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Re: [EnergyPlus_Support] Branch error system VAV+HP





In the BranchList object named "ONLY WATER LOOP MIXED SUPPLY SIDE BRANCHES", there is no branch named "DISTRICT HEATING MIXED BRANCH".

Here's an example:

  PlantLoop,
    Hot Water Loop,          !- Name
    Water,                   !- Fluid Type
    Hot Loop Operation,      !- Plant Equipment Operation Scheme Name
    HW Supply Outlet Node,   !- Loop Temperature Setpoint Node Name
    100,                     !- Maximum Loop Temperature {C}
    10,                      !- Minimum Loop Temperature {C}
    autosize,                !- Maximum Loop Flow Rate {m3/s}
    0.0,                     !- Minimum Loop Flow Rate {m3/s}
    ,                        !- Plant Loop Volume {m3}
    HW Supply Inlet Node,    !- Plant Side Inlet Node Name
    HW Supply Outlet Node,   !- Plant Side Outlet Node Name
**    Heating Supply Side Branches,  !- Plant Side Branch List Name
    Heating Supply Side Connectors,  !- Plant Side Connector List Name
    HW Demand Inlet Node,    !- Demand Side Inlet Node Name
    HW Demand Outlet Node,   !- Demand Side Outlet Node Name
    Heating Demand Side Branches,  !- Demand Side Branch List Name
    Heating Demand Side Connectors,  !- Demand Side Connector List Name
    Sequential;              !- Load Distribution Scheme

  BranchList,
**    Heating Supply Side Branches,  !- Name
    Heating Supply Inlet Branch,  !- Branch 1 Name
    Central Boiler Branch,   !- Branch 2 Name
    Heating Supply Bypass Branch,  !- Branch 3 Name
    Heating Supply Outlet Branch;  !- Branch 4 Name

  Branch,
    Heating Supply Inlet Branch,  !- Name
    0,                       !- Maximum Flow Rate {m3/s}
    ,                        !- Pressure Drop Curve Name
    Pump:VariableSpeed,      !- Component 1 Object Type
    HW Circ Pump,            !- Component 1 Name
    HW Supply Inlet Node,    !- Component 1 Inlet Node Name
    HW Pump Outlet Node,     !- Component 1 Outlet Node Name
    ACTIVE;                  !- Component 1 Branch Control Type

  Branch,
    Central Boiler Branch,   !- Name
    0,                       !- Maximum Flow Rate {m3/s}
    ,                        !- Pressure Drop Curve Name
    Boiler:HotWater,         !- Component 1 Object Type
    Central Boiler,          !- Component 1 Name
    Central Boiler Inlet Node,  !- Component 1 Inlet Node Name
    Central Boiler Outlet Node,  !- Component 1 Outlet Node Name
    ACTIVE;                  !- Component 1 Branch Control Type

  Branch,
    Heating Supply Bypass Branch,  !- Name
    0,                       !- Maximum Flow Rate {m3/s}
    ,                        !- Pressure Drop Curve Name
    Pipe:Adiabatic,          !- Component 1 Object Type
    Heating Supply Side Bypass,  !- Component 1 Name
    Heating Supply Bypass Inlet Node,  !- Component 1 Inlet Node Name
    Heating Supply Bypass Outlet Node,  !- Component 1 Outlet Node Name
    BYPASS;                  !- Component 1 Branch Control Type

  Pipe:Adiabatic,
    Heating Supply Side Bypass,  !- Name
    Heating Supply Bypass Inlet Node,  !- Inlet Node Name
    Heating Supply Bypass Outlet Node;  !- Outlet Node Name

  Branch,
    Heating Supply Outlet Branch,  !- Name
    0,                       !- Maximum Flow Rate {m3/s}
    ,                        !- Pressure Drop Curve Name
    Pipe:Adiabatic,          !- Component 1 Object Type
    Heating Supply Outlet,   !- Component 1 Name
    Heating Supply Exit Pipe Inlet Node,  !- Component 1 Inlet Node Name
    HW Supply Outlet Node,   !- Component 1 Outlet Node Name
    PASSIVE;                 !- Component 1 Branch Control Type

  Pipe:Adiabatic,
    Heating Supply Outlet,   !- Name
    Heating Supply Exit Pipe Inlet Node,  !- Inlet Node Name
    HW Supply Outlet Node;   !- Outlet Node Name

  Connector:Splitter,
    Heating Supply Splitter, !- Name
    Heating Supply Inlet Branch,  !- Inlet Branch Name
    Central Boiler Branch,   !- Outlet Branch 1 Name
    Heating Supply Bypass Branch;  !- Outlet Branch 2 Name

  Connector:Mixer,
    Heating Supply Mixer,    !- Name
    Heating Supply Outlet Branch,  !- Outlet Branch Name
    Central Boiler Branch,   !- Inlet Branch 1 Name
    Heating Supply Bypass Branch;  !- Inlet Branch 2 Name


On 4/12/2011 9:09 PM, cgomez0000@xxxxxxxxx wrote:
 
Hi. Does anyone know where to begin troubleshooting this error?

** Severe  ** GetBranchListInput: Branch Name not found=DISTRICT HEATING MIXED BRANCH in BranchList=ONLY WATER LOOP MIXED SUPPLY SIDE BRANCHES
   ** Severe  ** GetBranchListInput: Branch Name not found=TOWER MIXED BRANCH in BranchList=ONLY WATER LOOP MIXED SUPPLY SIDE BRANCHES
   ** Severe  ** GetBranchListInput: Invalid Input -- preceding condition(s) will likely cause termination.


-- 
Richard A. Raustad
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Florida Solar Energy Center
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