Now Samsung

[vacerator]

No one handed me

anything either. I have worked from age 16. Eleven if you count paper routes.
My folks had very lean years also. I am the eldest of five, and my folks are gone. Both grew up very poor.

 

[whatsername]

Well, there goes another member for my block list.

 

[vacerator]

Don,

only one member? Who?
Touche' then.
The original discussion was between two of us, and then a third trolled along.

 

[vacerator]

After last night,

I needed a spinal block. LoL.

 

[vacerator]

This summer,

I'll be cruising in my 1977 Pontiac Grand Prix. From when cars still had style, and were more than point A to B.

 

[tolivac]

8,000RPM spin speed?Was it 800RPM?The matteress cover-when it breaks-we figure the washers spin management system cannot deal with the sudden change in load.8,000RPM would be the speed of a lab centrifuge-some can go to 30,000RPM!And yes these are enclosed in fairly stout metal cabinets-at that speed broken glass test tubes would be schrapnel like a hand grenade tossed into the room!International
Centrifuge makes the lab units.Remember some models look kinda like wringer washers with the wringer removed.

 

[centenialguy]

tolivac,

not to mention, that most of the parts would melt at that speed from the heat.
The redline of a V-12 S600 is only 6,000 rpm's.

 

[tolivac]

Yes,parts would melt unless they were designed to run at that speed.Don't know much about S600 V-12 Gas turbine jet engines primary rotors run at 10,000 RPM to 15,000RPM and have pressure lubed bearings.The secondary rotor runs at 4,000 RPM-turning the big fan as on a widebody jet engine or as a power turbine for turning a genset for electric power,pumping and compressing natural gas,running ship props thru a transmission.This gas turbine would generate 40,000-50,000 HP!Yes lets spin the washer drum with THAT!!!

 

[combo52]

Oops

Rex I meant 800 not 8000RPMs but I guess that everyone else figured that out.

 

[johnb300m]

jet engines

The vast majority of those jet turbines DO run at temps and speeds beyond their melting point. But they are also strategically cooled with low compressor air through vanes and holes in the turbine blades that keep them cool in the abusive environment. If that 1500F "cooling" air ceases even for a second, those high turbine parts melt and seize quite quickly.

 

[centenialguy]

Yes Johnb300, and

Chrysler used a York/Airtemp R12 refrigerant compressor to keep the gas turbine cool also.

 

[tolivac]

Yes,I figured it was a typo-Wouldn't want to be around a washer that spins at 8,000RPM thats unbalanced!!!
And yes as JohnB300m points out turbine blades are cooled with compressor bleed air.On very RARE occasions this fails with bad things happening!For the most part gas turbines are VERY reliable engines!!
Never heard of refrigerants cooling turbine blades-at the temps the blades operate at the refrigants would break down to toxic and corrosive gases.The bleed air method is the most used.The cooling system with refrigerants would add considerable weight-say for aircraft.For aircraft the engine has to be lightweight as possible.Good reason why many engines had compressed air starters-the electric motor and battery supply required would be too heavy.Newer generation engines can be electically started.Hence in the older days why "start carts" were used.