Extracted text: 2.12 The liquid storage tank shown in Fig. E2.12 has two inlet streams with mass flow rates w, and w, and an exit stream with flow rate w3. The cylindrical tank is 2.5 m tall and 2 m in diam- eter. The liquid has a density of 800 kg/m², Normal operating procedure is to fill the tank until the liquid level reaches a nom- inal value of 1.75 m using constant flow rates: w, = 120 kg/min, w2 = 100 kg/min, and w; = 200 kg/min. At that point, inlet concentra- - ΔΗ, and %3D %3D w2 w1 polant out 9c, Te 94 Product FA, CB, CC. T, q W3 Figure E2.12
Extracted text: washout and the tion rate. The para now rate w, is adjusted so that the level remains constant. However, on this particular day, corrosion of the tank has opened up a hole in the wall at a height of 1 m, producing a leak whose volumetric flow rate q4 (m³/min) can be approximated by and YxIs = 0.5 g/g X = 2.25 g/L, S = 2.15 In medical a delivery are (i) to the patient's body centration profile the drug over time order to derive a 94=0.025 Vh –1 where h is height in meters. (a) If the tank was initially empty, how long did it take for the liquid level to reach the corrosion point? (b) If mass flow rates w,, w,, and w, are kept constant indefi- nitely, will the tank eventually overflow? Justify your answer. assume that the ra is proportional to concentration dri