Question

A piston-cylinder assembly containing 3 kg of an ideal gas undergoes a constant pressure process from...

A piston-cylinder assembly containing 3 kg of an ideal gas undergoes a constant pressure process from an initial volume of 48 m3 to a final volume of 30 m3 . During the process, the piston supplies 1.2 MJ of work to the gas. The gas has a constant specific heat at constant volume of 1.80 kJ/(kg∙K) and a specific gas constant of 1.48 kJ/(kg∙K). Neglect potential and kinetic energy changes.

a. Determine the initial specific volume of the gas in m3 /kg.

b. Determine the final specific volume of the gas in m3 /kg.

c. Determine the pressure of the gas in kPa.

d. Determine the initial temperature of the gas in ⁰C

e. Determine the final temperature of the gas in ⁰C f. Determine the specific heat transfer to the gas in MJ/kg.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A mass of one kg of water within a piston–cylinder assembly undergoes a constant-pressure process from...
A mass of one kg of water within a piston–cylinder assembly undergoes a constant-pressure process from saturated vapor at 500 kPa to a temperature of 260°C. Kinetic and potential energy effects are negligible. For the water: a) Evaluate the work, in kJ, b) If the work is 30 kJ, evaluate the heat transfer, in kJ, c) If the heat transfer is negligible, evaluate the entropy production in kJ/K d) Determine if the process is reversible, irreversible, or impossible.
5 kg of air in a piston cylinder assembly undergoes a Carnot power cycle. Heat is...
5 kg of air in a piston cylinder assembly undergoes a Carnot power cycle. Heat is received at temperature?1=727°C and rejected at ?3=27°C.During the heat input process, the pressure changes from ?1=1200kPa to ?2=900kPa, respectively. Assume the air behaves as an ideal gas with constant specific heats. Determine: a.pressures [kPa] at beginning and end of the isothermal heat rejection process (?3,?4) b.heat transfer from high temperature source [kJ] c.thermal efficiency d.net work output for cycle [kJ]
Oxygen gas is contained in a piston cylinder assembly at an initial pressure of 1000 kPa...
Oxygen gas is contained in a piston cylinder assembly at an initial pressure of 1000 kPa and expands from 0.2 m3 to 1.0 m3 by a process where PV = constant. The gas has an internal energy change of -200 kJ. Calculate the work (kJ) and the heat transfer (kJ) done during the process.
Water undergoes a constant‐volume process within a piston–cylinder assembly from saturated liquid at 4 bar to...
Water undergoes a constant‐volume process within a piston–cylinder assembly from saturated liquid at 4 bar to a final pressure of 50 bar. Kinetic and potential energy effects are negligible. Determine the work and the heat transfer, each in kJ per kg of water. [7 points]
One kg of water in a piston-cylinder assembly undergoes two processes in series from an initial...
One kg of water in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 0.8 MPa, T1 = 500°C: Process 1-2: Constant-pressure compression until the volume is half of the initial volume. Process 2-3: Constant-volume cooling until the pressure drops to 400 kPa. Sketch the two processes in series on a p-v and T-v diagram. Determine the work and heat transfer for both processes.
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is...
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is pv1.2 = constant. The mass of the gas is 0.4 lb and the following data are known: p1 = 160 lbf/in.2, V1 = 1 ft3, and p2 = 300 lbf/in.2 During the process, heat transfer from the gas is 2.1 Btu. Kinetic and potential energy effects are negligible. Determine the change in specific internal energy of the gas, in Btu/lb. Δu⁢=
1) An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as...
1) An ideal gas is contained in a piston-cylinder device and undergoes a power cycle as follows: 1-2 isentropic compression from an initial temperatureT1= 20 degree celsius with a compression ratio r = 5 2-3 constant pressure heat addition 3-1 constant volume heat rejection The gas has constant specific heats with cv = 0.7 kJ/kg·K and R= 0.3 kJ/kg·K. (a) Sketch the P-v and T-s diagrams for the cycle. (b) Determine the heat and work interactions for each pro-cess, in...
A 0.2 m3 piston-cylinder initially contains 400 K air. A heavy frictionless piston maintains a pressure...
A 0.2 m3 piston-cylinder initially contains 400 K air. A heavy frictionless piston maintains a pressure of 500 kPa abs. Then, a weakness in the cylinder wall blows out and creates a hole. Air escapes through the hole until the piston drops far enough to cover the hole. At that point, the volume is half the initial volume. During this process, 75 kJ of heat is transferred to the 100 kPa, 300 K surroundings. Using Cp = 1.005 kJ/kg-K and...
A cylinder with a moveable piston holds 1.20 mol of argon at a constant temperature of...
A cylinder with a moveable piston holds 1.20 mol of argon at a constant temperature of 295 K. As the gas is compressed isothermally, its pressure increases from 101 kPa to 145 kPa. (a) Find the final volume of the gas. (answer in: m3) (b) Find the work done by the gas. (answer in: kJ) (c) Find the heat added to the gas. (.. kJ)
A piston cylinder device contains a mixture of 0.2 kg of H2 and 1.6 kg of...
A piston cylinder device contains a mixture of 0.2 kg of H2 and 1.6 kg of N2 at 100 kPa and 300K. Heat is now transferred to the mixture at constant pressure unitl the volume is doubled. Assuming constant specific heats at the average temperature (the constant pressure specific heats of H2 and N2 are 14.501 kJ/kg°K and 1.049 kJ/kg°K, respectively), determine: a) the heat transfer. b) the entropy change of the mixture.