Abstract: A method and a device for manufacturing microstructured metal foils for heat transfer reactors. The microstructures in the metal foils are produced using an ECM/PECM dipping process.

Abstract: A device for continuously humidifying and dehumidifying feed air for a manufacturing process or a ventilation and air conditioning installation includes a membrane contactor having a membrane, the feed air being passed along one side of the membrane and a hygroscopic liquid being passed along another side of the membrane. A regenerator is provided for lowering the water content of the hygroscopic liquid. A metering device is provided for adding water to increase the water content of the hygroscopic liquid. A control device is connected to the metering device and to the regenerator, the control device being configured to control the water content of the hygroscopic liquid and enable a switching between humidification and dehumidification of the feed air as a function of the water vapor partial pressure difference between the feed air and the hygroscopic liquid.

Abstract: The invention relates to a device for continuously humidifying and dehumidifying additional air from manufacturing processes and ventilating and air conditioning systems. The inventive device is characterized by a membrane contactor (1) comprising a membrane. The additional air can be guided along one side of the membrane and a hygroscopic fluid can be guided along the other side of the membrane. A dosing device (22) is also provided in order to add water so that the water content of the hygroscopic fluid can be increased, in addition to a regenerator (7) enabling the water content of the hygroscopic fluid to be lowered. A control device connected to the dosing device (22) and the regenerator (7) controls the water content of the hygroscopic fluid in such a way that it is possible to switch between humidification and dehumidification irrespective of the partial pressure difference between the additional air and the hygroscopic fluid.

Abstract: The invention relates to a method and to an apparatus for continuously removing metabolically produced carbon dioxide from respired air, such as the air found in life support systems or cabin circulating systems, using two sets of hollow fibers disposed in a flowing, carbon dioxide-selective liquid membrane. The carbon dioxide-containing respired air flows through the first set of hollow fibers and the second set of hollow fibers serves to carry away the permeate stream.