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.

Sent from my iPhone

On 22. Oct 2021, at 22:03, praftery @.***> wrote:



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.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHubhttps://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FCenterForTheBuiltEnvironment%2Fclima%2Fissues%2F118&data=04%7C01%7C%7C9a3d3230728d4ec1939608d99597053b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637705298126539239%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Kj4IfP8X0tR9FCesU6YJ%2FxDUGBcYzQgH80cvRpuGdHQ%3D&reserved=0, or unsubscribehttps://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fnotifications%2Funsubscribe-auth%2FAIWZJAGNZJUBMF6LOYQFYVDUIG7RFANCNFSM5GRJDEHQ&data=04%7C01%7C%7C9a3d3230728d4ec1939608d99597053b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637705298126539239%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=O7ZJXPkbj1Qod13vmJ8FII9YCai45xbi5W2WiODjINc%3D&reserved=0. Triage notifications on the go with GitHub Mobile for iOShttps://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapps.apple.com%2Fapp%2Fapple-store%2Fid1477376905%3Fct%3Dnotification-email%26mt%3D8%26pt%3D524675&data=04%7C01%7C%7C9a3d3230728d4ec1939608d99597053b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637705298126549232%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=v8wx6bthj91y5ZH1F28rzp8qoXlJB3G0cpviwQnQiEA%3D&reserved=0 or Androidhttps://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fplay.google.com%2Fstore%2Fapps%2Fdetails%3Fid%3Dcom.github.android%26referrer%3Dutm_campaign%253Dnotification-email%2526utm_medium%253Demail%2526utm_source%253Dgithub&data=04%7C01%7C%7C9a3d3230728d4ec1939608d99597053b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637705298126549232%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=jId9vH5nk%2FzMqkeeOXQGqAg2duZYjBXwZ03M6wMgWuM%3D&reserved=0.

[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