RECUPERATIVE AIR HEATER USING LIQUID COMBUSTIBLE WASTES AS FUEL Russian patent published in 2004 - IPC

FIELD: energy saving and resources saving power engineering. SUBSTANCE: proposed air heater works on combustible wastes, used motor oils for example; air heater includes burner unit secured to walls of central passage of heat exchanger by means of flange which has holes with branch pipes for supply of air to combustion chamber; mounted in combustion chamber at circular clearance relative to wall of central passage is plate with two concentric shells forming circular cavity between them which is communicated with air supply branch pipes at inlet and with central cavity at outlet. EFFECT: complete combustion of wastes; enhanced operational reliability; increased service life. 9 cl, 2 dwg