Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #10 Solutions
1. Consider a refrigerator that uses refrigerant-134a as its working fluid and operates on the ideal
vapor-compression refrigeration cycle
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #4 Solutions
Nitrogen gas flows through a well-insulated nozzle in which the outlet area is 20 times smaller than the
inlet area. The nitrogen gas enters
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #9 Solutions
An air standard cycle, called the dual cycle is executed in a closed piston-cylinder device and is
composed of 5 processes:
1 2 Isentropic (
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #2 Solutions
A piston cylinder device with a piston of cross sectional area = 250 2 contains 50 of water
initially at 200 . Assume the piston is friction
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #5 Solutions
A 25 L rigid tank is filled with saturated liquid water at 170C. A valve at the bottom of the tank is
opened, and liquid is slowly withdrawn
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #7 Solutions
A rigid tank contains 5 kg of water at 95C (State 1). Heat is added to the tank from a reservoir at 500C
until the water reaches 2.50 MPa an
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #3 Solutions
A piston cylinder device with a linear spring contains 200 of 2 . Initially the piston is against the
stops and the 2 is contained in a volu
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #6 Solutions
A refrigerator with a COPR of 2.4 and a power input of 650 W is to be used to cool 9 large containers of
strawberries, each containing 7 kg
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #1 Solutions
Freshwater and seawater flowing in parallel horizontal pipelines at 4 are connected to each other by
a double U-tube manometer, as shown bel
Department of Chemical & Materials Engineering
CHE 243: Engineering Thermodynamics
Written Assignment #8
Initially, an empty can with a volume of 6 liters rests in an environment at 20C (State 1). Now the can is
filled with saturated liquid R-134a at 2C f
ENGG 406 Study Hall 2 - Notes
If I didnt write for a slide it was because he just explained what was there and not if it
would be on the final or not.
Slide 4&5: Pre-final material
Slide 7: 16A Identify Acceptable(Green) and Unacceptable (Red) risks. In b
NAME:
ChE 464 Design I Final Exam
S Kresta and A deKlerk, December 2011
o 2 hours open textbook, programmable calculators allowed
0 Show any detailed work in the exam booklet.
0 You must complete the questions in the spaces provided, and hand in the quest
DESIGN CHE464 - FINAL EXAM (April 23, 2010)
Open textbook (2 hours)
Use good engineering judgement. Make reasonable assumptions where necessary.
Justify and document decisions.
Ql The following four questions are multiple choice. Select only one answe
ChE 464 Chemical Engineering Design I
Final Examination
December 14, 2010
OPEN TEXT
Problem 1 (25 Marks) Naphtha Stripping Column
The process ow diagram in Figure 1 shows the process for stabilizing product naphtha
after hydrotreating. Naphtha is a mixtur
Name: ChE 464 (F2012) Midterm exam
ChE 464 CHEMICAL ENGINEERING DESIGN 1
Open textbook with one binder of open notes, programmable calculators allowed
MIDTERM EXAM Total time: 50 minutes 10 October 2012, 13:00
The exam consists of short independent ques
ChE 464 Design I
MIDTERM EXAM
Friday, February 11, 2011; 13:00-13:50 (open book, programmable calculators allowed)
Let us start with an awesome technical story (which does not start with "long, long ago").
Background (you can skip this paragraph if you
ChE 464 Fall 2011: 1 of4 NAME:
ChE 464 Chemical Engineering Design I
Mid-Term Examination 50 minutes
Friday, October 7, 2011
OPEN TEXTBOOK, closed notes, programmable calculators permitted
General remarks:
Make reasonable assumptions where necessary. Just
Name: Ch E 464 Midterm (W2012)
ChE 464 CHEMICAL ENGINEERING DESIGN I
Open textbook with one binder of open notes, programmable calculators allowed
MIDTERM EXAM Total time: 50 minutes Feb 10, 2012, 13:00-13:50
Question 1 [35 marks]
You are provided with a
Che 314
Gauss Elimination
Nave Gauss
The basic strategy is to successively solve one
of the equations of the set for one of the
unknowns and to eliminate that variable from
the remaining equations by substitution.
The elimination of unknowns can be exte
DEPARTMENT OF CHEMICAL & MATERIALS ENGINEERING
CH E 374 Computational Methods in Engineering
Fall 2016
Class Examples
Solve the following problems by hand. When needed, use a calculator!
Determine the root of f ( x) x3 e0.5 x by:
a. Using the bisection me
CHE 374 Lec # 3
Introduction to MATLAB
MATLAB Basics
CHE 374 Computational Methods
in Engineering
INTRODUCTION TO MATLAB
Statements and Variables
Matrices
Graphics
Control of Flow
Scripts and Functions
2
MATLAB Interface Look & Feel
Why MATLAB
Combines n
CHE 374
Computational Methods in Engineering
Numbers
We distinguish between integer numbers
and real numbers
CHE 374 Computational Methods
in Engineering
Number representation, approximation, error
and error definitions
324
1.426
is an INTEGER number
is
Exawpq 2 m9 Exam/e 3/ (A)
MftW/ X WOW)?
3 f 7 (0) Calculate L1,L00 and the spectral radius for the matrix
A given by (331?)
1 0 0.306
A = 0 1 0.702
2 1 0
All: = ma$cfw_l1|+l0| +| '- 2|, IDI + N + Ill, 10-3061 + |0-702| + lol
= ma:13cfw_3, 2, 1.008 = 3
Fo
CHE 374: Solution of systems of linear equations
I TERA TIVE METHODS: Jacobi, Gauss Seidel and Successive Relaxation
Consider once more our matrix equation[A].r = 13. Write this in expanded
form as:
0|le +1.21 "I'mlnxn = bl
a2le + 22x: + ' " 2,135.: =
DEPARTMENT OF CHEMICAL & MATERIALS ENGINEERING
CH E 374 Computational Methods in Engineering
Fall 2016
Class Examples
Solve the following problems by hand. When needed, use a calculator!
Determine the root of f ( x=) x3 e0.5 x by:
a. Using the bisection m
CHE 374 Systems of non-linear equations
Module # 3, Part 3
ChE 374
Computational Methods in Engineering
Newton Raphson for 2D
Consider a system of two equations and two
unknowns
Systems of Non-Linear Equations
f1 ( x1 , x 2 ) = 0
f 2 ( x1 , x 2 ) = 0
New
CHE 374: Module #2: Solution of nonlinear equations
Part 1 Intro.
MODULE 2: Solution of nonlinear equations
An equation of the form
a ax 0
is linear equation in the unknown x, and can easily be solved by
rearrangement
a
x
a
A quadratic equation like a a x