Refrigerant-134a flows steadily through a diverging pipe while receiving energy from the surroundings via heat transfer. The diameter at the pipe inlet is 10 cm and the diameter at the outlet is 28 cm. The refrigerant enters the pipe at 200 kPa and 20°C with a velocity of 5 m/s, and exits the pipe at 180 kPa and 40°C. Determine a) Draw a schematic of the system identifying the boundary and any mass/energy flows across this system boundary. b) Determine i. ii. the volume flow rate of the refrigerant at the inlet, the mass flow rate of the refrigerant through the pipe, and the velocity and volume flow rate at the outlet.

Refrigerant-134a flows steadily through a diverging pipe while receiving energy from the surroundings via heat transfer. The diameter at the pipe inlet is 10 cm and the diameter at the outlet is 28 cm. The refrigerant enters the pipe at 200 kPa and 20°C with a velocity of 5 m/s, and exits the pipe at 180 kPa and 40°C. Determine a) Draw a schematic of the system identifying the boundary and any mass/energy flows across this system boundary. b) Determine i. ii. the volume flow rate of the refrigerant at the inlet, the mass flow rate of the refrigerant through the pipe, and the velocity and volume flow rate at the outlet.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.12P

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