File:The Street railway journal (1903) (14575050768).jpg

Identifier: streetrailwayjo211903newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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d is of a simple nature. It consists of a number of feltstrainers, which catch the scum and oil. The strainers can betaken out of the filter one at a time, cleaned, and returned with-out interfering with the process of straining. The station at the present time will be equipped with four setsof Green economizers, having 480 tubes each. When completedthe station will have eight sets of economizers. The piping isso arranged that any one of the four economizers can be usedwith any one of the four batteries of boilers. ENGINES The plant is designed for four engines, two of v/hich arenow in course of construction. They are of the vertical marinetype, and are being built by the Union Iron Works, of SanFrancisco. They are triple expansion with 32-in., 52-in. and80-in. cylinders and 42-in. stroke. They are built for a workingpressure of 200 lbs., at a speed of 136 r. p. m. Their normalcapacity is 4080 hp each, but they are built for an overload of 584 STREET RAILWAY JOURNAL. (Vol. XXL No. i6.
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April i8, 1903.) STREET RAILWAY JOURNAL. 585 25 per cent, so that the entire output of the plant when com-pleted will be over 20,000 hp. It may be stated here that theseengines are the largest stationary engines that have ever beenbuilt or used on the Pacific Coast. CONDENSERS The condensers are known as the marine type surface con-densers. They are fitted up with 3034 ^-in. diameter tubes,and have a cooling surface of 7200 sq. ft. Arrangements aremade by means of a tap in the exhaust pipe so that they can beused as jet condensers. The air pump cylinder is 34 ins. indiameter, with a 12-in. stroke, and is designed sothat it can handle a large volume of water whenthe condenser is used as a jet condenser. Thewater used for condensing is pumped from thebay, through two 30-in. pipe lines, laid on a pierbuilt out into the bay. The suction pipe line isabout 400 ft. long. The water at the end of pierat low tide is 8 ft. deep. The pump is electricallydriven and is at the end of the pier. The d

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