RE: [EnergyPlus_Support] CMD window errors

Thank you Jason.

Christopher R Jones, P.Eng.

T+ 1 416-644-0252

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Friday, November 30, 2018 3:02 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] CMD window errors

The errors you are seeing are generated from a post processor called HVAC-Diagram and are not errors from EnergyPlus itself. You can try using "pausing" (View..Options..Command Window, click "Pause During Simulation") if you want to see them. If you look at the SVG file that HVAC-Diagram creates, and care about it, and it is not drawn correctly, these errors may be important but if all you are trying to do is run EnergyPlus, they can be ignored.

Jason

On 11/30/2018 11:13 AM, Javed Iqbal eee.javed@xxxxxxxxx [EnergyPlus_Support] wrote:

Hi,

You should check .bnd file which shows details on branches, nodes and flow connections. It seems there are some node connection problem in some specific zones as highlighted in the error..

Hope this helps!!

On Fri, Nov 30, 2018 at 10:05 PM 'Jones, Christopher' christopher.r.jones@xxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:

I am running a model using EPLaunch. During the simulation, EnergyPlus throws errors in the cmd window. These errors are not included in the .err file. Is there a way to capture these errors to file?

For example:

Christopher R Jones, P.Eng.

T+ 1 416-644-0252

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
Sent: Monday, November 12, 2018 10:05 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Discussion on EMS use in Energyplus on Opening factor Control

your ems directly sets the component. perhaps you want to set the component as fully open in the idf and then manipulate the component's schedule instead with ems? from memory there are a couple of variables which are multiplied with each other to deturmine how open the window is.

On Thu, 8 Nov 2018, 22:10 shahaohan@xxxxxxx [EnergyPlus_Support] <EnergyPlus_Support@xxxxxxxxxxxxxxx wrote:

When I'm checking the simulation example in the energyplus, I found a EMS problem relating to the opening factor Control. In theEMSAirflowNetworkOpeningControlByHumidity.idf, the example file shows a EMS control to the surface:Zn001:Wall001:Win001 by humidity. At the same time, the example file set a venting availability schedule in the Zone Level to control the Opening time. The Venting schedule is below:

Schedule:Compact, VentingSched, !- Name Fraction, !- Schedule Type Limits Name Through: 12/31, !- Field 1 For: AllDays, !- Field 2 Until: 7:00,1.0, !- Field 3 Until: 17:00,0.0, !- Field 5 Until: 24:00,1.0; !- Field 7

The EMS control code is below:

EnergyManagementSystem:Sensor, ZoneRH, !- Name Zone 1 Node, !- Output:Variable or Output:Meter Index Key Name System Node Relative Humidity; !- Output:Variable or Output:Meter Name

EnergyManagementSystem:Actuator, MyOpenFactor, !- Name Zn001:Wall001:Win001, !- Actuated Component Unique Name AirFlow Network Window/Door Opening, !- Actuated Component Type Venting Opening Factor; !- Actuated Component Control Type

EnergyManagementSystem:ProgramCallingManager, RH Controlled Open Factor, !- Name BeginTimestepBeforePredictor, !- EnergyPlus Model Calling Point RH_OpeningController; !- Program Name 1

EnergyManagementSystem:Program, RH_OpeningController, !- Name IF ZoneRH < 25, !- Program Line 1 SET MyOpenFactor = 0.0, !- Program Line 2 ELSEIF ZoneRH > 60, !- SET MyOpenFactor = 1.0, !- ELSE, !- SET MyOpenFactor = (ZoneRH - 25) / (60 - 25), !- ENDIF; !-

Then, when I checking the results, I found that the Venting availability Schedule is ignored by applying the EMS, which means users cannot control the opening factors based on time! Did anyone discover this irrational problem? Is this a Bug or error? How can user control the openings with EMS and time?

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Javed Iqbal, LEED AP, CEA

Sr. Energy Analyst

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Jason Glazer, P.E., BEMP, GARD Analytics, 90.1 ECB chair, 209 chair

Admin for onebuilding.org building performance mailing lists

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Posted by: "Jones, Christopher" <Christopher.r.Jones@xxxxxxx>

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