Second floor zone temperatures are way higher than the first floor

asked 2024-07-04 07:41:29 -0600

Diego2119's avatar

updated 2024-07-08 12:58:32 -0600

Hello everyone! I am modelling a house in HCMC and my first floor is identical to the second floor (except for one room). I practically copied the first floor to the second floor. However when I check the temperatures of the room zones on the first floor they are much higher than the first floor. The first floor maintains the temperature I set on the thermostat almost all the time while the 2nd floor does not respect it at all. I checked and both floors have the same thermostat setting and the ideal airloads activated.

What could be the problem?

Thank you for your help.

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Comments

I am using OS App 1.5

Diego2119's avatar Diego2119  ( 2024-07-04 07:42:04 -0600 )edit

@Diego2119 can you upload your model to Google Drive, Dropbox, etc. and then share a URL for others to download? That would help others provide better solutions.

Aaron Boranian's avatar Aaron Boranian  ( 2024-07-08 12:58:46 -0600 )edit

As per @Aaron Boranian's suggestion, little to work with here without the OSM file.

If the 2 floors are ~identical, what exactly differs between them?

  • 1st floor: slab-on-grade? boundary conditions?
  • 2nd floor: exposed roof?

These 2 considerations alone would generate noticeable differences in peak + annual cooling. Same thermostats, any cooling limits (e.g. rate, capacity)?

Denis Bourgeois's avatar Denis Bourgeois  ( 2024-07-29 05:43:04 -0600 )edit