An insulated vertical cylinder-plunger device contains 0.8 m ^ 3 of refrigerant 134a at 1.2 MPa and 120 ° C. With a linear (compression) spring, all of its force is applied to the plunger at that moment. A valve connected to the cylinder opens and refrigerant escapes. The spring is released as the plunger is lowered, and the pressure and volume drop to 0.6 MPa and 0.5 m ^ 3, at the end of the process. Determine: a) the amount of refrigerant that escaped and b) the final temperature of the coolant

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Q: If you had a fixed mass of hot air stored in a rigid container and decided to transfer heat from the…

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Q: A rigid tank of volume 10 m³ initially contains saturated water vapor at a temperature of 120 °C.…

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Q: As shown in the figure below, water behind a dam enters an intake pipe at a pressure of 24 psia and…

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Q: A tank contains R134a initially at 3 degrees Celsius with a quality of 0.25. the pressure is held…

A: Given: Initial state T1=3oCx1=0.25 Supply line: Psupply=975 kPaTsupply=118oC Final State: m2=20…

Q: Two boilers, both operating at 200 psia, discharge equal amounts of steam into the same steam main.…

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Q: A 10-kg steel container (cp = cv = 0.46 kJ/(kg K)) is cured at 500 °C. After coming out of the oven,…

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Q: solle не An adiabatic air compressor compresses 15 L/s of air at 1 bar and 30 °C to 8 bar and 350…

A: The specific heat ratio (k) for air is a constant value and it is 1.4. This value is used in the…

Q: Water is compressed adiabatically, but inefficiently, from p1 = 150 kPa and T1 = 160 ∘C to a…

A: Using steam table,

Q: The volumetric flow rate of an ideal gas in a pipe is 3.51lt/sec. If the temperature of the gas is…

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Q: Steam enters a mixing chamber at 100 kPa, V1= 40 m/s, and a specific volume of 0.4 m3/kg. Liquid…

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Q: Air at 15 degree Celsius and 95 kpa enters the diffuser of a jet engine and steadily with a velocity…

A: The given values are- T1=288 K , P1=95 kPa , v1=250ms , A1=0.5 m2, v2≈0Assuming it as a steady flow…

Q: In turbochargers a turbine is directly connected to a compressor. The power harvested by the turbine…

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Q: A gas cylinder with interior volume 11.6 L holds compressed air at 17.4 MPa. The cylinder is joined…

A: Given: Volume of the gas cylinder: →V1=11.6 L=0.0116 m3 Pressure in the gas cylinder: →P1=17.4 MPa…

Q: Two streams of air and oxygen flowing at 3.5 m³/s and 2 m³/s respectively are fed into a pipe that…

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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.