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2021-10-06 22:23:36 -0500 marked best answer How to change the Control Scheme Schedule on a PlantEquipmentOperationScheme ?

Using Openstudio (2.1.0) how can I change 'Always On Discrete' to a schedule of my choice?

I am confused because calling model.getPlantEquipmentOperationSchemes() returns a list of OS:PlantEquipmentOperation:CoolingLoad objects.

$model.getPlantEquipmentOperationSchemes()
 [OS:PlantEquipmentOperation:CoolingLoad,
  {0f6d331e-560f-4bf3-b6b1-876bd6eae5d4}, !- Handle
  North Building Cooling Tower Staging,   !- Name
  0,                                      !- Load Range Lower Limit 1 {W}
  934,                                    !- Load Range Upper Limit 1 {W}
  {0e4d7a85-4f39-4ceb-9e39-e03915c08726}, !- Range Equipment List Name 1
  934,                                    !- Load Range Lower Limit 2 {W}
  1401,                                   !- Load Range Upper Limit 2 {W}
  {307111b7-eddd-4d1f-87df-9a6865a3457a}, !- Range Equipment List Name 2
  1401,                                   !- Load Range Lower Limit 3 {W}
  4762,                                   !- Load Range Upper Limit 3 {W}
  {6b0a97b3-6a33-4685-976e-60e4cb773ebb}, !- Range Equipment List Name 3
  4762,                                   !- Load Range Lower Limit 4 {W}
  1000000000,                             !- Load Range Upper Limit 4 {W}
  {ca22b596-b1e2-4f60-b5b8-8b527101b7a0}; !- Range Equipment List Name 4 ]

I am expecting that call to return the object like this from the idf

   PlantEquipmentOperationSchemes,
          North Chilled Water Loop Operation Schemes, !- Name
          PlantEquipmentOperation:CoolingLoad,    !- Control Scheme Object Type 1
          Plant Equipment Operation Cooling Load 7, !- Control Scheme Name 1
          Always On Discrete;                     !- Control Scheme Schedule Name 1

I'm trying to set the Control Scheme Schedule to control the operation of the chillers and pumps on the chilled water loop.

2020-05-07 17:35:56 -0500 commented answer AirLoopHVAC:DedicatedOutdoorAirSystem example?

Thanks @rraustad

2020-05-06 23:57:38 -0500 asked a question AirLoopHVAC:DedicatedOutdoorAirSystem example?

AirLoopHVAC:DedicatedOutdoorAirSystem example? Can anyone provide a simple idf example file showing how to implement the

2020-04-23 21:33:32 -0500 commented question Adding multiple chillers in Design-Builder/Energyplus?

Did you change the sizing fraction?

2020-04-23 21:33:10 -0500 answered a question Adding multiple chillers in Design-Builder/Energyplus?

did you change the sizing fraction on the first and all other chillers?

2020-04-21 21:53:00 -0500 commented question Pump mass flow rate and Chiller supervisory actuators didn't work

Have you got a bypass loop in the system ? The water has to go somewhere. Also try different EMS program calling points

2020-04-20 16:24:15 -0500 commented question How to create water-cooled VRF in OpenStudio 2.9.1 ?

best solution I have seen is that suggested by Bo Lin here link text

2020-04-15 18:06:47 -0500 edited question How to create water-cooled VRF in OpenStudio 2.9.1 ?

How to create water-cooled VRF in OpenStudio 2.9.1 ? The release notes for Openstudio 2.9.0, and linked discussions on g

2020-04-15 18:06:17 -0500 asked a question How to create water-cooled VRF in OpenStudio 2.9.1 ?

How to create water-cooled VRF in OpenStudio 2.9.1 ? The release notes for Openstudio 2.9.0, and linked discussions on g

2020-04-05 17:12:09 -0500 edited answer is there a example file for risk condensation analysis in energy plus?

Im going to stick my head out here and say that EnergyPlus can't do this 'out of the box'. I'm sure you could find a way

2020-01-02 18:45:34 -0500 commented answer How to create an openstudio python bindings docker file?

thanks saeranv!

2020-01-02 17:39:05 -0500 commented answer How to create an openstudio python bindings docker file?

Thanks ! Can you explain, step by step, what the install and setup instructions are for this? I have tried the install i

2019-12-30 16:57:25 -0500 asked a question How to create an openstudio python bindings docker file?

How to create an openstudio python bindings docker file? My goal is to create a docker file (apologies if this is the in

2019-08-11 03:06:57 -0500 answered a question Modeling TFA with Heat Recovery Unit supplying to Floor level AHU | Design Builder

You may consider using an EnergyManagementScript to 'model' the system by way of actuating the air conditions onto the F

2019-07-25 07:01:18 -0500 commented answer How to sub-meter two buildings with same central plant?

p.s Australia is good at metering. ozzie ozzie ozzie oi oi oi

2019-07-25 07:00:35 -0500 answered a question How to sub-meter two buildings with same central plant?

you can use the End Use Subcategory on lights and equipment to easily create additional meter outputs in the energy plus

2019-05-18 16:03:30 -0500 commented answer three-way valve or bypass valve in chilled water loop

Hi Matt - my experience is that with multiple chillers each with a branch pump, the approach shown by Julien will not wo

2019-02-05 04:47:25 -0500 commented answer VRF & DOAS - complete model?

@mdahlhausen what is this performance map object you speak of?

2018-10-27 22:45:49 -0500 asked a question Is it possible to use relative references in .osw?

Is it possible to use relative references in .osw? Is it possible to use relative references in an openstudio workflow f

2018-10-20 05:00:34 -0500 commented question How to Print out Construction Sets and Schedules

have you tried the OpenStudio Results Measure? If not, are you using OpenStudio or other?

2018-10-18 06:01:23 -0500 answered a question Representing Distribution Losses

I don't think measured data will support any one approach in particular. They are all fudges to cover unknowns. It would

2018-10-09 05:14:39 -0500 commented question OS: VRFwithDOAS failed

can you add more details about your OpenStudio model. How many spaces are there? How many thermal zones? What thermostat

2018-09-25 21:35:30 -0500 commented question sketchup plugin space from diagram not work correctly

sounds like issues flow from misunderstanding scale of plans. try measuring a length of a door, see if the number passes

2018-09-25 17:21:29 -0500 answered a question Cooling Coil has leaving humidity ratio > entering humidity ratio

I have seen this warning, and the following info may help you understand the issue. Obviously, a chilled water coolin

2018-09-21 16:59:44 -0500 answered a question OpenStudio Sketchup Inspector, new-copy-delete buttons grayed?

As the error message says, the surface was not drawn. Because it was not drawn, it can't be deleted with Sketchup or Ope

2018-09-10 00:53:07 -0500 asked a question How to set spacetype.people by measure?

How to set spacetype.people by measure? I'd like to understand how I can add modify the People loads in a Space Type, us

2018-09-02 04:44:37 -0500 asked a question How to add Fan zone exhaust by measure?

How to add Fan zone exhaust by measure? zone = model.getThermalZoneByName("test zone").get fan = OpenStudio::Model:FanZo

2018-07-13 04:01:38 -0500 commented question Database of Chiller Curves

I know of no such database. Chiller suppliers are generally helpful, before Tender stage. I have found creating chiller

2018-07-09 21:24:43 -0500 commented answer How to set VAV mass flow rates by EMS?

no, it didn't work. The SetpointManager dominates the terminal minimum turndowns.

2018-07-06 02:23:56 -0500 commented answer How to set VAV mass flow rates by EMS?

ill check this out thanks

2018-06-29 00:02:46 -0500 edited question How to set VAV mass flow rates by EMS?

How to set VAV mass flow rates by EMS? Any guidance on how can I use an EMS program to override behaviour of a setpoint

2018-06-23 23:38:57 -0500 edited question How to set VAV mass flow rates by EMS?

How to set VAV mass flow rates by EMS? Any guidance on how can I use an EMS program to override behaviour of a setpoint

2018-06-23 23:37:06 -0500 asked a question How to set VAV mass flow rates by EMS?

How to set VAV mass flow rates by EMS? Any guidance on how can I use an EMS program to override behaviour of a setpoint

2018-06-14 01:40:55 -0500 commented question Has the sketchup plugin slowed down?

Good to hear that is not a known issue. I hope to find a fix on my machine.

2018-06-14 01:00:59 -0500 edited question Has the sketchup plugin slowed down?

Has the sketchup plugin slowed down? Using Sketchup 2017 OpenStudio 2.5 Windows 10 Outliner window not open If i make a

2018-06-13 19:52:56 -0500 asked a question Has the sketchup plugin slowed down?

Has the sketchup plugin slowed down? Using Sketchup 2017 OpenStudio 2.5 If i make any changes with the Inspector - such

2018-05-21 23:26:20 -0500 answered a question Chiller on SetpointManager:FollowSystemNodeTemperature reports error with no cooling load

EnergyPlus has reported a warning, not an error. The warning may not caused directly by your control strategy. The warn

2018-05-09 01:44:35 -0500 answered a question Unmet heating and cooling hours question

Check the occupancy schedule versus HVAC schedule

2018-04-23 21:41:38 -0500 commented answer How to connect a ChillerAbsorption to a hot water loop?

The way I imagine using this is to supply hot water to the ChillerAbsorptionIndirect from a hot water loop - so I can do

2018-04-22 01:25:53 -0500 asked a question How to connect a ChillerAbsorption to a hot water loop?

How to connect a ChillerAbsorption to a hot water loop? How can I connect the Chiller:Absorption to a hot water loop? Th

2018-04-12 15:59:47 -0500 asked a question Can energyplus model Airflow network with VAV supply fan?

Can energyplus model Airflow network with VAV supply fan? The EnergyPlus documentation seems to say that an Airflow Netw

2018-04-05 21:16:26 -0500 answered a question Unbalanced Airflow

NB;This is not a complete answer (yet), but the image below will help. If you want to hardsize the zone airflows, chan

2018-04-05 16:03:56 -0500 commented question Unbalanced Airflow

Mixing hardsize and autosize across zone/system/plant is always a bad idea. In this case you have autosized the zone's a

2018-04-03 17:22:04 -0500 commented question VRF & DOAS Design & Operation

That sounds right. I didn't do anything fancy here, I just copied the values in the curve objects (manually) from e+ exa

2018-04-03 05:24:47 -0500 commented question Why is this Energy Plus VAV system operating at maximum airflow when all connected zones require heating?

The symptoms are consistent with the description of the SetpointManager:Warmest control strategy - it will set max airfl

2018-03-29 15:48:18 -0500 commented question VRF & DOAS Design & Operation

compare the VRF curves in your model to the energyplus example/default curves. I have found openstudio curves to result

2018-03-26 21:48:51 -0500 answered a question The old Python v Ruby Question

I asked myself this question and decided to go Ruby. I reckon that you'll make life harder for yourself in the long run

2018-03-15 06:08:33 -0500 commented answer chillers in series

I've read this a few times and throught about and I don't agree that two chillers in series requires 120 kg/s. surely it

2018-03-07 22:23:50 -0500 commented question Logic to select how many fan should operate in CoolingTower:TwoSpeed

this is a near duplicate to your recent question, https://unmethours.com/question/30047/any-way-to-operate-condenser-loo