Boiler steam engine
The boiler steam engine was a compact form of a steam power plant for generating electricity .
History of the boiler steam engine
The boiler steam engine is a combination of a steam boiler with a piston steam engine. Its development goes back to locomotive construction .
In agriculture, traction engines were used from 1800. Boiler steam engines were built until the early 1960s. They can still be found in some wood processing companies today, as the wood waste and chips can be processed into electricity in the workshop. The resulting exhaust steam is usually used for heating and wood drying (coupling of power and heat).
Known German manufacturers were Heinrich Lanz in Mannheim, Assmann & Stockder in Cannstatt and 1928 by the merger of the 1862 in Magdeburg , founded Maschinenfabrik R. Wolf and Buckau AG of Magdeburg resulting Maschinenfabrik Buckau R. Wolf AG with production facilities in Magdeburg and Grevenbroich . The company mainly manufactured briquette factory machines, sugar factories and boiler steam machines.
Description of the boiler steam engine
In the boiler steam engine, the steam engine was mounted directly on the steam boiler. The boilers were designed as flame tube boilers and all ancillary units such as feed water pump , preheater and filter were installed directly on the boiler. Because of their compact design and origin, they were also known as locomobile boilers . The steam engines had different nominal outputs (depending on the size of the system from around 15 kW to 100 kW). They were mainly used to drive a generator with which the company generated its own electricity. The boiler steam engines had a nominal operating pressure of 8 to 12 bar . They were equipped with a superheater and thus reached superheated steam temperatures of up to 350 ° C. The size of the superheater heating surfaces corresponded roughly to the evaporator heating surfaces.
Data of the boiler steam engine shown
The illustrated boiler steam engine of the type ES 7 was delivered in 1958 by Buckau R. Wolf. The flame tube boiler had a nominal pressure of 12 bar, test pressure of 16 bar and a superheated steam temperature of 320-350 ° C. The evaporator heating surface was around 24 m² and the superheater heating surface 25 m².
The superheated steam engine installed on it with a nominal output of 51.5 kW had a cylinder bore of 190 mm, a piston stroke of 320 mm and a nominal speed of 360 / min. The flywheel was 1.6 m in diameter and weighed 560 kg.
Individual evidence
- ^ Boiler steam engine , Magdeburg Museum of Technology.
- ^ Assmann & Kettner, formerly G. Bausch , Power and Steam Engines.