Heat exchanger having channels for damping liquid motions

The invention relates to a heat exchanger (1) for indirect heat transfer between a first medium (M1) and a second medium (M2), comprising: a shell (2), which has a shell space (3) for accommodating a liquid phase (F1) of the first medium (M1), and at least one heat-exchanger block (4), which has first heat-transfer passages for accommodating the first medium (M1) and second heat-transfer passages for accommodating the second medium (M2), such that indirect heat can be transferred between the two media (M1, M2), wherein the at least one heat-exchanger block (4, 5) is arranged in the shell space (3) in such a way that the at least one heat-exchanger block can be surrounded with a liquid phase (F1) of the first medium (M1) located in the shell space (3). According to the invention, a plurality of cylindrical channels (10) extending parallel to each other for conducting the liquid phase of the first medium (M1) is provided in the shell space (3) laterally to the at least one heat-exchanger block (4).