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High temperatures in winter

asked 2019-06-19 15:00:29 -0500

maja244 gravatar image

updated 2019-06-21 11:59:07 -0500

I'm a new user of OpenStudio. I would like to know why my temperatures during the winter are so huge? I did schedules for heating from 16 degrees to 20 degrees during the day in office rooms and from 16 to 24 in the bathroom. But from December to April sometimes temperatures are higher than 26 in all the spaces. I didn't do any of the HVAC systems. How can I change it?

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Can you provide more details about the mechanical system you are using? It is possible that one zone is controlling air loop supply temperatures for multiple zones, which could cause many, but not all, zones to be higher than target setpoints. You could have excessively high internal loads that the system isn't sizing to meet.

David Goldwasser gravatar imageDavid Goldwasser ( 2019-06-24 12:21:21 -0500 )edit

I don't use any of the mechanical systems. I use only Ideal Air Loads

maja244 gravatar imagemaja244 ( 2019-06-25 09:41:57 -0500 )edit

What are your cooling setpoints? If internal loads are too high, you could warm above the heating setpoint. And it won't cool unless there is a cooling setpoint that it crosses. May be worth turning off ideal air loads to see what zone does when un-conditioned.

David Goldwasser gravatar imageDavid Goldwasser ( 2019-06-25 13:13:28 -0500 )edit

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answered 2019-06-25 15:08:50 -0500

maja244 gravatar image

updated 2019-06-25 15:46:15 -0500

My setpoint cooling in all the rooms is 27 during the year. For me, it is so strange to set cooling schedules in winter, but yes internal loads are so high. When I turn off Ideal Air Loads temperatures in winters sometimes are even 35 degrees. In the photo, I uploaded temperatures with and without Ideal Air Load

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Asked: 2019-06-19 15:00:29 -0500

Seen: 365 times

Last updated: Jun 25