Homework Answers
Add Answer to:
The secondary -stage creep behavior of a high temperature steel at 538 C is given by...
(b) A 2 4 CoMo alloy steel pipe with a radius of 20 mm and a wall thickness of 4 mm contains hot fluid under constant p...
(b) A 2 4 CoMo alloy steel pipe with a radius of 20 mm and a wall thickness of 4 mm contains hot fluid under constant pressure (10 MPa) and constant temperature (700°C). The stress (o) on the pipe wall is given by the equation: σ Prit, where P is pressure, r is radius and t is wall thickness. The creep constants for the alloy steel are in the following table. (i)What is the creep rate of the pipe? (ii)If...
A material has been creep tested and the data in the table below has been obtained...
A material has been creep tested and the data in the table below has been obtained 1. Using the data given, a. Estimate the steady state creep rate at temperature of 500°C and stress of 500 MPa. (5 marks) D. Estimate the time to failure for a sample Under a stress of 625 MPa at 500°C (5 marks) T (Celcius) Stress (Mpa) Stage 2 Creep Rate (1/h) Time to failure (h) 650 650 650 675 675 675 700 700 700...
2. A steel bar 100 mm long and having a square cross section 20 mm on...
2. A steel bar 100 mm long and having a square cross section 20 mm on an edge is pulled in tension with a load of 89,000 N and experiences an elongation of 0.10 mm. Assuming that the deformation is entirely elastic, calculate the elastic modulus of steel. Give your answer in GPa. 3. A zinc single crystal is being pulled in tension with the normal to its basal plane (0001) at 60° to the tensile axis and the slip...
TURBO MACHINES SUBJECT QUESTION 10 A multi-stage high -pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa and a stagnation temperature of 500°C. The corresponding specifi...
TURBO MACHINES SUBJECT
QUESTION 10 A multi-stage high -pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa and a stagnation temperature of 500°C. The corresponding specific enthalpy is 3410kJ.kg. The steam exhaust from the turbine at a stagnation pressure of 0.7 MPa abs., the steam having been in a super-heated condition throughout the expansion. It can be assumed that the steam behaves like a perfect gas over the range of the expansion and that v...
Given that the initial rate constant is 0.0160s-1 at an initial temperature of 24 deg C,...
Given that the initial rate constant is 0.0160s-1 at
an initial temperature of 24 deg C, what would the rate constant be
at a temperature of 100 deg C for the same reaction described in
Part A?
From Part A:
The activation energy of a certain reaction is 31.5 kJ/mol. At
24∘C, the rate constant is 0.0160s−1. T2 = 41C
Part B at an initial temperature of 24 °C, what would the rate constant be at a temperature of 100....
What is the expected life ( time to 1% strain ) of a turbine blade subjected to the loading history given below? Loading History Stress MPa Temperature °C Time hours 650 550 650 750 750 650 550 550 5...
What is the expected life ( time to 1% strain ) of a turbine
blade subjected to the loading history given below?
Loading History Stress MPa Temperature °C Time hours 650 550 650 750 750 650 550 550 550 650 550 0.05 0.1 0.01 0.01 0.01 1.5 0.1 0.1 0.1 0.1 0.1 700 1000 800 500 600 700 1000 1100 1000 700 1000
Loading History Stress MPa Temperature °C Time hours 650 550 650 750 750 650 550 550 550...
(b) A 2 4 CoMo alloy steel pipe with a radius of 20 mm and a wall thickness of 4 mm contains hot fluid under constant pressure (10 MPa) and constant temperature (700°C). The stress (o) on the pipe wall is given by the equation: σ Prit, where P is pressure, r is radius and t is wall thickness. The creep constants for the alloy steel are in the following table. (i)What is the creep rate of the pipe? (ii)If...
A material has been creep tested and the data in the table below has been obtained 1. Using the data given, a. Estimate the steady state creep rate at temperature of 500°C and stress of 500 MPa. (5 marks) D. Estimate the time to failure for a sample Under a stress of 625 MPa at 500°C (5 marks) T (Celcius) Stress (Mpa) Stage 2 Creep Rate (1/h) Time to failure (h) 650 650 650 675 675 675 700 700 700...
2. A steel bar 100 mm long and having a square cross section 20 mm on an edge is pulled in tension with a load of 89,000 N and experiences an elongation of 0.10 mm. Assuming that the deformation is entirely elastic, calculate the elastic modulus of steel. Give your answer in GPa. 3. A zinc single crystal is being pulled in tension with the normal to its basal plane (0001) at 60° to the tensile axis and the slip...
TURBO MACHINES SUBJECT
QUESTION 10 A multi-stage high -pressure steam turbine is supplied with steam at a stagnation pressure of 7 MPa and a stagnation temperature of 500°C. The corresponding specific enthalpy is 3410kJ.kg. The steam exhaust from the turbine at a stagnation pressure of 0.7 MPa abs., the steam having been in a super-heated condition throughout the expansion. It can be assumed that the steam behaves like a perfect gas over the range of the expansion and that v...
Given that the initial rate constant is 0.0160s-1 at
an initial temperature of 24 deg C, what would the rate constant be
at a temperature of 100 deg C for the same reaction described in
Part A?
From Part A:
The activation energy of a certain reaction is 31.5 kJ/mol. At
24∘C, the rate constant is 0.0160s−1. T2 = 41C
Part B at an initial temperature of 24 °C, what would the rate constant be at a temperature of 100....
What is the expected life ( time to 1% strain ) of a turbine
blade subjected to the loading history given below?
Loading History Stress MPa Temperature °C Time hours 650 550 650 750 750 650 550 550 550 650 550 0.05 0.1 0.01 0.01 0.01 1.5 0.1 0.1 0.1 0.1 0.1 700 1000 800 500 600 700 1000 1100 1000 700 1000
Loading History Stress MPa Temperature °C Time hours 650 550 650 750 750 650 550 550 550...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago