F - Mech Eng,Light,Heat,Weapons – 28 – D
Patent
F - Mech Eng,Light,Heat,Weapons
28
D
257/16, 257/7
F28D 1/00 (2006.01) F23L 15/02 (2006.01) F28D 3/00 (2006.01) F28D 7/00 (2006.01) F28D 17/00 (2006.01) F28D 19/00 (2006.01)
Patent
CA 1107717
ABSTRACT OF THE DISCLOSURE A heat exchanger for the heating or cooling of a liquid, in par- ticular of a suspension having a high content of solid particles is provided. The heat exchanger includes a container having an inlet for the liquid posi- tioned at one end or at one side of the container and an outlet for the liquid positioned one end of the container; at least one substantially horizontal heat exchange unit being rotatably mounted in the container and comprising two end chambers communicating through a plurality of pipes arranged in a generally annular configuration, the container hav- ing, below a horizontal plane through the rotational axis of the heat ex- change unit, a circular cylindrical shape to closely conform to the heat exchange unit; means for feeding a heat exchange fluid through the end cham- bers and the plurality of pipes; a central tube extending concentrically in relation to the rotational axis between the end chambers and being closed-off from them and from the container, the central tube having a dia- meter not less than 40% of the greatest distance between any two pipes of the heat exchange unit measured at right angles to the rotational axis; and the outlet from the container having a lower edge at a level lower than the uppermost portion of the central tube to maintain the uppermost portion above the free surface level of the liquid in the container. In this way a high relative velocity is obtained even between a viscous suspension and the heat exchanger wall, to provide high heat transfer. Moreover, it is easy to clean the heat transfer wall of deposits.
293572
Jp-Energy Oy
Marcus & Associates
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