at 300K and 100 kPa. Assuming that the process is reversible, determine the heat transferred to the water inside the cylinder and the work and coefficient of operation of

Q: Air enters a compressor at ambient conditions of 100 kPa and 20°C at a rate of 6.2 m3 /s with a low…

A: Given Inlet conditions Pressure =100 kPa Temperature = 20o C Mass flow rate = 6.2 m3/s Outlet…

Q: cylinder-piston device loaded with a constant load containing 1 liter of water at 400 kPa and 15%,…

A:

Q: Consider a steady-state steam turbine. Steam enters the turbine at a pressure of 12.5MPa and a…

A:

Q: Steam at 3 Mpa and 450 oC is expanded to 40 kPa in an adiabatic turbine with an isentropic…

A:

Q: Refrigerant-134a is to be cooled by water in a condenser. The refrigerant enters the condenser with…

A:

Q: Steam enters a turbine steadily at 3 MPa and 450°C at a rate of 8 kg/s and exits at 0.2 MPa and…

A: Determine enthalpy and entropy at inlet and exit conditions using steam table

Q: Refrigerant 134-a enters the coil of the condenser of a residential heat pump at 500kPa and 400C and…

A: The superheated refrigerant enters the compressor and leave as a saturated liquid. Therefore,…

Q: In a power plant, water (density = 1000 kg/m³) is pumped from 80 kPa to 3 MPa. The pump has an…

A:

Q: Superheated steam enters the turbine of a steam power plant at 5 MPa and 450 ºC, and exits at 10…

A: Given:P1=5 MPaT1=450°CP2=10 KPaη=90%m=10 Kg/s

Q: A heat engine receives heat from a source at 1200 K at a rate of 500 kJ/s and rejects the waste heat…

A: Given data :TH= 1200 K              TL= 300 KQH= 500 KWW= 180 KW

Q: Steam in an adiabatic turbine expands from 4 MPa and 450°C to 0.1 MPa with a flow rate of 6 kg / s.…

A: Given: Inlet condition of the steam,P1=4MPaT1=450°CExit condition of steam P2=0.1MPaMass flow rate…

Q: 5. Consider a steam turbine in which the steam enters at 23.26 MPa and 808 K with a flow rate of…

A: A) Turbine inlet at P1= 23.26MPa and T1= 808k Pcri= 21.6MPaP1>Pcri (Pcri= critcal pressure)So,…

Q: A turbine is operating steadily and connected to a generator to convert mechanical work to…

A: Solution: Inlet conditions Inlet Pressure P1=4.5MPa Inlet temperature T1=400°C From superheated…

Q: Steam enters an adiabatic nozzle at 3.5 MPa and 300°C with a low velocity and leaves at 1.6 MPa and…

A: Answer : Second law efficiency is the ratio of exergy destruction to the exergy at initial state and…

Q: Steam enters an adiabatic turbine at P1 MPa and T1°C with a mass flow rate of z kg/s and leaves at…

A:

Q: . Water flows through a horizontal coil heated from the outside by high temperature flue gases. As…

A: Given data as per question The initial pressure of water =200 kpa The initial temperature of water =…

Q: .2 kg/min of air (R=0.287, Cp=1.0062 kJ/kg.K and k =1.4) are compressed isothermally from 30 deg C…

A:

Q: An insulated piston–cylinder device contains 0.018 m3 of saturated refrigerant-134a vapor at 0.6 MPa…

A: Write the given data:

Q: A cylinder-piston device loaded with a constant load containing 1 liter of water at 400 kPa and 15%,…

A:

Q: Steam enters a turbine steadily at 3 MPa and 450°C at a rate of 8 kg/s and exits at 0.2 MPa and…

A:

Q: A piston–cylinder device contains 8 kg of refrigerant134a at 0.7 MPa and 60°C. The refrigerant is…

A: Given Data: The mass of refrigerant is: m=8 kg. The initial pressure of the refrigerant is: P1=0.7…

Q: 3. Water flows through a horizontal coil heated from the outside by high temperature flue gases, as…

A: hi=Enthalpies of the Inlet Water Streams=344.2 kJ/kg ho=Enthalpies of the Outlet Water…

Q: Consider a steam power plant that operates between the pressure limits of 5 MPa and 10 kPa. Steam…

A: Draw the T-s diagram.

Q: piston–cylinder device contains 8 kg of refrigerant- 134a at 0.7 MPa and 60°C. The refrigerant is…

A:

Q: 4. Air is compressed steadily in an adiabatic compressor from 100 kPa and 25°c to 500 kPa and 167°C…

A:

Q: Steam enters an adiabatic turbine at 6 MPa, 6008C, and 80 m/s and leaves at 50 kPa, 1008C, and 140…

A: Given that: for an adiabatic turbine, P1 = 6 MPa, T1 = 600 oC, V1 = 80 m/s P2 = 50 kPa, T2 = 100 oC,…

Q: 8-63 Steam enters an adiabatic turthine at 6 MPa, 600°C, and 80 m/s and leaves at 50 kPa, 100°C, and…

A:

Q: Steam in an adiabatic turbine expands from a pressure of 6 MPa and a temperature of 300 ° C to a…

A: Given Data  At 6 MPa T=300C using superheated table  h1=2884.2 KJ/Kg At 0.1 MPa using saturated…

Q: A piston-cylinder device contains 8 kg of refrigerant- 134a at 0.7 MPa and 60°C. The refrigerant is…

A:

Q: A piston–cylinder device initially contains 2 L of air at 100 kPa and 25°C. Air is now compressed to…

A: Write the given data: V1=2 L=2×10-3 m31000 l1 m3P0=100 kPaTo=25 °C=25+273 (K)=298 KP1=600 kPaT1=150…

Q: An inventor claims that a new fridge can operate between -15 degree Celsius and 150 degree C while…

A: Given:T2=-15°C =258 KT1=150°C =423 KHeat taken from sink,Q2=2200 WWork input,W=2000 W

Q: A house that is losing heat at a rate of 35,000 kJ/h when the outside temperature drops to 4°C is to…

A: Here the  electric resistance heater can be considered as a heat pump.         COP of this…

Q: An adiabatic device looks like an inverted T with 3.03 kg/s of steam at 4MPa and 600 ⁰C entering…

A:

Q: Air enters the compressor of a gas turbine plant at ambient conditions of 100 kPa and 25 ⁰C with a…

A:

Q: Steam at 7 MPa and 400°C enters a two-stage adiabatic turbine at a rate of 15 kg/s. Ten percent of…

A: Given : P1=7MPaT1=400°Cm = 15 kg/sP2=1.8 MPaP3=10 kPaη = 88%T∞=25°C

Q: Oxygen gas is compressed in a piston–cylinder device from an initial state of 12 ft3 /lbm and 75°F…

A: Given data: The characteristic gas constant for oxygen is The specific heat at constant volume for…

Q: Consider a steady-state steam turbine. Steam enters the turbine at a pressure of 12.5 MPa and a…

A: Given data, PH = Higher pressure or turbine pressure = 12.5 MPa T1 = Temperature at the inlet to the…

Q: Liquid water enters a pump at 100 kPa and 30°C at a rate of 1.35 kg/s and leaves at 4 MPa. If the…

A:

Q: 4. Steam enters the condenser of a steam power plant at 20000 kPa and a quality of 95 percent with a…

A: To find: The mass flow rate of the cooling water required. Given: The pressure of steam at the inlet…

Q: an adiabatic diffuser steadily with a velocity of 600 m/s and leaves at 600 kPa and 100 ⁰C.…

A:

Q: Water vapor enters a turbine with a mass flow rate of 3 kg/s, and at a temperature and pressure of…

A:

Q: Refrigerant 134-a enters the evaporator coils placed at the back of the freezer section of a…

A: Given that: Inlet conditions of the evaporator, P = 100 kPa, x = 0.2 Exit conditions of the…

Q: 6.20) Refrigerant 134-a enters the evaporator coils of a refrigerator at 1.8MPA with a quality of 45…

A:

Q: An air stream at 150ºC and 400 kPa with mass flow rate of 0.6 kg/s enters a steadystate steady-flow…

A: given data;air stream inter in turbine atT1=1500c=423KP1=400KPaat exitT2=600c=333KP2=100KPamass flow…

Q: 4- A hair dryer is basically a duct in which a few layers of electric resistors are placed. A small…

A:

Q: Steam enters an adiabatic turbine at 4MPa and 600C and exits at 40 kPa. If the efficiency of the…

A:

Q: Steam enters a two-stage adiabatic turbine at 8 MPa and 500°C. It expands in the first stage to a…

A: The given values according to the above figure are, State 1: P1=8 MPaT1=500 0C State 2: P2=2…

Q: Is it possible to expand water at 30 psia and 70 percent quality to 10 psia in a closed system…

A: Find out the initial entropy of the water S1=Sliq30+xSevap30 S1=0.36821+0.7(1.33132) S1=1.30013…

Q: A 0.1-m3 rigid tank initially contains refrigerant-134a at 1.2 MPa and 100 percent quality. The tank…

A: Specific volume is defined as the mass of the substance per unit volume. Conservation of mass law…

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.