Liquid air power and storage

A method of storing and recovering energy, the method comprising:

• expanding a gaseous primary working fluid at an elevated temperature through a first turbine to form an exhaust gas stream and producing electricity with a generator driven by the first turbine;
• heating a secondary working fluid with heat from the exhaust gas stream to convert the secondary working fluid from a liquid phase to a gas phase;
• expanding the gas phase secondary working fluid through a second turbine to form an expanded gas phase secondary working fluid and producing electricity with a generator driven by the second turbine;
• splitting a stream of liquid air or liquid air components into at least a first portion and a second portion;
• downstream along the exhaust gas stream from heating the secondary working fluid with heat from the exhaust gas stream, transferring heat from the exhaust gas stream to the first portion of the liquid air or liquid air components to freeze carbon dioxide out of the exhaust gas stream and form a partially or completely gaseous stream of air or air components from the first portion of liquid air or liquid air components;
• combining the partially or completely gaseous stream of air or air components with the second portion of the liquid air or liquid air components to form a recombined stream of air or air components;
• transferring heat from the expanded gas phase secondary working fluid to the recombined stream of air or air components to condense the expanded gas phase secondary working fluid to liquid phase and to form a gaseous stream of air or air components from the recombined stream of air or air components;
• mixing a gaseous fuel and at least a portion of the gaseous stream of air or air components to form a mixture and combusting the mixture to form the gaseous primary working fluid at the elevated temperature.