This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...Engineer of the Detroit Water-Works, the writer arranged a glass mercury gauge at such height that the maximum pressure would be within the compass of the tube. There being then a reservoir co.nected with the mains, it was the custom of the engineer to stop the "Rec, erches Hydra.liq.es," p. 50. t A..at., des Po.ts.t ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...Engineer of the Detroit Water-Works, the writer arranged a glass mercury gauge at such height that the maximum pressure would be within the compass of the tube. There being then a reservoir co.nected with the mains, it was the custom of the engineer to stop the "Rec, erches Hydra.liq.es," p. 50. t A..at., des Po.ts.t Cha.sstes, 1847., r. H..ry, pumps for an hour or two each night. At such times he would watch the gauge, and the mercury would be continually rising and falling, sweeping through 6 to 8 i.s., ordinarily, but every few minutes making an excursion of 12 ins.. or more, a change of pressure of 5 or 6 lbs. The authors state that these fluctuations often amou.ted to several inches, a.d attribute them to the action of the pumps. Doubtless, though pulsations common to all flowing water will be i.fluenced by other water waves, whether due to the pumps or other causes, and may be either increased or diminished. For some u.explained reason, instead of taking the readings directly from the Bazin tube, the authors used a separate gauge, con.ected to it by rubber pipes. Had the pressure been constant, possibly the rubber would have merely bee. diste.ded a.d the observations but little different from those taken on the tubes directly, as they should have bee., but the ever-varying pressures must have had an effect o. the elastic connecti.g pipes, how much can only be conjectured, but it seems probable that the erratic velocities recorded are largely due to these elastic pipes, and that this is the reason why the i.strument, which in the ha.ds of MM. Darcy a.d Bazin did such good work, with the authors, proved so utterly unreliable. Another cause of error may be the alignment of the tube. If the orifice of the first tube does.ot exactly face the curren...
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Add this copy of Some Detroit Hydraulic Experiments to cart. $64.56, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2011 by Nabu Press.
