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2019-01-10 14:02:06 -0500 | commented answer | Massive run files Since there are so many output variables, it's easier to turn them "All Off" than turn off dozens of individual output v |
2018-06-15 16:12:10 -0500 | commented answer | openstudio 2.2.0 vs. 1.14.0 airloop These fields are still exposed in OS 2.5. If this is a "bug", does this mean we should leave these fields as the default |
2018-03-19 12:29:57 -0500 | commented question | Error running "Create Baseline Building" Measure in OS 2.3+ I sent it last night, sorry for the delay |
2018-03-08 12:49:00 -0500 | commented question | Error running "Create Baseline Building" Measure in OS 2.3+ Thanks for your help, Andrew. What's your email address? |
2018-03-02 17:27:01 -0500 | asked a question | Error running "Create Baseline Building" Measure in OS 2.3+ Error running "Create Baseline Building" Measure in OS 2.3+ I am having trouble executing the "Create Baseline Building" |
2018-01-31 13:41:38 -0500 | commented question | how can i make the open studio read the idf from WINDOW ??? Where is the "duplicate question"? |
2017-11-09 14:44:39 -0500 | commented answer | Zone Conditions Output in OS not working Hmmm, I have a value there as well, 1F in my case. |
2017-11-09 12:42:12 -0500 | commented answer | Zone Conditions Output in OS not working Thanks for your help. I added a "Cooling Thermostat Schedule" and "Heating Thermostat Schedule" for each thermal zone in |
2017-11-08 13:05:31 -0500 | asked a question | Zone Conditions Output in OS not working Zone Conditions Output in OS not working The Zone Conditions section of OS is not being displayed properly. I receive th |
2017-11-07 16:45:27 -0500 | commented answer | Radiant Ceiling and Floor @Eric Ringold Has this problem been resolved for OS 2.3? I am getting the following error, where Surfaces 415 and 459 ar |
2017-07-25 15:32:30 -0500 | commented answer | How do I add the Predicted Mean Vote Measure report in OS Should the work efficiency schedule be a fractional schedule? And if so, should it be equivalent to the activity level s |
2017-01-06 15:05:04 -0500 | commented answer | How do I model Electrochromic Glazing in EnergyPlus? @macumber or @Julien Marrec Can you provide guidance on how to adjust the Shading Control settings (in particular the Setpoint) using an EnergyPlus measure in OpenStudio? |
2017-01-05 13:44:49 -0500 | commented answer | Does OS run with Sketchup 2017? @David Goldwasser, could you please provide me with a link as well. I will send an email. |
2016-10-14 13:51:20 -0500 | commented answer | OpenStudio 1.12.0 to 1.13.0 conversion issues I have added the 1.12.0 model to the same folder: https://drive.google.com/drive/folder... Is there a way to run OS files in 1.12.0 for now (and forgo automatic upgrades) without uninstalling 1.13.0? |
2016-10-13 11:21:52 -0500 | commented answer | OpenStudio 1.12.0 to 1.13.0 conversion issues I removed the references to older versions of EnergyPlus, but still get the same output. After digging into the output, it seems like some of the overall variation might be driven by differences in sensible heat gain components between the 1.13 and 1.12 versions. In particular, the "Infiltration heat removal" and "Opaque surface conduction and other heat removal" losses are greater in the 1.13 run than the 1.12 version. Here's a summary of total energy use for different runs of the same input file:
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2016-10-13 11:15:40 -0500 | commented answer | OpenStudio 1.12.0 to 1.13.0 conversion issues Thanks, @David Goldwasser. That's interesting. I also seem to get the same values as you for wall areas once I dig into the eplustbl.htm file. It just isn't being reflected in the OpenStudio output within the Zone Overview > Zone Summary section (how can I copy and paste images into this comment?). In this case, maybe the "Gross Wall Area" section of the OpenStudio output is referencing the "Underground Gross Wall Area" of the EnergyPlus output instead of the "Above Ground Gross Wall Area"? In my model, all of the underground wall area fields are zero and above ground wall areas are positive. |
2016-10-12 17:39:52 -0500 | commented question | OpenStudio 1.12.0 to 1.13.0 conversion issues Great thanks. The file can be found here: https://drive.google.com/drive/folder... |
2016-10-12 12:40:14 -0500 | commented question | OpenStudio 1.12.0 to 1.13.0 conversion issues @David Goldwasser, thank you for your help. I didn't find anything evident in the eplusout.err file. I downloaded EnergyPlus 8.6 (previously using 8.5), though I am experiencing the same model behavior (0.0 Gross Wall Area). Do I need to do anything to direct OS 1.13.0 towards EnergyPlus 8.6 instead of 8.5? What is the best way to share a link to the model? Should I just share the *.osm file? |
2016-10-12 10:07:39 -0500 | commented question | OpenStudio 1.12.0 to 1.13.0 conversion issues I updated these from 1.12.0 and experienced the same issue for 3 completely different models. The second model I updated had closer to a 50% increase in energy use! @gokulram , is the breakdown of your energy consumption among different end uses also within 0.1%? Or just the total energy consumption? On of my models ended up with very similar overall results before and after the upgrade, but it turned out to be a coincidental balancing from increased heating and decreased cooling that led to negligible overall energy consumption difference, but significant difference in the actual operation. |
2016-10-11 16:34:49 -0500 | asked a question | OpenStudio 1.12.0 to 1.13.0 conversion issues I am noticing a significant difference in the energy consumption (about 10% change) associated with several models before and after they are upgraded to OS 1.13.0. I have noticed that the heating and cooling loads show significant variation, which may be driving the overall differences. I also noticed that the "Gross Wall Area" values in the updated 1.13.0 model are all equal to "0.0" and am wondering if this might be a clue as to what is going on. Any thoughts on what changes might be driving these differences? Are these differences due to planned changes within the 1.13.0 version of OS or perhaps a bug in the conversion process? Note: no other changes were made other than the automatic upgrade initiated when using the new 1.13.0 OS GUI. |
2016-10-05 11:21:55 -0500 | received badge | ● Supporter (source) |
2016-10-04 12:38:34 -0500 | asked a question | Cooling tower calibration error I am working on a OpenStudio (1.12.0) project which contains a cooling tower that is meant to predominantly operate during winter months. While the specifications of this project describe a 49F design wet-bulb temperature, EnergyPlus requires a minimum "Design Inlet Air Wet-Bulb Temperature" of around 68F. Making this adjustment and an associated change in "Design Approach Temperature" to 3.24R (per the manufacturer's specification), yields the following error. * Severe * Bad starting values for cooling tower water flow rate ratio calibration. * ~~~ * Design inlet air wet-bulb or range temperature must be modified to achieve the design approach * ~~~ * A water flow rate ratio of 0.500000 was calculated to yield an approach temperature of 1.91. * Fatal * Cooling tower calibration failed for tower VAR SPD COOLING TOWER 1. Reducing the "Design Range Temperature to around 8R" helps avoid the error but conflicts with the true specifications. I am looking for help and suggestions for better understanding this error message and how to remedy the situation. |
2016-10-04 12:02:17 -0500 | commented answer | Plant equipment control in Openstudio 1.9 Has the feature discussed above (operation scheme control) been added to the most recent version of OpenStudio (1.12.0)? If so, I can't seem to find it. I'm looking to schedule a facility that has a hard, seasonal switch from a cooling tower to central chilled water and back once a year. |
2016-10-04 12:00:49 -0500 | commented answer | How to set control strategies for plant loops? Has the feature discussed above (operation scheme control) been added to the most recent version of OpenStudio (1.12.0)? If so, I can't seem to find it. I'm looking to schedule a facility that has a hard, seasonal switch from a cooling tower to central chilled water and back once a year. |
2015-08-25 11:14:03 -0500 | received badge | ● Commentator |
2015-08-25 11:14:03 -0500 | commented answer | How do you model a heating only radiant system? @Waseem, thanks again for your help. Unfortunately when I drag the "Always Off Schedule" to the "Cooling Thermostat Schedule" box, the schedule is not properly assigned. Basically I drag the schedule to the appropriate box but it just disappears. Thanks |
2015-08-20 18:08:01 -0500 | commented answer | How do you model a heating only radiant system? @Waseem, thank you very much for this helpful and thorough answer. I apologize for not mentioning earlier that I am in fact using OpenStudio. How might this translate to the OS interface? Thanks |
2015-08-18 16:26:46 -0500 | commented question | How do you model a heating only radiant system? Yes, @Waseem. Sorry for not being more specific. |
2015-08-18 15:50:36 -0500 | asked a question | How do you model a heating only radiant system? Is there any way to model a radiant system for heating only. The cooling control temperature schedule seems to be a required input. This question suggested creating an "Always Off" schedule, but I'm not quite sure how to do this, and where this schedule should be set. |
2015-08-18 14:50:46 -0500 | commented answer | who has an example osm file consisting a low temperature radiant heating system in openstudio? How do you create an "Always Off" schedule and where do you assign this? Do you assign this schedule under the "Cooling Control Temperature Schedule Name" in order to model a heating only system? Thanks |
2015-07-28 15:15:53 -0500 | commented question | Trouble setting baseline model in PAT Windows 8.1 Thanks |
2015-07-28 14:48:45 -0500 | commented question | Trouble setting baseline model in PAT Kyle, For some reason (and maybe this is an entirely different issue), when I try to save a 1.7.0 file as you suggested, it doesn't save over the old file. Even if I "Save as" a new filename altogether, the file remains 1.7.0. As a double check, when I check the file properties after saving, the "Date modified" doesn't change at all, leaving me to believe the changes are not actually getting saved. Additionally, after I save, close OS and open the file again, I receive the message that the file is updated to 1.8.0 all over again. |
2015-07-28 14:07:28 -0500 | commented question | Trouble setting baseline model in PAT Kyle and macumber, Thank you for your help. Unfortunately neither of those issues seem to help. So far, the only luck I've had is running .osm files that have been converted to OS 1.8.0 successfully. All the .osm files that remain OS 1.7.0 seem to have this issue. As such, is there a way to upgrade the old 1.7.0 files to 1.8.0? |
2015-07-27 15:25:55 -0500 | commented question | Trouble setting baseline model in PAT Thanks David, Unfortunately, that doesn't seem to help. Best, Ethan |
2015-07-27 15:03:31 -0500 | commented question | Trouble setting baseline model in PAT I have tried to update the OS 1.7.0 models to OS 1.8.0 by opening OS, allowing the update to occur and saving the file, but the saved file remains OS 1.7.0. |
2015-07-27 15:02:06 -0500 | commented question | Trouble setting baseline model in PAT Thank you David,
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2015-07-27 14:09:22 -0500 | received badge | ● Student (source) |
2015-07-27 14:06:01 -0500 | asked a question | Trouble setting baseline model in PAT When attempting to select my baseline model in the Parametric Analysis Tool (PAT), I receive the following error: Unhandled Exception An unhandled exception has occurred. boost::filesystem::copy_file: Acess is denied: "C:/Users...\test.osm", "C:/Users...\PATtest\seed\test.osm" When I check the "seed" folder, however, I do see that the "test.osm" file has been copied over. Any suggestions would be greatly appreciated. |