Process Dynamics And Control, 4e
16th Edition
ISBN: 9781119385561
Author: Seborg, Dale E.
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Question
Chapter 6, Problem 6.17E
Interpretation Introduction
Interpretation:
The value of maximum variation at the outlet temperature should be determined. Refer to the given transfer function equation:
Concept introduction:
A transfer function model characterizes the dynamic relationship of two process variables:
- A dependent variable (or output variable).
- An independent variable (or input variable).
Transfer function models are only directly applicable to processes that exhibit linear dynamic behavior, such as a process that can be modeled by a linear ODE. If the process is nonlinear, a transfer function can provide an approximate linear model.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A biofilm consists of living cells immobilized in a gelatinous matrix. A toxic organic solute (species A) diffuses into the biofilm and is degraded to harmless products by the cells within the biofilm. We want to treat 0.2 m3 per hour of wastewater containing 0.14 mole/m of the toxic substance phenol using a system consisting of biofilms on rotating disk as shown below.
thickness of the biofilm is 1 mm and we are interested to reduce the phenol concentration in the outlet stream to 0.025 mole/m3. The rate of disappearance of phenol (species A) within the biofilm is described by the following equation
rA = - KICA Where k1 = 0.0024 s-1
The diffusivity of phenol in the biofilm at the process temperature of 25°C is 2.0x10 10 m2/s. Phenol is equally soluble in both water and the biofilm.
1. The concentration of A in the biofilm is give by Ca = Bisinh(mz) + Bzcosh(mz), the numerical value of m is.
2. Use m = 3 mm^-1, determine the numerical values with units for B1 and B2 with the unit of…
use the integral method if you can, thank you!
2. A single-effect evaporator is concentrating a feed solution of organic colloids from 5 to 50 wt
%. The solution has a negligible boiling point elevation. The heat capacity of the feed is cp
.
4.06 kJ/kg K and the feed enters at 15.6 °C. Saturated steam at 101.32 kPa is available for
heating, and the pressure in the vapor space of the evaporator is 15.3 kPa. A total of 4536 kg/h
of water is to be evaporated. The overall heat-transfer coefficient is 1988 W/m². K. What is
the required surface area in m² and the steam consumption?
Chapter 6 Solutions
Process Dynamics And Control, 4e
Ch. 6 - Prob. 6.1ECh. 6 - Prob. 6.2ECh. 6 - Prob. 6.3ECh. 6 - Prob. 6.4ECh. 6 - Prob. 6.5ECh. 6 - Prob. 6.6ECh. 6 - Prob. 6.7ECh. 6 - Prob. 6.8ECh. 6 - Prob. 6.9ECh. 6 - Prob. 6.10E
Ch. 6 - Prob. 6.11ECh. 6 - Prob. 6.12ECh. 6 - Prob. 6.13ECh. 6 - Prob. 6.14ECh. 6 - Prob. 6.15ECh. 6 - Prob. 6.16ECh. 6 - Prob. 6.17ECh. 6 - Prob. 6.18ECh. 6 - Prob. 6.19ECh. 6 - Prob. 6.20ECh. 6 - Prob. 6.21ECh. 6 - Prob. 6.23ECh. 6 - Prob. 6.24ECh. 6 - The staged system model for a three-stage absorber...
Knowledge Booster
Similar questions
- A mixture with 4% n-pentane, 40% n-hexane, 50% n-heptane, and 6% n-octane is to be distilled at 14.7 lb/in² (1 atm.) with 98% of the hexane and 1% of the heptane recovered in the distillate. If the liquid feed is a saturated liquid (i.e., q = 1). Calculate i.) The product compositions, ii.) The top and bottom temperature iii.) Minimum reflux ratio (Rm), iv.) Minimum theoretical plates and v.) Actual plates when the reflux ratio is 2Rm. Table 1: Component boiling point and molar mass Component Boiling point n-C5 97°F n-C6 156.2°F n-C7 209.1°F n-C8 258.1°F Molar mass 72.2 86.2 100.2 114.2 Hint: Since 1% of heptane is specified to be recovered in the distillate, 99% of heptane is to be recovered in the bottom.arrow_forwardH.W 1. A plant wishes to dry a certain type of fiberboard. To determine drying characteristics, a sample of 0.3 × 0.3 m with edges sealed was suspended from a balance and exposed to a current of hot dry air. The initial moisture content was 75%. The sheet lost weight at the rate of 1 104 Kg/s unit the moisture content fell to 60%. It was established that the equilibrium moisture content was 10 %. The dry mass of the sample was 0.90 Kg. All moisture contents were on a wet basis. Determine the time for drying the sheets from 75% to 20% moisture under the same drying conditions?arrow_forward2.) A mixture with 4% n-pentane, 40% n-hexane, 50% n-heptane, and 6% n-octane is to be distilled at 14.7 lb/in² with 98% of the hexane and 1% of the heptane recovered in the distillate. If the feed is a saturated liquid (q = 1), the top and bottom temperature are 149°F and 212°F respectively, calculate i.) The product compositions, ii.) Minimum reflux ratio (Rm), iii.) Minimum theoretical plates and iv.) Actual plate when the reflux ratio is 2Rm.arrow_forward
- answer choices 3. A. 0.18, B. 0.44, C. 0.01, D. 2 4. A. 0.2, B. 01, C. 0.4, D. 0.065 5.A. 1.43, B. 5.72, C. 0.93, D. 2.86 6. A. 1.0, B. 4.0, . 2.0, D. 0.65 7.A. 15.5, B. 8.0, C. 11.0, D. 58.5arrow_forwardDescribe with the aid of a labelled diagram how to seperate i) Acetone-water Azeotrope using solvent extractive distillation ii)Acetone-Methano azeotrope using salt effective extractive distillationarrow_forwardH.W 1. A feed of 4535 kg/h of a 2.0 wt % salt solution at 311 K enters continuously a single-effect evaporator and is being concentrated to 3.0%. The evaporation is at atmospheric pressure and the area of the evaporator is 69.7m². Saturated steam at 383.2 K is supplied for heating. Since the solution is dilute, it can be assumed to have the same boiling point as water. The heat capacity of the feed can be taken as cp = 4.10 kJ/kg K. Calculate the amounts of vapor and liquid product, and the overall heat-transfer coefficient U?arrow_forward
- The switch in Fig.1 has been closed for a long time. It opens at t = Find i(t) for t > 0. 50 www 1.5 H m t=0 10 Ω 9A 0.arrow_forwarde a) 1) Indicate whether each statement below is True or False: Precipitates have a more regular structure than crystals. b) A protein will be more likely to precipitate when the surrounding pH is at its pl. c) Larger proteins are more likely to precipitate than smaller proteins. d) Precipitation nucleation typically follows a secondary nucleation mechanism. e) Precipitates in a CSTR are usually uniform in size. f) Crystallization nucleation usually follows a secondary nucleation mechanism. g) The most common scale-up method for precipitation and crystallization is constant P/V h) Evaporation is commonly carried out above atmospheric pressure. i) The boiling point of a solvent typically rises as the concentration of solute increases. j) Scale-up of evaporation units is usually carried out by increasing evaporator height. k) Unbound water is more difficult to remove than bound water when drying. 1) The most common convection dryer is a freeze dryer. m) Vacuum shelf dryers typically heat…arrow_forward5) Wet insulin crystals containing 32 g water per 100 g of dry insulin need to be dried in air to a moisture level of 5 g water per 100 g of dry insulin. For your convenience, a graph of water content of insulin vs. relative humidity and a psychrometric chart are provided below. a) Determine the percentage of bound and unbound water in the wet crystals before drying. b) Determine the relative humidity of the air to accomplish the drying to 5 g water/100 g dry solids. c) For drying with air at 20°C, what should be the moisture content of the air (g moisture/g dry air)? Water content (g/100 g dry solids) 40 30 20 10 Cefazolin sodium tPA 20 40 Insulin 60 Relative humidity (%) 80 100arrow_forward
- A power plant needs to evaporate 1500.0 lbm/h of water at 40.0 °F at 1 atm. Utility superheated steam at 1200 °F and 40 bar is available, but the steam cannot drop below 20 bar and 700 °F. Use the steam tables to determine the specific enthalpies of the four streams. The reference for the enthalpies should be water at the triple point. You may interpolate in Tables B6. and B7, and can also use external, automated sources. Determine the amount of superheated steam required to accomplish the evaporation for a superheated steam outlet of 700 °F and 20 bar. Assume no heat losses and use the steam tables to determine enthalpies.arrow_forwardRecitation 11 Problem 1 400 kg/min of steam enters a steam turbine at 300 °C and 80 bar through a 8.5-cm diameter line and exits at 100 °C and 10.0 bar through a 5.5-cm line. The exiting stream may be vapor, liquid, or "wet steam", a mist composed of saturated water vapor and entrained liquid droplets. Find how much power W (kW) is transferred from the turbine to the steam? The answer can be positive or negative. Neglect AE, but not AEK. What percentage (%) of the total power is due to kinetic energy changes?arrow_forwardA 30.0-g block of iron at 200.0°C is dropped into a liter of water in an insulated flask at 25.0°C and 1 atm. The specific enthalpy of iron is given by the expression Ĥ(J/g) = 17.3 T(°C).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami...Chemical EngineeringISBN:9781259696527Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark SwihartPublisher:McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind...Chemical EngineeringISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
Elements of Chemical Reaction Engineering (5th Ed...Chemical EngineeringISBN:9780133887518Author:H. Scott FoglerPublisher:Prentice Hall
Industrial Plastics: Theory and ApplicationsChemical EngineeringISBN:9781285061238Author:Lokensgard, ErikPublisher:Delmar Cengage Learning
Unit Operations of Chemical EngineeringChemical EngineeringISBN:9780072848236Author:Warren McCabe, Julian C. Smith, Peter HarriottPublisher:McGraw-Hill Companies, The
Introduction to Chemical Engineering Thermodynami...
Chemical Engineering
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind...
Chemical Engineering
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY
Elements of Chemical Reaction Engineering (5th Ed...
Chemical Engineering
ISBN:9780133887518
Author:H. Scott Fogler
Publisher:Prentice Hall
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:9781285061238
Author:Lokensgard, Erik
Publisher:Delmar Cengage Learning
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:9780072848236
Author:Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:McGraw-Hill Companies, The