Motorised generators can be used to create electricity directly or create steam which can then be used to turn a crankshaft. Generators can run on just about any type of fuel, including gasoline, diesel and kerosene. Waste oil, used motor oils, are an environmental hazard and disposing of them poses problems. Because of this, several manufacturers have started designing generators and engines that run on waste oil. Used cooking oil is another source of waste oil that can be used to power a generator.
The Steam-Flo generator from Sioux Corporation uses waste industrial and automotive oils to generate steam. The Steam-Flo can produce up to 156kg. of steam for every 3 gallons of waste oil per hour. The steam can be used in the concrete industry, commercial greenhouse industry, and to thaw pipes.
The Phoenix 5-Series generator from Cyclone Power Technologies uses used, waste engine oil to produce steam power. The engine works by injecting used oil, or any number of other types of fuels and oils, into a centrifugal chamber where the oil is ignited and mixed with heated air. The chamber heats coils of water to 0-11.111 degrees C, and the steam is used to push pistons. Cooled water is then returned to the combustion chamber in a closed loop system so the water never has to be refilled.
The Vegawatt generator from Owl Power Company runs on waste vegetable and cooking oils. The generator is designed for use in restaurants that produce a lot of waste cooking oils. You poor in unfiltered, raw cooking oil and the generator filters, dewaters and heats the oil for use in a modified diesel engine. The Vegawatt can produce up to 5 kilowatts of electricity, which covers around 25 per cent of a restaurant's energy consumption.