6 Comments
User's avatar
Scott Kitzerow's avatar

I know this probably doesn’t have anything specific to deal with the previous issue here but I’ve been wondering if water 💦 is used to cool 🆒 the data center (which is still out for debate maybe ?) wouldn’t that increase the humidity in the general vicinity of the center since there is such quantity used from my understanding??

If so that could drastically change the atmosphere in the area significantly don’t you think 🤔?

Colin Mellars's avatar

The facilities here are specifically dry-air-cooled by Ordinance in Marana and by Project Blue in Pima County. I believe the Tucson ordinance is tracking that direction as well.

That makes the localized heat problem worse, depending on how exactly the specifications are handled. This is particularly an issue in Marana because they play fast and loose with language. If the total facility power consumption is 500-750MW, then it will be highly dependent on location conditions, but will certainly raise the local temperature (ala Urban Heating). I'm working on this now. If the facility has a 500-750 MW IT Load, the total power consumption is likely to be 40-50% higher due to the air-cooling decision. Same problem it just makes the total heat increase worse because the amount of power going into the facility is substantially higher.

If evaporative cooling towers are used in a data center cooling setup, you are correct, it will increase the local humidity, but it will also have a couple of other nasty side effects, specifically it will increase the heat transfer (thinking burning yourself with steam versus opening a hot dry oven) and it also removes water from the local water cycle because of the extreme heat, moving it up high into the atmosphere from the stack effect and relocating it far downstream. In situations where evaporative cooling is used, only a small percentage of the water used actually stays in the local water cycle. This is a massive issue in the Southern Arizona case, as we can't really afford to draw down already-strapped water reserves from the local water cycle. This also connects to power generation requirements, specifically TEP. If they are going to build new generating facilities that are thermal power generators, they will use a lot of water and commonly use evaporative cooling towers, which means they will remove substantial water volumes from the local water cycle in power generation, which is a serious issue (this is in my roadmap to investigate).

MaryAnn Adams's avatar

I signed the petition and have sent it out to others to sign as well. Thank you Colin.

Colin Mellars's avatar

Thank you so much!

Nikki's avatar

I’m hopeful if it goes to the governor’s office, that she said, she would veto anything coming across her desk to work on the budget. We shall see.

Phyllis M. Farenga's avatar

Vote Out these Gangsters. HB2873 is more Segragation and Discriminatory Policies being generated by our corrupted Elected Government Officials both State & Local to benefit the Elites, Globalist and White Supremists. These elites, globalists want slaves. Data Centers and AI is part of the Master Plan.Marana and other small towns have been turned into an AUTOCRACY. People elected a Disfuntional Democratic Republic. Now Vote them out ! We the People. No more Kai's,Post's,Officer's Ziegler's and Murphy's.Get rid of Marana's Town Nepotism Clause. It promote's White Supremacy.