Abstract: A complete unit for simultaneous production of warm air and microwave energy is ready for delivery. The device contains three transmitters with wave-guides (8) for microwave energy, power components (9) and a fan (10). The fan blows cooling air past the power components and transmitters. The heated air can be used for removal of the water, that the microwave transmitters vaporize. The device can easily be moved from one cavity to another. With three transmitters connected one on each phase a balanced load of the mains is achieved. An induction motor drives the fan.

Abstract: Microwave energy is used to dry air. Moist air is forced through an absorbing or adsorbing material and the material is regenerated by heat from one or more microwave transmitters. The drying material is placed in a magazine, the greater walls of which permit air to pass and at least one of the walls reflecting microwaves. A drying room placed adjacent the magazine contains at least one microwave transmitter. Moving bodies can be used to spread the waves over the magazine surface for even drying. Several combinations of the above components can be used together in several ways based upon the ground components.