| 摘要 |
The present invention concerns a tubular heat exchanger (10) between a source of radiant heat located externally with respect to said tubular heat exchanger (10) and a heat-carrying fluid flowing inside the exchanger, the radiant heat coming from said source being concentrated on a longitudinal portion of the external surface of said tubular heat exchanger, comprising means (11) for reducing the temperature gradient along the cross section of the walls of the tubular heat exchanger. |
