- #1
pranj5
- 386
- 5
I hope most here are familiar with vortex tube i.e. Ranque-Hilsch tube. I just want to guess if humid air used. We can get some idea about functionality of vortex tube from this http://www.airtx.com/how-does-a-vortex-tube-work.htm. Now take the example for the lowest pressure level mentioned in the page. As per this page, when the cold: hot ratio is 4:!, then the temperature of the hot flow is 107°C above the inlet temperature. That means if the inlet temperature is at around 30°C, then the temperature at the hotter end is 137°C and the colder end will be at 2.5°C. Suppose 100% humid air compressed isothermally to 20 psiG (the pressure level mentioned) and then used in the vortex tube.
Now, at 30°C, the moisture content of 100% humid air is 30.32 g/m³ while at 2.5°C, it's 5.74 g/m³. That simple means that the moisture content of the hot flow is 24.58 g/m³. All the information given about moisture content of humid air has been collected from this page.
What made above is just an assumption because I am not sure whether the cold air can be 100% humid or not. It's highly possible that all the moisture will be concentrated at the hotter end as water vapour molecules are lighter than both Nitrogen and Oxygen. I am requesting those who have done some work on vortex tube can show me light in this regards,
Now, at 30°C, the moisture content of 100% humid air is 30.32 g/m³ while at 2.5°C, it's 5.74 g/m³. That simple means that the moisture content of the hot flow is 24.58 g/m³. All the information given about moisture content of humid air has been collected from this page.
What made above is just an assumption because I am not sure whether the cold air can be 100% humid or not. It's highly possible that all the moisture will be concentrated at the hotter end as water vapour molecules are lighter than both Nitrogen and Oxygen. I am requesting those who have done some work on vortex tube can show me light in this regards,