Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
4th Edition
ISBN: 9781119285915
Author: Seborg
Publisher: WILEY
Question
Book Icon
Chapter 1, Problem 1.10E
Interpretation Introduction

(a)

Interpretation:

The manipulated variable in a thermostat controlled home heating system is to be identified.

Concept introduction:

A control system is a system which regulates or monitors the behavior or working of other devices/systems using control loops. It can be used to control single device or large industrial processes. There are two types of control system which can be used to control the processes. These are feedback control system and feedforward control system.

Controlled variables (CVs) are the process variables which can be controlled, and its desired value is known as the set point.

Manipulated variables (MVs) are the process variables which are adjusted by the controller to keep its value close to the set point.

Disturbance variables (DVs) are the process variable which affects the controlled variables, but they cannot be manipulated and are associated with any changes in the operating environment of the ongoing process.

Interpretation Introduction

(b)

Interpretation:

The controlled variable in a thermostat controlled home heating system is to be identified.

Concept introduction:

A control system is a system which regulates or monitors the behavior or working of other devices/systems using control loops. It can be used to control single device or large industrial processes. There are two types of control system which can be used to control the processes. These are feedback control system and feedforward control system.

Controlled variables (CVs) are the process variables which can be controlled, and its desired value is known as the set point.

Manipulated variables (MVs) are the process variables which are adjusted by the controller to keep its value close to the set point.

Disturbance variables (DVs) are the process variable which affects the controlled variables, but they cannot be manipulated and are associated with any changes in the operating environment of the ongoing process.

Interpretation Introduction

(c)

Interpretation:

The adjustment of the manipulated variable in a thermostat controlled home heating system is to be determined.

Concept introduction:

A control system is a system which regulates or monitors the behavior or working of other devices/systems using control loops. It can be used to control single device or large industrial processes. There are two types of control system which can be used to control the processes. These are feedback control system and feedforward control system.

Controlled variables (CVs) are the process variables which can be controlled, and its desired value is known as the set point.

Manipulated variables (MVs) are the process variables which are adjusted by the controller to keep its value close to the set point.

Disturbance variables (DVs) are the process variable which affects the controlled variables, but they cannot be manipulated and are associated with any changes in the operating environment of the ongoing process.

Interpretation Introduction

(d)

Interpretation:

One disturbance which is dependent on the time in a thermostat controlled home heating system is to be identified.

Concept introduction:

A control system is a system which regulates or monitors the behavior or working of other devices/systems using control loops. It can be used to control single device or large industrial processes. There are two types of control system which can be used to control the processes. These are feedback control system and feedforward control system.

Controlled variables (CVs) are the process variables which can be controlled, and its desired value is known as the set point.

Manipulated variables (MVs) are the process variables which are adjusted by the controller to keep its value close to the set point.

Disturbance variables (DVs) are the process variable which affects the controlled variables, but they cannot be manipulated and are associated with any changes in the operating environment of the ongoing process.

Blurred answer
Students have asked these similar questions
8. The thermal decomposition of nitric oxide at elevated temperatures 2NO → N₂+02 has been studied in a batch reactor where at temperatures below 2000K the rate expression that applies to low conversions is: r = kCm05 Co At high conversions, or when the initial mixture contains a high concentration of O2 the rate expression is given by: r = k' Cм0.5 C15C0,5 To explain these kinetics the following chain reaction mechanism has been proposed: Initiation: Propagation: 2NON₂O +0 k₂ E1=272.0 kJ/mol 0+ NO O₂+ N E₂-161.0 kJ/mol N+NO N₂+0 E3-1.4 kJ/mol K4 20+ MO₂+M E4=14.0 kJ/mol ks Termination: where M is any molecule capable of the energy transfer necessary to stabilize the oxygen molecule. Once appreciable amounts of O2 are present in the reaction mixture, the initiation reaction that is the primary source of atomic oxygen is no longer the first reaction. Instead, the following reaction begins to dominate the chain initiation process: Initiation (high O2): ks NO +0₂ NO₂+0 E5=198.0 kJ/mol a.…
2:41 2) If the number-average degree of polymerization for styrene obtained by the bulk polymerization at 25°C is 5,000, what would be the number-average degree of polymerization if conducted in a 10% solution in toluene (900g of toluene per 100 g of styrene) under otherwise identical conditions? State any assumptions that are needed. (see Table 2-4). Table 2-4 Representative Values of Chain-Transfer Constants Monomer Styrene Chain-Transfer Agent T (°C) C x 104 Styrene 25 bas 0.279 * 50 0.35-0.78 Polystyrene 50 1.9-16.6 Benzoyl peroxide 50 0.13 Toluene 60 0.125 Methyl methacrylate Methyl methacrylate 30 0.117 70 0.2 Poly(methyl methacrylate) 50 0.22-1000 Benzoyl peroxide 50 0.01 Toluene 40 0.170 3) 2 3) Methyl methacrylate is copolymerized with 2-methylbenzyl methacrylate (M₁) in 1,4- dioxane at 60°C using AIBN as the free-radical initiator. (a) Draw the repeating unit of poly(2-methylbenzyl methacrylate). (b) From the data given in the table below, estimate the reactivity ratios of…
A piston–cylinder device initially contains 0.6 m3 of saturated water vapor at 250 kPa. At this state, the piston is resting on a set of stops, and the mass of the piston is such  that a pressure of 300 kPa is required to move it. Heat is now slowly transferred to the steam until the volume becomes 1 m3. Use the data from the steam tables. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.   Determine the final temperature.   The final temperature is  ºC. Determine the work done during this process Determine the total heat transfer
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
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
Text book image
Elementary Principles of Chemical Processes, Bind...
Chemical Engineering
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY
Text book image
Elements of Chemical Reaction Engineering (5th Ed...
Chemical Engineering
ISBN:9780133887518
Author:H. Scott Fogler
Publisher:Prentice Hall
Text book image
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:9781119285915
Author:Seborg
Publisher:WILEY
Text book image
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:9781285061238
Author:Lokensgard, Erik
Publisher:Delmar Cengage Learning
Text book image
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:9780072848236
Author:Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:McGraw-Hill Companies, The