An insulated cylinder contains 1kg of water. The cylinder volume is 0.06 metres cubed and contents are held in place by a heavy piston at a pressure of 2 bar. The contents of the cylinder are then heated by an internal heater causing the piston to move up to the cylinder until the volume has increased to 1 metres cubed. 1) find the dryness fraction at the start of the process 2) calculate the final temperature of steam 3) how much heat has been added

Q: One kg. of gas is confined to a constant volume tank. Initial pressure and volume are 4 0.21m3…

A: Given that,  Q=82 kJ,  p1=4 barm=1 kg,  V1=0.21 m3 Final temperature, T2=127oC

Q: Q1: A piston-cylinder device initially contains 3 kg of air at 5 bar and temperature 27°C. The air…

A: GIVEN: Mass of Air = 3 kg P1= 5 bar T1= 27° C=300 K The air the expands at constant pressure to 0.3…

Q: Water substance is contained in a piston-cylinder device initially at 1.0 MPa and 0.2678 m3/kg. It…

A: Consider water as an ideal gas and write the ideal gas condition. Write the properties of water at…

Q: 2kg of air occupying 0.7 m3, had an original temperature of 15°C. It was heated then at constant…

A: Given that, mass of air =2kg volume of air =0.7m3 initial temperature=15°C…

Q: 3) An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass…

A:

Q: A man goes to a traditional market to buy a steak for dinner. He finds a 12‑oz steak (1 lbm = 16 oz)…

A: Write the expression of the unit cost of the steak from the traditional market.

Q: 2.40 A gas is compressed in a cylinder by a movable piston to a volume one-half of its original…

A: Option d is correct

Q: A crucible of molten metal at 1800°C is placed on the foundry floor. The foundry man covers it with…

A:

Q: steam at 100C saturated vapor underwent heat transfer isometrically to 1MPa. Find the change in…

A:

Q: A mass of gas, at an initial internal energy of 300 kJ, is allowed to expand behind a piston until…

A: Given: The type of process and type is gas is not given. Assume that the process is adiabatic…

Q: In a piston-cylinder assembly, there is initially a pressure of 300 kPa, a temperature of 150oC and…

A: Given that, Initial pressure of air inside a cylinder, P1=300 kPa,Initial temperature of air inside…

Q: 2.2) A cylinder and piston assembly contain water at 105°C and 85% quality, with a volume of one…

A: Given that: T1 = 105 C, x = 85%, V1 = 1L V2 = 1.5 L D = diameter of the piston k = spring constant…

Q: A kettle contains half liter of water at 30°C is heated in a stove. The heat transfer rate is 5 KW.…

A:

Q: 1) A closed system undergoes a process where the work done on it is 130 Btu. the pressure varies…

A: Work-done on a closed system, W=-130Btu (negative because work is done on the system) Variation of…

Q: A gas contained in a cylinder is compressed, the work required for compression being 5000 kJ.During…

A: Given:work required for compression, W=-5000 kJHeat interaction, Q=- 2000 kJ

Q: In a rigid container, there is 3 kg of saturated liquid vapor mixed water. The temperature in the…

A: Given Data⇒ Mass of saturated liquid  (m1)=3 kg Final mass after escape(m2)=(3-1.2)kg m2=1.8 kg…

Q: Find the flow work done by Carbon Dioxide if its change in internal energy is 260kJ/kg. Use kCO2 =…

A:

Q: A Metal container with a mass of 2 kg and containing 2.30 kg of water is put it on a fire. Assume…

A:

Q: Q3: Air at 15 C and 1.05 bar occupies 0,02 m'. The air heated at constant volume until the pressure…

A: Given Data: The initial temperature of air is, T1=15°C=15+273 K=288 K. The initial pressure of air…

Q: 3. The movement of a piston in a cylinder is restrained by a spring with a spring constant…

A: Given Data⇒Spring constant K=250 lbinAt a position x=0      F=0 lbfProblem definition⇒Problem says…

Q: A kilogram of Argon gas( MW= 40 kg/kmol, k=5/3) is in a piston cylinder set-up. Initially, it has…

A:

Q: The tank of a leaky air compressor originally holds 90 L of air at 33deg C and 225 kPa. During a…

A:

Q: A kettle contains half liter of water at 30°C is heated in a stove. The heat transfer rate is 5 KW.…

A:

Q: A Piston-Cylinder arrangement initially contains 3 kg of water as saturated liquid at 200 kPa…

A:

Q: A piston-cylinder arrangement contains 2 kg of steam originally at 200°C and x=0.9. The volunie…

A:

Q: Water (1 kg) at 20 °C is placed in contact with a 50 °C reservoir. After it equilibrates, it is…

A: Given data: m=1 kgT1=20°C=293 KT2=50°C=323 KT3=100°C=373 KCw=4.2 kJ/kg.K Need to determine the total…

Q: Refrigerant-134a initially at 8° C occupies a volume of 0.18 m³. Vapor occupies 58% of the volume.…

A: Given:R-134aT=8°CV=0.18 m3vg=0.58*V

Q: A spherical research balloon is filled with air at 8 bar and 120 deg.C and has a volume of 1 m3, it…

A: Calculate heat rejected in kJ . And diameter of spherical balloon after cooling in meter.

Q: A lead object is dropped from a height of 10 m onto a hard floor. The object bounces, rising to a…

A:

Q: A Copper ball at 40°C is dropped in a mug containing water at 40C. The heat will

A: The correct option is option a).not flow from Copper ball to water or from water to Copper ball.

Q: 10 litres of hot water at 70° C is mixed with an equal volume of cold water at 20° C. Find the…

A:

Q: A flat plate of glass, having a height of 1 ft is heated to 200 F in an annealing furnace. The plate…

A: Given data Length of flat plate = 1 ft = 0.3048 m Temperature of flat plate = 200 F = 366.4833 K…

Q: The tank of a leaky air compressor originally holds 90 L of air at 33 °C and 225 kPa. During a…

A:

Q: 1. A frictionless piston-cylinder device contains 2 kg of nitrogen at P kPa and I, K Nitrogen is now…

A:

Q: Example 2 An oxygen cylinder has a capacity of 300 L and contains 0, at 3.1 MPa and 18 °C. The value…

A:

Q: A piston and cylinder assembly contains 2 kg of air at 27 ° C and 200 kPa. A linear spring, its mass…

A: Solution:

Q: In a thermodynamic experiment, a given amount of air is heated at constant pressure from 1.7 m3, 25…

A: This is the very basic question of thermodynamics. Concept used is heat transfer in a constant…

Q: Initially 3 kg of saturated water mixture at 300 kPa with a quality of 0.8 is contained in a…

A: (a) To find: The work done during the process. Given: The mass is mixture is m=3 kg. The initial…

Q: A student staying in a room measuring 4m x 6m x 6m leaves his room on a summer morning and leaves…

A: Given data: Fan power, P = 150 W. Time interval, t = 10 h. Initial room temperature, T1 = 15°C.…

Q: 2. 1.5 kg of a liquid with a constant specific heat of 2.5 k/kg.K) is stirred in a well-insulated…

A: Given data: m=1.5 kgC=2.5 kJ/kg.K∆T=15°C Need to determine the work in this process.

Q: A piston-cylinder assembly contains 0.35 kg of air at 500 kPa pressure and 57 °C temperature. First,…

A:

Q: (a) An incoming stream of 1500kmol/min consists of saturated water with 65% liquid water and 35%…

A:

Q: A tank has two rooms separated by a membrane. Room A has 1 kg of air and a volume of 0.5 m3; room B…

A: Given data: mA=1 kgVA=0.5 m3ρB=0.75 kg/m3VB=0.75 m3 Need to determine the final density of the air.

Q: 2. Suppose a piece of metal at 90 °C is quickly transferred into a Styrofoam cup containing 212…

A: (D) The specific heat capacity of the metal : Cmetal=Heat Capacitymass of metal  Heat Capacity :…

Q: A piston-cylinder device includes 1 L of water at 110 °C, 90% quality as shown in fig. The diameter…

A: Given data: Initially, piston-cylinder device contains Water at: T1=110 °C ; V1= 1 lit=0.001 m3 ;…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.