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

Revision history [back]

How to set minimum fan flow rate for VFD

In practice, it is common for AHU VFD fans to have some set minimum motor frequency. I've been trying to implement this is an OS/E+ model but seem to be stuck (i.e. you need to fix the fan so it never goes below 30 Hz)

@KyleBenne seems to be asking about this as well...but not sure if he ever got any satisfaction. https://unmethours.com/question/11631/fanvariablevolume-minimum-flow-input/

Anyone know how to accomplish this?

How to set minimum fan flow rate for VFD

In practice, it is common for AHU VFD fans to have some set minimum motor frequency. I've been trying to implement this is an OS/E+ model but seem to be stuck (i.e. you need to fix the fan so it never goes below 30 Hz)

@KyleBenne @Kyle Benne seems to be asking about this as well...but not sure if he ever got any satisfaction. https://unmethours.com/question/11631/fanvariablevolume-minimum-flow-input/

Anyone know how to accomplish this?

How to set minimum fan flow rate for VFD

In practice, it is common for AHU VFD fans to have some set minimum motor frequency. I've been trying to implement this is an OS/E+ model but seem to be stuck (i.e. you need to fix the fan so it never goes below 30 Hz)

@Kyle Benne seems to be asking about this as well...but not sure if he ever got any satisfaction. https://unmethours.com/question/11631/fanvariablevolume-minimum-flow-input/

Anyone know how to accomplish this?