Author Topic: Distilling  (Read 3395 times)

AvastMH

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Distilling
« on: August 18, 2012, 06:25:48 pm »
Ahoy there all you hearty sea dogs,
Avast and shiver your timbers, scratch your doughty heads and be pleased to tell me about this if you will - there's a lot of distilling going on on this page - is this likely to be for water to drink - and why mention it (because of fire hazard)? The Rodgers is under sail (though only He who sails the celestial barque knows where they are  ::) ::) ::)).
http://oldweather.s3.amazonaws.com/ow3/USS%20Rodgers/Rodgers_1881/b001of010_0039_1.jpg
 Thank'ee kindly,  ;D ;D ;D

Randi

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Re: Distilling
« Reply #1 on: August 18, 2012, 06:44:27 pm »
Probably some for drinking, but mostly for the engines. We do use sail + steam!
Steam engines require fresh water; they can't use sea water because of the corrosion.

Dean

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Re: Distilling
« Reply #2 on: August 18, 2012, 07:46:03 pm »
Probably some for drinking, but mostly for the engines. We do use sail + steam!
Steam engines require fresh water; they can't use sea water because of the corrosion.

It's not only the corrosion. Salt water when heated -- the water boils and the salt would be left. It would clog the tubes in the boilers and either render the engine plugged an unusable OR there could be enough pressure build up to explode the boiler!

 :o

Tegwen

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Re: Distilling
« Reply #3 on: August 18, 2012, 10:17:17 pm »
As others have said, almost certainly distilling sea water to remove salt to give water both for the boilers and for drinking.

Pommy Stuart

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Re: Distilling
« Reply #4 on: August 18, 2012, 10:20:44 pm »
It is a pity they did not fill in the water section on the previous page, that would answer your question.

studentforever

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Re: Distilling
« Reply #5 on: August 18, 2012, 10:38:45 pm »
Come on, that would make it too easy!

 ;)

Janet Jaguar

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Re: Distilling
« Reply #6 on: August 18, 2012, 10:41:38 pm »
Joan, I think you are only the second forum member to ask about that.  This is what surfaced in cyber-space the last time. :)

Being purely a landlubber whose curiosity was caught by your question, I googled on Bing Seach and found an 1873 article on exactly this - they condensed their own steam, feeding the distilled pure water back into the boilers to effectively redissolve the salts from the original sea water.  And also something called "Blowing Out or Brining the Boilers" to remove deposits.

I think, if I understand my skimming of this.  I didn't read it all.

http://www.aandc.org/research/salt_in_marine_boilers.html

AvastMH

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Re: Distilling
« Reply #7 on: August 18, 2012, 11:13:01 pm »
Thanks Janet! It made very interesting reading..but I didn't stop to answer the questions at the end (tut tut!  ::))
We'll all be sooo clever at the end of all of this!   ;)
Joan  ;D
« Last Edit: August 18, 2012, 11:15:13 pm by AvastMH »

Janet Jaguar

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Re: Distilling
« Reply #8 on: August 19, 2012, 12:02:49 am »
I never read far enough to there were questions at the end!! 8)

AvastMH

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Re: Distilling
« Reply #9 on: August 19, 2012, 12:24:24 am »
They are a bit scarey   ..perfect if you've run out of volumising shampoo..well they made my hair stand on end anyway.  My School physics is just too long ago... ::) ;D

Pommy Stuart

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Re: Distilling
« Reply #10 on: August 19, 2012, 02:24:03 am »
I never read far enough to there were questions at the end!! 8)

Janet.
I will remember to put the questions FIRST next time.  ;D

Janet Jaguar

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Re: Distilling
« Reply #11 on: August 19, 2012, 02:44:17 am »
Not needed unless you are giving me a 14 page engineering manual. ;D

AvastMH

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Re: Distilling
« Reply #12 on: August 19, 2012, 10:11:08 am »
Oh and 'thank you' to everyone else that replied!   ;D
Dean - loved your explosion  ;D ;D ;D

Craig

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Re: Distilling
« Reply #13 on: August 19, 2012, 10:23:43 am »
I like question #14:  What are the remedies against priming, and what do you mean by priming? can you account for it taking place ?

I hope nobody here is guilty of priming.  :D

AvastMH

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Re: Distilling
« Reply #14 on: August 19, 2012, 10:36:34 am »
I mostly liked 2 since it gives you the answer (teeheehee), but I also liked 10:
10. Give an analysis of sea water, and state clearly what is the amount of solid matter in it.
which should have come with the chance to reply 'in a woolley not quite sure sort of way' for marks other than Honours.  ;D ;D