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Here’s an electric pumper fire truck with a small “range extender” diesel generator.
https://youtu.be/GPcacmetIX4?si=vDCdXGkg5oezpjwo
Looks impressive but no mention of price difference between...

There’s more than one way to skin a cat. However I’m not comfortable flowing more Secondary then Primary so prefer staging based on GPM but that requires flow measurements instrumentation &...

Water flow through the “Magic” section of pipe will depend on Primary/Secondary flows.

When Secondary flow is at or greater then Primary flow, it’s time to start thinking about bringing on the next conditioner (boiler/chiller) [after a time delay to validate the true need].
The next...

I agree with all but the last part of this.
It’s the Secondary that must not flow more GPM then the Primary or it will be shorted of conditioned water & make up that shortfall with Seondary...

What is A2L?

https://trutechtools.com/what-is-a2l

Not finding that here
https://www.toshiba-aircon.co.uk/wp-content/uploads/2018/04/R32_Common_Questions_120418.pdf

or here
https://arema.com.au/wp-content/uploads/2021/11/R32-FACT-SHEET.pdf

(1) You’re not seeing the big picture which is Tesla has disrupted the Auto industry leading to an accelerated adaption to BEV vehicles thus fulfilling their mission statement which again is…….
“Our...

Let’s look at a real world example of Tesla safety.

https://www.cnn.com/2023/01/03/us/tesla-crash-cliff-california-cec/index.html

[SPOILER ALERT] There was no fire ball at the end like an ICE...

I read it on the Internet……
It HAS to be true.

We’ll seeings how Tesla's mission statement is

[“to accelerate the world's transition to sustainable energy.” This mission reflects the company's commitment to helping lead a global shift away...

I recently worked on a couple of 44w overhead dinner plate style LED lamps that stopped working.
Come to find out that the manufacturer (Sylvania) had assembled them with a mechanical positive...

If you consider (guess) it’s a 120vac motor then 45 mfd sounds about right for a running cap assuming half the voltage/double the cap capacitance.
What gets me is why 4 wires running down from the...

I’m guessing the following.

this this is a 120vac corded model.
that R-1 is the run windings & R-2 the start windings.
That the yellow wire is connected to normally closed contacts & the...

My guess is that the centrifugal switch is on the bottom of the motor (output shaft).
Maybe you could abandon it & install a potential relay instead (ring out the wires to determine which terminal...

If you want to talk about the hard way to learn, try starting out in the field DECADES before the Internet was even thought about!!!!!

Now get off my lawn punk!!! :-)

I agree with finding...

First & foremost the best way to do this would be a 2 stg stat but given that’s not an option (per the OP) we are both coming up with an alternative method of staging the 2nd compressor based on heat...

Or enable the second stg via a RA stat (in series with first stg).

Putting it on a drive with a low enough HZ setting should allow the voltage to reduce to the point that the motor MIGHT survive but it’s not the way to fix this issue & will introduce further issues....

I thought converting to air cooled but the fact that this is a pulp mill I would think there would be an abundance of airborne fibers to impact the coil.
Have you ever worked on any coils with...

First off…
How old are those Pomona Air units?
Never mind, I don’t want to know.

How about a centrifugal separator?
https://youtu.be/AatyA_fA3Hs?si=kphh0v97sEO3pgTR
Don’t have firsthand...

Unboxed Manufacturing process explained.

Skip to 8:00
https://youtu.be/S8KD-8c9ri4?si=W8A_pTLCnRfQjJn6

Tesla’s next offering will be inexpensive largely due to reduced manufacturing costs vs capabilities.

This story touches on this. ...

Kinda reminds me of the good old days

https://www.saturdayeveningpost.com/2017/01/get-horse-americas-skepticism-toward-first-automobiles/

Those crazy Norwegians disagree.

https://blog.wallbox.com/how-norway-became-a-global-ev-leader/

If memory serves me, I had at least one or two systems that were running in a vacuum on the low side as the dry cooler was on the roof & the makeup down below (computer/server room application).
I...

I know of a campuses that runs 20# Delta P for hot water loop & 30# for chilled water loop so sounds like your in the ball park.

Make sure the fluids are counter flow if the coils are multi pass.

If the coils are single pass all you have to worry about is making sure the supply is at the bottom & the return on the top. That way any air in the line will harmlessly pass through the coil.

If...

Reminds me of one the service managers I had.
I asked where the print’s for the building where.
He responded… In your dreams!!!

The POINT is that advances in technology alone is what Should drive ALL emerging technologies.

And the government did mandate the end of analog tv broadcast that likely sped up the demise of crt...

I’m just hoping (dreaming?) that ev prices continue to fall to make them a better option then ICE to more drivers by the time 2030 gets here.

How many still have a CRT tv?

Not quite.
The juice will be worth the squeeze for quite some time to go with ev.

The B-52 (airframe) works well & wont be cost effective to replace at this time.

The airframe is what gets the whizz-bang stuff in the air & it can’t be replaced with today’s tech Economically. THATS the point I’m attempting to make.

Technology advancement eventually Plateaus.

A Liebert AC 4 comes to mind but you’re asking for a simple solution.

How about a Lead/Lag selector switch & a two stg stat?
If the lead unit can’t maintain temp, the lag is enabled.

In...

That’s what I’m thinking.

It’s my understanding that DA tanks need to be kept at about 6# (225° or so) in order to expel gasses.
DA tank gets its pressure from a regulator valve & it sounds...

Yeah and having gone as far as he can in THIS world, he’s set his sights on Mars :-)

Looking at this system via the internet……

I’m thinking the only thing unique about this install is the fact that the pumps are elevated above the ground level.
In my minds eye, the typical...

Musk is an alien.

Will actually he is having immigrated from South Africa first to Canada, and then to the United States.

That’s pretty cool!!
...

And yet the USAF still uses a 72 years old aircraft as their primary bomber.

https://en.m.wikipedia.org/wiki/Boeing_B-52_Stratofortress

Advancement has its limitations/compromises.
Is the...

Awesome success story!!!

Obviously EV ownerships not for you as you’ve stressed in the past.
EV ownerships not for everyone.
But Many have figured out how to make it work including myself.

Winter EV usage is quite doable if you are smart about it.

This video is 10 yrs old & shows one Norwegians winter EV experience

https://youtu.be/fsLMlozXjhk?si=6oCcXKG3RznGgiFl

Pre:

https://www.merriam-webster.com/dictionary/pre-

pre-
prefix
1
a
(1)
: earlier than : prior to : before

I da-no?
Maybe this……

https://youtu.be/ORbseYAkzRM?si=0I-FQ6A-RjRpgQtH

No argument with that but I’m not sure of the tie in to self driving autos.

You either choose to have a machine transport you or you transport yourself.
Each is a decision that will come with...

That’s a strong reasoning for self driving cars.
The younger generations will adapt much easier than my generation.

For many, robo taxi’s will be how they get around.
No worry of car...

I have a Milwaukee M12 heated hoody that came with a battery holder with a female coaxial cable connector.
When the battery in my H10 gave up I just soldered in a male coaxial connector pigtail &...

Actually lithium ion batteries loose less charge compared to other battery types.

https://au.renogy.com/blog/everything-you-need-to-know-about-lithium-battery-charging-cycles/

And the thing...

I use a Milwaukee M12 battery on mine with no issues.