Steam engine

Details Steam engine Steam engine

2005-05-19

2008-09-16

Nguyen, Hoang M (Department: 3748)

Power plants

Fluid within expansible chamber heated or cooled

C060S659000, C060S670000

Reexamination Certificate

active

07424802

ABSTRACT:
A steam engine has a pipe shaped fluid container, a heating and cooling devices respectively provided at a heating and cooling portions of the fluid container, and an output device connected to the fluid container, so that the output device is operated by the fluid pressure change in the fluid container, to generate an electric power. In such a steam engine, an inner radius “r1” of the cooling portion is made to almost equal to a depth “δ1” of thermal penetration, which is calculated by the following formula (1);δ1=2⁢a1ω(1)wherein, “a1” is a heat diffusivity of the working fluid at its low pressure, and “ω” is an angular frequency of the movement of the working fluid.

REFERENCES:
patent: 6976360 (2005-12-01), Yatsuzuka et al.
patent: 7073331 (2006-07-01), Oda et al.
patent: 7185491 (2007-03-01), Oda et al.
patent: 2004/0060294 (2004-04-01), Yatsuzuka et al.
patent: 58-057014 (1983-04-01), None
Office Action dated Feb. 9, 2007 in Chinese Application No. 2005-100727587 with English translation.

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