Question

Moist air enters a dehumidifier at the rate of 0.26 lbm/s. Water drains out of the...

Moist air enters a dehumidifier at the rate of 0.26 lbm/s. Water drains out of the device at a rate of 23 lbm/hr. Determine the velocity, in ft/s, at which the (less moist) air exits the device if the area of the exit port is 1.04 ft2. Assume that the density of the less moist air is 2.5 · 10-3 lbm/ft3.

Homework Answers

Answer #1

So the velocity at which air exit the device is 97.53 ft/sec.

Thank you.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Moist air at 30 °C and 50% relative humidity enters a dehumidifier operating at steady state...
Moist air at 30 °C and 50% relative humidity enters a dehumidifier operating at steady state with a mass flow rate of 319.35 kg/min. The moist air passes over a cooling coil and water vapor condenses. Condensate (condensed water) exits at 10 °C. Saturated moist air exits in a separate stream at the same temperature. The pressure remains constant at 1 bar. Determine (a) the rate at which water is condensed, in kg/min, and (b) the heat transfer rate during...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady...
Air at 95°F, 1 atm, and 10% relative humidity enters an evaporative cooler operating at steady state. The volumetric flow rate of the incoming air is 1765 ft3/min. Liquid water at 68°F enters the cooler and fully evaporates. Moist air exits the cooler at 70°F, 1 atm. There is no significant heat transfer between the device and its surroundings and kinetic and potential energy effects can be neglected. a)Determine the mass flow rate of the dry air in lb(dry air)/min....
Air is heated as it flows through a constant diameter tube. The air enters the tube...
Air is heated as it flows through a constant diameter tube. The air enters the tube at 50 psia and 80 F with an average velocity of 10 ft/s at the entrance. The air leaves at 45 psia and 255 F. a) Sketch the control volume b) Determine the average velocity of the air (ft/s) at the exit c) If 23 lbm/min of air is to be heated, what diameter (in.) tube is required?
The bottom of a water tank leaks at a rate given by Q=0.61A_cs √(2ΔP/ρ) where Q=...
The bottom of a water tank leaks at a rate given by Q=0.61A_cs √(2ΔP/ρ) where Q= rate of leakage, ft3/s A_cs= cross-sectional area of the leak, ft2 ΔP= pressure difference across the leak, lbf/ft3 ρ= fluid density, lbm/ft3 The constant, 0.61, is dimensionless a) If A_cs is 10–5 ft2, ΔP is 2500 lbf/ft2, and ρ is 62.4 lbm/ft3, what is Q in gal/day? b) If you wanted to convert this equation to SI units (Q in m3/s, A_cs in m2,...
Air at 790kPa, 573oC and 8m/s enters an adiabatic nozzle at a rate of 1.95kg/s and...
Air at 790kPa, 573oC and 8m/s enters an adiabatic nozzle at a rate of 1.95kg/s and leaves at 101oC and 177kPa pressure. If the nozzle is placed horizontal hence the inlet and outlet are at the same height, determine the exit velocity of the air (m/s). Assume the cp air = 1.005kJ/kg.K.
Hot water enters a counter-flow double-pipe heat exchanger at 180F with a velocity of 5 ft/s....
Hot water enters a counter-flow double-pipe heat exchanger at 180F with a velocity of 5 ft/s. Cold water at 80F flows at 3 ft/s in the outer section of the exchanger. The diameter of the inner pipe is 1 inch, the pipe wall thickness is 1/8", and the outer pipe diameter is 2 inches. The overall heat transfer coefficient times area per unit length UA/L = 150 Btu/hr-ft-F. If the exchanger is 16 feet long, what is the exit temperature...
Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a...
Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a compressor operating at steady state and exits at 3 bar. During the compressing from inlet to exit, the air experiences a polytropic process as PV^n=constant. m=6, n=1.48. (1) Determine the power required by the compressor. (2) Determine the heat transfer between the compressor and the surrounding. (s) Determine the rate of exergy destruction. Kinetic and potential energy effects are negligible. Let T_0 = 300...
Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a...
Air at 1 bar, 295 K, and a mass flow rate of 0.7 kg/s enters a compressor operating at steady state and exits at 3 bar. During the compressing from inlet to exit, the air experiences a polytropic process as PV^n=constant. m=6, n=1.48 (1) Determine the power required by the compressor. (2) Determine the heat transfer between the compressor and the surrounding. (s) Determine the rate of exergy destruction. Kinetic and potential energy effects are negligible. Let T_0 = 300...
Water at a flow rate of 60 kg/s enters the shell-side of a baffled shell-and-tube heat...
Water at a flow rate of 60 kg/s enters the shell-side of a baffled shell-and-tube heat exchanger at 35 °C and leaves at 25 °C. The heat will be transferred to 150 kg/s of raw water coming from a supply at 15 °C. You are requested to design the heat exchanger for this purpose. A single shell and single tube pass is preferable. The tube diameter is ¾ in. (19 mm outer diameter with 16 mm inner diameter) and tubes...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT