Abstract: Device for removing moisture and/or another substance from ambient air or from a gas, the device being configured to operate alternately in an adsorption phase and a desorption phase. The device comprises a vessel comprising an entry and an exit which comprise valves allowing the exit and entry to be opened and closed and a body of adsorption material positioned inside the vessel dividing the inside of the vessel in an upstream region and a downstream region. The device further comprises a condenser loop comprising a condenser located outside the vessel, a branch conduit which extends from the vessel to the condenser and which allows a branch flow of air or gas to flow from the downstream region to the condenser, and a condenser return conduit which extends from the condenser to the vessel and which allows the branch flow to return from the condenser to the upstream region of the vessel.