#119 wetBulb temp sensor

Zak Kaylor Thu 8 Aug 2013

Although Haystack has incorporated air & water temp sensors, we're missing a wetBulb equivalent.

For example, for an outside air temp sensor, we might want a similar point like outside wetBulb temp sensor.

I am suggesting that we use wetBulb in lieu of air, since air readings are really the same as dryBulb readings. Any existing rules with air and temp and sensor should not return the wetBulb temp sensor, which would be guaranteed with this tagging convention.

Brian Frank Tue 13 Aug 2013

I like this proposal, its seems simple and clean. So basically the tag air will be associated with dry bulb sensors. Then web bulb sensors will use the tag webBulb.

Any other comments? If no objections I say we go with it.

Just an aside, I'm interested to know what people commonly do for web bulb - do you have sensors specifically for it, calculate it, or pull it from a weather service?

Michael Reining Thu 24 Oct 2013

Brian,

We use outside air temp sensor and outside air humity sensor to calculate wetbulb using a Psychrometric object.

We use the calculated outside wetbulb temp sensor to activate our free cooling system at multiple locations in the district.

Brian Frank Tue 29 Oct 2013

Just the one comment, so I'll consider this decided. I will add a new wetBulb tag to the weather section.

Joachim Verhelst Thu 19 Dec 2013

I have a small comment (but great initiative, otherwise!): Either a typo has been made, or the name (Webbulb) is chosen on purpose, and I am missing the clue. ;-)

The normal terminology is "WeT bulb", not weB-bulb.

Brian Frank Thu 19 Dec 2013

It is just a typo I didn't see until after I pushed the site. It is corrected for next version

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