Bowden-Smith, Edward Cyril · New York, D. Van Nostrand Company · leaf 87
dence and observationhere set out are carefuUy weighed and analysed. It cannot be too emphatically stated that it is themechamcal efficiency which a power device maintains,and not that whicj| it can attain when first installed,that should be kept in view. There is no class of machinery in which an… … Vertkal Steam PrmiiNc Engine CHAPTEK IV COMMERCIAL EFFICIENCY To compare the commercial efficiency of a pumping plantto an ejector system, it is necessary to give a brief descrip-tion of what they consist. We have to consider thecapital cost, construction, supervision, and maintenance.For the…
Pumping machinery
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