GB132825A - - Google Patents

Abstract

132,825. McMaster, A. A., and Mc- Master, E. April 22, 1918. Feed-water, heating.-In apparatus for heating feed-water, of the kind comprising a hot-well in association with a condenser and air-pump, and a heater supplied with exhaust steam which comes into direct contact with feed-water passing to the heater from the hot-well, the heater is arranged at a higher level than the pump so that the heated feed-water returns to the pump by gravity, and the hot-well communicates with an open tank at a lower level, the air pressure upon the open tank forcing the water up a pipe into the heater. The Figure shows the hot-well a communicating with an open tank b, from which a pipe d, fitted with a float-actuated valve e, leads to the heater c, into which the water is sprayed by a perforated pipe m and grids o, coming into contact with steam from a pipe g. The heated feed-water returns to the pump by a pipe k having a trap k<1> to prevent air or oil from passing to the pump. A spring-loaded valve p on the pump is connected to the condenser, which communicates by a pipe i with the upper part of the heater, so that the pressures in the pump and heater become equalized to facilitate the return of the water bv gravity. An overflow pipe l leads from the heater to the condenser.