This invention provides a hollow loop bearing special strengthened tube condenser including a shell, heat exchange tube, bearing unit between tubes, the heat exchange tube is mounted in the shell, the bearing unit mounted between and connected with the heat exchange tube with points or lines to be special heat transferring tube with not smooth walls: tubes of convergent-divergent, diamond fin, lateral veins or spiral scroll. A heat-transfer strengthening method for a condenser is to use the high axial flow channel void rate, large flow cross-section and extremely small resistance to vertical fluid to reduce the heat transfer temp difference loss of steam to cold flow to the minimum to increase the driving force of cold flow heat transfer to strengthen heat transfer of inner convection and outer condensation. |