Using the appropriate tables, determine the change in specific entropy between the specified states, in Btu/lb...
Using the appropriate tables, determine the change in specific entropy between the specified states, in Btu/lb · °R.
oxygen as an ideal gas, T1 =
T2 = 520°R, p1 = 10 atm,
p2 = 5 atm.
Homework Answers
Add Answer to:
Using the appropriate tables, determine the change in specific
entropy between the specified states, in Btu/lb...
Thermodynamics COURSE Using the appropriate tables, determine the change in specific entropy between the specified states,...
Thermodynamics COURSE Using the appropriate tables, determine the change in specific entropy between the specified states, in Btu/lb · °R. (a) water, p1 = 10 lbf/in.2, saturated vapor; p2 = 500 lbf/in.2, T2 = 1300°F. (b) ammonia, p1 = 140 lbf/in.2, T1 = 160°F; T2 = -10°F, h2 = 345 Btu/lb. (c) air as an ideal gas, T1 = 80°F, p1 = 1 atm; T2 = 340°F, p = 5 atm. (d) oxygen as an ideal gas, T1 = T2...
Calculate the change in entropy ΔS for 5.2 moles of an ideal gas when its thermodynamic...
Calculate the change in entropy ΔS for 5.2 moles of an ideal gas when its thermodynamic state changes from p1 = 1.50 atm and T1 = 400.0 K to p2 = 3.00 atm and T2 = 600.0 K. The molar heat capacity of the gas at constant volume is CV,m = (7/2) R, and is independent of the temperature.
At steady state, 1.8 lb/s of hot gaseous products of combustion cool from p1 = 18.0...
At steady state, 1.8 lb/s of hot gaseous products of combustion cool from p1 = 18.0 lbf/in2, T1 = 2400°F to p2 = 16.0 lbf/in2, T2 = 260°F as they flow through a pipe. Heat transfer from the gas occurs at a boundary temperature of Tb = 230°F. Use the ideal gas model with Cp = 0.25 Btu/lb.°R and an average molecular weight, M = 27.5 lb/lbmol. Let To = 60°F and ignore the effects of motion and gravity. Determine...
1. Using the tables for water, determine the specific entropy at the indicated states, in kJ/kg.K...
1. Using the tables for water, determine the specific entropy at the indicated states, in kJ/kg.K. In each case, locate the state by hand on a sketch of the T-s diagram a. p-5.0 MPa, T-4000 b. p 5.0 MPa, T 100o c. p 5.0 MPa, u-1872.5 kJ/kg d. p 5.0 MPa, saturated vapor.
1. Using the tables for water, determine the specific entropy at the indicated states, in kJ/kg.K. In each case, locate the state by hand on a sketch...
5. Hydrogen undergoes a polytropic process with n=0.7 from an initial specific volume of 22 ft3/lb...
5. Hydrogen undergoes a polytropic process with n=0.7 from an initial specific volume of 22 ft3/lb and initial temperature of 200° F to a final specific volume of 16 ft3/lb. The entropy decrease during the process is 7.5 Btu/°R. Model the hydrogen as an ideal gas with constant specific heats. Evaluate the specific heat at 200° F. Determine the mass of the hydrogen.
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change...
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change of entropy per pound of air (b) If the air was cooled from 1200° R to 540° R while the pressure drops from 50 lbf/in2 to 40lbf/in2 what does it say about the system entropy? Does the result violate the entropy increase principle?
3. Air...
5. Calculate the change in entropy of an ideal gas when 2.00 moles of it is...
5. Calculate the change in entropy of an ideal gas when 2.00 moles of it is changed from 25 °C and 1.50 atm to 135 °C and 7.00 atm. You may assume that Cp.m=5/2 R. (10 pts) J/K
True or False (Problems 1 through 10) 1. The change in entropy of a closed system...
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
Using the tables for water, determine the specified property data at the indicated states. (a) At...
Using the tables for water, determine the specified property data at the indicated states. (a) At p = 3 bar, v = 0.35 m3/kg, find T in °C and u in kJ/kg. (b) At T = 320°C, v = 0.33 m3/kg, find p in MPa and u in kJ/kg. (c) At p = 28 MPa, T = 400°C, find v in m3/kg and h in kJ/kg. (d) At T = 10°C, v = 70 m3/kg, find p in kPa and...
A gas turbine receives air at temperature T1 = 827 °C and specific volume v, -0.1...
A gas turbine receives air at temperature T1 = 827 °C and specific volume v, -0.1 m®/kg. Air exits the turbine at P2 = 3 bar and T2 = 450 °C. The volumetric flow rate of air at the inlet is 0.5 m/s. The power output on the shaft is 1900 kW. Determine: The pressure of air at the inlet (pa) in kPa [2 marks] b) The mass flow rate in kg/s [1 mark] c) Find the rate of heat...
1. Using the tables for water, determine the specific entropy at the indicated states, in kJ/kg.K. In each case, locate the state by hand on a sketch of the T-s diagram a. p-5.0 MPa, T-4000 b. p 5.0 MPa, T 100o c. p 5.0 MPa, u-1872.5 kJ/kg d. p 5.0 MPa, saturated vapor.
1. Using the tables for water, determine the specific entropy at the indicated states, in kJ/kg.K. In each case, locate the state by hand on a sketch...
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change of entropy per pound of air (b) If the air was cooled from 1200° R to 540° R while the pressure drops from 50 lbf/in2 to 40lbf/in2 what does it say about the system entropy? Does the result violate the entropy increase principle?
3. Air...
5. Calculate the change in entropy of an ideal gas when 2.00 moles of it is changed from 25 °C and 1.50 atm to 135 °C and 7.00 atm. You may assume that Cp.m=5/2 R. (10 pts) J/K
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
A gas turbine receives air at temperature T1 = 827 °C and specific volume v, -0.1 m®/kg. Air exits the turbine at P2 = 3 bar and T2 = 450 °C. The volumetric flow rate of air at the inlet is 0.5 m/s. The power output on the shaft is 1900 kW. Determine: The pressure of air at the inlet (pa) in kPa [2 marks] b) The mass flow rate in kg/s [1 mark] c) Find the rate of heat...
Most questions answered within 3 hours.
-
Humans have used horses for transportation for millions of
years. Therefore, they will use horses for...
asked 1 hour ago -
The following are the Jensen Corporation's unit costs of making
and selling an item at a...
asked 1 hour ago -
Does direct Medicare reimbursement of Advanced practice nurses
increase access to their services?
asked 2 hours ago -
List and explain why a company would choose to use a
published
compensation survey vs. creating...
asked 2 hours ago -
A discrete random variable X can take values from 1 to 10. Find
the variance of...
asked 2 hours ago -
The primary financial goal of a corporation is to maximize:
shareholders wealth.
earnings per share.
stock...
asked 3 hours ago -
determine whether the vectors u=(1,2,3,), v=(-2,1,0) and
w=(1,0,1) are linearly dependent or independent.
asked 3 hours ago -
python
Define a function called print_values which takes a dictionary
object as a parameter. The function...
asked 4 hours ago -
In Chapter 1 you created a program named Triangle in
which you displayed a seven-line triangle...
asked 4 hours ago -
Research question: What are the differences between separately
stated and non separately stated transactions in an...
asked 4 hours ago -
By using Arduino write a code that connects two LEDs to two
push-buttons. Each button controls...
asked 5 hours ago -
Bank of America has bonds that pay a coupon interest rate of 5.5
percent and mature...
asked 6 hours ago