Openstudio Error with HW Two Pipe Induction Terminal

asked 2017-01-12 15:44:42 -0600

980 ●1 ●8

updated 2017-06-04 10:30:10 -0600

__AmirRoth__

4436 ●5 ●17 http://bleedinggreenna...

HW Two Pipe Induction Terminals are added into my loop, shown in figure below. It is connected to the hot water loop and there is no cooling coil in the terminal. I received following error messages. What does that mean ? And there is no cooling coil in the unit, is this a Openstudio Bug ?

A file that can replicate the error is in this link link text

image description

* Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 6 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 11 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 12 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 23 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 7 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 8 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 13 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 14 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed. * Severe * GetCoilWaterInletNode: Could not find Coil, Type="" Name="" * ~~~ * In AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction = HW TWO PIPE INDUCTION TERMINAL 24 * ~~~ * ..Only Coil:Cooling:Water or Coil:Cooling:Water:DetailedGeometry is allowed.

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Comments

@Kyle Benne Could you please help with this ?

BL ( 2017-01-12 15:50:46 -0600 )edit

Can you provide your file or of a Minimal, Complete and Verifiable Example (ie a very simple model in which you can reproduce the error)?

Julien Marrec ( 2017-01-13 05:31:07 -0600 )edit

@Julien Marrec Yes, I made a very simple file to replicate the error. link text

BL ( 2017-01-13 08:03:04 -0600 )edit

Was this model created using the OS API or did you make it through the OS Application? I'm wondering about the origin of the terminal unit. If it came from drag and drop in the app then it suggests a problem with the App's built in HVAC library.

Kyle Benne ( 2017-01-16 09:38:55 -0600 )edit

Dragging and dropping the object titled 'HW Two Pipe Induction Terminal' (seen here) creates the terminal with the same configuration he used in his test model (AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction with one Coil:Heating:Water) which I don't believe is valid.

Adam Hilton ( 2017-01-16 10:31:38 -0600 )edit

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answered 2017-01-16 08:37:55 -0600

Adam Hilton

3465 ●1 ●15

Partially an OS bug, although in my opinion it's a poorly written EnergyPlus error. Pretty sure you can't use AirTerminal:SingleDuct:ConstantVolume:FourPipeInduction with only one coil. Based on the way the error checking is written it is expecting to see an object there as there isn't a 'blank' case written. The rest of the code for that object is definitely written for both coils being present. The OS bug comes into play because the configuration for the object labeled 'HW Two Pipe Induction Terminal' isn't valid, again, because of the missing CHW coil.

Solution: If you really want a reheat induction terminal I'd just use a configuration with a CHW coil that has the availability set to always off.