Re: [EnergyPlus_Support] **Severe"" Node Connection Error

Vaibhav Jain

www.vaibhavjain.co

On 17 September 2012 22:06, uebermenchens <uebermenchens@xxxxxxxxx> wrote:

Hello All,

I am back in the saddle again running some energy plus models and I am getting a few warnings and a severe error. Could you please provide some incite for solving the node connection error. I hope resolving this problem will solve the other warnings.

Thanks,

MT

Program Version,EnergyPlus 6.0.0.023, 9/17/2012 4:03 PM,IDD_Version 6.0.0.023
************* Beginning Zone Sizing Calculations
************* Beginning System Sizing Calculations
** Warning ** In calculating the design coil UA for Coil:Cooling:Water ZONE 1 -- OFFICES COOLING COIL
** ~~~ ** no apparatus dew-point can be found for the initial entering and leaving conditions;
** ~~~ ** the coil outlet design conditions will be changed to correct the problem.
** ~~~ ** The initial design conditions are: Tair,in = 26.3812
** ~~~ ** Wair,in = 1.210141E-002
** ~~~ ** Twater,in = 7.2200
** ~~~ ** Tair,out = 14.0000
** ~~~ ** Wair,out = 8.000000E-003
** ~~~ ** The revised design conditions are: Tair,out = 12.7020
** ~~~ ** Wair,out = 8.524276E-003
************* Testing Individual Branch Integrity
** Warning ** There are orphaned Branches in input
************* 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
** Severe ** Node Connection Error, Node="PLANTTOWER CNDW INLET", Inlet node did not find an appropriate matching "outlet" node.
** ~~~ ** If this is an outdoor air inlet node, it must be listed in an OutdoorAir:Node or OutdoorAir:NodeList object.
** ~~~ ** Reference Object=BRANCH, Name=PLANTTOWER CNDW BRANCH
** Warning ** Potential Node Connection Error for object COOLINGTOWER:SINGLESPEED, name=PLANTTOWER
** ~~~ ** Node Types are still UNDEFINED -- See Branch/Node Details file for further information
** ~~~ ** Inlet Node : PLANTTOWER CNDW INLET
** ~~~ ** Outlet Node: PLANTTOWER CNDW OUTLET
************* There were 2 node connection errors noted.
************* Beginning Simulation
************* There are 1 unused objects in input.
************* Use Output:Diagnostics,DisplayUnusedObjects; to see them.
************* There are 4 unused schedules in input.
************* Use Output:Diagnostics,DisplayUnusedSchedules; to see them.
*************
************* ===== Final Error Summary =====
************* The following error categories occurred. Consider correcting or noting.
************* Node Connection Errors
************* ..Node connection errors are often caused by spelling mistakes in a node name field.
************* ..To track down the problem, search the idf file for each node name listed to see if it
************* ..occurs in the expected input fields.
*************
************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning; 0 Severe Errors.
************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning; 0 Severe Errors.
************* EnergyPlus Completed Successfully-- 3 Warning; 1 Severe Errors; Elapsed Time=00hr 01min 2.07sec