Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question

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?

edit retag flag offensive close merge delete


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 image David 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 image maja244  ( 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 image David Goldwasser  ( 2019-06-25 13:13:28 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted

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

image description

image description

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer


Question Tools

1 follower


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

Seen: 405 times

Last updated: Jun 25 '19