- #1
dbag123
- 76
- 3
- Homework Statement
- Calculate the amount of water vapor when 4m^3/min or 25C air is cooled to 20C. How much vapor is condensed to water in 1 hour and how much of the vapor is still in the system.
- Relevant Equations
- pV/T=c
Hello
4m3/min is 240m3 /hr. Temperature is 293K, at 25C the amount of water is 22.8g/m3 and at 20C it is 17.1g/m3. Relative humidity is 70% and absolute pressure 9bar.
Solution:
@ 25C
relative humidity lowers the water content from 22.8 to 15,96g/m3 so in total 3830.4g/hr
240m3 or air is compressed to 1/9, so 26,67m3 and in that compressed air the amount of water vapor would be 608,08 g every hour
total amount of water 3830,4g/hr, in vapor its 608,08g and in solid water 3232,3g/hr
@20C
17,1g/m3 to 11,97g/m3 due to relative humidity. total amount of water is 2872.8g
then volume is compressed to 26.67m3 actually there is in compressed air 107.73g/m3 so the amount of vapor in compressed air would be 17.1g/m3*26.67m3 or 455.9g. and in form of water 2416.9g
How does this tell me the amount of water condensed or how much of the vapor is in form of liquid water during 1 hour from temperature of 25C to 20C?
4m3/min is 240m3 /hr. Temperature is 293K, at 25C the amount of water is 22.8g/m3 and at 20C it is 17.1g/m3. Relative humidity is 70% and absolute pressure 9bar.
Solution:
@ 25C
relative humidity lowers the water content from 22.8 to 15,96g/m3 so in total 3830.4g/hr
240m3 or air is compressed to 1/9, so 26,67m3 and in that compressed air the amount of water vapor would be 608,08 g every hour
total amount of water 3830,4g/hr, in vapor its 608,08g and in solid water 3232,3g/hr
@20C
17,1g/m3 to 11,97g/m3 due to relative humidity. total amount of water is 2872.8g
then volume is compressed to 26.67m3 actually there is in compressed air 107.73g/m3 so the amount of vapor in compressed air would be 17.1g/m3*26.67m3 or 455.9g. and in form of water 2416.9g
How does this tell me the amount of water condensed or how much of the vapor is in form of liquid water during 1 hour from temperature of 25C to 20C?