Transportable device, system and method for providing a cooled, oxygen-containing gas flow

A method for providing a cooled, oxygen-containing gas flow for supply to a body of a human being via the respiratory tract in order to lower the body temperature, said method being carried out with a device which has a storage unit, comprising at least one fluid reservoir, and which has at least one heat exchanger and an open-loop and/or closed loop controller, wherein an oxygen-containing fluid is stored in the fluid reservoir, and a discharge flow of the oxygen-containing fluid is provided, wherein the discharge flow is cooled in the heat exchanger by transfer of heat to a cooling flow of a fluid stored in and provided by the storage unit, and wherein a cooled, oxygen-containing gas flow for supply to the body emerges from the heat exchanger;

• wherein the cooling flow is formed by a bypass flow of the oxygen-containing fluid stored in the fluid reservoir;
• wherein the fluid reservoir contains a deep-cooled, liquefied oxygen-containing fluid or a pressurized oxygen-rich fluid as the cooling flow;
• and
• wherein the cooling flow of the deep-cooled, liquefied oxygen-containing fluid or the pressurized oxygen-rich fluid is not cooled by external means before being provided to the heat exchanger.

A transportable device for providing a cooled, oxygen-containing gas flow for supply to a body of a human being via the respiratory tract in order to lower the body temperature, the transportable device comprising:

• a storage unit, which has at least one fluid reservoir;
• and
• at least one heat exchanger;
• wherein the storage unit is designed to store an oxygen-containing fluid in the fluid reservoir and to provide a discharge flow of the oxygen-containing fluid from the fluid reservoir;
• wherein the heat exchanger is designed to cool the provided discharge flow by transferring heat to a cooling flow of a stored fluid provided by the storage unit;
• wherein a cooled, oxygen-containing gas flow for supply to the body emerges from the heat exchanger;
• wherein at least one preheater for preheating the discharge flow is provided upstream from the heat exchanger in the direction of flow of the discharge flow, wherein the discharge flow is heated in the preheater from an exit temperature, upon emergence from the storage unit, to a temperature above the temperature of the cooling flow by heat transfer from the environment;
• and
• wherein, between the preheater and the heat exchanger, at least one further heat exchanger is provided for precooling the discharge flow by indirect heat transfer to the cooling flow.