TUBE OF HEAT EXCHANGER

摘要

PURPOSE: A tube of a heat exchanger is provided to reduce the pressure loss of a working fluid by smoothly circulating the working fluid without any difficulty. CONSTITUTION: A tube(20) has an irregular port(23) and a flat port(24). A working fluid passes the irregular port and collides with a protrusion(22) to exchange heat with external air. The fluid passes the flat port and the fluid is changed into a liquid state through heat exchange with the external air to flow without any difficulty. Thus, the working fluid flows through the flat port and smoothly flows not to lose pressure. The flat port does not have protrusions so it is useful to make its sectional area smaller than one of the irregular port.