| 摘要 |
A heat exchange tube for a heat exchanger is provided to obtain an optimum equilibrium point between a flow rate and a flow amount of EGR(Exhaust Gas Recirculation) gas passing through the heat exchange tube, thereby keeping high heat exchange efficiency in a path and limiting pressure loss to a minimum. A heat exchange tube(1) for a heat exchanger includes a fin structure(2) incorporated inside, wherein the fin structure has a sectional shape in an approximately rectangular channel type waveform with a curved surface formed with waveform corrugation by a predetermined wavelength in the lengthwise direction. When assuming a width of the channel shaped waveform is H and a wavelength of the waveform corrugation is L, a value of H/L is controlled in the range of 0.17-0.20. |
