Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 262
per sq. in. The work W performed is (P — P3) (V2 — Vy)ft.-lb. The total work for the entire stroke is therefore. W = Wi + W = (Pi - P3) Vi + (P - P3) (Vt - Vy) ft.-lb. Economy of Using Steam Expansively. The per cent gain in work obtained per unit vol- W - Wi lime or weight of steam used, from the… … Fig. 18. Section of Steam Engine Indicator.oretical mean effective pressure (m.e.p.) for the entire piston stroke when the initial pressure (Pi), back pressure (P3) and ratio of expansion f r = —2 J or cut off f — ) are given or assumed is as follows: Area CDEBA - Area GFBA m.e.p. = Pe = length A B…
Building · Heating · Ventilation
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