Method and apparatus for converting thermal energy to mechanical

Details Method and apparatus for converting thermal energy to mechanical Method and apparatus for converting thermal energy to mechanical

1978-01-18

1979-10-09

Ostrager, Allen M.

Refrigeration

Processes

Compressing, condensing and evaporating

62402, 60671, F25B 1300

Patent

active

041701160

ABSTRACT:
A continuous method and closed cycle system for converting thermal energy to mechanical energy comprises vaporizing means, including an energy conversion tube comprising at least one nozzle section, for converting a liquid working fluid stream to a predominantly, by volume, vapor or an all vapor stream, turbine means operated by the stream for converting a portion of the vapor stream energy to mechanical shaft work; means for increasing the thermal and potential energy of the turbine exhaust stream and for condensing it to a substantially liquid stream; and means for recycling the liquid stream to the vaporizing means. The system has particular application to conventional refrigeration/heat pump cycles wherein the conventional throttling valve is replaced by a non-throttling nozzle and a turbine for capturing and using the work of expansion. Energy conversion tubes of the present system also find application in high flow rate, two phase flow applications, such as pressure vessel safety relief valves.

REFERENCES:
patent: 3934424 (1976-01-01), Goldsberry

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