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Caption: Dedication - Transportation Building Dedication Addresses
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must be supplied by the manufacturer. If heat be a neces- sary part of the process of manufacture and low pressure steam will answer the purpose, and moreover, if the quantity of heat and power are in the proper proportion the one to the other, the power can be obtained at small coat by reducing the steam from the boilers to the operating pressure by means of a non-condensing engine. In this case only interest, depreciation and repairs need be charged against the power (with some supervision), as it takes practically no more fuel to generate the steam, first passing through the engine, than it would if it is only required to do the heating. In other oases steam must be used at high pressures, as in steam hammers, and here the exhaust steam can be passed through low pressure turbines after being used in the hammers and a large quantity of power extracted from this waste product, the amount of course, depending upon the number, size and use of the hammers. In this case the cost of such power will be only the charges above enumerated, as there will be no additional fuel needed, provided that there is sufficient exhaust steam to furnish the necessary power. Under such circumstances as these It is impossible for a public service corporation to supply power at an attractive figure. There are, however, many factories where these conditions do not apply and where the owner would be glad to save the capital investment and charges of an expensive power plant, and the smaller the installation the more
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