Chicago : Engineering and Contracting Pub. Co. · leaf 559
Longitundinal Section of Sterling Reheater. air to 100 lbs., requiring 20 h. p. at 2% cts.per h. p., for 10 hours, would be $5. Heatingthe air from 50° to 350° expands the volumelike amount and saving 37 per cent of $5, or37 per cent, reducing the compressor duty a 544 ENGINEERING & CONTRACTING… … is brought onto the dipper. The weight othe boom is allowed to rest on the shovewhich it is digging. The excavator is made by the Union IroiWorks, Hoboken, N. J. Derrick Equipped With Shovel Attachment for Excavation. $1.85. The cost of power per day is therefore$5 —$1.85, or $3.15. We then have:…
Buildings
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
