Patent ID: 7147048

Claim:
A shell-and-tube type heat exchanger provided with one annular conduit furnished with not less than two partitions concurrently serving as an expansion joint for introducing and discharging a shell side fluid and allowing the flow path for said shell side fluid to be separated into an inducing part and a discharging part, which partition is composed not less than four component members, wherein said annular conduit is possessed of the following characteristic features: (i) That said annular conduit is provided with one introducing and one discharging nozzle for said shell side fluid and said nozzles are possessed of a sectional area 1.1–5.0 times the sectional area of the pipe for introducing and discharging said shell side fluids at the connecting part adjoining the annular conduit; (ii) That a distributor provided in said shell is possessed of a plurality of rows of opening for passing the shell side fluid, the center angle of said rows of opening is in the range of 90–140°, and the ratio of the opening ratio of the part in the neighborhood of the partition to the opening ratio of the part of said rows of opening opposed to the nozzle is in the range of 0.9–0.1.