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This post was last edited by *amingteda on 2017-9-11 at 15:10. Dear users, in order to help everyone learn the *ProII process simulation software better – so that beginners can gain knowledge and experienced users can refresh their skills – we are launching a series of lessons on the basics of ProII titled “Making Progress Every Day”. Since I primarily use Aspen Plus/Hysys in my work, I have not studied ProII software systematically; therefore, the knowledge I offer might be quite basic. I hope fellow users will provide valuable suggestions and opinions, and actively participate in the discussions. Multiple-choice question: 11. Which of the following statements about heat exchangers in PROII is correct? A. The Simple HX module is used to heat or cool a single fluid, or to exchange heat between two fluids; in other words, it handles simple heat balance calculations without considering the specific structure of the heat exchanger. B. The parameters of the simple HX model include: specifying the cold-side fluid and the hot-side fluid ； Specify the pressure drop of the cold-side fluid and the hot-side fluid ； Specify the thermodynamic models for the cold-side fluid and the hot-side fluid ； Specify the thermal state of the cold-side fluid or the hot-side fluid ； Specify the heat exchange mode of the heat exchanger (counterflow, co-current) and its structure (number of shell passes, number of tube passes) or the logarithmic mean temperature difference correction factor ； Zone Analysis. C. Rigorous HX performs heat balance calculations for single-phase, condensation, or evaporation processes in shell-and-tube heat exchangers; the calculation types include predictive and design-oriented ones. D. Predictive in rigorous HX: Given the heat exchange area and thermal resistance of the unit, the outlet temperatures of the cold and hot fluids as well as the heat load of the heat exchanger can be calculated ； Design type: Specify the heat load of the heat exchanger or the temperature of the hot/cold body, and calculate the heat exchange area of the heat exchanger based on the thermal resistance, or calculate the thermal resistance based on the heat exchange area. Reference answer: ABCD