The present invention relates to a module for a contactor stack, for use in air purification. In particular, the present invention relates to a CO.sub.2 removing module, a contactor stack comprising a plurality of said CO.sub.2 removing modules, a method of removing CO.sub.2 from air using the contactor stack, a method of retrofitting the contactor stack into a submarine atmospheric control system, and a submarine comprising the contactor stack. In one aspect, the present invention relates to a CO.sub.2 removing module, for use in a contactor stack, the module comprising: a first grooved plate and a second grooved plate, wherein one or more spaces between the inner faces of the first grooved plate and the second grooved plate define one or more first channels; a top plate to seal the top-most first channel; a bottom plate to seal the bottom-most first channel; and wherein the one or more first channels contain a CO.sub.2 removing material.

The present invention relates to a system comprising a plurality of air purification circuits, an air purification circuit for a system for purification of air, a method of removing CO.sub.2 from air using the system of the present invention, a method of retrofitting the system or circuit of the present invention into a submarine, and a submarine comprising the system or circuit of the present invention. In a specific aspect, the system comprising a plurality of air purification circuits, the system comprising: a common pollutant outlet, a common clean air outlet; and a common inlet; wherein each air purification circuit comprises an absorption/desorption comprising a solid or porous absorption media, wherein each circuit comprises one or more valves which allow fluid communication between the absorption/desorption tank and each one of the common inlet, the common pollutant outlet, and the common clean air outlet to be either opened or closed.

This application discloses a comfort adjustment method and a related apparatus. The method includes: obtaining environment information and user information that correspond to a first space, where the first space is a non-open space; determining, based on the environment information, the user information, and a thermal comfort representation indicator, a control indicator of at least one device corresponding to the first space; and controlling the at least one device based on the control indicator of the at least one device.

This application discloses a comfort adjustment method and a related apparatus. The method includes: obtaining environment information and user information that correspond to a first space, where the first space is a non-open space; determining, based on the environment information, the user information, and a thermal comfort representation indicator, a control indicator of at least one device corresponding to the first space; and controlling the at least one device based on the control indicator of the at least one device.

A submarine apparatus includes an internal bellows pipe that compresses and decompresses as the apparatus descends into and ascends within a water current. When the device is in a rising pressure process, water may condense inside a tube which may be collected in a tank. Water may also be condensed due to cold temperatures of the surrounding water and relative warmer air inside the AWS. The water may be used as a fresh source of water for drinking. Some embodiments include a generator assembly that generates electricity from a propellor move within the current. The electricity may be routed to powered components in the apparatus.

A submarine apparatus includes an internal bellows pipe that compresses and decompresses as the apparatus descends into and ascends within a water current. When the device is in a rising pressure process, water may condense inside a tube which may be collected in a tank. Water may also be condensed due to cold temperatures of the surrounding water and relative warmer air inside the AWS. The water may be used as a fresh source of water for drinking. Some embodiments include a generator assembly that generates electricity from a propellor move within the current. The electricity may be routed to powered components in the apparatus.

A hybrid aerial hydro drone includes a body with a plurality of hydraulic thrusters supported on an outer surface of the body and configured to propel the body in a marine environment. The drone also includes a plurality of rotor arms arranged on the body, each rotor arm comprising a rotor system configured to propel the body in an aerial environment. Each rotor arm is deployably configured between a deployed position in which the rotor systems are extended from the body for aerial traversal, and a folded position in which the arms are hydrodynamically folded behind the body for marine traversal. The body also includes a controller, an energy source, a main ballast chamber and a pump with snorkel for operation of the drone.

A hybrid aerial hydro drone includes a body with a plurality of hydraulic thrusters supported on an outer surface of the body and configured to propel the body in a marine environment. The drone also includes a plurality of rotor arms arranged on the body, each rotor arm comprising a rotor system configured to propel the body in an aerial environment. Each rotor arm is deployably configured between a deployed position in which the rotor systems are extended from the body for aerial traversal, and a folded position in which the arms are hydrodynamically folded behind the body for marine traversal. The body also includes a controller, an energy source, a main ballast chamber and a pump with snorkel for operation of the drone.