MEMS closed chamber heat engine and electric generator

Details MEMS closed chamber heat engine and electric generator MEMS closed chamber heat engine and electric generator

2005-12-27

2005-12-27

Nguyen, Hoang (Department: 3748)

Power plants

Fluid within expansible chamber heated or cooled

Having means within the working chamber to effect the...

C060S512000, C060S515000, C060S508000

Reexamination Certificate

active

06978611

ABSTRACT:
A heat engine, preferably combined with an electric generator, and advantageously implemented using micro-electromechanical system (MEMS) technologies as an array of one or more individual heat engine/generators. The heat engine is based on a closed chamber containing a motive medium, preferably a gas; means for alternately enabling and disabling transfer of thermal energy from a heat source to the motive medium; and at least one movable side of the chamber that moves in response to thermally-induced expansion and contraction of the motive medium, thereby converting thermal energy to oscillating movement. The electrical generator is combined with the heat engine to utilize movement of the movable side to convert mechanical work to electrical energy, preferably using electrostatic interaction in a generator capacitor. Preferably at least one heat transfer side of the chamber is placed alternately into and out of contact with the heat source by a motion capacitor, thereby alternately enabling and disabling conductive transfer of heat to the motive medium.

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