Systems and Methods for Improving Drivetrain Efficiency for Compressed Gas Energy Storage and Recovery Systems
a technology of compressed gas energy storage and recovery system, which is applied in the direction of electric storage system, machine/engine, mechanical apparatus, etc., can solve the problems of inadvertent brownout and blackout, burn expensive fuels, natural gas, etc., and achieves low specific-energy cost, long life, and good test results
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[0072]The various systems and methods described herein refer to multiple arrangements of pneumatic and hydraulic-pneumatic components, the components generally designated as follows: accumulators (A1, A2, . . . ); intensifiers (I1, I2, . . . ); hydraulic-hydraulic intensifiers (HI1); hydraulic motors (M), and directional valves (SW1, SW2, . . . ).
[0073]FIGS. 1A-1D depict the major pneumatic and hydraulic components for a compressed air energy storage and recovery system 100 using staged hydraulic conversion. FIGS. 1A-1D illustrate four time steps in a single full cycle. The system 100 includes two pneumatic-hydraulic accumulators 102 and two pneumatic-hydraulic intensifiers 104 paired with one double-acting hydraulic-hydraulic intensifier 106, coupled with a variable displacement hydraulic pump / motor 108. In particular, the system 100 includes two equally sized hydraulic-pneumatic accumulators 102, labeled A1 and A2, two hydraulic-pneumatic intensifiers 104, labeled I1 and I2, with ...
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