First time here? Check out the Help page!

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

Debugging of errors

asked 2 years ago

ShaymaaSK's avatar

updated 2 years ago

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,

Preview: (hide)

1 Answer

Sort by » oldest newest most voted
1

answered 2 years ago

updated 2 years ago

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.

Preview: (hide)
link

Comments

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

ShaymaaSK's avatar ShaymaaSK  ( 2 years ago )

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

rraustad's avatar rraustad  ( 2 years ago )

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: 2 years ago

Seen: 139 times

Last updated: May 23 '22