Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . AUTOMATIC INJECTOR. 52 ENGINEERING in fuel is the utilization of all the available exhauststeam for heating the feed water before it enters theboiler. Of course if the main engine is a condensingengine, the exhaust from that source is not directlyavailable, except by interposing a closed heaterbetween the cylinder and the condenser, or by using. METROPOLITAN INJECTOR, MODEL O. the water of condensation for feeding the can be clone with safety, provided a surface con-denser is used, bu
Twentieth century hand-book for steam engineers and electricians, with questions and answers .. . AUTOMATIC INJECTOR. 52 ENGINEERING in fuel is the utilization of all the available exhauststeam for heating the feed water before it enters theboiler. Of course if the main engine is a condensingengine, the exhaust from that source is not directlyavailable, except by interposing a closed heaterbetween the cylinder and the condenser, or by using. METROPOLITAN INJECTOR, MODEL O. the water of condensation for feeding the can be clone with safety, provided a surface con-denser is used, but with a jet condenser or an openheater in which the exhaust mingles with the water, itis advisable to have an oil separator to prevent the oilfrom getting into the boilers. BOILER SETTINGS AND APPURTENANCES ,:; Exhaust heaters are of two kinds, open and the open heater the exhaust steam mingles directlywith the water and a portion of it is condensed. Awell-designed open exhaust heater will raise the tem-perature of the water to verynearly the boiling point, 2120F. These heaters should beset so that the water will flowby gravity from them to thefeed pump In the closed typeof exhaust heaters, the exhauststeam and the water are keptseparate. In some styles thesteam passes through tubes,which are surrounded by water,while in others the water fillsthe tubes, which are in turnsurrounded by the steam. Ineither case the water in t
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