Shell side gas phase inlet
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Nitrogen is heated using steam; the heat exchanger is of the BES type, with steam flowing through the tube side, entering from above and exiting from below. Nitrogen flows through the shell side; is it inlet at the top and outlet at the bottom, or inlet at the bottom and outlet at the top?
This post was last edited by ylb913 on 2016-12-12 at 20:55. Down then up. The density of the medium is high at high temperatures, and it is low at low temperatures. This is even more evident in the case of gases: hot air currents move upward automatically, while cold air currents move downward automatically. This should be common sense when it comes to the impact on weather conditions.
It is standard practice to take into account gas density on the upper floor; of course, you can choose an inlet and outlet on the side as well. There is no definite conclusion on this; the design of the heat exchanger needs to take into account the conditions in the upstream and downstream processes, with optimized design for different operating conditions.