Calculate outlet mole fraction, Physics

An air stream is saturated with a vapor (B) at 130°F and 1 atm pressure.  It is cooled down to 80°F where some of the B is condensed and separated from the vapor stream.  The remaining vapor stream is then reheated back to 130°F.

a) What is the mole fraction of B in the air coming out of the process?

b) For an inlet ?ow rate of 2000 ft 3/min of air saturated with B, what would be the ?ow rate of the liquid B stream (lb/min)?

c) If the process could cool the stream down to 50°F instead of 80°F, what would be the outlet mole fraction of B in this case?


 Vapor Pressure of B at    80°F = 0.5067 psia
 Vapor Pressure of B at  130°F = 2.221 psia
 MW of B = 20
 Heat capacity of liquid B = 0.87 (btu)/(lb)(°F)

Posted Date: 3/9/2013 5:02:33 AM | Location : United States

Your posts are moderated
Related Questions
Illustrate Gibbs - Helmoltz equation. What are its applications? A Heat engine operating between temperatures 300 K and 500 K rejects 6 Kcal of heat to the sink. How much heat i

CPH has rest mass, so how it explained by relativity? Answer; never can we see CPH at rest condition. CPH moves faster than light.

N-Type Substances: When a small quantity of Arsenic or Phosphorous (group VA elements) is added to silicon or Germanium, it becomes good conductor of negative charges, such a s

What is fusion? It is a nuclear reaction in which two nuclei join to form larger (with nearly combined mass) nuclei. It discharges lot of energy. Sun and stars discharge energy

What is meant by gravitational law?

Explain Buoyancy in Air The same buoyancy happens in air. This is how hot air balloons fly. By heating the air and lowering the density of the air in the balloon, the balloon f

A thin isotropic metal plate is subjected to the plane stress state shown (properties of the metal are: E = 10x10 6 psi and ν = 0.250). A uniaxial strain gage is mounted on the pl

definition, Working principal, applications ??

Q. Explain why does heated air expand? Answer:- Temperature is habitually defined as the average thermal energy of the substance at hand. Therefore the hotter a substance