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Problemas de control de procesos
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  Universidad Autónoma de Nuevo León Departamento de Ingeniería Química Ejemplos de Sistemas de Primer Orden Dr. Salvador Tututi Avila  Departamento de Ingeniería Química Universidad Autónoma de Nuevo León Problema1 Asaprocessengineer,youdecidetodevelopafirst-order+timedelaymodelofaprocessusingasteptest.Theprocessisinitiallyatsteadystate,withaninputflowrateof5   andanoutputof0.75   /  .Youmakeastepincreaseof0.5gpmat3:00p.m.anddonotobserveanychangesuntil3:07p.m.At3:20p.m.,thevalueoftheoutputis0.8   /  .Youbecomedistractedanddonothaveachancetolookattheoutputvariableagain,untilyouleaveforhappyhouratalocalwateringholeat6:30p.m.Younotethattheoutputhasceasedtochangeandhasachievedanewsteady-statevalueof0.85   /  .Whatarethevaluesoftheprocessparameters,withunits?Showyourwork. 2  Departamento de Ingeniería Química Universidad Autónoma de Nuevo León Problema2 The level in a tank responds as a first-order system with changes in the inlet flow. Given the following level versus time data that were gathered (Fig. P4–16) after the inlet flow was increased quickly from 1.5 to 4.8 gal/min, 3  Departamento de Ingeniería Química Universidad Autónoma de Nuevo León Problema2 4
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