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3 PSA dynamic model 25 experimental pressure drop across objects generating uncontrolled flow resistances in the PSA piping system, as shown in Fig. 3.2-2. The test method is described in detail in Appendix 10.5. Fig. 3.2-1 Experimental and simulated pressure profiles at the top of adsorber columns with minimised controlled flow resistances in the PSA piping system: (a) during the entire PSA half-cycle, (b) during the initial phase of the PSA half-cycle Subsequently, individual flow coefficients Cv of particular valve models representing controlled flow resistances in the PSA piping system were found analogously, by fitting of simulated pressure curves to corresponding experimental pressure curves measured at the top of two adsorbers columns, as presented in Fig. 3.2-3. Fig. 3.2-2 Experimental and simulated pressure drop resulting from uncontrolled flow resistances in the PSA piping system at different feed stream pressure Details of flow coefficients adjustment are presented in Appendix 10.6. Individual functions of applied valve models V, together with fitted Cv values representing the flow resistances in the piping system of considered PSA set-up, are listed in Tab. 3.2-1. 1.7510−5M(1−) 1.5010−3 1− 2 ( i) v −P= g i v2+ g 2 g (Eq. 3.2-2) z 2r 3 p i (2r ) 3 piPDF Image | Modelling and Simulation of Twin-Bed Pressure Swing Adsorption Plants
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