| 摘要 |
PROBLEM TO BE SOLVED: To prevent channelling from occurring by arranging at least two inner tubes where a fluid to be cooled flows between the inside of an outer tube and the outside of a cylindrical object while the cylindrical object that forms a concentric circle with the central position of a sectional circle in a vertical direction for the flow direction of the outer tube is in parallel with a flow direction. SOLUTION: A cylindrical object 1-3 that does not have a space part where a fluid passes are provided on a concentric circle with the central position of the sectional circle of an outer tube, and an inner tube, namely a heat transfer pipe, is arranged only between the outer tube and the cylindrical objects, thus preventing the difference in resistance from being generated. A mixing element 1-4 is filled into each heat transfer pipe to increase heat transfer efficiency by agitating passing fluid, and a conical projection 1-7 is mounted to plates 1-2 for connection so that it can be nearly in parallel with the inclination of a reducer 1-6, thus preventing channelling from occurring and hence performing efficient cooling for the cooling of a high-temperature, high-viscosity fluid. |
