A prototype boiler that contains 10 kg of saturated steam at a pressure of 482.5kPa. (a) Determine the amount of heat which must be rejected in order to reduce the quality to 70%. (b) What will be the pressure and temperature of the steam at this new state? Compute for the (c) heat, (d) internal energy, (e) entropy, and (f) enthalpy at this new state.

Q: For water as a pure substance and using steam tables, determine the temperature (t) & enthalpy (h)…

A:

Q: A frictionless piston-cylinder device contains 3L of saturated liquid water at a pressure of 200…

A: Given:V=3 LP=200 KPat=22 min i=7.5 AV=160 V

Q: Q3 A partition is placed between two tank as shown in figure. Initially tank 1 contains 3.4 kg of…

A:

Q: PROBLEM 1 Diameter of pin at A = 25 mm Diamcter of cable BC = 10 mm Ultimate shear stress of pin =…

A: Given: dA=25 mmdBC=10 mmτmax=120 MPaσcable=1250 MPa

Q: (a) the final temperature, (b) the work done during this process, (c) the total heat transfers

A: Given: V1=0.9 m3 P1=350 kPa P2=400 kPa To determine: the final temperature, (b) the work done during…

Q: A certain polyatomic gas stored at a 180-L rigid tank and 11 atm is heated at constant volume from…

A:

Q: A 2 kg of saturated liquid-vapor has a 0.6591 m3 at 200 kPa is heated at constant volume until it…

A:

Q: Syringe device that is equipped with piston and fixed points functioning as stopper are filled with…

A:

Q: A Piston-cylinder containing 300 lit of steam at 700 kPa and 250oC undergoes a constant pressure…

A:

Q: Required information A piston-cylinder device contains 0.82 kg of refrigerant-134a at -10°C. The…

A:

Q: In a rigid tank with a volume of 0.5 m3, initially there is an excellent gas at 100 kPa pressure and…

A:

Q: A heat-insulated (adiabatic) constant volume vessel divided by a metal curtain. The volume of the…

A: Given: m = 2.5 kg T1=60oC P1=600Kpa P2=10Kpa

Q: As shown in the figure, a piston-cylinder assembly with a stopper contains R-410A, a refrigerant at…

A:

Q: A helium gas is compressed in an adiabatic compressor from an initial state of 14.7 psia and 60 F to…

A: Given- P1=14.7 psia=101.353 kPa, T1=60°F=288.71 KT2=350°F=449.82 K Assuming helium to be an ideal…

Q: Shown in the figure, an insulated rigid tank is divided into two equal parts by a partition.…

A: Giveninsulated tankm=4kgP1=600kPaT1=300KR=0.287 kJ/kgKCv=0.7180 kJ/kgK∆U=mCvT2-T1

Q: Determine the units of the quantity sbar/Ru, where sbar is the molar specific entropy and Ru is the…

A: This problem is related with the basic thermodynamics and units of molar specific entropy and…

Q: A rigid tank initially contains 4 kg of saturated liquid R-134a at 24C. A valve in the bottom of the…

A:

Q: A frictionless piston-cylinder device contains 3 L of saturated liquid water at a temperature of…

A: Given:V1=3 L=0.003 m3T1=110°C   saturated liquidt=22 min i=7.5 AV=160 V

Q: erature is 32 ASSUMPTIC

A: Given: m= 5 kg  T1  =1500 C  T2 = 3200 C

Q: 2 kg of water at T, = 120 °C with quality of x = 78% in a piston cylinder arrangement as shown in…

A: Given: T1=120°C x1=0.78 Mass (m)=2kg Mass of the piston (M)=124kg Cross-sectional area of the…

Q: A 653 g/h stream of methyl alcohol, also called methanol, at 6.0atm 10.0C was held at constant…

A: To find: The rate of heat supply. Given: The initial temperature of the methanol is T1=10°C. The…

Q: Determine the specific volume, specific entropy and specific internal energy of steam at a pressure…

A:

Q: A piston-cylinder assembly contains 5 kg of saturated water vapor at a pressure of 3 MPa. At the end…

A: Data given-  m = 5kg  Pressure of saturated water vapor Pv= 3Mpa  Pressure of saturated liquid  Pl =…

Q: A rigid tank contains 2 kg of an ideal gas at 4 atm and 40°C. Now a valve is opened, and half of…

A: Given data: Mass of ideal gas (m1)       =2 kg, Initial Pressure (P1)            = 4 atm.…

Q: Saturated liquid water at 2.0 MPa is throttled to 20 kPa. Determine the fraction of water evaporated…

A: GivenP1=2MPa at Saturated liquid waterafter throttled P2=20kPa

Q: A well insulated 70 m³ tank initially contains 23000 kg of water distributed between liquid and…

A: Write down the given values with suitable variables.

Q: A liquid R-134a bottle has an internal volume of 0.001 m3 . initially it contains 0.4 kg of R-134a…

A: Volume of tank, V = 0.001 m3Initial mass, m1 = 0.4 kgTemperature inside the container, T1 =…

Q: 74 kg of water is heated from 61°C to 100 C. What is the change in entropy? The specific heat of…

A: GIVEN DATA MASS OF WATER m=74kg Temprature T1 =61'C , T2=100'C Specific heat of water C=10 cal/kg.K…

Q: The volume of a monatomic ideal gas doubles in an adiabatic expansion. By what factor do (a) the…

A: Given: Monoatomic ideal gas Adiabatic expansion V2=2V1 To determine: At what factor Temperature and…

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.