A room is filled with saturated steam at 100°C with enthalpy of 2675.6 kJ/kg. Now a 5-kg bowling ball at 25°C is brought to the room. Heat is transferred to the ball from the steam, and the temperature of the ball rises to 100°C while some steam condenses on the ball as it loses heat (but it still remains at 100°C). The specific heat of the ball can be taken to be 1.8 kJ/kg · C. The approximate mass of steam that condensed during this process is

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A: Saturation Point: the point at which both liquid and vapour are in thermal equilibrium is called the…

Q: A frictionless piston–cylinder device contains 5 kg of nitrogen at 100 kPa and 250 K. Nitrogen is…

A: Step 1: The mass of nitrogen is m = 5 kg The initial pressure is P1 = 100 kPa The initial…

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Q: (ii) Consider a device with one inlet and one outlet. If the volume flow rates at the inlet and at…

A: For steady flow, mass flow rate should remain constant. In the case when volumetric flow rate is…

Q: A frictionless piston-cylinder device contains 5 kg of nitrogen at 100 kPa and 250 K. Nitrogen is…

A: Given data:

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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: Steam at 75 kPa and 8 percent quality is contained in a spring-loaded piston–cylinder device, with…

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Q: 77 kg of saturated water mixture is contained in a piston cylinder device initially at 450 kPa with…

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Q: The work required to compress 5 kg of air in an insulated cylinder from 200°C and 300 kPa to 800 kPa…

A: Write the given data. m=5 kgT=200 °C=473 KP1=300 kPaP2=800 kPa

Q: Steam at 100 psia and 650F is expanded adiabatically in a closed system to 10 psia. Determine the…

A: Given data as per question Steam pressure at entry= 100 psia Temperature = 650 F Steam pressure at…

Q: A frictionless piston–cylinder device contains 16 lbm of superheated water vapor at 40 psia and…

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Q: 2-kg of air (ideal gas) undergoes a compression process from 120 kPa to 600 kPa at a constant…

A: Given Data: Mass of the air, m=2 kg Temperature, T=300 K

Q: During an expansion process, the pressure of a gas changes from 15 to 100 psia according to the…

A: The initial pressure is given as,   Pi=15 psia   The initial volume is given as,   Vi=7 ft3   The…

Q: A piston-cylinder device, with a set of stops on the top, initially contains 3 kg of water at 200…

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Q: 20 kg of steam contained in a high-pressure tank. Tank is isolated, but heat loss to the surrounding…

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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: Wet steam at 2000C and 20% moisture is compressed in an irreversible adiabatic process to a pressure…

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Q: A scuba diver’s 2-ft3 air tank is to be filled with air from a compressed air line at 120 psia and…

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Q: Steam, with a specific enthalpy of 2803 kJ/kg, is flowing through a pipe located 5 m above the…

A:

Q: Show that the law of the adiabatic process is given by PV ˠ = constant Where: (ˠ) is the ratio of…

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Q: A rigid vessel contains 5 kg of wet steam at 0.4 Mpa. After the addition of 9,585 J the steam has a…

A: Given data: The mass of the wet steam is (m)= 5 kg The initial pressure of the wet steam is (P1) =…

Q: A 5-ft3 rigid tank initially contains refrigerant-134a at 60 psia and 100 percent quality. The tank…

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Q: A room is filled with saturated steam at 100°C with enthalpy of 2675.6 kJ/kg. Now a 5-kg bowling…

A: Given data: m=5 kgTi=25°CTf=100°CCp=1.8 kJ/kg°Chfg=2675.6 kJ/kg Need to determine the mass of steam…

Q: A 5-ft3 rigid tank initially contains refrigerant-134a at 60 psia and 100 percent quality. The tank…

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Q: A 2-ft3 rigid tank contains saturated refrigerant- 134a at 160 psia. Initially, 5 percent of the…

A: Write the given information. Write the properties of R134a at 160 Psi.

Q: A 0.8-m3 rigid tank contains carbon dioxide (CO2) gas at 250 K and 100 kPa. A 500-W electric…

A: Given, Before Heater is on, P1 = 100 kPa T1 = 250 K V1 = 0.8 m3 After Heater is on, P2 = 175 kPa…

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A: Given that, Mass flow rate of water, m˙=35.269 kg/sec,Presssure of water, P=0.03398675 kbar=33.98675…

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Q: Liquid water at 200 kPa and 20 degress celcius is heated in a chamber by mixing it with superheated…

A: Draw the schematic diagram of the mixing chamber as shown in Figure (1).

Q: 2 kg of air at 298 K and 120 kPa inside a piston cylinder device is heated to 860 K in an isochoric…

A: Given Data M= 2 kg T1= 298 K T2=860 K T3=1200 K

Q: A rigid tank contains 5 kg of refrigerant-134a initially at 20°C and 140 kPa. The refrigerant is now…

A: Given: The mass of the tank is m=5 kg. The initial temperature and pressure are T1=20 ⁰C and P1=140…

Q: A 0.5 m3 rigid tank contains refrigerant-134a initially at 200 kPa and 40 percent quality. Heat is…

A: Write the given values along with the suitable variables.

Q: A 200-m3 rigid tank contains compressed air at 1 MPa and 300 K. Determine how much work can be…

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Q: What is an adiabatic process? What is an adiabatic system?

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Q: A 0.05-m3 rigid tank initially contains refrigerant134a at 0.8 MPa and 100 percent quality. The tank…

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Q: 1. A piston-cylinder device contains 10.0 lbm of water initially at 225 psia and 25.59 ft. Now 4000…

A:

Q: Consider two identical rooms, one with a 2-kW electric resistance heater and the other with three…

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Q: A 5-ft3 rigid tank initially contains refrigerant-134a at 60 psia and 100 percent quality. The tank…

A: Given data:

Q: A student living in a 4 - m 5 - m 3 - m dormitory room turns on her 100 - W fan before she leaves…

A: Given, V = 4 m × 5 m × 3 m = 60 m3W˙= 100 Wt = 8 h = ( 8 × 3600) sP1 = 100 kPaT1 = 20 °C = 293 K…

Q: Nitrogen at 100 psia and 300°F in a rigid container is cooled until its pressure is 50 psia.…

A: Find out the final temperature T2=T1P2P1=76050100R=380R

Q: A 12-ft3 rigid tank contains refrigerant-134a at 30 psia and 55 percent quality. Heat is transferred…

A: Given Data⇒volume of tank=12 ft3P1=30 Psiax1=0.55P2=50 Psia In solutions there is no heat loss from…

Q: A 0.04-m3 tank initially contains air at ambient conditions of 100 kPa and 22°C. Now, a 15-L tank…

A: Given Data⇒P1=100 KPa V1=0.04 m3R=0.287KJkg KT1=295 Kcv=0.718KJkg KTeq=44KTa=22Kρ=1000kgm3V=0.015…

Q: A room contains 60 kg of air at 100 kPa and 15°C. The room has a 250-W refrigerator (the…

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Q: 0.8-m3 rigid tank contains

A:

Q: A 0.8-m3 rigid tank contains carbon dioxide (CO2) gas at 250 K and 100 kPa. A 500-W electric…

A: Given Data⇒P1=100 KPaV=0.8 m3For CO2COnsider gas constant  R=0.189JkgT1=250 KP2=175 KPaProblem…

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.