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Raising Steam By Trailer

19th December 1958
Page 65
Page 65, 19th December 1958 — Raising Steam By Trailer
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ALTHOUGH it has been built as a stand-by -outfit to take the place. of static plant, a mobile steam generating -trailer constructed by Miekleover Transport, Ltd.. Whitby Avenue, London, isl.W.10, for United Dairiea, Ltd., might represent a means for ,making steam power available at locations Where its

Use wthild otherwise be impracticable.

An Eagle four-Wheeled turntable-type 4-ton .low-loading trailer forms the basis of the outfit, the Major component of which is a Stone Vapor high efficiency oil fired boiler. `,fhis has a-net weight of 3,520 lb.; and i§ mounted Centrally, being bolted through the galvanized-steel floor on to two transverse members

attached to the chassis. .• , Behind a detachable panel on the off side are all the connections for water, fuel and steam. The mains water supply is taken in through a I-in, pipe to a 20-gal. header tank, mOunted at the front of the body on the near side, and may be passed, if necessary, through a Perrnutit water softener on the off side.

Other piping connects the-header tank to the boiler itself, the tank containing sufficient water to fill the coils in the boiler. This has a thermal output of 3,272,000 B.Th.U.' per hour, and features an automatic temperature-limiting control with two stage operation at 75°-150° C. superheat.

A B.E.N. mains-electric driven compressor, capable of delivering 10 c.f.m. at 70 p,s.i., is mounted centrally at the front of the trailer. Beneath the chassis is a 100-gal, fuel-oil tank containing sufficient fuel to run the boiler for up to 5 hr., should it not be possible to make a ready connection to a static bulk supply..

The central section of the roof may be detached for withdrawal of the boiler, and across the top run two -transverse ducts, one being an air intake and the other an exhaust channel. This arrangement avoids the provision of vertical stacks which might have caused difficulties in negotiating low arches. Apertures of the intake duct are at the side,, whereas the outlets of the exhaust channel are at the extreme ends of the top surface. This channel is bedded on asbestos.

To allow sufficient air to ventilate the body when the boiler is being operated, a panel on each side, measuring 6 ft. 6 in. by 3 ft., may be opened and held as a canopy or, in hot weather.

completely .detaclied: At the rear is a full7drop-tailboard and canvas -flan. On the off side,behind the boileris a work-bench and tool cabinet, whilst on the pear side is the electrical distri, bution panel with a warning bell. Two red warning lights arc fitted on the roof.

Two interior lamps are provided on the fixed portions of the roof, and there are also four Moyden half-drop Windows. Up to waist level the bodywork is all steel with exterior framework, whilst above it is of aluminium, a form of construction which tends to. offset the high centre of gravity of the boiler.

The steam outlet is of hore-and the blow-down artc.l wash-out connections 1 in. The "coil drain pipe has a hereof 11 in Beneath these connections is the 'safety valve, which emits downward to the ground.

The outfit may be expected to be irt use for continuous periOds, perhaps lasting into several weeks, when it goes into service. U.D. employ a fuel tanker to tow the trailer, so that it may be employed at coal-fired installations 'where oil is not available,

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Locations: London

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