I visited one of the monthly openings at an old power station from 1916 that is still operational, it is only maintained and started up to give a demonstration of a beautiful piece of machinery to the public. A small group of volunteers maintain and run the generator and museum.

Specifications

The engine is according to B&W the oldest running 4 cylinder B&W diesel engine in the world. The engine was manufactured in two versions, one for land and one for ships, the difference was that the ship version could reverse.

• B&W- DIESEL ENGINE type 4.124 L (L stand for Land engine).
• Build year 1923.
• Fabrication number 984.
• 4-cylinder 4-stroke trunk engine at 500 HK.
• The engine was first started for test the 21st june 1923.

• Engine length: 7.150 meters  (5.700 meters without generator and dynamo).
• Engine width: 1.700 meters.
• Engine height: 4.100 meters.
• Weight: 57000 kilogram.

• Piston diameter: 480 mm.
• Stroke length: 700 mm.
• Stroke speed: 4,375 meters / second at 187,5 RPM
• Fuel usage: 90 kilogram/ hour at 1/1 load ( 700 amp. DC.)
• Efficiency at 1/1 load: 76%

The B&W diesel engine does not have a starter engine, but uses compressed air to get the pistons up in a speed where the fuel can take over, the compressed air is also used to dust the fuel when the engine is running. The dusting pressure can reach 65 bar but the engine runs best around 45-50 bar.

• Start air pressure : 65 bar.
• Piston surface pressure at start 1808,64 cm² x 65 kg. = 117,56 ton
• Fuel dusting pressure: 65 bar.
• Fuel prepump pressure : 5 bar
• Four stepped compressor takes up 25-30% of the engines power ~ 125 HK

• AC generator produces 685 ampere at 380 VAC
• RPM = (60 x frequency)/16 pole pair = (60 x 50)/16 = 187,5 RPM
• DC dynamo produces 700 ampere ar 480 VDC

Pictures

Demonstration

Starting up

Stopping down

Their official homepage, only in Danish: http://www.thrigeelvaerk.dk

Through the last 9 months, since I launched this new site,  I have had 10000 unique visitors to my site, it feels great that the information I put on here is also finding a use.

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• A 2 Watt tube amplifier
• Floating water bridge experiment
• A simple plasma globe

I hope you will enjoy reading these articles, get inspired and hopefully start conducting experiments yourself.

The 2x 30W EL34 tube amplifier is sitting on the work desk with around 120 wires sticking out from sockets and print boards, wiring it up correctly with minimizing magnetic fields from heater wires takes longer than expected.

A coil winder for the 160 mm diameter secondary coil for the DRSSTC have been constructed, its utilizing a geared motor with a variable frequency drive to control the speed and ramp torque, the coming weekend will be used for winding the 2200 windings of 0,25 mm copper wire and varnishing the coil.

More 25 mm diameter brass material is in the house, so the last fittings for the capacitors, resistors and spark gaps for the 600kV Marx generator will be turned on the lathe in the coming weekend while the varnish is drying.

This is it for now, check back for updates or new articles

600 kV Marx Generator (December 2008 – )
Full bridge IXYS 60N60 miniblock IGBT DRSSTC (March 2009 – )
520W SGTC with RSG (July 2008 – )
2x 30W EL34 tube amplifier (July 2009 – )
3500W VTTC with a Q5/2000 tetrode tube (November 2008 – )
TL494 flyback driver (June 2009 – )
4x4x4 Ledcube (September 2009 – )
Various SMPS (October 2009 – )

It is primarily the DRSSTC I put my time into as I have the materials and it is one of my biggest projects to date.

There is quite some work to be done in moving all my articles to this new site. Almost all of the articles are being restructured and will have more information added. Picture layout is also changed for a better overview of the article.

To view all the original articles, visit www.disorder.dk. Once all the articles have been moved, they will be deleted from my personal homepage.