| 主权项 |
1. A device for continuously producing liquid air from outer air in atmospheric pressure, the device comprising:
a first container comprising: a first boundary having high thermal conductivity and a first opening; the first boundary confines a first volume and is configured to conduct heat from an inner side of the first boundary to an outer side thereof, thereby to cool inner air confineable in the first volume; the first opening is configured to couple the first volume with the outer air external to the first volume; the first opening is further configured to allow flow of outer air into the first volume; a filter, coupled to the first opening, configured to clean the outer air flowing into the first volume via the first opening from contaminants; the first container is configured to keep internal pressure of the inner air substantially not higher than the atmospheric pressure, without actively compressing the inner air; and a second container comprising a second volume configured to contain liquid nitrogen and to have the first container immersed in the liquid nitrogen for bringing the first container in thermal contact with the liquid nitrogen, thereby passively cooling the first container; wherein the device is configured to continuously produce the liquid air by passively cooling the inner air thereby passively condensing a portion of the inner air to yield the liquid air, and allowing flow of outer air into the first volume while maintaining a pressure of the inner air substantially equal to the atmospheric pressure. |
