Cold storage, heating and ventilating on board ship (1911)
Walker, Sydney Ferris · New York : Van Nostrand · leaf 203
are wrought iron rod. on which are strungporcelain tubes, so designed and fitted that a helical grooveextends from end to end. The iron wire for the resistancecoil is wound in a close spiral spring, and insulated copperleading wires are attached to both ends by twisted and solderedjoints. This coil… … fastened to the exterior part of the circuit. This constructiongives the greatest possible length of wire in the given space,and so disposes every portion of the large surface presentedthat a large quantity of air comes freely inio contact with it, LOW TEMPERATURE TUBULAR AIR HEATER. 195 and passes…
Ships -- Heating and ventilation · Cold storage on shipboard
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