Thermal power plants and heat exchangers for use therewith
OwnerYan P. Changinventor
Life of this patent
Estimating the term…
Abstract
A thermal power plant having multi-staged steam turbines and heat exchangers therebetween, each heat exchanger extracting heat from the supply to an upstream stage for adding heat to the supply of the next successive downstream stage; a portion of the supply to the last downstream stage being diverted through a heater for adding heat to the feedwater flow to a boiler. Additional heat exchangers may be provided between stages for utilizing the feedwater to cool the working steam. One form of heat exchanger is provided with a plurality of axially spaced annular chambers having vortex flow producing means adjacent the inner peripheries thereof; whereas another form of heat exchanger is provided with a helically finned interior chamber in fluid communication with upstream guide vanes for inducing vortex flow.
Claims14
A thermal power plant for reducing exhaust heat and increasing thermal efficiency, comprising:
- a source of working fluid;
- a plurality of interconnected sequentially arranged fluid motor stages;
- a supply conduit for supplying working fluid from said source to the inlet of the first of said stages;
- a conduit from the outlet of the first of said stages for supplying working fluid to the second of said stages;
- additional conduits from the outlet of the second of said stages and from the outlets of each subsequent downstream stage for separately supplying working fluid to the inlet of the next successive downstream stage;
- a plurality of heat exchangers located between said stages for separately extracting heat from the inlet of the immediate upstream stage and separately applying the same to the inlet of the next successive downstream stage;
- and
- each heat exchanger having at least a pair of inlets and at least a pair of outlets with one of said inlets and one of said outlets being in common fluid communication and in fluid communication, respectively, with the outlet of the immediate upstream stage and with the inlet of the next successive downstream stage, with the other of said inlets being in fluid communication with the inlet of the immediate upstream stage.
Dependencies are inferred from the claim text.