Abstract The apparatus includes a condenser (4), through which passes a duct (3") that carries, downward, the fumes from heating boiler (1) to bring them into a lower chamber (5). The fumes are mixed with ambient air in this chamber (5), a mixture that is then moved upward, going through the evaporator (4) by the action of a fan (9), placed contiguous to the collection chamber (10), placed above the evaporator (4). Together with the recovery of heat from the fumes there is a recovery of the heat contained in the ambient air. Besides the high efficiency that can be obtained with a limited capital investment, in the case of fumes the apparatus purifies them of the solid particles in suspension and even noxious gaseous components. The apparatus is used independently of the hot gas, for example, to heat water for domestic use. The air that is exhausted by the fan (9) after having given up its heat inside the evaporator (4) can be used for conditioning a closed area.
Apparatus for the recovery of heat from fumes in a heating system or from the ambient air, comprising a boiler with a burner for heating water, a flue for carrying fumes from the burner to a casing, the casing having a mixing chamber at its bottom and a collection chamber at its top and an evaporator between said mixing and collection chambers, a suction fan for removing gas from said collection chamber, said flue discharging said fumes into said mixing chamber, means to admit ambient air into said mixing chamber, a closed expansion-compression refrigeration cycle in heat exchange with said water and including said evaporator, the refrigerant in said closed refrigeration cycle passing downwardly through said evaporator in countercurrent with said fumes rising from said mixing chamber through said evaporator, and a heat exchanger through which said refrigerant passes to warm said ambient air as said ambient air enters said mixing chamber.
Claim 2
Dependent Claim
152 words
Apparatus for the recovery of heat from fumes in a heating system or from the ambient air, comprising a boiler with a burner for heating water, a flue for carrying fumes from the burner to a casing, the casing having a mixing chamber at its bottom and a collection chamber at its top and an evaporator between said mixing and collection chambers, a suction fan for removing gas from said collection chamber, said flue discharging said fumes into said mixing chamber, means to admit ambient air into said mixing chamber, a closed expansion-compression refrigeration cycle in heat exchange with said water and including said evaporator, the refrigerant in said closed refrigeration cycle passing downwardly through said evaporator in countercurrent with said fumes rising from said mixing chamber through said evaporator, and a heat exchanger through which said refrigerant passes to warm said ambient air as said ambient air enters said mixing chamber.
Claim 3
Dependent Claim
24 words
Apparatus as claimed in claim 1, said heat exchanger being disposed immediately upstream of said evaporator with respect to the flow of said refrigerant.