# Homework Help: Gas Mixture - Dew Point Temperature

1. Apr 2, 2017

### Reefy

1. The problem statement, all variables and given/known data

Only Number 1, not number 2

2. Relevant equations
Dew Point Temperature T = Saturated Temperated at Vapor Pressure

Partial Pressure = (mole fraction) x (Mixture Pressure)

3. The attempt at a solution

The dew point temperature is only dependent on the pressure of the water vapor in the mixture. This pressure is equal to

P (vapor) = 0.15 (100 kPa) = 15 kPa. Using the saturation tables, the temperature corresponding to this pressure is 53.97 degrees Celsius.

The 2nd part is where I am having difficulty. The temperature cools down to 43.97 degrees Celsius. Now I have to find the mass flow rate of the water to determine how much time it will take to collect 10kg of water. This means I need to determine the mass flow rate of the vapor too? I know the mole fractions add up to 100%

2. Apr 7, 2017

### PF_Help_Bot

Thanks for the thread! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post? The more details the better.