The big Dieselhouse engine, starting and stopping.

B&W Diesel engine, H.C Ørsted værket.
Danish powerplant.
Engine buildt in 1933
22500 horsepower
The engine are startet with high pressured air. It is able to startup without electricity.

http://www.dieselhouse.dk/

Every 1. and 3 sunday in the month 11:00 am they start it.

Category:

Science & Technology

Tags:

• dieselhouse
• engine
• huge
• horsepower
• B&W
• power

[WizzleThump]

smart motherfuckers without computers made that.

[victor4444]

@MF11283

Wow, i would like to see those guys ;-)

[ismaelkhan]

@WizzleThump damn right man, today we have allsorts but in those days they really knew how to use their heads.

[Mitsugejl]

@ApolloWasReal Cool :) I was studying to become a marine engineer by means of part time e-learning but the government did put a halt to it unfortunately. Hopefully they will restart it sometime soon.

Combustion engine mathematics/physics is very interesting and complicated. I am a fan of large dieselengines and in my sparetime I usually fixes smaller, 1 cylinder marine diesels - just a hobby of mine :)

[ApolloWasReal]

@Mitsugejl Yes, I'm an electrical engineer, with a side interest in energy and power. The compression ratio is simply the ratio of the bore volume with the piston down (when the exhaust valve opens) to that with the piston at the top (when the fuel is injected). The greater that ratio, the greater the maximum possible efficiency of the engine.

[Mitsugejl]

@ApolloWasReal I am afraid that I don't know that. Are you an engineer perhaps?

[pingusiapingusia]

@pingusiapingusia WOW ,THANKS

[ApolloWasReal]

@Mitsugejl Are you referring to the efficiency? The theoretical efficiency of any Diesel engine is determined by the compression ratio. Do you know what that ratio is? The actual efficiency is somewhat less due to heat losses through the cylinder walls, which is why larger engines tend to be more efficient - the volume to surface area of the cylinder increases with size.

[Mitsugejl]

@ApolloWasReal Could it be beacuse the exhaust pistons also produces some power to the engine itself? The engine has two crankshafts, one for the pistons and one for the exhaustpistons and they are coupled together with the chain i mentioned before...

[ApolloWasReal]

@Mitsugejl 10,000 (ten thousand) kcal/kg is equal to 41.868 MJ/kg, a little lower than my figure of 46.2 MJ/kg. That implies a slightly higher engine efficiency of 35.8%.

[Mitsugejl]

@ApolloWasReal It was the worlds largest dieselengine for over 30 years and was in constant use until somewhere in the 70'ies. It was used as an emergency generator at H.C. Oersted power plant until 2004 and is now retired from active duty and is used solely as museum engine. Engine no. 2000. The pistons is about 3 stories high, a reserve is stored in the facility but has never been changed in the engine 80 years of operation.

[Mitsugejl]

@ApolloWasReal It is running on fuel with a flammability of 10.000 kcal/kg and it is injected at 350-400 bars.

The engine is cooled by water from Copenhagen harbour by means of a heatexchanger. The lube oil is also cooling the pistons. The generator was supplied by ASEA. The crankshaft weighs 140 tons, the flywheel 80 tons and a complete piston with rings and connecting rod weighs 4,5 tons. The drivechain for blowers etc., weighs 700 kilos/meter.