Nithya's profile - activity

@MJWitte - Files submitted to energy plus support- https://energyplushelp.freshdesk.com/support/tickets/16322

@MJWitte- Files submitted to energy plus support- https://energyplushelp.freshdesk.com/support/tickets/16322

@MJWitte- Files submitted to energy plus support deck- https://energyplushelp.freshdesk.com/support/tickets/16322

Unitary system (Water- Air) CC control issues Hello fellow modelers! Happy new year! Background- In an attempt to mod

Fellow energy modelers, Where can I find space type blending that was used in the PNNL prototypes? Nithya

Space type configuration in PNNL prototypes Fellow energy modelers, Where can I find space type blending that was used i

Any update on this effort?

@mdahlhausen, has there been a measure update for creating the prototypes using the newer version of Open Studio?

I have similar issue. Were you able to resolve this?

Open studio generates a folder with the same name as your osm file. In that folder, open sub folder called 'Run'. In the

Khaddad, I need to use a chiller(~air to water heat pump) for this scenario. I am using manufacturer data to create perf

Khaddad, I need to use a chiller(~air to water heat pump) for this scenario. This is a research based project and I am u

Using chiller to temper WSHP loop Can anyone share how to use chiller that supplies 44F to temper WSHP loop to operate a

Is it possible to run the GLHEPro setup with energy plus file?

What is the information that GLHE pro needs? I do not have a purchased version yet as I am still figuring out if it is u

Is it possible to extract the same type of data from energy plus file that you would need to run the GLHE pro?

GLHE with Energy plus file Is it possible to run the GLHEPro setup with energy plus file?

Main plant is set to 55F with Plant sizing component set to 55F -delta 10F. For each component: -The GSHP is set to mai

Also, Open Studio team---- by default Open Studio puts in a 'Site:GroundTemperature:BuildingSurface' as the reference Gr

What is wrong with this vertical ground source loop configuration! I have a plant setup with vertical ground source and

Has this measure been updated to keep the zone assignment?

In a case where there is Kitchen exhaust, if you modeled the exhaust fan as zone equipment, would you assign fraction lo

Open studio zone report I have used the zone report for my model and wondering if I am understanding the result accurate

Julien, Thank you for the help with this. I do have a couple of comments on your answers 2- I did this already but i st

You can find these here- https://comnet.org/appendix-c-schedules a column to the right of the schedules shows which buil

open studio pat v2 I am running into a couple of issues with the new PAT and looking for a solution. Currently using a v

I am using v1.14 and trying to model a Fan coil unit with fan operating on a schedule- unfortunately, the osm file does done have supply air fan operating mode field that makes it relevant to operate the unit at that schedule and cycle it per demand at other hours. It is only operating as either run as constant(24X7) or cycling it on demand(OA cycles as well!!!!). How can I get this to work? The following text is from energy plus i had edited to make it work. I prefer to stay in the open studio platform inorder to run parametrics using PAT. Please help!!!!

ZoneHVAC:FourPipeFanCoil,
  Zone HVAC Four Pipe Fan Coil 64, !- Name
  Res Common area(OA), !- Availability Schedule Name
  ConstantFanVariableFlow, !- Capacity Control Method
  Autosize, !- Maximum Supply Air Flow Rate {m3/s}
  1, !- Low Speed Supply Air Flow Ratio
  1, !- Medium Speed Supply Air Flow Ratio
  Autosize, !- Maximum Outdoor Air Flow Rate {m3/s}
  Res Common area(OA), !- Outdoor Air Schedule Name
  Node 571, !- Air Inlet Node Name
  Node 572, !- Air Outlet Node Name
  OutdoorAir:Mixer, !- Outdoor Air Mixer Object Type
  Zone HVAC Four Pipe Fan Coil 64 OA Mixer, !- Outdoor Air Mixer Name
  Fan:OnOff, !- Supply Air Fan Object Type
  Fan On Off 64, !- Supply Air Fan Name
  Coil:Cooling:Water, !- Cooling Coil Object Type
  Coil Cooling Water 64, !- Cooling Coil Name
  Autosize, !- Maximum Cold Water Flow Rate {m3/s}
  , !- Minimum Cold Water Flow Rate {m3/s}
  , !- Cooling Convergence Tolerance
  Coil:Heating:Water, !- Heating Coil Object Type
  Coil Heating Water 64, !- Heating Coil Name
  Autosize, !- Maximum Hot Water Flow Rate {m3/s}
  , !- Minimum Hot Water Flow Rate {m3/s}
  , !- Heating Convergence Tolerance
  , !- Availability Manager List Name
  , !- Design Specification ZoneHVAC Sizing Object Name
  Res Common area(OA); !- Supply Air Fan Operating Mode Schedule Name

Adding field to Fan coil unit inputs I am using v1.14 and trying to model a Fan coil unit with fan operating on a schedu

Has anyone come across this issue where the total load from coil:heating:water does not add up to nominal capacity of both the Boilers? infact the load is exactly twice!
Attaching relevant images from html output!

Boiler nominal capacity Has anyone come across this issue where the total load from coil:heating:water does not add up t

@David, thank you! I tried the merge spaces by deleting the spaces and merging those spaces. The only setback is the the space to zone linkage is gone. Given my scenarios, this worked out to be the least time consuming solution. I needed to keep everything associated with zone the same- baseline systems configuration was already in place.

Create Baseline model is a great resource, but I cannot use it because I need to evaluate a measure by measure analysis(Lighting, Ext wall, Roof etc). It would be great if the measure had components split up- like apply lighting only or HVAC only et

Hi All, I have created a baseline model and proposed model in open studio. As usual, I have had to change geometry in the tool and am trying to match get the changes done in the baseline model too. Since, I have used the same parent file- same space names, thermal zone names, i hoped that copying the changes would be easy enough. I tried using import envelope and idf measure, but the zone equipment seems to have lost its association and crashes when the thermal zone or plant loop tabs are selected. Is there an alternate merge solution to this?

You should be able to find most of your questions answered in this documentation-http://bigladdersoftware.com/epx/docs/8-6/input-output-reference/. Open studio v1.14 uses Energy plus version 8.6 and uses same terminology as well.

I am looking to add an energy plus object 'ElectricLoadCenter:Transformer'

@Phylroy Lopez - has there been an update to this measure?

Has there been an update to this? I see this when I try to apply-

Failed to Show Arguments

Reason(s):

Failed to compute arguments for measure: cannot load such file -- C:/Users/nlavu/OpenStudio/Measures/btap_equest_converter/../../../../lib/btap/lib/btap.rb

Has there been an update to this? I see this when I try to apply-

Failed to Show Arguments

Reason(s):

Failed to compute arguments for measure: cannot load such file -- C:/Users/nlavu/OpenStudio/Measures/btap_equest_converter/../../../../lib/btap/lib/btap.rb

Thank you Annie. Just to confirm- I believe in this approach you don't need the component override nodes since the control is CoolingSetpointOnOff. These inputs are only triggered when CoolingSetpointOnOffWithComponentOverride gets choosen. I do not have a chiller node on the condenser side(Air cooled chiller). So, the control type is restricted to CoolingSetpointOnOff. This strategy works fine in january but does not trigger even when the loop input to oat is ~25 F delta in december. This makes me think that this is not working as expected! In summation, works only10% of the potential hours!