Energy Cache, Inc.

Pasadena Power

William T Gross

Christian T Gregory

Braden Eric Hines

Denes L Zsolnay

Kurt E Jechel

James T Baker

Aaron D Fyke

Some embodiments relate to an energy storage and generation system, comprising a cable system having a first end portion located at a first elevation and a second end portion located at a second elevation, a plurality of mass carriers supported by the cable system, one or more motor generators coupled with the cable system and with an energy grid, a control system in communication with at least the one or more motor generators, a first mass pile area configured to store mass medium positioned at the first elevation, and a second mass pile area configured to store mass medium positioned at the second elevation that can be higher than the first elevation. The one or more motor generators can move the cable system in an energy storing state and be moved by the cable in an energy generating state. The system can store energy by transferring mass medium from the first mass pile area to the second mass pile area, and can generate energy by transferring mass medium from the second mass pile area to the first mass pile area.

Apparatuses and methods for energy storage

A Stirling cycle engine comprises a substantially sealed engine block that defines a working fluid space, a hot path and a cold path. A heat source and a heat sink are configured to keep the hot path and the cold path at different temperatures. The engine includes a valve chamber that is communication with the working fluid space, the hot path and the cold path. A valve is moveably positioned within the valve chamber between at least a first position and a second position. The valve defines a passage that, in the first position, places the working fluid space in communication with the hot path and, in the second position, places the working fluid space in communication with the cold path. A regenerator positioned within the passage.

Moveable regenerator for stirling engines

Growing community of inventors

Pasadena, CA, United States of America

William T Gross