Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Patent
1998-03-24
1999-09-21
Doerrler, William
Refrigeration
Processes
Congealing flowable material, e.g., ice making
62354, 202175, 1651091, 165DIG325, F25C 512, F28F 1312
Patent
active
059539240
ABSTRACT:
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.
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Ho I-Chien
Huang Hong Ding
Li Yao Tzu
Yundt, Jr. Albert
Doerrler William
Manus, Esq. Peter J.
Y. T. Li Engineering, Inc.
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