| 摘要 |
The invention relates to a condensation exchanger (1) for heating of water and/or for production of sanitary hot water, providing, in parallel, a first inner coil (2) with plain surface, and a second outer coil (3), said second coil (3) being externally spirally wound with respect to said first coil (2), within said first (2) and second (3) coils independently circulating a thermal carrier fluid, said first coil (2) exchanging heat with combustion fumes mainly by radiation and convection, and said second coil (3) exchanging heat with the combustion fumes mainly by condensation, said exchanger being characterized in that said second coil has a plain surface, and in that an insulating septum (4) is provided, said septum (4) dividing said exchanger (1) in a first upper or combustion zone (1'), and in a second lower or condensation zone (1 "), said insulating septum (4) dividing said exchanger (1) in said two areas (1', 1") with a ratio set by the following formula 45% ≤ H1/L ≤ 60% wherein L is the height of the exchanger and Hi the height of the first zone (1'). |
