Handbook of mechanical and electrical cost data, giving shipping weights, capacities, outputs, and net prices of machines and apparatus, and detailed costs of installation, maintenance, depreciation and operation, together with many principles and data relating to engineering economics (1918)
Gillette, Halbert Powers, 1869-, Dana, Richard Turner, 1876-1928, joint author · New York, McGraw-Hill · leaf 423
Fig. 19. Ten hours per day, 310 days per year, 9,000 B.t.u., coal,50 per cent, load factor. … 400 t>oo ooo moo eoo taoo /boo eoo eoooToto/I/iPofPhnt Fig. 20. Ten hours per day, 310 days per year, 9,000 B.t.u., coal,25 per cent, load factor. STEAM POWER 401 Fig. 21. rrm— 1 %3a 0. < i£ ^ Z^ ~\ -\ L*^V^ r 55^ ^ ^^$$=»< 5 ^5iS^- ^^ L<**i^:^^3 ^—~^^~~ — = is <j ^v ^^ ■^■■--^^■~~^…
