report variable,*,Outdoor Wet Bulb,hourly;
report variable,*,Zone Mean Air Temperature,hourly;
!report variable,*,Zone Mean Radiant Temperature,hourly;
!report variable,*,Surface Inside Temperature,hourly;
!report variable,*,Surface Int Convection Coeff,hourly;
report variable,*,Zone Transmitted Solar,hourly;
!report variable,*,Zone Total Internal Latent Gain,hourly;
!report variable,*,Zone Infiltration Sensible Heat Loss,hourly;
!report variable,*,Zone Infiltration Sensible Heat Gain,hourly;
!report variable,*,Electric Equipment Radiant Heat Gain,hourly;
!report variable,*,Electric Equipment Convective Heat Gain,hourly;
!report variable,*,Lights Total Heat Gain,hourly;
!report variable,*,Zone People Sensible Heat Gain,hourly;
!report variable,*,Zone People Latent Heat Gain,hourly;
report variable,*,System Node Temp,hourly;
report variable,*,System Node MassFlowRate,hourly;
Report,surfaces,detailswithvertices;
Report,construction;
Report,variable dictionary;
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