System and method for carbon dioxide upgrade and energy storage using an ejector

A method to pressurize a source fluid, comprising:

• increasing the pressure of a working fluid with a pressurization device, from a first pressure at least equal to a triple point pressure of the working fluid to a second pressure above the triple point pressure of the working fluid and higher than the first pressure, the working fluid comprising carbon dioxide;
• heating the working fluid with a first heat exchanger until it is substantially one of a vapor and a supercritical fluid;
• supplying the heated working fluid as a motive fluid to a high-pressure motive inlet of an ejector;
• and
• increasing the pressure of the source fluid comprising carbon dioxide, from a third pressure below a triple point pressure of the source fluid to a fourth pressure, by supplying the source fluid to a low-pressure inlet of the ejector to combine with the motive fluid to form an output fluid at the fourth pressure, the fourth pressure at least equal to the triple point pressure of the source fluid;
• wherein the pressurization device is a liquid pump;
• wherein the second pressure is a pressure corresponding to a vapor-liquid equilibrium below an atmospheric ambient temperature;
• and
• wherein heating the working fluid comprises providing refrigeration to an external source.

A method to pressurize a source fluid, comprising:

• increasing the pressure of a working fluid with a pressurization device, from a first pressure at least equal to a triple point pressure of the working fluid to a second pressure above the triple point pressure of the working fluid and higher than the first pressure, the working fluid comprising carbon dioxide;
• heating the working fluid with a first heat exchanger until it is substantially one of a vapor and a supercritical fluid;
• supplying the heated working fluid as a motive fluid to a high-pressure motive inlet of an ejector;
• and
• increasing the pressure of the source fluid comprising carbon dioxide, from a third pressure below a triple point pressure of the source fluid to a fourth pressure, by supplying the source fluid to a low-pressure inlet of the ejector to combine with the motive fluid to form an output fluid at the fourth pressure, the fourth pressure at least equal to the triple point pressure of the source fluid;
• wherein the pressurization device is a liquid pump;
• and
• wherein the second pressure is a pressure corresponding to a vapor-liquid equilibrium proximate an atmospheric ambient temperature, and wherein heating the working fluid is accomplished by an ambient source.