Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

Debugging of errors

asked 2022-05-23 13:25:40 -0600

ShaymaaSK's avatar

updated 2022-05-23 13:39:20 -0600

I get this recurring error when I run my model. what could be the reason and how do I correct it?

CalcDoe2DXCoil: Coil:Cooling:DX:SingleSpeed="POINT_OF_SALE SZ-CAV COOLING COIL" - Air volume flow rate per watt of rated total cooling capacity is out of range error continues...
*************  **   ~~~   **   This error occurred 290355 total times;
*************  **   ~~~   **   during Warmup 0 times;
*************  **   ~~~   **   during Sizing 0 times.
*************  **   ~~~   **   Max=1.116266E-004  Min=1.056579E-004

thank you,

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2022-05-23 13:36:51 -0600

updated 2022-05-23 13:37:16 -0600

That warning means the DX cooling coil has an air volume flow rate about 2 times higher than expected.

The volume to capacity ratio for DX coils is DX coil volume air flow/DX coil cooling capacity.

The expected range is around 0.00004 - 0.00006 m3/s/W.

The coil air flow is too high or the coil capacity is too low.

edit flag offensive delete link more

Comments

Thank you so much for the clarification. How do you recommend I can correct the flow rate?

ShaymaaSK's avatar ShaymaaSK  ( 2022-05-23 20:13:43 -0600 )edit

Increase the cooling capacity or decrease the air flow rate by 2x.

rraustad's avatar rraustad  ( 2022-05-31 06:08:47 -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: 2022-05-23 13:25:40 -0600

Seen: 125 times

Last updated: May 23 '22