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Initially diesel-hauled passenger trains like the Northerner on the North Island Main Trunk had a separate steam heating van, but later the carriages of long-distance trains like the Overlander used electric heaters supplied by a separate power or combined power-luggage van. Train heating boiler, type “Köthen”, at the Saxon Railway Museum
An electric heater is an electrical device that converts an electric current into heat. [1] The heating element inside every electric heater is an electrical resistor , and works on the principle of Joule heating : an electric current passing through a resistor will convert that electrical energy into heat energy.
Electric heaters are usually part of a fan coil which is part of a central air conditioner. They circulate heat by blowing air across the heating element which is supplied to the furnace through return air ducts. Blowers in electric furnaces move air over one to five resistance coils or elements which are usually rated at five kilowatts.
One application of a specially shaped heating element is to increase the surface area of the heating element. A large surface area means the element can operate at a lower temperature and still deliver a large amount of heat. The lower temperature may make a heater safer. However, other safety measures can assure the safety of conventional heaters.
Despite its name, a radiator does not primarily heat a room by radiation. If positioned correctly a radiator will create an air convection current in the room, which will provide the main heat transfer mechanism. It is generally agreed that for the best results a steam radiator should be no more than one to two inches (2.5 to 5cm) from a wall.
In 1923, English Electric supplied the EO electric locomotives for the New Zealand Railways for use between Arthurs Pass and Otira, in the Southern Alps. Between 1924 and 1926, they delivered nine box-cab electric (B+B) locomotives to the Harbour Commissioners of Montreal (later the National Harbours Board); later they were transferred to ...
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