A rigid tank initially contains 29 lbm of air at 83 ∘ ∘ F and 16.8 psia. Additional air is added to the tank and now the temperature is 99.6 ∘ ∘ F and the pressure is now 27.72 psia.
a) What is the volume of the tank
____________ft 3 ft3
b) How much mass was added to the tank?
_____________lbm
A rigid tank initially contains 29 lbm of air at 83 ∘ ∘ F and 16.8...
A rigid tank contains 20 lbm of air at 50 psia and 80 F. The air is now heated until its pressure doubles. Determine (a) the volume of the tank and (b) the amount of heat transfer. Answers: 80 ft^3, 1898 Btu
4. A rigid vessel contains 0.46 lbm of air at 80 F and 200 psia. The air is heated to 160 F with an electric resistance heater. How much energy is added? a. 2.7 Btu b. 6.3 Btu c. 3.9 Btu d. 8.8 Btu 5. What is the final pressure of the air in problem 4? a. 200 psia b. 400 psia c. 230 psia d. 318 psia 4. A rigid vessel contains 0.46 lbm of air at 80 F...
A rigid tank contains a partition that divides the tank into two sections, each having a volume of 2 ft3 . The left side contains 1.5 lbm of refrigerant R-134a at a pressure of 50 psia, and the right side contains 4 lbm of refrigerant R-134a at 30 psia. The partition is removed and the contents are allowed to mix. Heat transfer occurs with the surroundings until the entire tank contents reach a new equilibrium temperature of 60 °F. For...
Problem 5(25 points) A rigid tank initially contains a partition that separates water at two different states. One side of the partition initially contains 4.5 lbm of steam at 150 psia and 600°F. The other side of the partition contains 7 lbm of saturated liquid 25 percent. The pressure at the final state is 50 psia. -vapor mixture at 300°F with a vapor mass fraction of partition is removed, and mixing occurs until equilibrium is established. The a) b) Determine...
Two rigid tanks filled with water are connected by a valve. Tank A has a pressure of 40.9 psia, a specific volume of 17.52 ft3lbm, and a volume of 22.2 ft3. Tank B contains 5 lbm of water at 80 psia and 443∘F. What is the volume of tank B? ft3 The valve is opened and the two tanks reach an equilibrium state. (Assume the valve does not occupy any additional volume.) What is the specific volume of the water...
A 17-ft3 rigid tank initially contains saturated refrigerant-134a vapor at 160 psia. As a result of heat transfer from the refrigerant, the pressure drops to 50 psia. a.) Determine the final temperature. Use data from refrigerant tables. (Please provide an answer before moving on to the next part.) b.) Determine the amount of refrigerant that has condensed.(lbm) (Please provide an answer before moving on to the next part.) c.) Determine the heat transfer. (Btu)
2) A mixture of 4 lbm of CO2 and 3 lbm of N2 is stored in a tank with a volume of 5 ft3. The temperature of the mixture is maintained at 80°F. Evaluate: (a) the total pressure of the mixture, (b) the mole fraction of both the gases, (c) the molecular weight of the mixture, and (d) the apparent specific gas constant of the mixture. (30 pts.) A mixture of 4 lbm of CO2 and 3 lbm of N2...
PLEASE EXPLAIN HOW TO APPROACH THIS PROBLEM, DO NOT SOLVE. THANK YOU. A rigid tank initially contains a partition that separates water two different states. One side of the partition initially contain 4.5 lbm of steam at 150 psia and 600 ºF . The other side of the partition contains 7 lbm of saturated liquid-vapor mixture at 300 ºF with a vapor mass fraction of 25 %. The partition is removed, and mixing occurs until equilibrium is established. The pressure...
A piston-cylinder contains 6.9 lbm of water initially at 300 psia and 500°F. The volume then doubles in a polytropic process to a final pressure of 200 psia. How much heat was added, in units of Btu. Use a negative sign if heat actually removed instead of added. Selected Answer: 753.48 Correct Answer: 1,293.8 - 1096
An insulated 1.7 m3 rigid tank contains air at 500 kPa and 50oC. A valve connected to the tank is now opened and air is allowed to escape until the pressure inside drops to 200 kPa. The air temperature during this process is maintained constant by an electric resistance heater placed in the tank. a. Determine the mass of air initially, m1 in kg. b. How much air escaped from the tank, mout in kg. c. Determine the electrical work...