An inventor claims to have devised a process using only saturated steam at 100C which by a complicated series of steps, make heat continuously available at T of 177C. He claims further that, for every kilogram of steam taken into the process, 1800 kJ of energy as heat is liberated at this higher T of 177C. Show whether or not such a process is possible. In order to give the inventor the benefit of any doubt, assume cooling water to be available in unlimited quantity at 0C.

Q: A piston–cylinder device initially contains 1.4 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: Given data

Q: Steam enters a turbine at 3MPA and 471.245 °C at a rate of 8kg/s and exits at 0.2 MPa and 179.96°C.…

A: Since ypu have asked question with multiple subpart, we will solve the first three subpart for you.…

Q: Air at 22°C and 50 kPa steadily enters a nozzle whose inlet area is 0.4 m? with a velocity of 200…

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Q: A piston-cylinder device contains steam that undergoes a reversible thermodynamic cycle. Initially,…

A: Write the given data with suitable variables. P1=400 kPaT1=350 °CV1=0.3 m3P2=150 kPa

Q: A 1200-W electric resistance heating element whose diameter is 0.5 cm is immersed in 40 kg of water…

A: The data given is, Total power of the electric heater, P = 1200 W The diameter of element, d = 0.5…

Q: A throttling steam calorimeter is an instrument used for the determination of the quality of wet…

A: Introduction: The steam dryness fraction measures the quantity of water in the steam. If steam…

Q: 2. During some actual expansion and compression processes in piston-cylinder devices, the gases have…

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Q: Consider the Energy Equation as shown below. For a real system where P1 = P2 = 0, V, =V2 , and h, z2…

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Q: With a stirrer, the pressure of 15 grams of air has been raised adiabatically. enclosed in a rigid…

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Q: A piston–cylinder device initially contains 15 ft3 of helium gas at 25 psia and 70°F. Helium is now…

A: Given data: Initial volume, V1 = 15 ft3 Initial pressure, P1 = 25 psia Initial temperature, T1 =…

Q: During some actual expansion and compression processes in piston–cylinder devices, the gases have…

A: Given: The initial pressure of the gas is P1=350 kPa. The initial volume of the gas is V1=0.03 m3.…

Q: Air at 27°C and 100 kPa is contained in a piston– cylinder device. When the air is compressed…

A: Given, T1 = 27°C = 27+273 = 300 K P1 = 100 kPa T1 = 27°C = 27+273=300°K W = 1000 kJ P2 = 600 kPa m=?…

Q: A well-insulated 4-m × 4-m × 5-m room initially at 10°C is heated by the radiator of a steam heating…

A: Step-1 The dimension of room is: 4m X 4m X 5m. The initial temperature of the room is: T0 = 10 °C.…

Q: A piston–cylinder device initially contains 2 kg of refrigerant-134a at 800 kPa and 80°C. At this…

A: Given: The initial mass of the refrigerant in the piston-cylinder device is m1=2 kg. The final mass…

Q: 8-25 A mass of 8 kg of helium undergoes a process from an initial state of 3 m/kg and 15°C to a…

A: Refer thermodynamic tables, “Molar mass, gas constant and critical point properties”, and obtain the…

Q: A piston–cylinder device initially contains 2 kg of refrigerant-134a at 800 kPa and 80°C. At this…

A: Given, P1 = 800 kPa m1 = 2 kg T1= 80°C= 80+273= 353 K P2 = 500 kPa T2 = 20°C = 20+273= 293 K m2=…

Q: Steam enters a turbine steadily at 12.5 MPa and 450°C with a velocity of 75 m/s. If leaves the…

A: Given:P1=12.5 MPaT1=450°Cc1=75 m/sP2=75 KPax=0.95Q=-15 KJ/kgA1=100 cm2A2=1200 cm2

Q: A well-insulated 4-m × 4-m × 5-m room initially at 10°C is heated by the radiator of a steam heating…

A:

Q: ) A piston – cylinder device initially contains 1 kg of saturated water vapor at 0.2 MPa. Water is…

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Q: Steam is condensed in a closed system at a constant pressure of 75 kPa from a saturated vapor to a…

A: Given data as per question Pressure of the condensed steam = 75 kpa thermal energy reservoir…

Q: During a throttling process, the temperature of a fluid drops from 30 to –20°C. Can this process…

A: Yes, the process can occur adiabatically.

Q: An insulated piston–cylinder device contains 0.05 m3 of saturated refrigerant- 134a vapor at 0.8-MPa…

A: Givan data, P1 = 0.8 MPa P2 = 0.4 MPa V1 = 0.05 m3 It is given in question that the expansion…

Q: A cylinder fitted with a piston has a volume 0.1 m3 and contains 0.5 kg of steam at 500 kPa. How…

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Q: 240.C steam expands isentropically from 1.5 MPa to 150 kPa. Determine the work done per unit mass of…

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Q: Air enters an adiabatic nozzle steadily at 302 kPa, 215 oC, and 55 m/s, and leaves at 105 kPa and…

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Q: Liquid water at 120 kPa enters a 7-kW pump where its pressure is raised to 6.2 MPa. If the elevation…

A: Given Data  Power = 7000 W P1= 120 KPa. P2=6200 KPa v= 0.001 m3/Kg Elevation = 10m

Q: A well-insulated 4-m * 4-m * 5-m room initially at 10C is heated by the radiator of a steam-heating…

A: given data: The volume of the room V1= 4 m x 4 m x 5 m The initial temperature of air in the room,…

Q: The radiator of a steam heating system has a volume of 20 L and is filled with superheated water…

A: Given: The volume of the system is V=20 L. The initial temperature and pressure are T1=200 ⁰C and…

Q: A 1.8kg/s of steam expands in a turbine producing 550 kW of power output. The steam enters at a…

A: Given : m=1.8 kg/sW=550 kWV1=18 m/sV2=70 m/sz1-z2=900 mmh1-h2=400 kJ/kg

Q: One kg of air at 200 kPa and 127°C is contained in a piston–cylinder device. Air is now allowed to…

A: Given: The mass of the air is m=1 kg. The temperature of the air is T=127°C. The initial pressure of…

Q: Water vapor at 100 kPa and 150°C is compressed isothermally until half the vapor has condensed. How…

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Q: 5. During some actual expansion and compression processes in piston-cylinder devices, the gases have…

A:

Q: Calculate the work done when a gas expands from 350 kPa and 0.03 m3 to a final volume of 0.2 m3 for…

A: Given: The initial volume of the gas is V1=0.03 m3. The final volume of the gas is V2=0.2 m3. The…

Q: The radiator of a steam heating system has a volume of 20 L and is filled with superheated water…

A: Given, V = 20 L = 0.02 m3 P1 = 200 kPa T1 = 200°C T2 = 80°C The system undergoes constant volume…

Q: A well-insulated 4-m × 4-m × 5-m room initially at 10°C is heated by the radiator of a steam heating…

A: Given data T1=10°cV=15 LP1=200 KPaWfan=120 WP2=100 kPa

Q: A piston–cylinder device initially contains 1.4 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: The value of specific volume at an initial point having P1=100 kPa, T1=20°C and at the final point…

Q: A piston–cylinder device initially contains 0.6 kg of steam with a volume of 0.1 m3 . The mass of…

A: Given, a piston- cylinder device with the following data. Initial Volume of steam, V1=0.1m3 Mass of…

Q: A long roll of 2-m-wide and 0.5-cm-thick 1-Mn manganese steel plate (ρ = 7854 kg/m3 and cp = 0.434…

A:

Q: 2. A mass of 12 kg of saturated refrigerant-134a vapor is contained in a piston-cylinder device at…

A:

Q: A piston–cylinder device initially contains 1.4 kg of refrigerant-134a at 100 kPa and 20°C. Heat is…

A: Given data m=1.4 kgP1=100 kPaT1=20°cP2=120 KPa

Q: A piston–cylinder device contains 25 g of saturated water vapor that is maintained at a constant…

A: Given: The mass of the saturated vapor is m=25 g=0.025 kg. The value of pressure is P=300 kPa. The…

Q: 600 am flows steadily into a turbi turbine at 0.5 MPa and 200°C with a velocity of 180 m/s. The rate…

A: Given Data, m˙ = Mass flow rate of the steam =27 kg/s V1 = Velocity at inlet =0 m/s V2 = velocity at…

Q: A student living in a 4m x 6m x 6m dormitory room turns on her 150 W fan before she leaves the room…

A: GivenV = 4 x 6 x 6 = 144 m3              1 or i - initial  ; F - FinalP = 150 w , SQ = 0t = 10 h , R…

Q: 6-Five kg of steam at pressure of 4.9 bar is produced from water at 20°C. Determine the amount of…

A: givenmass of steam m=5kgpressure P=4.9bar=0.49MPatemperature T=20oCdryness fraction X=0.9

Q: Two rigid tanks are connected by a valve. Tank A contains 0.2 m3 of water at 400 kPa and 80 percent…

A: Given Tank A Volume = 0.2 m3 Pressure = 400 kPa Quality = 80% = 0.8 Tank B Volume = 0.5 m3 Pressure…

Q: A mass of 8 kg of helium undergoes a process from an initial state of 3 m3 /kg and 15°C to a final…

A: Given Data⇒mass of helium=8kgV1=3m3kgT1=288 KV2=0.5m3kgT2=353 KP0=100 KPaT0=298 KWe need to…

Q: Initially, 200 L of saturated vapor refrigerant-134a in a piston. The piston is free to move, and…

A:

Q: Water (0.12m) COPPER A 50-kg copper block initially at 80°C is dropped into an insulated tank that…

A: Given: Mass of the copper block is 50 kg. Temperature of cu block is 80C. Volume of the water is…

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.