:Talk:Flash evaporation

The article seemed to be focused only on the flash evaporation of a multi-component liquid and it did not discuss the evaporation of a single-component liquid at all. Also, some of the wording was confusing. Hence, I did an extensive re-write. I will complete the multi-component section with the next day or so. - mbeychok 05:11, 7 April 2006 (UTC)

:I just finished the complete revision and expansion of this article. - mbeychok 07:34, 8 April 2006 (UTC)

Is the fact that flash evaporators are isentropic true for both multi-component systems as well as single? What are some properties of all flash evaporators? 143.246.14.19 (talk) 18:07, 13 April 2010 (UTC)PhysicsStudent

:Glad you brought this up, because I erred in stating that the flash evaporation of a single-component liquid is isentropic. An adiabatic process is isentropic only if the process is reversible. I have corrected the article to state that the flash evaporation of a single-component liquid is isenthalpic. answer you In any event, the equation given for a single-component liquid is correct. mbeychok (talk) 22:11, 14 April 2010 (UTC)

::Now that I have checked the article history, I see that I originally wrote that flash evaporation of a single-component liquid was isenthalpic. The change to isentropic was made by an unregistered user on March 23, 2009. So the error was not mine after all. mbeychok (talk) 22:35, 14 April 2010 (UTC)

:::Whew, that's a relief... — Preceding unsigned comment added by 192.158.48.17 (talk) 12:42, 29 January 2015 (UTC)

Mass Balance of initial and final liquid and vapour

:$m\_i\; =\; m\_f$

:$m\_\{l,i\}\; =\; m\_\{v,f\}+m\_\{l,f\}$

Adiabatic energy balance

:$m\_\{l,i\}\; h\_\{l,i\}\; =\; m\_\{v,f\}\; h\_\{v,f\}+m\_\{l,f\}\; h\_\{l,f\}$

:$(m\_\{v,f\}+m\_\{l,f\})\; h\_\{l,i\}\; =\; m\_\{v,f\}\; h\_\{v,f\}+m\_\{l,f\}\; h\_\{l,f\}$

:$m\_\{l,f\}\; h\_\{l,i\}\; +\; m\_\{v,f\}\; h\_\{l,i\}\; =\; m\_\{v,f\}\; h\_\{v,f\}\; +\; m\_\{l,f\}\; h\_\{l,f\}$

:$m\_\{l,f\}\; h\_\{l,i\}\; -\; m\_\{l,f\}\; h\_\{l,f\}\; =\; m\_\{v,f\}\; h\_\{v,f\}\; -\; m\_\{v,f\}\; h\_\{l,i\}$

:$m\_\{l,f\}\; (h\_\{l,i\}\; -\; h\_\{l,f\})\; =\; m\_\{v,f\}\; (h\_\{v,f\}\; -\; h\_\{l,i\})$

:$\backslash frac\{(h\_\{l,i\}\; -\; h\_\{l,f\})\}\{(h\_\{v,f\}\; -\; h\_\{l,i\})\}\; =\; \backslash frac\{m\_\{v,f\}\}\{m\_\{l,f\}\}$

or in articles original notation

:$\backslash frac\{m\_\{v,f\}\}\{m\_\{l,f\}\}\; =\; \backslash frac\{H\_u^L\; -\; H\_d^L\}\{H\_d^V\; -\; H\_u^L\}$

The current article also suggests (from definition X = weight fraction vaporized) that X = m_vap ÷ m_total, where m_total = m_vap+m_liq, which is is the same definition as vapor quality. From the derivation, X should be defined as the 'ratio' of vaporised mass to remaining liquid.

:$X\; =\; \backslash frac\{m\_\{v,f\}\}\{m\_\{l,f\}\}$ — Preceding unsigned comment added by RedHotIceCube (talk • contribs) 14:15, 22 October 2015 (UTC)

Hello fellow Wikipedians,

I have just modified one external link on Flash evaporation. Please take a moment to review [https://en.wikipedia.org/w/index.php?diff=prev&oldid=803372324 my edit]. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20070314224424/http://www.escwa.org.lb/information/publications/edit/upload/tech-01-3-e.pdf to http://www.escwa.org.lb/information/publications/edit/upload/tech-01-3-e.pdf

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

{{sourcecheck|checked=false|needhelp=}}

Cheers.—InternetArchiveBot (Report bug) 03:20, 2 October 2017 (UTC)