File:The design of a hydro-electric plant at Ottawa, Illinois (1914) (14586228860).jpg

Identifier: designofhydroele00burn (find matches)
Title: The design of a hydro-electric plant at Ottawa, Illinois
Year: 1914 (1910s)
Authors: Burnett, William
Subjects: Hydroelectric power plants Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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ta book. Then 1060 x -34.-^5 e ^»45 ,000.00. The ice fender will be the protection to the dam v;hen the icebegins to break up in the s-^ring. This will also stop logs and othermatter that floats down the river. For driving the piling for this fenderit will cost according to the foregoing reference 310,000.00. The goverment requires that the navigation up this river shallnot be interfered v/ith therefore it will be necessary to build a lockto lift the boats. This lock v^ill be 00.ft long and large enough to pass the largest boat and is to be installed at a cost of $95,000.00. Tail-race. The cost of dredging the tail-race so that the v;ater will havesx:d?ficient velocity is a big item of expense. The river will hav to becleaned of silt and dirt that is aborit thee feet deep. In order thatduring flood conditions the water will not back up this dredging willhave to cover a nile of the bed. The cost of removing the dirt at 50/per cubic yard will be, 587,000 cubic yards at 50/s $263,500.00
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31. The Turbines. The six turbine units are to be 6500 horse-pov/er each drivinc onenain generator unit. They are the horizontal type running at 1^4 r.p.m.and having S1.2 ^ efficiency,at full gate. Each turbine unit is made upof six snail units opeaating on the sane sh-^t -^to. this is controlledby a Lombard governor having a rating of 60,000 foot pounds. The governorvrill keep the speed constant r.dth a variance of head from to 36 feet. A drav.dng of tvo of the small units that make up the main unit- canbe found on the next page. The total length of the six turbines vrhen theyare coupled in series is about 60 feet. The shaft is 14 inches in diameterand made from the best nictel steel. The inspection tub^c +^- -i-e shovmon the plate give, access to the bearings which are three in number.These bearings are fed by a high pressure oiling system,which keeps nev;oil alivays around the shaft. The Lombard governor has a shaft that runsthe ftdl lenrth of the turbines. This controls the gates

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