Heat exchanger in the relative flow of fluid downstream and upstream are generally two. Downstream, the maximum temperature difference between the two fluids at the entrance and along the heat transfer surface, gradually reducing to a minimum temperature at the exit. Reflux, the two fluids along the heat transfer surface temperature distribution is uniform. In the cold and hot fluid inlet and outlet temperature under certain conditions, when the two fluids are no phase change, the maximum temperature difference in the average upstream downstream minimum.
Upon completion of the same heat transfer (Heat exchanger)conditions, using counter-current can increase the average temperature difference, heat exchanger heat transfer area is reduced; if the heat transfer area of the same, using reflux heating or cooling fluid can reduce consumption. The former can save equipment costs, which can save operating costs, it is used in the design or production should maximize the use of the countercurrent heat exchanger.
More Information at Weihai Huanyu Chemical Machinery Heat Exchanger
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Sources from Temperature Problem of Heat Exchanger
Keywords: reactor, heat exchanger, pressure vessel
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