METHOD AND SYSTEM FOR THE RECOVERY OF HEAT FROM PRODUCTS OF COMBUSTION

Method for the recovery of heat from products of combustion comprising the following steps: (i) increasing the velocity of the hot flue gases by feeding compressed air powered by a turbo charger/turbo compressor (6) to the fuel, in the burning stage; (ii) subject the fuel cum high pressure air to a step of burning (14) in an enclosure (8); (iii) adjusting the fuel burning rate vis-à-vis the quantity/pressure of air; (iv) producing and maintaining a small steady flame; (v) indirectly transferring a small part of the heat of combustion to a relatively colder external fluid (15) surrounding said burning enclosure; (vi) passing the products of combustion through a first heat exchanger (11); (vii) indirectly transferring heat by convection in said first heat exchanger (11) to the external fluid (15); (viii) passing the partly heat depleted flue gases coming out of said first heat exchanger (11) through a turbine (6b) said turbo charger/turbo compressor (6); (ix) indirectlytransferring further heat from said partly heat depleted flue gases in a second heat exchanger (12) to the external fluid (15).