Increased power in compressed-gas energy storage and recovery
First Claim
Patent Images
1. A method for energy storage and recovery, the method comprising:
- within a cylinder assembly, at least one of expanding or compressing gas between a first super-atmospheric pressure and a second super-atmospheric pressure larger than the first super-atmospheric pressure;
spraying heat-transfer fluid into the gas, the heat-transfer fluid exchanging heat with the gas during the at least one of expansion or compression to thermally condition the gas; and
at least one of (i) substantially adiabatically compressing gas from approximately atmospheric pressure to the first super-atmospheric pressure, or (ii) substantially adiabatically expanding gas from the first super-atmospheric pressure to approximately atmospheric pressure.
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Abstract
In various embodiments, energy is stored or recovered via super-atmospheric compression and/or expansion of gas in conjunction with substantially adiabatic compression and/or expansion from or to atmospheric pressure.
690 Citations
58 Claims
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1. A method for energy storage and recovery, the method comprising:
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within a cylinder assembly, at least one of expanding or compressing gas between a first super-atmospheric pressure and a second super-atmospheric pressure larger than the first super-atmospheric pressure; spraying heat-transfer fluid into the gas, the heat-transfer fluid exchanging heat with the gas during the at least one of expansion or compression to thermally condition the gas; and at least one of (i) substantially adiabatically compressing gas from approximately atmospheric pressure to the first super-atmospheric pressure, or (ii) substantially adiabatically expanding gas from the first super-atmospheric pressure to approximately atmospheric pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for energy storage and recovery, the method comprising:
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substantially adiabatically compressing gas from approximately atmospheric pressure to a first super-atmospheric pressure; within a cylinder assembly, compressing gas between the first super-atmospheric pressure and a second super-atmospheric pressure larger than the first super-atmospheric pressure; thermally conditioning the gas during the compression within the cylinder assembly; and thereafter, storing gas at a pressure approximately equal to or greater than the second super-atmospheric pressure in a reservoir. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for energy storage and recovery, the method comprising:
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substantially adiabatically compressing gas from approximately atmospheric pressure to a first super-atmospheric pressure; within a cylinder assembly, compressing gas between the first super-atmospheric pressure and a second super-atmospheric pressure larger than the first super-atmospheric pressure; thermally conditioning the gas during the compression within the cylinder assembly; thereafter, transferring the gas to a second cylinder assembly; and compressing the gas within the second cylinder assembly from approximately the second super-atmospheric pressure to a third super-atmospheric pressure larger than the second super-atmospheric pressure. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method for energy storage and recovery, the method comprising:
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within a cylinder assembly, expanding gas between a first super-atmospheric pressure and a second super-atmospheric pressure larger than the first super-atmospheric pressure; thermally conditioning the gas during the expansion within the cylinder assembly; substantially adiabatically expanding gas from the first super-atmospheric pressure to approximately atmospheric pressure; and prior to expanding gas within the cylinder assembly, (i) expanding the gas within a second cylinder assembly from a third super-atmospheric pressure larger than the second super-atmospheric pressure to approximately the second super-atmospheric pressure and (ii) transferring the gas to the cylinder assembly. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification