A minor issue with Aspen calculating saturated concentrations
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Gentlemen, when I am simulating the ammonia-water absorption cycle, I need to determine the saturated concentrations at constant temperature but different pressures. Is there any way to use sensitivity analysis to vary the pressure and thereby obtain a series of concentration values automatically? In Aspen, can concentration only be used as an independent variable and not as a dependent variable?
Sure, you can adjust the independent variables and dependent variables by yourself.
Thank you for the guidance! The problem has been solved. I simulated the gas-liquid equilibrium using a flash unit, with the outlet at a saturated state point; then I used transfer to pass the outlet stream to the desired stream, so that the concentration could be used as an independent variable.
I have another question for the responder: is it possible to analyze changes in exergy in sensitivity analysis? Do I need to edit the formulas myself? I remember that Aspen provides values for exergy, which can be displayed directly, but they are not available in sensitivity analysis. :(
Sorry, I haven’t seen any information on fire usage in Aspen