All,
I can't find the equition in MERM for the problem 7 in 6 ms of TFS. I have no clue why they use that equition. I am very disappointed after I tried to work on 6ms based on Ramnares's strategy, because I have to read all solutions for each problems. I have no clue for some problem even though I read solution. I think I may need to change my exam date to next year . I have been out of school for 20 years without TFS background. It will be really appreciate to have some suggestions from you. By the why, here is problem 7:
The air in one large room is at 70f, 1.0 atm of pressure, and 80% relative humidity. A 50 ft long duct with a cross-sectional area of 2 ft2 connects this room to another at 60f, 1.0 atm, and 10% relative humidity. The diffusivity of water vapor in air is 1.0 ft2/hr. What is the rate of vapor transfer by diffusion between the two rooms?
I can't find the equition in MERM for the problem 7 in 6 ms of TFS. I have no clue why they use that equition. I am very disappointed after I tried to work on 6ms based on Ramnares's strategy, because I have to read all solutions for each problems. I have no clue for some problem even though I read solution. I think I may need to change my exam date to next year . I have been out of school for 20 years without TFS background. It will be really appreciate to have some suggestions from you. By the why, here is problem 7:
The air in one large room is at 70f, 1.0 atm of pressure, and 80% relative humidity. A 50 ft long duct with a cross-sectional area of 2 ft2 connects this room to another at 60f, 1.0 atm, and 10% relative humidity. The diffusivity of water vapor in air is 1.0 ft2/hr. What is the rate of vapor transfer by diffusion between the two rooms?