Waste heat recovering device
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United States of America Patent
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-
Sep 2, 1986
Grant Date -
N/A
app pub date -
Jan 4, 1985
filing date -
Jan 5, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heat recovering device comprising an oil injection type screw expander having its output shaft connected to a load, such as a generator, an evaporator using waste heat as a heat source to evaporate a working medium so as to produce working medium vapor to be fed to the expander, a condenser for condensing the working medium vapor discharged from the expander, a working medium circulating pump for circulating the working medium within a system comprised of the condenser, evaporator and expander, an oil circulating pump for feeding oil to the expander, and a heater for heating oil to be fed to the expander to a higher temperature than the working medium vapor temperature. The device is characterized in that the heated oil is injected into the expander in such a manner that the working medium vapor and the heated oil come in direct contact with each other in the expander, thereby superheating the working medium vapor.
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