An adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the refrigerant from the condenser level to the evaporator level. R-134a enters the capillary tube as a saturated liquid at 70 degrees Celsius and leaves at -20 degrees Celsius. Determine the rate of entropy generation in the capillary tube for a mass flow rate of 0.2 kg/s.

Q: Air at 90 kPa and 147°C enters an adiabatic diffuser steadily at a rate of 5500 kg/h and leaves at…

A:

Q: 3. Steam enters an adiabatic turbine at 3000 kPa and 500°C and exits as a saturated vapour at 100…

A: steam enters at adiabatic turbine atP1=3000KPa and temperature(T1)=5000cexit at pressure (P2)=100KPa

Q: 1-Water vapor enters an adiabatic turbine at 6.5MPa pressure and 400 ° C temperature, with a mass…

A:

Q: Air is compressed from 95 kPa and 17°C to 722 kPa and 373°C. Assuming constant specific heats,…

A:

Q: Refrigerant 134-a is compressed in a two stage compressor. It enters the first stage of the…

A: Given:Refrigeration system=Two stage compression systemRefrigerant=R134aRefrigerant condition at…

Q: Steam enters a diffuser at 20 psia and 240°F with a velocity of 900 ft/s and exits as saturated…

A: Assumption is, The flow is steady. Potential energy change is negligible. No work interaction. Write…

Q: 1. Steam enters an adiabatic nozzle at 3 MPa and 450°C with a velocity of 50 m/s and exits at 0.6…

A:

Q: Hydrogen is stored in a tank (volume is 2.0 m) at a pressure of 500kPa and a temperature of 300K. A…

A:

Q: Water at 95°C having mass of 45 kg is filled in a container and is placed in well-insulated room.…

A: Data given-  Tw  = 95°C = 368 K  mw = 45 kg  Vair = 90 m3  Tair = 12°C = 285 K  Cw = 4.18 kJ/kg  CP…

Q: 6. 2 kg/sec of air has a decrease of internal energy of 25 KJ while its Centigrade temperature is…

A:

Q: A hot-water stream at 70C enters an adiabatic mixing chamber with a mass flow rate of 3.6 kg/s,…

A: To calculate the mass flow rate of cold water and rate of entropy generation during this…

Q: A pressure vessel contains 8 kg of nitrogen with internal energy of 4.6 MJ at a pressure of 3 MPa.…

A: Given : mass of nitrogen gas, m =8 kg              Internal energy = 4.6 MJ              Pressure,…

Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

A: Given data is

Q: If the turbine is adiabatic, determine the rate of work done by the steam during the process

A: Given: Inlet conditions of turbine 1: P1 = 5 MPa T1 = 600 oC m1˙ = 20 kg/s Steam leaves turbine 1 as…

Q: Air enters an adiabatic nozzle steadily at 300 Kpa, 200 °C and 30 m/s then leaves at 100 Kpa and 180…

A:

Q: kPa and at a rate of 2.4ms with an isentropic Air enters an adiabatic compressor at efficiency of…

A: The inlet pressure of the compressor is The inlet temperature is .The volume flow rate is The…

Q: a turbine at 1100 kpa , dry and saturated . The steam is exhausted from the turbine at 200 kpa and…

A:

Q: Calculate the change in specific entropy of air undergoing a process from a temperature of 300 K and…

A:

Q: Refrigerant -134a at 200 kPa and 40 C flows through a refrigeration line. Determine its specific…

A: Given: The pressure of the refrigerant is P=200 kPa. The temperature of the refrigerant is T=40°C.

Q: Consider a closed, isolated system that consists of two substances 1 and 2 that both have constant…

A:

Q: super heated steam enters an adiabatic gas turbine at 12 bar and 500 °C and leaves at 400 Kpa and…

A: To determine the required values in the above question, we must use two concepts:  1. Continuity…

Q: Refrigerant R134a enters an expansion valve at 800 kPa as a saturated liquid and exits at 100 kPa.…

A: Given:The initial pressure is .The final pressure is .The initial condition is saturated…

Q: An adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the…

A:

Q: An iron horseshoe of mass 1.47 kg is taken from a furnace at 660 ◦C and dropped into 1.83 kg of…

A: Given:  m1=miron=1.47 kgT1=660°Cm2=mwater=1.83 kgT2=8.5°Cc2=cw=4186 J/kg.Kc1=ciron=448 J/kg.K

Q: An insulated tank contains 5 kg of water at a pressure of 75 kPa and 40% of its mass is in the vapor…

A:

Q: he refrigerant SA-134a turns into saturated steam from wet steam in the evaporator tube at 140 kPa…

A:

Q: Saturated liquid water at 90 psia is expanded adiabatically through a valve to 5 psia. Assuming that…

A: Given Data State 1: saturated liquid, 90 psia State 2: 5 psia Adiabatic process (Q=0) No work…

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.