Calculating dissolved oxygen content of water given T and P
Calculating dissolved oxygen content of water given T and P
(OP)
Hi,
I'm just wondering if it's possible to calculate the oxygen content of water given the temperature, pressure and enthalpy. I've tried google but I can only find things like this: http://www .oroboros. at/fileadm in/user... /2.4.A-O2- Calib-Solu bility.pdf which only deal with low temperatures.
I'm trying to calculate the oxygen content of the feedwater from a deaerator, the only info I have is regular thermodynamic properties like T,P,H, flow rate.
Sorry if this is the wrong forum, wasn't sure of the best place to post.
Thanks.
I'm just wondering if it's possible to calculate the oxygen content of water given the temperature, pressure and enthalpy. I've tried google but I can only find things like this: http://www
I'm trying to calculate the oxygen content of the feedwater from a deaerator, the only info I have is regular thermodynamic properties like T,P,H, flow rate.
Sorry if this is the wrong forum, wasn't sure of the best place to post.
Thanks.





RE: Calculating dissolved oxygen content of water given T and P
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RE: Calculating dissolved oxygen content of water given T and P
Temperature effects are just weird. I have never found two sets of experiments that have similar shapes for the adjustment curves. I have found about the same number of researchers that say the "constant" increases with increasing temperature as say the "constant" decreases with increasing temperature. One PhD candidate suggested that there is a different curve for each bar of pressure change and he provided a few examples that didn't seem related to each other at all.
David Simpson, PE
MuleShoe Engineering
www.muleshoe-eng.com
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RE: Calculating dissolved oxygen content of water given T and P
Thanks to both of you for the help btw.
RE: Calculating dissolved oxygen content of water given T and P
Also, just because you bring water to a T & P, doesn't mean that the air or O2 will come out on its own accord. That is why Deaerators have trays or sprays; to maximize water surface area to the heating and scrubbing steam so that the noncondensables can be liberated.
rmw
RE: Calculating dissolved oxygen content of water given T and P
It is amazing to me that dissolved oxygen is the gathering companies biggest issue today, but NACE hasn't has a paper on it in years (as of early 2009, I'm not sure what has been published in the last 18 months). You might look at NACE's e-library for recent papers on the subject.
David