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February 14, 2004, 02:05 |
EVAPORATION??!!!
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#1 |
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Hi. This is my last hope here. Do any body knows relations are equations for evaporation from liquid surface because of side-wall heat flux on the container(cylindrical) walls. the liquid and the vapor(gas) above the liquid are both of same fluid : HYDROGEN that is it single fluid, two-phase prob. with evap.
awaitng for a least response prasanth |
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February 27, 2004, 03:29 |
Re: EVAPORATION??!!!
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#2 |
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Hi,
Do you want to know the mass transfer rate equation?. FJ |
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February 27, 2004, 03:42 |
Re: EVAPORATION??!!!
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#3 |
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yeah for that single fluid, evaporation of liquid into its vapor. saturation temp dependent on vapor pressure. thanks and regards prasanth
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March 10, 2004, 02:00 |
Re: EVAPORATION??!!!
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#4 |
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Hi,
Generally mass transfer rate due to evaporation is D*M/R*(Pv/Tg - Pv_sat/Tb)/delta. Diffusion coeff(m2/s) M:Molecular Weight of vapor(kg/mol) R:Gas constant(J/kmol) Pv:Partial pressure of vapor at a wall adjacent cell. Tg:Temperature at a wall adjacent cell. Pv_sat:Stauration pressure of vapor(constant or a function of temperature) Tb:Temperature at a wall delta:cell hight. Thank you -- FJ |
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