. Electric railway journal . nomy. Reports indicate that motor-driven fanswhen used on cooling towers will consume from 5 per cent to 8 per cent of the power o£ the machine, dependingcn the weather conditions. The total power consumed inoperating condensers and .looling^ towers apears to run from12 per cent to 18 per cent of the power generated. Since the turbines should be supplied with clean, dryfcteam, an efficient oil and dfip separator between the re-t iprocating engines an$ the turbine is considered to bean absolute necessity. An advantage arising from the useof this oil separator will b
. Electric railway journal . nomy. Reports indicate that motor-driven fanswhen used on cooling towers will consume from 5 per cent to 8 per cent of the power o£ the machine, dependingcn the weather conditions. The total power consumed inoperating condensers and .looling^ towers apears to run from12 per cent to 18 per cent of the power generated. Since the turbines should be supplied with clean, dryfcteam, an efficient oil and dfip separator between the re-t iprocating engines an$ the turbine is considered to bean absolute necessity. An advantage arising from the useof this oil separator will be found in plants using surfacecondensers, since the condensed water being free from oilcan be used for the boiler supply, and this greatly minim-izes the amount of scale in the boilers. Costs Your committee has been able to obtain only fragmentaryinformation as to the cost of low-pressure turbines and theirinstallation. When installed as an adjunct to an old plant,as has been the case in most instances, the changes of pip-. Power Generation—Low Pressure Turbine with Condenserand Ventilation Ducts ing and general alterations of the plant often involve avery considerable expenditure. The turbine will range in-ost, say, from $35 to $40 per kw in the smaller sizes tofrom $15 to $18 per kw in the larger sizes, which, of course,in that case are understood to be generators. The com-plete installation, however, including all the auxiliary ma-chinery, condensers, cooling towers, etc., if necessary, andincluding changes in building and piping, may run the costup to from $80 to $100 pei* kw in the smaller sizes, although$40 to $50 would dodbtlegs cover the entire expense in thelarger sizes. The replies received by your committee from users of tur-bines indicate that exhaustive tests of economy are notavailable. It should be noted in connection with the following sta-tistics of the Philadelphia Rapid Transit plant that duringthe greater portion of; the day the turbines utilize onl
Size: 1359px × 1839px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
