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An apparatus, thermal storage system and method for heat exchange using a tube-type heat exchanger. A rod or rods are propelled to moves over the inner surface of the tube. The moving rod is in contact with a first process liquid which is adjacent the inner surface as a falling film or by flooding t

An apparatus, thermal storage system and method for heat exchange using a tube-type heat exchanger. A rod or rods are propelled to moves over the inner surface of the tube. The moving rod is in contact with a first process liquid which is adjacent the inner surface as a falling film or by flooding the interior of the tube. The flooded mode is particularly useful where the tube is non-vertical or the heat exchanger is used to make an ice slurry for HVAC systems serving high-rise buildings. Multiple such rod and tube assemblies are operated simultaneously using a drive plate powered to execute an orbital motion in a plane generally orthogonal to the rods. In one form the plate is coupled via a crank to equiangularly space spaced rods in each tube. This form of orbital drive allows the use of a device to develop an auxiliary radial force, such as spring mounts extending between a central, rotating shaft mounted in each tube and the rod or rods for that tube. This auxiliary radial force supplements the centrifugal force to produce a self-alignment of the rods in a tube-parallel orientation, even when they are driven by a single drive plate positioned at one end of the tubes. Without a spring loading, the rods are preferably mounted to be movable radially, for example suspended through holes in, and driven by, a plate to executes an orbital motion or at recesses in the rod in radially directed slots in an arm rotated by a tube-mounted crank. For freezer applications, a tubular jacket surrounds the tube to form an annular thermosyphon region for a boiling refrigerant. In a thermal storage system using such exchangers, a movable warm water return nozzle return nozzle melts a floating ice mass uniformly.

대표청구항 ▼

[ We claim:] [1.] An apparatus for freezing or chilling a liquid comprisinga stationary heat transfer tube formed of a material with a high heat transfer property, adapted to receive a liquid to be frozen or chilled within said heat transfer tube with the liquid at its inner surface,refrigeration me

[ We claim:] [1.] An apparatus for freezing or chilling a liquid comprisinga stationary heat transfer tube formed of a material with a high heat transfer property, adapted to receive a liquid to be frozen or chilled within said heat transfer tube with the liquid at its inner surface,refrigeration means for withdrawing heat from said liquid through said heat transfer tube,at least one whip rod disposed within said heat transfer tube, anda positive mechanical drive connected between and source of motive power and said at least one whip rod said positive mechanical drive causing said at least one whip rod to orbit over said inner surface to control the deposit of said frozen liquid on said inner surface.