Gurneet's profile - activity

Hi Katsuya, You can check the following image for inheritance model. I hope it helps. https://nrel.github.io/OpenStudi

Hi Katsuya, You can check the following image for inheritance model. I hope it helps. https://nrel.github.io/OpenStudi

Hi Greg,

The error is due to the azimuth angle given in the openstudio. If you keep it 0 CBECC will be able to import the same without EXtWall error. You can always give the azimuth angle in CBECC tool itself.

Regards

Hi,

This is in reference to the zone conditions table in openstudio report which represent hours and humidity spent in temperature and humidity range. Just wanted to understand why it shows hours in higher temperature range (78-83) /Humidity >80 when the setpoint is 74 and desired humidity is < 60%. Which parameter or control I have to use to ensure that there is no hours above 76 degrees and >60% humidity.

Hi, Thanks for your input, I tried running the zone_report measure with the model and it is also showing similar results i.e. model without shading has lower window gain. IS this something to do with reflection form shading devices? I will also try to break the zone to smaller zone.

Hi,

I have modeled two identical buildings, one with shading and other without shading. The screenshots of the same are attached for your reference. I am getting lower zone window heat gain peak load in building without shading. The time of peak is on 21st may at 15:00 hours. 1)Max Zone window heat gain without shading: 4497 W 2)Max Zone window heat gain with shading: 4963 W

The shading has been designed to block the sun for maximum time of the year and I hoping to see a considerable reduction in window heat gain due to extensive shading. However, the heat gain has increased after shading. I would appreciate if someone can explain this behaviour.

Hi,

I am trying to establish the Building Envelope Peak Heat Gain Factor in W/m2 for the building or zone i.e. heat gain through conduction from roof, walls, glass, and solar heat gain from glass for the peak time of the year in which maximum cooling will be required. So I have generated the hourly report with the following variables

1)Walls, Roofs, Ceilings (int), Floors, (int), Floors (ext), Ground floors, Partitions (int), Doors and vents gain variable - "Opaque Surface Inside Face Conduction"
2)Solar Gains Exterior Windows: "Zone Transmitted Solar" 3)Glazing heat gain : "Window Heat Gain [W] – Window Heat Loss"

and then adding 1+2+3 to arrive at total envelope load. Is this the correct approach? or I just need to add 1+3 ?

Regards

I am modeling parking exhaust by using the zone exhaust object in openstudio. It is working fine however, it is considering the parking area as conditioned, though I have not specified any thermostat schedule for the same. Is there a way by which we can exclude the parking area from total conditioned area number .

hi, I was able to see the model few months back, but now it never loads. When i loaded the model with java console I got the following error.

OrbitControls.js:249 Uncaught TypeError: THREE.Spherical is not a constructor THREE.OrbitControls @ OrbitControls.js:249init @ report.html:503(anonymous function) @ report.html:280

I came across the page which states that the source code of OrbitControls.js should be from the same release as the three.js library. Update both to the current version. three.js r.75 So updated the three.js source link to r75 from of r71. It worked after that.

I cannot find the Radiance measure. Anyone has any idea on why it taken off from the BCL and when can we expect it be back.

Aaron, Thanks for your valuable inputs, it has given me direction on how to model the space. Just one more query, if I model or follow the vertical zoning, is it possible to specify/tell energyplus to throw/place the cool air/diffuser at 10 feet so that it only cools the lower portion of the double height space which will be exactly as it will be in reality. If there is an option in energyplus then as suggested by you, I will place high transfer windows in the upper part of the vertical zones and might also add zone mixing or zone cross missing objects.

Hi All,

I need advice on what is the best way to model a double height space that is spread across different spaces so that we have the simulation accurately modeling the thermal and daylight effect. I am attaching a .jpg of the scenario (top section) and possible zoning conditions. The middle one is vertical zoning and the bottom one is horizontal zoning. Following are my queries

1. If I follow vertical zoning what is the best way to treat the top section of the wall so that we have the daylighting penetration from the left/right zone to the middle office zone.
2. On the other hand if I follow horizontal zoning , is it a good idea to delete the roof and floor of the zones or make a void on the roof and floor?
3. How does energyplus react to this kind of situation when we leave a void between two zones or delete the surfaces between two zones.

Regards

Hi All,

I need advice on what is the best way to model a double height space that is spread across different spaces so that we have the simulation accurately modeling the thermal and daylight effect. I am attaching a jpg of the scenario (top section) and possible zoning conditions. The middle one is vertical zoning and the bottom one is horizontal zoning. Following are my queries

1. If I follow vertical zoning what is the best way to treat the top section of the wall so that we have the daylighting penetration from the left/right zone to the middle office zone.
2. On the other hand if I follow horizontal zoning , is it a good idea to delete the roof and floor of the zones or make a void on the roof and floor?
3. How does energyplus react to this kind of situation when we leave a void between two zones or delete the surfaces between two zones.

Regards

Thanks for your reply. I was able to solve the issue by downloading the component directly from BCL and the replacing the file in C:\Users\Name\BCL folder. Now it is working, I believe the issue was the .rb file was in a subfolder so it was not able to locate the same, so I copied the same in root folder same as the xml file

I downloaded the "Add PSZ-HP to all zones" measures from BCL, it is showing a broken script kind of red icon besides it. When i try to add the measure it says "Failed to compute arguments for the measure" Unable to locate primary Ruby Script path. It also doesnot show in the measures window. But when i run the model it throws an error "Measure "Add PSZ-HP to all zones" is missing its measure.rb file, update this measure and try again.

I tried downloading it again from BCL, however not able to as it is greyed out i.e. not allowing me to re-download. Kindly suggest how to update the measure or solution to remove the error at runtime.

I am using Openstudio 1.8. In sketchup , I used the script in Remove Unused Thermal Zones, under OpenstudioScript-Add/Alter Model. It say successfully removed XX zone, then when i open the file in openstudio and try to run, it either crashes or throws an error bad cast. OSM was not made in an earlier version

Hi,

When I use the remove unused zone script and delete unused zone while running the osm file either the openstudio application crashes or it throws an error in modeltoidf i.e. "Bad cast". Any suggestions

Regards

HI, I installed the latest version of openstudio 1.8.0 and first I encountered the problem with energyplus so I copied the energy plus folder from C:\Program Files\OpenStudio 1.8.0\share\openstudio to C: drive. But after that while running the Daylight simulation using radiance it is throwing an error "failed to run DaylightSim for annual daylight simulation".

Any suggestion how to sort the error.