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[EnergyPlus_Support] Warning : Potention node connection error
Dear all,
I tried to simulate an HVAC system composed by:
- An air primary loop: Air Loop inlet node, Furnace (supply fan +
Gas:HeatingCoil), Air Loop Outlet Node
- A zone equipment loop : Zone Equipment Inlet Node, a zone splitter,
1 branch with a direct air system, a Coil:WaterCooling, which is
connected to a zone entrance, a zone mixer, and the Return Air mixer
outlet node.
- A chilled water loop composed by:
The supply side : CW Pump branch, Splitter, 2 branches (Purchased
Cooling Branch, Cooling Supply Bypass), Mixer, Cooling Supply Side
Outlet
The demand side : Cooling Demand Inlet, Splitter, 2 branches (
Cooling Coil Zone 1 Branch, Cooling Demand Bypass Branch), Mixer,
Cooling Demand Outlet
Everytime I try to simulate these equipments, some errors appear :
I checked that 'Zone 1 Inlet Node' is connected with the zone
splitter (splitter outlet node), with the direct air (zone supply air
node name) and with the cooling coil (air inlet node). I tried to
reverse connections order (first cooling coil, then direct air), but
same errors occur. I hope that somebody will be able to explain to me
the wrong connection I am doing. There are also connection mistakes
in the water loop (all of the same type), would anybody have an idea
about it?
Thank you in advance for your help!
Marie Odeline
Program Version,EnergyPlus 1.2.1.022, 2005-06-15 14:12,IDD_Version
1.2.1.022
** Severe ** Deprecated field -- Calculate Solar Reflections is
now embodied in the Solar Distribution Field.
** ~~~ ** Please note that this field will be deleted in
future versions.
** Severe ** Node ZONE 1 INLET NODE connects to no component
** ~~~ ** Occurs in Supply Air Path=FURNACESUPPLYPATH
** Severe ** An outlet node in Air Primary Loop AIR PRIMARY LOOP
is not connected to any zone
** ~~~ ** Could not match ZoneEquipGroup Inlet Node="ZONE
EQUIPMENT INLET NODE" to any Supply Air Path or controlled zone
** Fatal ** Preceding errors cause termination
************* Fatal error -- final processing. More error
messages may appear.
************* 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
** Warning ** Node Connection errors shown during "fatal error"
processing may be false because not all inputs may have been
retrieved.
** Warning ** Potential Node Connection Error for object
FURNACE:BLOWTHRU:HEATONLY, name=GAS FURNACE 1
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : AIR LOOP INLET NODE
** ~~~ ** Outlet Node: AIR LOOP OUTLET NODE
** Warning ** Potential Node Connection Error for object PIPE,
name=COOLING DEMAND SIDE INLET PIPE
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : CW DEMAND INLET NODE
** ~~~ ** Outlet Node: CW DEMAND ENTRANCE PIPE OUTLET NODE
** Warning ** Potential Node Connection Error for object PIPE,
name=COOLING DEMAND SIDE BYPASS
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : CW DEMAND BYPASS INLET NODE
** ~~~ ** Outlet Node: CW DEMAND BYPASS OUTLET NODE
** Warning ** Potential Node Connection Error for object PIPE,
name=CW DEMAND SIDE OUTLET PIPE
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : CW DEMAND EXIT PIPE INLET NODE
** ~~~ ** Outlet Node: CW DEMAND OUTLET NODE
** Warning ** Potential Node Connection Error for object PIPE,
name=SUPPLY SIDE OUTLET PIPE
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : SUPPLY SIDE EXIT PIPE INLET NODE
** ~~~ ** Outlet Node: CW SUPPLY OUTLET NODE
** Warning ** Potential Node Connection Error for object
PUMP:VARIABLE SPEED, name=CW CIRC PUMP
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : CW SUPPLY INLET NODE
** ~~~ ** Outlet Node: CW PUMP OUTLET NODE
** Warning ** Potential Node Connection Error for object
PURCHASED:CHILLED WATER, name=PURCHASED COOLING
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : PURCHASED COOLING INLET NODE
** ~~~ ** Outlet Node: PURCHASED COOLING OUTLET NODE
** Warning ** Potential Node Connection Error for object PIPE,
name=SUPPLY SIDE BYPASS
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : CW SUPPLY BYPASS INLET NODE
** ~~~ ** Outlet Node: CW SUPPLY BYPASS OUTLET NODE
** Warning ** Potential Node Connection Error for object
COIL:WATER:COOLING, name=COOLING COIL ZONE 1
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node
Details file for further information
** ~~~ ** Inlet Node : COOLING COIL ZONE 1 WATER INLET NODE
** ~~~ ** Outlet Node: COOLING COIL ZONE 1 WATER OUTLET NODE
************* There were 9 node connection errors noted.
*************
************* ===== Final Error Summary =====
************* The following error categories occurred. Consider
correcting or noting.
************* Node Connection Errors
************* Deprecated Features
*************
************* EnergyPlus Terminated--Fatal Error Detected. 10
Warning; 3 Severe Errors
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