A steam-heated evaporator used to concentrate a feed stream by evaporating water is shown in Fig. E8.14.
Question:
fraction of solute in the exit stream x is measured and controlled by adjusting the steam flow rate, S. The control valve is fail-open. Should the composition controller be direct-acting?
Transcribed Image Text:
Overhead D, xp = 0 Pressure Steam, S Feed xF, F Condensate, S AC Хт AT Product х, В Figure E8.14
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 36% (11 reviews)
First consider qualitatively how solute mass fraction x responds to a change in steam flow rate S ...View the full answer
Answered By
Niala Orodi
I am a competent and an experienced writer with impeccable research and analytical skills. I am capable of producing quality content promptly. My core specialty includes health and medical sciences, but I can competently handle a vast majority of disciplines.
5.00+
1+ Reviews
10+ Question Solved
Related Book For
Process Dynamics and Control
ISBN: 978-1119385561
4th edition
Authors: Dale E. Seborg, Thomas F. Edgar, Duncan A. Mellichamp, Francis J. Doyle
Question Posted:
Students also viewed these Physics questions
-
A liquid is concentrated by evaporating water in an evaporator. The available measurements and control valves are shown in Fig. E. During normal operation, the concentration controller output Pac is...
-
A process stream is heated using a shell and tube heat exchanger. The exit temperature is controlled by adjusting the steam control valve shown in figure. During an open-loop experimental test, the...
-
A process stream is heated using a shell and tube heat exchanger. The exit temperature is controlled by adjusting the steam control valve shown in Fig. E12.5. During an open-loop experimental test,...
-
Selling price Variable costs: Direct materials Direct labour Variable manufacturing overhead Total variable cost Contribution margin Contribution margin ratio Contribution margin per labour hour O...
-
What is the level of significance of a test of hypothesis?
-
Spence, Inc., a calendar year S corporation, generates an ordinary loss of $110,000 and makes a distribution of $140,000 to its sole shareholder, Storm Nelson. Nelson's stock basis at the beginning...
-
Late Flights Among the flights included in the sample of flights in Data Set 15 of Appendix B, 21% arrived late. Determine whether the given value is a statistic or a parameter. Data set name is...
-
Laser World reports net income of $650,000. Depreciation expense is $50,000, accounts receivable increases $11,000, and accounts payable decreases $30,000. Calculate net cash flows from operating...
-
Should Gary pay the invoice within the discount period or should he keep the $57,600 in the money market account for 20 days and pay at the end of the credit period? (Use 360 days in a year.) Gary...
-
Two dentists A and B make a survey of the state of the teeth of 200 children in a village. Dr. A selects a simple random sample of 20 children and counts the number of decayed teeth for each child,...
-
Consider the liquid storage system in Fig. E8.13. Suppose that q 1 must be kept constant, and, consequently, h 2 is to be controlled by adjusting q 2 . Suppose that the q 2 control valve is...
-
A hot liquid is cooled by cold water in a counter-current heat exchanger: shown in Fig. E8.15: Temperature T h2 is to be controlled by adjusting flow rate, w c . The temperature sensor/transmitter...
-
A sine-wave generator with 20-V peak output is applied across a series RLC circuit. At the resonant frequency of 2.0 kHz, the peak current is 50 mA; at 1.0 kHz, its 15 mA. Find R, L, and C.
-
Assume the first agent is endowed with 2 apples and 3 bananas. If the relative price of apples in terms of bananas P a / P b to be equal to 1, the consumption bundle will be (2A, 3B) in absence of...
-
1) Consider travelling waves in a waveguide of rectangular cross section. The width of the guide is g and height is h. Assume that the guide is in the x direction with height in the y direction and...
-
1 mod n. Let n = pq. This exercise shows that we can use the RSA even if gcd(a, n) + 1. Let m be a multiple of (n). Show that for a such that ged(a, n) # 1 mod n, am+1 a mod p and am+1 a mod q = 2....
-
For the following, find y' using logarithmic differentiation. 4 2 8(x +1) y = 8 - 3x xe
-
Given functions f(x) = x +1 and g(x) = x 1, find and simplify (if applied): a) f(a - 1) b) g(x + h) c) (fog)(x)
-
Consider the market for paint as described in Question 7.2. As before the world price for paint is $8. This question examines the effect of introducing a tariff. a. Create a spreadsheet as in...
-
Ex. (17): the vector field F = x i-zj + yz k is defined over the volume of the cuboid given by 0x a,0 y b, 0zc, enclosing the surface S. Evaluate the surface integral ff, F. ds?
-
Frequency response data for a process are tabulated below. These results were obtained by introducing a sinusoidal change in the controller output (under manual control) and recording the measured...
-
For the process in Exercise 14.5, the measurement is to be filtered using a noise filter with transfer function GF(s). Would you expect this change to result in better or worse control system...
-
The block diagram of a conventional feedback control system contains the following transfer functions: (a) Plot the Bode diagram for the open-loop transfer function. (b) For what values of K is the...
-
You will start your own service-based business! What is the service (be creative)? List two accounts under each of the accounting equation categories: Assets, Liabilities, Equity, Revenues, and...
-
Esther and Moses got engaged during December 2020 are happily anticipating their upcoming nuptials in December 2021. One of their friends informed them that they could choose the type of matrimonial...
-
Computer Assisted Audit Tools and Techniques: Imagine you're working as an auditor, and your assignment involves using computer - assisted audit tools to analyze a substantial dataset of financial...
Study smarter with the SolutionInn App