| 摘要 |
PROBLEM TO BE SOLVED: To improve performance of a condenser arranged in overhead of a distillation column 5.SOLUTION: An overhead condenser 1 includes a plate fin-side heat exchanger having a core 2 configured by stacking in a predetermined direction, a plurality of first passages 21 through which steam pass and second passages 22 through which refrigerant pass. In the core, direction of the first passages is set to a direction crossing the center axis X of a distillation column, and passage sections of the first passages thereby shift from the cross section of the distillation column orthogonal to the center axis. |
