Abstract: A gas sorption system for removal of moisture, carbon dioxide, ammonia, hydrogen sulfide, volatile organic compounds or mixtures thereof from air includes a main sorption unit; a main process air circuit arranged to conduct a main process airflow through a main sorption rotor in the main sorption unit; a main regeneration air circuit arranged to conduct a main regeneration airflow through the main sorption rotor in the main sorption unit; and a purge air circuit arranged to conduct a purge airflow through the main sorption rotor in the main sorption unit, the purge airflow being configured to flow through the main sorption rotor in the same direction as the main regeneration airflow. A pre-processing unit is connected to the main regeneration air circuit upstream of the main sorption unit and is arranged to heat and/or to dehumidify the main regeneration airflow upstream of the main sorption unit.

Abstract: The disclosure relates to an air treatment system (100) for providing treated air in a defined space (S) comprising a gas sorption device (10) with a gas sorption rotor (1); a process air circuit (2) arranged to conduct a process air flow through a process section (3) of the gas sorption rotor (1); a regeneration air circuit (4) arranged to conduct a regeneration air flow through a regeneration section (5) of the gas sorption rotor (1); and a control device (6) configured to determine that predetermined starting criteria are fulfilled; and control, in a cleaning mode, a flow of outdoor air (OA) to circumvent the process section (3) of the gas sorption rotor (1), and pass through the regeneration section (5) of the gas sorption rotor (1) before being exhausted. The disclosure further relates to a method for controlling an air treatment system (100) and a computer program for an air treatment system (100).

Abstract: The disclosure relates to a system (1) for controlling humidity in a defined space (2), the system (1) comprising: an active air conditioner (4) fluidly connected to the defined space (2); a control device (100) operably coupled to the active air conditioner (4); at least one hygrometer (6,14) arranged in the defined space (2) and operably coupled to the control device (100); a passive dehumidifier and humidifier (8) comprising hygroscopic material (10), which passive dehumidifier and humidifier (8) is configured to be accommodated in the defined space (2) and in contact with the air in the defined space (2). The control device (100) is configured to control the active air conditioner (4) for conditioning the air in the defined 10 space (2) to a dewpoint target value (CDPt) based on information from the first hygrometer (6), and in that the passive dehumidifier and humidifier (8) is configured to suppress fluctuations from the dewpoint target value (CDPt).

Abstract: A gas sorption system for removal of moisture, carbon dioxide, ammonia, hydrogen sulfide, volatile organic compounds or mixtures thereof from air includes a main sorption unit; a main process air circuit arranged to conduct a main process airflow through a main sorption rotor in the main sorption unit; a main regeneration air circuit arranged to conduct a main regeneration airflow through the main sorption rotor in the main sorption unit; and a purge air circuit arranged to conduct a purge airflow through the main sorption rotor in the main sorption unit, the purge airflow being configured to flow through the main sorption rotor in the same direction as the main regeneration airflow. A pre-processing unit is connected to the main regeneration air circuit upstream of the main sorption unit and is arranged to heat and/or to dehumidify the main regeneration airflow upstream of the main sorption unit.

Abstract: The invention relates to an air treatment element (1) for an air treatment unit (2), the air treatment element (1) comprising: a drum shaped rotor element (4), provided with a rotational axis (6); a first end surface (8) of the rotor element (4) having a first normal (N1), which is parallel to the rotational axis (6); a second end surface (10) of the rotor element (4) having a second normal (N2), which is parallel to the rotational axis (6); and a plurality of channels (12), which are disposed parallel to the rotational axis (6), and which channels (12) extend continuous from the first to the second end surface (8, 10) of the rotor element (4); wherein the air treatment element (1) further comprises: at least one air treatment substance (14, 18) arranged on walls (16) of the continuous channels (12), wherein the content of the at least one air treatment substance (14, 18) is arranged to increase or decrease in a direction from the first end surface (8) to the second end surface (10).