An Electrical Method for the Measurement of the Flow of Water: Thesis for the Degree of Bachelor of Science in Electrical Engineering in the College ... of Illinois, 1916 (Classic Reprint) - Softcover

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Excerpt from An Electrical Method for the Measurement of the Flow of Water: Thesis for the Degree of Bachelor of Science in Electrical Engineering in the College of Engineering, University of Illinois, 1916

The object of the experiments discussed in this thesis is to establish a relation between the heat lost by an element and the velocity of the water in which it is submerged. Such a relation has been found for air. In measuring the quantity of air flow ing in a pipe, it is necessary to pass it through some form of heat ing element. This element may be a wire heated by an electric cur rent, or a coil of pipe through which hot water is allowed to flow. (see Figure No.1a). If the lattertype of element is used the heat lost by it is equal to Wo(t' where W0 is the weight of wa ter flowing through the heating coil per second, and t' and t are the initial and final temperatures. The heat gained by the air is equal to 2375 Wa(t2 t1) where 237 is the specific heat of air at constant pressure, W3 is the weight of air passing per second.

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