3 kg of air in a closed movable container undergoes a few processes. Initially, the air...

3 kg of air in a closed movable container undergoes a few processes. Initially, the air with P1=330kPa and T1=70°C is cooled without producing any work until P2= 100kPa, and then it is expanded according to PVn=cont, where n=1.84 until the volume is double. The air again will be heated without changing the volume until the temperature of the air increase to the initial temperature. It is then cooled with constant pressure until the volume becomes 0.5m3. The air undergoes isothermal compression process with Wb=-130kJ. Finally, the air undergoes a polytropic expansion to the initial state.

1.1. Sketch the P-V diagram

1.2. Find all P’s, V’s and T’s

1.3. Calculate all Q’s

1.4. Determine the nett work of the cycle

Expert Solution

Please go through the detailed solution provided in the image for a clear understanding. If you find it useful, Please don’t forget to upvote the answer for my motivation. Have a good day....

samet mamat answered 1 year ago

A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at...

A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at 200oC, 1 bar. During an interval of 20 minutes, the paddle wheel transfers energy to the air at a rate of 1 kW. During this time interval, the air also receives energy by heat transfer at a rate of 0.5 kW. These are the only energy transfers. Assume the ideal gas model for the air, and no overall changes in kinetic or potential energy....

One kg de air initially at 300 K and 100 kPa undergoes a quasi-equilibrium constant-pressure process...

One kg de air initially at 300 K and 100 kPa undergoes a quasi-equilibrium constant-pressure process in a piston-cylinder assembly. If the final temperature is 450 K, determine the work and heat interactions and the change in the enthalpy.

Initially, only H2S is present at a pressure of 0.245 atm in a closed container. What...

Initially, only H2S is present at a pressure of 0.245 atm in a closed container. What is the total pressure in the container at equilibrium?

A mass of m=1kg of steam is contained in a closed rigid container. Initially the pressure...

A mass of m=1kg of steam is contained in a closed rigid container. Initially the pressure and temperature of the steam are: p1= 1.5 MPa and t1=240?C, respectively. Then the temperature drops to T2 =100?C as the result of heat transfer to the surroundings. Determine: a) quality of the steam at the end of the process, b) percentage of volume that is occupied by the saturated liquid at the final state, c) heat transfer with the surroundings per unit mass...

A closed container with a volume of 2 m3 contains 4 kg of saturated liquid and...

A closed container with a volume of 2 m3 contains 4 kg of saturated liquid and saturated steam mixture water at 200 kPa pressure. Heat is given from the ambient temperature of 160⁰C until the water in the container is completely saturated. Note: T (K) = 273 + ºC a) Find the entropy change of the system. b) Find the heat transfer to the container. c) Find the total entropy change.

A closed system contains 1kg of air initially at 100kPa, 30 deg Celsius and 0.5m3.The air...

A closed system contains 1kg of air initially at 100kPa, 30 deg Celsius and 0.5m3.The air expands reversibly and isothermally until the volume of the system doubles.For the process determine the enthropy change and the heat transfer of the air being expanded,

Air is contained in a piston-cylinder. Initially, the 0.35 kg of air is at 2 MPa...

Air is contained in a piston-cylinder. Initially, the 0.35 kg of air is at 2 MPa and 350°C. The air is first expanded isothermally to 500 kPa, then compressed polytropically with a polytropic exponent of 1.25 to the initial pressure, and finally compressed at the constant pressure to the initial state. Calculate the net heat transfer during the polytropic process in kJ assuming constant specific heats at 300 K (with 3 significant figures).

1) Suppose you have a closed rigid container of air at 20 Celsius on the surface...

1) Suppose you have a closed rigid container of air at 20 Celsius on the surface of the Earth. We change the temperature of the container to 72 Celsius, leaving it closed, and read a pressure gauge attached to the container. Initially the reading was 101 KPa (kilopascals, or 1000 N/m2). What is the new reading? Give your answer in KPa. 2) Match these sounds with the sound energy in dB (decibels). - A. ...

5 kg of saturated water mixture in a rigid container initially at the standard pressure (state...

5 kg of saturated water mixture in a rigid container initially at the standard pressure (state 1) is heated at constant volumeto a pressure of 35 MPa (state 2). This heating is performed in such a way that the process passes through the critical point of the water: a) What is the volume in m3 occupied by the vapor phase and the liquid phase of the mixture at the initial condition (state 1)? b) Determine the change in internal energy...

A hot-air balloon is initially floating (stationary) a few metres above the ground. The radius of...

A hot-air balloon is initially floating (stationary) a few metres above the ground. The radius of the spherical balloon is 6.25 m, and the density of surrounding air is 1.29 kg m-3. "Ballast" is weight of negligible volume that can be dropped to make the balloon rise. How much weight would you have to drop overboard to make the balloon rise 105 m in 15.0 s? You may assume that the density of surrounding air remains constant.

Question