. The street railway review . y the contract as written. Power House Management/ Mr. G. M. »-ll: rower house maiiagcinent is getting thebest results in the way of power output at the lowest cost. To ac-complish this it is necessary that a systematic record be kept of allexpenses and of the output of power, for it is mainly by carefulcomparison of such figures that costs can he reduced and outputincreased for the same outlay. In scanning the record of expenses,it would not be sufficient to consider prices in the abstract, materialmust also be taken account of; for example, a high grade c
. The street railway review . y the contract as written. Power House Management/ Mr. G. M. »-ll: rower house maiiagcinent is getting thebest results in the way of power output at the lowest cost. To ac-complish this it is necessary that a systematic record be kept of allexpenses and of the output of power, for it is mainly by carefulcomparison of such figures that costs can he reduced and outputincreased for the same outlay. In scanning the record of expenses,it would not be sufficient to consider prices in the abstract, materialmust also be taken account of; for example, a high grade cylinderoil at 6s cents a gallon would undoubtedly be cheaper for manypurposes than a poor grade at 35 cents. Again, it is often pooreconomy to be too careful about the amount of supplies used;the wear and tear on the machinery by use of insufficient suppliesmay far exceed the saving in supplies. For the best results the plant should be designed with tlic objectof economy and efficiency in view; boilers, engines, pumps, etc.,. FIG. 1—■Fireman went to sleep. He was discharged. should be chosen with particular reference to the conditions underwhich they will work, and everything should be so installed that itis capable of being easily repaired; that is, there should be workingspace around all apparatus, and pipe lines, valves, etc., should beeasy of access. All large power houses are equipped with cranes;the smaller plants are not always so equipped, but they should be,and if a crane is not part of the original installation it should beadded. It is generally assumed that a low water rate condensing plant ismore economical than a non-condensing one where the rate ishigher, but such is not always the case. If all the heat in the ex-haust steam can be made use of, then relatively inefficient but lowcost engines would, when interest and depreciation as well as thecoal pile are considered, be the cheapest to install and steam from the boilers is eventually discarded as
Size: 1582px × 1579px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
