Stacked type heat exchanger

Abstract

Abstract PURPOSE:To obtain the stacked type heat exchanger having a large heat exchanging capacity by a method wherein the flow speeds of both heat exchanging liquids are increased and both of the liquids are flowed opposingly along the whole of the flowing paths thereof. CONSTITUTION:The blade-tube side liquid enters from an inlet pipeline 4 and the stream thereof is branched before entering into the layer-type flowing paths 8. The flow directions of the liquids in each layer-type flow paths are turned twice by bulkheads 12, 13, thereafter, are joined together to discharge them through an outlet pipeline 5. On the other hand, cylinder side liquid enters from the inlet pipeline 6 into the layer-type flow path 9, exchanges the heat thereof with tube plate side liquid while turning the flow direction twice by the bulkheads 14, 15 in the manner of the opposing flow, thereafter, it is joined together and is discharged from the outlet pipeline 7. In this case, the flow speed of both liquids becomes substantially three times as compared with the conventional stacked type heat exchanger and, therefore, a large heat exchanging capacity may be obtained. In case of a single phase flowing, for example, the heat transfer rate is made proportional to the flow speed to the power of 0.8 generally in case of a turbulent flow, therefore, the heat transfer rate of about 2.4 times of the conventional stacking type heat exchanger may be obtained in both liquids. Further, a large temperature efficiency may be obtained because all heat exchanging flow paths are formed into meandering flow paths of counter-flow type.

Inventors

• 👤 Yasushi Izunaga
• 👤 康 伊豆永
• 👤 Shigeru Kimura
• 👤 茂 木村

Bibliographic Details