2 replies to this topic

[jeteranec1]

Good Morning,

 

My name is Julio Enrique Terán, I work at Universidad San Francisco de Quito, Ecuador.

 

Currently for one of my classes, I am working on a excel spreadsheet to calculate a single effect and triple effect evaporator for NaOH-water system and systems without boiling point rise (BPR).

 

An enthalpy concentration diagram is required to obtain enthalpy data at a certain temperature and concentration. I am researching about the diagram and the source where it came from.

 

I cannot find the models that allow some authors to construct this diagram.

 

Does some one know where I can find these models? Once I get these models, I would share the community my spread sheets.

 

Best Regards,

 

Julio Terán

[breizh]

Hi .

Probably good to seek in Kern " Process Heat transfer" and Perry "Chemical Engineering Handbook" .

Note : You will find charts on Google and  then you will be able to establish correlation using xcel .

 

Good luck

Breizh

Edited by breizh, 02 February 2016 - 06:40 PM.

[Napo]

Julio,

 

You can review the following articles:

 

Enthalpy-Concentration Chart Vapor Pressure Data, Haltenberger W., Industrial and Engineering Chemistry, Vol 36, No. 6, June, 1939, p. 783-786.

 

Thermophysical Properties of Aqueous NaOH-H2O at High Concentrations, Olsson J., et. al., International Journal of Thermophysics, Vol. 18, No. 3, 1997, p. 779-793.

 

I hope help you.

 

Napo.