. The Street railway journal . urbines. Bvaccepting tenders for the latter, it has re-duced the cost of the building of the powerhouse by over £2,000, due to the smallerspace required by the turbines; and it is ex-pected that there will also be a large reduc-tion in the operating expenses and thecharges for attendance and in other direc-tions. Only one of the boards turbines has beenerected, but its power is sufficient to generatecurrent for the whole system. Even whenthe two ordered are available, one will beheld as a reserve unit. The switchboard is the largest in NewZealand, and measures 47
. The Street railway journal . urbines. Bvaccepting tenders for the latter, it has re-duced the cost of the building of the powerhouse by over £2,000, due to the smallerspace required by the turbines; and it is ex-pected that there will also be a large reduc-tion in the operating expenses and thecharges for attendance and in other direc-tions. Only one of the boards turbines has beenerected, but its power is sufficient to generatecurrent for the whole system. Even whenthe two ordered are available, one will beheld as a reserve unit. The switchboard is the largest in NewZealand, and measures 47 ft. in length, withIt is made of black marble panels, with a sub-ust below a handsome clock are the a height of 6 of similar material,names of the present Christchurch Tramway Board. The boiler room contains three Babcock & Wilcox boilers,each capable of evaporating 6000 lbs. of water an hour and ofworking at a pressure of 150 lbs. to the square inch. Com-bined with them are superheaters. The waste gases from the. FRONT V I EW 1 IF ill E I: IW EE H< (USE, SHOWING COOLING TOWER AT KICJ IT -motor systemit many years, boilers are passed through a Greens economizer, which heatsthe feed water before it enters the boilers. Mechanical stokersof the chain-grate type are placed under each boiler. The coal bunkers have a capacity of 400 tons, and are filleddirect from the railway trucks, which are hauled Up an in-clined way b\ an electric winch, This allows a minimum olhandling of the coal ; and when the bunkers have to be filled 206 STREET RAILWAY JOURNAL. [Vol. XXVI. No. 6. it is necessary merely to haul up the trucks, open the truckdoors and shoot the coal into the bunkers. Sidings have beenprovided at the railway side for conveniently handling the fulland empty trucks. A 35-hp compound engine, directly con-nected to a dynamo, has been installed for supplying light tothe power house, car shed and offices. Condensation is ob-tained by a cooling tower 35 ft. high and about2
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
