The application relates to the technical field of ship
engineering and
heat energy engineering, and discloses an energy-saving shell-and-tube heat exchange device for a ship, which comprises a base support, a
pipe cylinder, a
pipe opening, an end cover one, an end cover two and an energy-saving
slag removing mechanism, the energy-saving
slag removing mechanism comprises a floating energy-saving mechanism, a displacement rotating mechanism, a rotating stirring mechanism and a swing rocker mechanism, the floating energy-saving mechanism is arranged, the four-stage
buoyancy amplifying mechanism is formed by connecting the cylinder and the rotating piece through the float and the inclined push rod, the tiny wave displacement is converted into the
stroke of the straight push rod, a low-energy-consumption mode different from the traditional
energy consumption is realized, the rotating stirring mechanism is arranged, the strong shear turbulent flow is formed in the
pipe cylinder, the pipe wall boundary layer is
cut, compared with the traditional laminar flow condition, the shell side
convection heat transfer coefficient is improved by half, the energy-saving
slag removing mechanism is particularly suitable for high-
viscosity fluid, and the six energy-saving slag removing mechanisms are uniformly distributed and work cooperatively, the heat exchange dead zone is eliminated, local overheating or overcooling is avoided, and the
temperature difference utilization efficiency is improved.