Need help with this lab... A college professor fills a 5 gallon bucket with wate
ID: 1533229 • Letter: N
Question
Need help with this lab...
A college professor fills a 5 gallon bucket with water in 20 seconds. The water temperature is 58 degree F. a. What is the water volumetric flow rate in units of ft^3/s b. What is the mass flow rate in units of lbm/s A storage tank rests on the ground and holds 11 gal of water at 50 degree F. An inlet to the tank provides water at 40 degree F flowing in at a rate of 3.8 lbm/s for 12 minutes. A different exit pipe of water at 60*F flows out at a rate of 2.5 lbm/s for 13 minutes. What is the final volume of water in the tank in gallons? A storage tank contains R-22 refrigerant as a saturated liquid at a temperature of -30 degree C. What is the mass flow rate to drain the tank through a drain pipe of diameter 0.025 m? The estimated velocity of the water is 1.75 m/s. Give your final answer in units of kg/s. Refrigerant R-22 flows through a throttling device. The inlet containing saturated vapor has a pressure of 5.25 bar. The exit pressure is 1.5 bar. What is the exit temperaExplanation / Answer
1)5 gallons = 0.668 ft^3 = 0.019m^3
a)Volume flow rate will be:
Q = 0.668/20 = 0.0334 ft^3/s
Hence, Q = 0.0334 ft^3/s
b)density = mass/volume
mass = density x volume = 1000 x 0.019 = 19 kg
m = 19 kg = 41.88 lb
mass flow rate will be:
Q' = 41.88/20 = 2.094 lbm/s
Q' = 2.094 lb/s