Storage system for fuels

A storage system for a fuel, the system comprising:

• a reservoir to store the fuel cryogenically, wherein a portion of the fuel exists as a boil-off gas in the reservoir with a first vapor quality;
• an absorption unit fluidly coupled to the reservoir, the absorption unit configured to receive a refrigerant and the boil-off gas and facilitate a mixing therebetween to form a liquid solution;
• a distillation unit fluidly coupled to the absorption unit to receive the liquid solution at a supplemented pressure, and configured to separate the fuel to a gaseous state from the liquid solution;
• and
• a cooling circuit fluidly coupled between the distillation unit and the reservoir, and configured to receive the fuel in the gaseous state from the distillation unit at the supplemented pressure and a supplemented temperature, and deliver the fuel to the reservoir at a pressure and a temperature respectively lower than the supplemented pressure and the supplemented temperature, and with a vapor quality lower than the first vapor quality.

A method for condensing a fuel, cryogenically stored in a reservoir, the method comprising:

• upon a presence of a portion of the fuel as a boil-off gas with a first vapor quality in the reservoir,
• extracting the boil-off gas to an absorption unit;
• mixing the boil-off gas with a refrigerant in the absorption unit to form a liquid solution;
• pressurizing the liquid solution to a supplemented pressure by a pump;
• separating the fuel into a gaseous state from the liquid solution, at a supplemented temperature, in a distillation unit;
• lowering the supplemented temperature and the supplemented pressure of the fuel in the gaseous state by a cooling circuit;
• and
• delivering the fuel to the reservoir at a pressure and a temperature respectively lower than the supplemented pressure and the supplemented temperature, and with a vapor quality lower than the first vapor quality.