Industrial Steam

Mills

We manufacture the Mills boilers, which run up to 417 HP. Honestly, to me that's big enough to make me nervous.....

Just one small story...

I designed a couple of 3 mW steam turbine replacements, for Dartmouth College in the early 1990's. They use 460 PSIG steam and the exhaust at 20 PSIG goes to heat the campus. Big water tube boilers, I forget the make.

During the ASME steam blow (mirror plate test to clear the turbine feed line) the exhaust was sent up an abandoned chimney to safe atmosphere. You should have heard the roar!
It was somewhat dry out, crisp, clear and cold, temperatures in the low single-digits.

About a quarter mile away, an otherwise clear athletic field was dusted with snow from the process... that really stuck with me.

big steamers

Here's a good one...biomass boiler at local paper mill. Was working on maintenance crew all the time it was being built....nine stories tall and hanging in the building. Burns 1500 cord of wood and 750 tons of coal a day, generating 685,000 cubic feet of steam per hour at 1300 PSI. Steam runs two large turbines and the waste steam (650 PSI) feeds the mill......just a little steamer.
Amazing the support piping, high pressure feed pumps, water treatment systems. Got a good education on high pressure boiler. It was a Babcock/Wilcox and went on line in 1983 and is still pumping out the steam.

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Mr. Egli only

writes with a British accent, am I correct?

Largest I've worked on is 300 hp steam, industrial process. Worked on some similar sized HW boilers, too. Participated in the change-out of two big HW firetubes, replaced with 5 little Teledyne-Laars copper-tubes (heating plant for a 12-storey apartment building)

Maybe it's pronounced treem, to allow for an accent

Looking back for cryptic clues in my post, I notice I did not talk about my Hooverizer but my vaccumizer.

This beats me, I have never known it to be a typically British word but I guess it does make us all sound much smarter. Autoflame is from the UK, so is Invensys, it thus makes sense they would put their twist on the technology. Cleaver-Brooks also speaks of oxygen trim.

The dictionary is the erudite one here, to trim is a verb that has many meanings. We trim our Christmas tree by adding much frilly decoration. We trim hats and boilers the same way by customizing them with whatever fancies us. Now, we can also trim hair... but, I won't go down there either.

Lots of people here in Dayton talk about airplanes -and stabilizer trim. So do people who make boats float. This use of trim has to do with cutting and balancing some parameters for optimal performance. Of course, staying afloat in our ankle deep Great Miami River doesn't require much sophisticated control at all, nevertheless, I take it oxygen trim has got to be an adaptation of this meaning.

The Wright brothers did test their engine no. 3 down on the river, and happily, it did not sink. There must be something for good trim.

We do continuous combustion analysis in all our modern car engines; it follows we should do it too for all our fuel burners. Eventually, we will. We will again, because worrying about excess air was already an obsession of our old Dead Men. Reading their old books on coal firing you get the clear message you shouldn't mess around keeping the fuel door open long.

Thanks for the good fun. Did I answer any questions?

Proud parenting

You seem equally proud of your son and your boiler, congratulations. You all look great. Good job.

Won't it be hysterically funny, when you'll just need to produce a picture of some cool boiler to calm little Hunter during a colicky night?

I'm happy for you.