Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 404
otwater is drawn from the top of the tank, cold water will replace it through the inlet aroundthe copper tube reducing the pressure, the diaphragm will buckle back thereby closingthe circuit, and only sufficient electricity is used to bring the temperature of the coldwater up to the predetermined… … Fig. 4,411.—Simplex electric immersion heater. The most common way of boiling water isto apply heat to the outside of the vessel in which it is contained. But as heat radiatesin all directions much of it is lost and only a part is usefully applied in heating the water.In other words when the…
Electrical engineering
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