水平な多分岐管への偏流に関する研究 : 第5報,長方形の管群における流れの特性

概要

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In the previous paper, we showed that the flow rate distribution into the branch tubes from the inlet header of a 2-tube pass multitube heat exchanger which has the tube bundle arranged in a rectangular shape is markedly different from that which has the tube bundle arranged in a square shape. In the present experiment, to clarify the mechanism which causes this difference, the flow pattern in the inlet, outlet and return header of the 2-tube pass multitube heat exchanger was visualized using aluminum powder as a tracer, and the pressure distribution on the bottom wall of the inlet header was measured. The results show that the flow rate distribution is closely related to the flow pattern in the inlet header. Also, the eddy generated in the return header is strong and contains air bubbles which are never discharged.
1995-09-25