Shell and coil heat exchanger

Details Shell and coil heat exchanger Shell and coil heat exchanger

1992-02-18

1993-07-20

Davis, Jr., Albert W.

Heat exchange

Three non-communicating fluids

165160, 165163, 622386, F28D 704

Patent

active

052285057

ABSTRACT:
The heat exchanger is made up of a shell having a coaxial tubular outer and inner wall with end plates attached thereto to enclose a tubular shell cavity provided with an inlet and outlet for a first fluid. Within the shell cavity is a spiral coil of tubing through which flows a second fluid. The coil is wound helically about the axis of the shell and sized to fit the inner and outer walls with limited radial clearance. The coils are axially spaced from one another to define a spiral flow path within the shell cavity for the fluids to first flow. The radial and axial clearance establish a spiral flow path and an axial flow path which are relatively sized to cause the first fluid to travel in a spiral motion, thereby enhancing heat transfer between the first and second fluids.

REFERENCES:
patent: 2360408 (1944-10-01), Dunn et al.
patent: 2888251 (1959-05-01), Dalin
patent: 4402359 (1983-09-01), Carnaous et al.
patent: 4556103 (1985-12-01), Kuwa et al.

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