Standard State enthalpy

aminhgn · May 22, 2019, 14:11

Hi,

I am modeling water and air evaporation. I read that I can use standard state enthalpy to model latent heat. Water vapor and water SSE should be defined somehow the difference between them become latent heat. So, if we consider that the SSE is 43999434 J/Kmol, how should I define this for both of them? and what is the sign of them (negative, positive)?

Thanks,

Amin

vivek162 · May 29, 2019, 17:34

set the standard stater enthalpy for water to zero and put all latent heat on the vapor side

May 22, 2019, 14:11	Standard State enthalpy	#1
aminhgn New Member Join Date: Jul 2018 Posts: 29 Rep Power: 8	Hi, I am modeling water and air evaporation. I read that I can use standard state enthalpy to model latent heat. Water vapor and water SSE should be defined somehow the difference between them become latent heat. So, if we consider that the SSE is 43999434 J/Kmol, how should I define this for both of them? and what is the sign of them (negative, positive)? Thanks, Amin

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May 29, 2019, 17:34		#2
vivek162 New Member vivek Join Date: Aug 2018 Posts: 14 Rep Power: 8	set the standard stater enthalpy for water to zero and put all latent heat on the vapor side