A rigid, 20-L steam cooker is arranged with a pressure relief valve set to release vapor and maintain the pressure once the pressure inside the cooker reaches 150 kPa. Initially, this cooker is filled with water at 175 kPa with a quality of 10 percent. Heat is now added until the quality inside the cooker is 40 percent. Determine the minimum entropy change of the thermal energy reservoir supplying this heat.

Q: Air at 200 kPa and 950 K enters an adiabatic nozzle at low velocity and is discharged at a pressure…

A: The ideal temperature at the exit of the nozzle is

Q: Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated…

A: Given:P=140 kPa,heat absorbed, dQ=180 kJtemprature maintained=-10o C

Q: One ton of liquid water at 80°C is brought into a wellinsulated and well-sealed 4-m × 5-m × 7-m room…

A: Given data: *The mass of the liquid water is mw=1000 kg. *The initial temperature of water is…

Q: Nitrogen gas is compressed from 80 kPa and 27°C to 480 kPa by a 10-kW compressor. Determine the mass…

A: Given: The initial pressure of the nitrogen gas in the compressor is P1=80 kPa The final pressure of…

Q: Determine the work input and entropy generation during the compression of steam from 100 kPa to 1…

A: The initial pressure of the system P1 = 100 kPa The final pressure of the system P2 = 1000 kPa The…

Q: Refrigerant-134a enters a compressor as a saturated vapor at 160 kPa at a rate of 0.03 m3/s and…

A: (a) The surrounding temperature is given as, The rate of change in entropy of the surrounding is…

Q: An adiabatic turbine at 10 MPa, 500 degrees Celsius, and 55 meters per second, and departs at 100…

A:

Q: The temperature of an ideal gas having constant specific heats is given as a function of specific…

A: The expression of the entropy change of the process is given by, Here, dS is the infinitesimal…

Q: 3. Water enters an adiabatic steam turbine at 7 MPa and 450 °C at a flow rate of 100 m³/min and…

A:

Q: Water is contained in a closed rigid tank at an initial pressure of 1200 kPa. Heat transfer occurs…

A: Given data: -  The initial pressure is P1 = 1200 kPa. The final pressure is P2 = 7 MPa. The mass of…

Q: A mass of 25 lbm of helium undergoes a process from an initial state of 50 ft3 /lbm and 60°F to a…

A: Given data as per question mass of helium = 25 lbm

Q: Air is compressed from an initial state of 100 kPa and 17°C to a final state of 600 kPa and 57°C.…

A: Given: The initial pressure of the air before compression is P1 = 100 kPa. The final pressure of the…

Q: Which of the two gases—helium or nitrogen—has the higher final temperature as it is compressed…

A: Given data

Q: Steam enters an adiabatic turbine at 5 MPa and 500ºC with a 50 m/s velocity and exits from the…

A: The above question relates to Turbine with single inlet and exit. It is based on the application of…

Q: Steam enters an adiabatic turbine at 2Mpa and 250C and expands to 25kPa with an isentropic…

A: To find: The power output of this turbine. Given: The inlet pressure to adiabatic turbine is P1=2…

Q: Air at an initial state of 100 kpa and 17 degree Celsius is compressed to a final state of 600 kpa…

A:

Q: Argon gas enters an adiabatic turbine at 1350°F and 200 psia at a rate of 40 lbm/min and exhausts at…

A: Given data The gas enter at the turbine is T1=1350 F. The gas pressure at the turbine is P1=200…

Q: 2-kg of air (as an ideal gas) is compressed in an adiabatic compressor from an initial state of 100…

A: Given Data State 1: 100 kPa, 300 K State 2: 200 kPa, 600 K m=2 kg

Q: Refrigerant-134a at 140 kPa and –10°C is compressed by an adiabatic 1.3-kW compressor to an exit…

A: The properties of refrigerant-134a at 140 kPa and -10 degree centigrade temperature are taken from…

Q: Q3: Steam enters an adiabatic turbine at 8 MPa, 550°C, and 15 m/s and leaves at 60 kPa, 150°C, and…

A: At state 1 P1=8MPa T1=550°C C1=13 m/s Using the superheated steam table h1=3521KJ/Kg S1=6.8778…

Q: Water vapor enters a turbine at 6 MPa and 400C, and leaves the turbine at 100 kPa with the same…

A: Given data as per question Water vapor pressure at entry= 6Mpa Temperature of vapor at entry = 4000…

Q: Refrigerant-134a enters a compressor as a saturated vapor at 160 kPa at a rate of 0.03 m3 /s and…

A: Given: The initial pressure P1=160 kPa. The final pressure is P2=0.03 m3/s. The entropy increase is…

Q: Refrigerant-134a at 140 kPa and –10°C is compressed by an adiabatic 0.5-kW compressor to an exit…

A:

Q: Air is compressed by an adiabatic compressor from 95 kPa and 27°C to 600 kPa and 277°C. Assuming…

A:

Q: Saturated R-134a vapor enters a compressor at 68F. At compressor exit, the specific entropy is the…

A: Write the given information. Write the properties of R134a at 68°F.

Q: R-134a enters an adiabatic compressor as a saturated vapor at 120kpa at a rate of 0.5 m³/min and…

A:

Q: What is the minimum internal energy that steam can achieve as it is expanded adiabatically in a…

A: Given: The initial pressure of the steam, P1 = 1500 kPa The final pressure of the steam, P2 = 100…

Q: Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated…

A: At 140 Kpa ( Refrigerant-134a table) T=-18.77°C = 254.23K Heat rejected, Q=180 KJ TO=-10°C=263 K

Q: A rigid tank is divided into two equal parts by a partition. One part of the tank contains 5.5 kg of…

A: Here, the mass of the compressed liquid water in first part of the tank (where the compressed liquid…

Q: Ten grams of computer chips with a specific heat of 0.3 kJ/kg·K are initially at 20°C. These chips…

A: Entropy is defined as the degree of randomness of a molecule and the entropy change of the…

Q: Air is compressed in a car engine from 22°C and 95 kPa in a reversible and adiabatic manner. If the…

A:

Q: Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated…

A:

Q: Is it possible for the entropy change of a closed system to be zero during an irreversible process?…

A: No,it is not possible for the entropy change of a closed system to be zero during an irreverisible…

Q: Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa and 100°C. If the…

A:

Q: What is the total entropy change to expand water at 30 psia and 70 percent quality to 10 psia in a…

A:

Q: Steam enters an adiabatic turbine at 5 MPa and 500°C with a 50 m/s velocity and exits from the…

A: Question (a) and (b) are solved here. For question (c), please post this question again.

Q: A car engine at 22 degree Celsius and 95 kPa have its air compressed in a reversible and adiabatic…

A:

Q: Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 10 MPa,…

A:

Q: Consider a device into which a gas flows steadily at a constant temperature of 30 °C. Determine the…

A: Given:  T = 30 oC = 30 +273 = 303 K Q = -65 MW total rate of entropy change = ?

Q: Steam enters an adiabatic turbine steadily at 7 MPa, 500°C, and 45 m/s and leaves at 100 kPa and 75…

A:

Q: Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa and 100°C. If the…

A: P1=3 MPa , T1=400oCP2=50 kPa , T2=100oCPower output=2 MW

Q: Determine the work input and entropy generation during the compression of steam from 100 kPa to 1…

A: Given data Pump: Water enters as saturated  liquid Inlet pressure P1= 100KPa Exit Pressure P2 = 1MPa…

Q: Refrigerant-134a enters an adiabatic compressor as saturated vapor at 30 psia at a rate of 20 ft3…

A:

Q: Ten grams of computer chips with a specific heat of 0.3 kJ/kg·K are initially at 20°C. These chips…

A: Given Data⇒Specific heatcp=0.3KJKTemperature(T1)=20°C=293KTemperature(T2)=-40°C=233KProblem…

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.