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A rigid tank is connected by a valve to a supply line where refrigerant at 1.4 MPa and 100 degrees Celsius flows steadily. The quality of the refrigerant in the tank is 0.7 at the initial phase and is 14 degrees Celsius. The volume of the tank is 0.3 m^3. The valve is opened and refrigerant is allowed to enter the tank until the pressure in the tank is 700 kPa and is all vapor phase. Find 1) the mass of the refrigerant and 2) the heat transfer to surroundings and the final temperature of the tank when the valve is closed.
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A rigid tank has a volume of 23.3 m^3 and due to safety requirements its pressure should not exceed 105 bar. If the tank has been filled with 1000kg of water vapor and is heated to 360°C check to see if it is within safety requirements.
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a stainless steel tube of 1 cm outer diameter and 1mm wall thickness receives a uniform radiative heat flux of 100 wcm2
a 60 cm wide conveyer belt is driven over a 2mm film of water. determine the resultant force required to keep the belt
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