Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...

Question

Question

Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...

Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a velocity of 56.9 m/s. At the exit, the temperature is 60 °C and the pressure is 220 kPa. The pipe diameter is 0.03 m. Determine the rate of heat transfer between the pipe and its surroundings, in kW

engineering Mechanical-Engineering

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Tainen P1=450 kcla, Tie 50°C Vi = 56.9m/s : Terroºc Pe = 220 kPa. d003 m . Solution from R134a property tables, AE T= 50%, P from man conservation, - mi= m₂ = m ::ņ= SAV = X AiXVI me 18. 52 47 (003)²x56.9 m= 0.7450 kg/s: .: = 0.7450 ( 453.59 - 440.87

Please Rate,

Thank You!!!!

Add a comment

Answer 2

Similar Homework Help Questions

A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/...

A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/kg and a mass flow rate of 0.1 kg/s. At the exit, the specific enthalpy is 1,531 kJ/kg. If there is no significant change in kinetic energy from inlet to exit, determine the rate of heat transfer between the pipe and its surroundings, in kW. B) Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 3.1 bar and a velocity of...
Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature...

Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature of 290 K, and with a mass flow rate of 0.72 kg/s. At the exit, the pressure is 700 kPa and the temperature is 450 K. Heat transfer from the compressor to its surroundings occurs at a rate of 3 kW. Kinetic and potential energy changes can be ignored. Determine the power input to the compressor, in kW. Assume that the air is an...
Question 5 Heat is to be transferred to Refrigerant 134a by flowing it through a long...

Question 5 Heat is to be transferred to Refrigerant 134a by flowing it through a long horizontal pipe at steady state. The pipe has an inner diameter of 5 cm. When refrigerant saturated vapour flows in at 20 kg/min and -6 °C, while exits at 800 kPa, the heat transfer rate to the refrigerant was found to be 3.5 kW. Assume an exit temperature in the range of 80 - 100°C and determine the percentage error between that assumed value...

Question 5 Heat is to be transferred to Refrigerant 134a by flowing it through a long...

Question 5 Heat is to be transferred to Refrigerant 134a by flowing it through a long horizontal pipe at steady state. The pipe has an inner diameter of 5 cm. When refrigerant saturated vapour flows in at 20 kg/min and -6 °C, while exits at 800 kPa, the heat transfer rate to the refrigerant was found to be 3.5 kW. Assume an exit temperature in the range of 80 - 100 °C and determine the percentage error between that assumed...
Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 1,671 kJ/kg...

Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 1,671 kJ/kg and a mass flow rate of 0.5 kg/s. At the exit, the specific enthalpy is 2,162 kJ/kg. If there is no significant change in kinetic energy from inlet to exit, determine the rate of heat transfer between the pipe and its surroundings, in kW.
Steam enters a horizontal 14-cm-diameter pipe as a saturated vapor at 5 bar with a velocity...

Steam enters a horizontal 14-cm-diameter pipe as a saturated vapor at 5 bar with a velocity of 10 m/s and exits at 4.5 bar with a quality of 95%. Heat transfer from the pipe to the surroundings at 291K takes place at an average outer surface temperature of 400 K. For operation at steady state, determine (a) the velocity at the exit, in m/s. (b) the rate of heat transfer from the pipe, in kW.? (c) the rate of entropy...

1.Steams enters a turbine operating at steady state with a mass flow rate of 4600kg/h. The...

1.Steams enters a turbine operating at steady state with a mass flow rate of 4600kg/h. The turbine develops a power output of 1000kW. At the inlet, the pressure is 60 bar, the temperature is 400° C, and the velocity is 10m/s. At the exit,the pressure is 0.1 bar, the quality is 0.90, and the velocity is 50m/s. Calculate the rate of heat transfer between the turbine and surroundings, in kW. Determine the entropy generation if the temperature of the surroundings...
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor...

Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°C with a volumetric flow rate of 0.18 m3/s. Refrigerant exits at 9 bar, 70°C. Changes in kinetic and potential energy from inlet to exit can be ignored. Determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kW.
Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity...

Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity of 10 m/s. The refrigerant enters the compressor as a saturated vapor at 10°C and leaves the compressor at 1400 kPa with an enthalpy of 281.39 kJ/kg with a negligible velocity. The rate of work done on the refrigerant is measured to be 380 kW. If the elevation change between the compressor inlet and exit is negligible, determine the rate of heat transfer associated...

6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of...

6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of 0.7 m3/min and exits at 1 MPa pressure. If the isentropic efficiency of the compressor is 87%, determine (a) the temperature of the refrigerant at the exit of the compressor, (b) the power input (in kW), and (c) the rate of entropy generation during this process.

Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...

Homework Answers

Add Answer to:
Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...

Post as a guest

Earn Coins

A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/...

Air enters a compressor operating at steady state at a pressure of 100 kPa, a temperature...

Question 5 Heat is to be transferred to Refrigerant 134a by flowing it through a long...

Question 5 Heat is to be transferred to Refrigerant 134a by flowing it through a long...

Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 1,671 kJ/kg...

Steam enters a horizontal 14-cm-diameter pipe as a saturated vapor at 5 bar with a velocity...

1.Steams enters a turbine operating at steady state with a mass flow rate of 4600kg/h. The...

Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor...

Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity...

6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of...

Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...

Homework Answers

Add Answer to: Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...

Post as a guest

Earn Coins

Add Answer to:
Refrigerant 134a enters a horizontal pipe operating at steady state at 50°C, 450 kPa and a...