Waller Steam Engine

This steam engine was used to power the flow of gas in Aberdeen Gasworks.

From the 1800s until the 1970s every town had a gasworks. This was because before natural gas was discovered under the North Sea we had to rely on ‘coal gas’ which was literally gas extracted from coal.

© Royal Commission on the Ancient and Historical Monuments of

Scotland. Licensor www.scran.ac.uk

The coal gas had to be cleaned before it could be used and this engine drove two ‘exhausters’, which pumped the gas through the various cleaning treatments before it was stored in a gas holder. This was one of several exhauster engines in the gasworks.

Vertical Boiler

This boiler design is called a ‘vertical cross-tube boiler'. Pipes criss-cross the inside of the boiler. These pipes held the water to be turned into steam by the heat of the fire inside the stokehole. This is different to a Lancashire

boiler where the fire was inside the tubes and the water inside the shell of the boiler.

This particular boiler was used at Aberdeen Gasworks. It provided steam to power steam engines, mostly pumps. These pumps forced the dirty coal gas from the coke ovens of the gasworks through a series of tanks to clean it for use in homes and businesses and for street lighting.