Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
2

Temperature of Nodes around heat exchanger is not reasonable

asked 2016-03-02 10:41:29 -0600

lyw0211's avatar

updated 2017-05-04 09:09:03 -0600

I used OpenStudio to model a high school buildings in the cold area. There are heat exchangers in its AHUs for energy recovery between outside air and exhaust air. After checking the modeling output in ResultsViewer, the temperature of two nodes around heat exchanger is not reasonable for me. When the OA Temperature (Node 237) is low and exhaust air temperature (Node 213) is high, the OA temperature after heat exchanger (Node 212) is higher than exhaust air temperature after heat exchanger (Node 209), which is not reasonable for me. The detailed air loop and temperature variation are showed as followings. Does anyone know why it would happen? Thanks!

image description image description image description

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2016-03-03 09:02:38 -0600

Ivan Korolija's avatar

This should be possible when the heat exchanger is counterflow.

edit flag offensive delete link more

Comments

@Ivan Korolija, Thank you for your answer. That will be helpful!

lyw0211's avatar lyw0211  ( 2016-03-03 14:32:49 -0600 )edit

Your Answer

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

Add Answer

Training Workshops

Careers

Question Tools

1 follower

Stats

Asked: 2016-03-02 10:41:29 -0600

Seen: 576 times

Last updated: Mar 03 '16