Abstract: Combustion gas channels through which combustion gas (A) flowing in from a combustion gas inlet (17) passes are formed in first and second heat exchanger bodies (23) and (19) so as to be directed toward a combustion gas outlet (21) respectively. Liquid fuel (B) in which methanol and water have been mixed is supplied into a gap (51) between a distribution plate (47) and an upper plate (49) through fuel supply holes (57). The liquid fuel (B) is distributed and supplied to the whole of the first heat exchanger body (23) through a large number of holes in the distribution plate (47). In the first and second heat exchanger bodies (23) and (19), fuel channels (23a) and (19a) through which the liquid fuel (B) passes are formed so as to be directed vertically and separated from the combustion gas channels by partition plates, respectively. The liquid fuel (B) passing through the fuel channels (23a) and (19a) carries out heat exchange with the combustion gas. Thus, the liquid fuel (B) is vaporized.

Abstract: Combustion gas channels through which combustion gas (A) flowing in from a combustion gas inlet (17) passes are formed in first and second heat exchanger bodies (23) and (19) so as to be directed toward a combustion gas outlet (21) respectively. Liquid fuel (B) in which methanol and water have been mixed is supplied into a gap (51) between a distribution plate (47) and an upper plate (49) through fuel supply holes (57). The liquid fuel (B) is distributed and supplied to the whole of the first heat exchanger body (23) through a large number of holes in the distribution plate (47). In the first and second heat exchanger bodies (23) and (19), fuel channels (23a) and (19a) through which the liquid fuel (B) passes are formed so as to be directed vertically and separated from the combustion gas channels by partition plates, respectively. The liquid fuel (B) passing through the fuel channels (23a) and (19a) carries out heat exchange with the combustion gas. Thus, the liquid fuel (B) is vaporized.

Abstract: Combustion gas channels through which combustion gas (A) flowing in from a combustion gas inlet (17) passes are formed in first and second heat exchanger bodies (23) and (19) so as to be directed toward a combustion gas outlet (21) respectively. Liquid fuel (B) in which methanol and water have been mixed is supplied into a gap (51) between a distribution plate (47) and an upper plate (49) through fuel supply holes (57). The liquid fuel (B) is distributed and supplied to the whole of the first heat exchanger body (23) through a large number of holes in the distribution plate (47). In the first and second heat exchanger bodies (23) and (19), fuel channels (23a) and (19a) through which the liquid fuel (B) passes are formed so as to be directed vertically and separated from the combustion gas channels by partition plates, respectively. The liquid fuel (B) passing through the fuel channels (23a) and (19a) carries out heat exchange with the combustion gas. Thus, the liquid fuel (B) is vaporized.

Abstract: A method of manufacturing an aluminum heat exchanger comprising the steps of: forming inclined surfaces on a support plate including an aluminum core clad with a brazing material layer at least on its top surface, said inclined surfaces sloping downwardly toward an aperture in the support surface; inserting a water pipe having an outer wall made of aluminum into said aperture with said core held in contact with said water pipe; assembling said support plate and said water pipe so that, when heated, said brazing material layer is melted, and flows down toward and collects around said aperture wherein said water pipe contacts said support plate; and heating said support plate and said water pipe to melt the brazing material layer, whereby the parts to be joined can be brazed together.