Economizer hours analysis

[praftery]

I had a few user requests to implement economizer analysis. For airside economizing this is similar to existing functionality on the natural ventilation tab, though we'd need a few other features - e.g. different default ranges, another input for minimum outdoor air fraction, high limit controls, etc. For waterside economizing, we'd need to use wetbulb conditions instead of drybulb.

A few options for how to proceed here:

1. add this as a new tab,
2. combine this - essentially similar - functionality with the natural ventilation tab, and rename it to something else
3. add as a feature to the psychrometric chart tab.

I'd lean towards the last option above.

[giobetti]

Hi Paul, Thanks for gathering and sharing feedback. We could implement something like this in the mat vent tab with a drop-down that allows us to swap the chart (and the controls) being displayed. I am not too familiar with the details of the air side economizer, so maybe you could either sketch the inputs or we could have a quick zoom call about it.

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[praftery]

I'd be happy to discuss, please pick a time that suits you on my calendar.

There's a good article on high limit controls here if you are interested.

[giobetti]

thanks, I'll look into this and get back to you