refrigerant at 1 MPa, 100°C flows steadily. Now the valve is opened slightly, and the refrigerant is allowed to enter the tank. When the pressure in the tank reaches 788 kPa, the entire refrigerant in the tank exists in the vapor phase only. At this point the valve is closed. Determine (a) the final temperature in the tank, (b) the mass of refrigerant that has entered the tank, and (c) the heat transfer between the system and the surroundings. R-134a 1 MPa 100°C 0.2 m R-134a

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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3
A 0.2-m rigid tank initially contains
refrigerant-134a at 8°C. At this state,
38% of the mass is in the liquid
phase. The tank is connected by a
valve to a supply line where
refrigerant at 1 MPa, 100°C flows
steadily. Now the valve is opened
slightly, and the refrigerant is
allowed to enter the tank. When the
pressure in the tank reaches 788
kPa, the entire refrigerant in the tank
exists in the vapor phase only. At
this point the valve is closed.
Determine (a) the final temperature
in the tank, (b) the mass of
refrigerant that has entered the tank,
and (c) the heat transfer between
the system and the surroundings.
R-134a
1 MPa
100°C
0.2 m
R-134a
The energy balance of the system is:
Transcribed Image Text:3 A 0.2-m rigid tank initially contains refrigerant-134a at 8°C. At this state, 38% of the mass is in the liquid phase. The tank is connected by a valve to a supply line where refrigerant at 1 MPa, 100°C flows steadily. Now the valve is opened slightly, and the refrigerant is allowed to enter the tank. When the pressure in the tank reaches 788 kPa, the entire refrigerant in the tank exists in the vapor phase only. At this point the valve is closed. Determine (a) the final temperature in the tank, (b) the mass of refrigerant that has entered the tank, and (c) the heat transfer between the system and the surroundings. R-134a 1 MPa 100°C 0.2 m R-134a The energy balance of the system is:
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