Flow channel for a heat exchanger and heat exchanger with the same
A technology of heat exchanger and flow channel, applied in the field of heat exchanger
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[0030] Shown in Figure 1 is a schematic diagram of a flow channel 1. In the figure, it is a rectangular tube with a rectangular inlet cross section 2, two opposing flat sides F1, F2 and two narrow sides S1, S2. The flow channel 1 is passed by a medium such as exhaust gas in the direction indicated by the arrow P. On the lower flat side F2 are arranged vortex generators 3a, 3b, 4a, 4b arranged in the V-shaped direction, which generate vortex to increase the turbulence of the fluid, and at the same time prevent the occurrence of coke deposits in the exhaust gas flow. This diagram conforms to the prior art described at the beginning of this description. According to the prior art, the vortex generators 3a, 3b and 4a, 4b that are arranged in pairs in a V shape and widened in a diffuser shape along the flow direction are also called small fins.
[0031] Fig. 2a is a cross section of a flow channel 1 formed by a flat tube, where small fin pairs 5a, 5b and 6a, 6b are arranged on the uppe...
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