|
|
|
|
|||||
|
||||||
From: ahmet erkan (no email)
Date: Fri Aug 18 2006 - 08:29:57 EDT
>it is a good thing to
>include only enough of the original message to remind folks of what the
>thread is about. as the great proffesor strunk once said,...............
Kudos to the great prof.
Back to subject of Watermakers :
>filtered water is fed to the input of
>the high pressure pump which is the same sort of three cylinder pump used
>in pressure washers, then to the membrane housings which may be several in
>series, then to a pressure relief valve you set to 800 or so psi depending
>on conditions, then overboard.
The process makes sense except I can't figure out how to determine the
optimum ratio of discharge overboard per unit of product generation to
regulate the salinity on the high side of the membrane? 1 : 1 ? Also, would
the efficiency be better if the 800psi discharge was to go into a water
driven engine and helped the main HP pump? Do they already have such systems
on big ships? How much of an impact on efficiency ? How about no discharge
overboard but periodic back flush cycles ?
If we are going to integrate our own watermakers, we might as well learn all
the details. It don't sound too easy with 800psi etc but not rocket science
either.
Maybe Norm or the person with the home RO systems experience can comment?
Thanks in advance,
Ahmet
SV8827
___________________________________________________________________________
|| The Live-Aboard List : send a "subscribe" or "unsubscribe" request ||
|| in body of message to: ||
|