1 combined temperature/humidity sensor at air outlet,  2 temperature sensor at water inlet,  3 injection nozzle,  4 column,  5 display and control panel,  6 air chamber,  7 fan,  8 butterfly valve,  9 circulating pump,  10 tank with heater,  11 throttle valve,  12 supply tank,  13 flow rate sensor,  14 connecting hose,  15 connection for pressure measurement