A 0.015 m rigid tank initially contains refrigerant R-134a at 0.4 MPa and 100 percent quality....

 

Transcribed Image Text:

A 0.015 m³ rigid tank initially contains refrigerant R-134a at 0.4 MPa and 100 percent quality. Then tank is connected by a valve to a supply line that carries R-134a at 1 MPa and 26 °C. The valve is now opened, allowing the refrigerant to enter the tank, and is closed when it is observed that the tank contains only saturated liquid at 0.7 MPa. Determine: (a) The mass of the refrigerant entered the tank. (4 pts) (b) The amount of heat transferred to the surroundings, which is at 20 °C. (4 pts) (c) The entropy generated during this process. (6 pts) A 0.015 m³ rigid tank initially contains refrigerant R-134a at 0.4 MPa and 100 percent quality. Then tank is connected by a valve to a supply line that carries R-134a at 1 MPa and 26 °C. The valve is now opened, allowing the refrigerant to enter the tank, and is closed when it is observed that the tank contains only saturated liquid at 0.7 MPa. Determine: (a) The mass of the refrigerant entered the tank. (4 pts) (b) The amount of heat transferred to the surroundings, which is at 20 °C. (4 pts) (c) The entropy generated during this process. (6 pts)

Answer rating: 100% (QA)

Given data Initial state in the tank Pressure P1 04 MPa Quality x1 1 100 quality Volume V 0015 m State after valve is closed Pressure P2 07 MPa Qualit... View the full answer