Cold storage, heating and ventilating on board ship (1911)
Walker, Sydney Ferris · New York : Van Nostrand · leaf 193
FIG. 29.—CIRCUL.\R ELECTRIC HEATER. FIG. 30. BATTERY FOR SAME. composed and partly by the fact that the substance is in apowder, or in loose grains. A loose powder, or loose contactbetween any two conductors, across which an electric currenthas to pass, always offers a considerable resistance over… … ■Wlif^PS^^^Si^ FIG. 31.—ISENTHAL FLOOR-HEATING APPARATUS. contact portions of a switch do not make good contact witheach other, heat is always hberated at the surfaces, and some-times arcs are formed with the attendant enormous heat. One form of this heating appliance is known as Kryptol.It is a…
Ships -- Heating and ventilation · Cold storage on shipboard
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