For power washing, what psi is needed for cleaning barnacles off a boat bottom?
110015
At least 3000 psi.  Recommend at least 180 degree water also.
562729
www.activated-carbon.com\nthis website should help
935029
put a few drops of rubbing alcohol in and it will dry the water up.
440473
Hey Jake!  When I lived in Ocala, FL back in the late 80's I had a Chris Craft boat with a fiberglass hull.  To protect the hull and the finish I would wash the outside and deck with a good degreaser (Greased Lightning) and after-wards apply a product called Sta-Brite.  It is a wax, not sure if it was a silicone base or not but it really repelled the algae and keep the gel-coat/finish shiny\n\nHyway
579981
Iron and water.  Just wash the sand off the iron.
1148898
For that quantity, check with Aquadynne. They may be able to help you:\n\nhttp://www.aquadyne.com.au/home.php
1131518
drain your pool to below the stain and scrub it with bleach
711392
If its just proof-of-concept, could you use the pressure of a tank of liquid CO2 to pressurize your vessel with CO2?? Add some liquid CO2  (or even just some dry ice!!) to your vessel from the tank and warm it up to get the desired pressure?\n\nOr possible collaborate with somebody who does CO2 cleaning research?? You might be able to get some preliminary data cheaper by renting their equipment than building your own.
248752
you could use hot water and soap to clean your bike
834758
If you don't need something exact, just take the air off the top of a container of bleach.  At ppb level if you need something exact, you will need to get a compressed gas company to make it for you.
611797
This will definitely improve your performance.  A light shower of water should clean out the dirt/sand (don't spray a super fast hose stream of water at the components or you could blast the grease out of the bearings).\n\nAfter washing it with a gentle stream of water, you should dry it, and then apply some wet lube (I use finish line personally) to the entire drive train.\n\nGood luck.
941013
Hi. The most efficient way would be to bypass the power to the pump used to raise the water in the first place and use it directly. This would eliminate friction losses and generator losses.
532427
With a water softener.\n\nhttp://en.wikipedia.org/wiki/Water_softener
496939
in the middle of the sea on  a small boat.... I dont know.  On a ship or at a lot of resorts there is one common way... Reverse Osmosis.  Plain and simple, it's pushing the water through a series of filtrations... multimedia and then through membranes at high pressures.  It is then treated with a variety of chemicals.\n\nThe old way to do it on ships is through multi-staged flash-type distilling plants where the water is boiled at 68F-72F under a vacuum and then treated with a Brominator.
864505
Windex works, so does rubbing alcohol. Use paper towel.
700454
One way to do that for relatively small volumes of water is to force the sea water through a special membrane filter under high pressure. The filter membrane must be constructed so that its holes are large enough to just pass a water molecule, but not large enough to pass metal\nmolecules, salt molecules, algae, etc. The result would be fresh clean water with a lot of brine solution left in the pressurized tank that needs to be dumped.\n\nAnother process which is more poractical for large volumes of fresh water production is electrolisis. In that process, electrical current is passed through the water to break it down into its basic elements such as hydrogen and oxygen (and all the other junk that is left over).\n\nOnce the hydrogen and oxygen are collected and recombined, the result is pure fresh water. Again, the vat or tank holding the original sea water now has a heavy brine solution which must be disposed of somehow. Most any use of sea water to produce fresh water will generate a lot of salty brine by-product that could poison sweet earth in the vicinity if it is merely dumped.
1051954
All you need to do is know the density of water- not too difficult to find! THe psi necessary to support a column then must match the weight of that column. So, if a column is 1inch in area and Hinches high, if you know D the density of water per cubic inch in pounds, the height of the column in inches times this value is the psi needed.\n\nPressure psi=H*D\n\nThis also works for metric, just use cms and kgs as the base sizes.