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5402571 Method of making a heat exchanger
Applied Thermal Engineering Vol. 16, No. 1, pp. Ill XII, 1996 Elsevier Science Ltd Printed in Great Britain 1359-4311/96 $9.50 + .00
Pergamon
PatentsALERT This section contains abstracts of recently issued United States patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty and compiled in accordance with interest profiles developed by the Editors. forms ice crystals that selectively accumulate on the heat exchanger surface. Forces resulting from gravity and the interactions with the liquid of the thermal storage composition overcome the adhesion forces between at least a portion of the ice crystals and the heat exchanger surface, causing at least a portion of the ice crystals to separate from the heat exchanger surface. The nucleating surfactant inhibits ice crystal growth on the heat exchanger surface, the smaller resultant ice crystals have reduced contact area and reduced adhesive strength, thereby providing a reliable release from the heat exchanger surface to render low energy ice harvesting.
5402571 METHOD
OF MAKING EXCHANGER
A HEAT
Hosoya Kazuk; Kado Hirotak Sawa, JAPAN Assigned to Sanden Corporation A method of making a heat exchanger including header pipes, fiat tubes extending between the header pipes and fin units extending between the flat tubes. The header pipes include a plurality of holes on one side thereof for accepting the flat tubes. On the opposite side of the header pipes is at least one slit in which a partition plate is inserted. During the formation of the header pipe, a pair of projections are formed on the ends of the slit. After the partition plate is inserted into the header pipe, the projections are bent until they engage the partition plate thereby fixedly securing the partition plate within the header pipe.
5402653 REFRIGERATING APPARATUS PROVIDED WITH CHEMICAL TYPE REFRIGERATING UNIT AND COMPRESSION TYPE HEAT PUMP
5402650
Yanadori Michio Assigned to Hitachi Ltd
THERMAL STORAGE COMPOSITION FOR LOW ENERGY ICE HARVESTING, METHOD OF USING SAME
Ryugasaki,
JAPAN
A refrigerating apparatus according to the present invention is composed of the combination of a chemical type refrigerating unit and a compression type heat pump. The chemical type compression unit includes reactors each having a reaction material accommodated therein and the reactors are provided with heat exchangers of the compression type heat pump. Further, heat exchangers of the compression type heat pump are provided with the condenser of the chemical type refrigerating unit. Heat of condensation produced in the condenser is recovered by the heat exchangers of the compression type heat pump and the heat exchangers of the reactors are selectively switched so that they are heated or cooled by the compression type heat pump.
Stewart William Olathe, KS, UNITED STATES Assigned to The Curators of the University of Missouri The disclosed thermal storage composition includes water, an electrolyte or a nonelectrolyte, and a nucleating surfactant. The nucleating surfactant reduces the surface tension of the thermal storage composition and simultaneously promotes nucleation sites within the thermal storage composition. The thermal storage composition is directed along at least one heat exchanger surface cooled by a refrigerant. The thermal storage composition III
Pergamon
PatentsALERT This section contains abstracts of recently issued United States patents and published patent applications filed from over 30 countries under the Patent Cooperation Treaty and compiled in accordance with interest profiles developed by the Editors. forms ice crystals that selectively accumulate on the heat exchanger surface. Forces resulting from gravity and the interactions with the liquid of the thermal storage composition overcome the adhesion forces between at least a portion of the ice crystals and the heat exchanger surface, causing at least a portion of the ice crystals to separate from the heat exchanger surface. The nucleating surfactant inhibits ice crystal growth on the heat exchanger surface, the smaller resultant ice crystals have reduced contact area and reduced adhesive strength, thereby providing a reliable release from the heat exchanger surface to render low energy ice harvesting.
5402571 METHOD
OF MAKING EXCHANGER
A HEAT
Hosoya Kazuk; Kado Hirotak Sawa, JAPAN Assigned to Sanden Corporation A method of making a heat exchanger including header pipes, fiat tubes extending between the header pipes and fin units extending between the flat tubes. The header pipes include a plurality of holes on one side thereof for accepting the flat tubes. On the opposite side of the header pipes is at least one slit in which a partition plate is inserted. During the formation of the header pipe, a pair of projections are formed on the ends of the slit. After the partition plate is inserted into the header pipe, the projections are bent until they engage the partition plate thereby fixedly securing the partition plate within the header pipe.
5402653 REFRIGERATING APPARATUS PROVIDED WITH CHEMICAL TYPE REFRIGERATING UNIT AND COMPRESSION TYPE HEAT PUMP
5402650
Yanadori Michio Assigned to Hitachi Ltd
THERMAL STORAGE COMPOSITION FOR LOW ENERGY ICE HARVESTING, METHOD OF USING SAME
Ryugasaki,
JAPAN
A refrigerating apparatus according to the present invention is composed of the combination of a chemical type refrigerating unit and a compression type heat pump. The chemical type compression unit includes reactors each having a reaction material accommodated therein and the reactors are provided with heat exchangers of the compression type heat pump. Further, heat exchangers of the compression type heat pump are provided with the condenser of the chemical type refrigerating unit. Heat of condensation produced in the condenser is recovered by the heat exchangers of the compression type heat pump and the heat exchangers of the reactors are selectively switched so that they are heated or cooled by the compression type heat pump.
Stewart William Olathe, KS, UNITED STATES Assigned to The Curators of the University of Missouri The disclosed thermal storage composition includes water, an electrolyte or a nonelectrolyte, and a nucleating surfactant. The nucleating surfactant reduces the surface tension of the thermal storage composition and simultaneously promotes nucleation sites within the thermal storage composition. The thermal storage composition is directed along at least one heat exchanger surface cooled by a refrigerant. The thermal storage composition III