SailNet Community - View Single Post - Myth of Condensation in Fuel Tanks
View Single Post
Old 06-22-2008
Maine Sail's Avatar
Maine Sail Maine Sail is offline
Senior Member
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,286
Thanks: 10
Thanked 117 Times in 85 Posts
Rep Power: 15
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
In order to condense water out of the atmosphere a surface must be much colder than the air. The problem for the condensation in tank theory is; how do we end up with a fuel tank that is much colder than the air? One way would be to have a very cold day that suddenly warms up dramatically, but when does this ever happen? The weather can turn cold very fast, but does not suddenly get very warm.

Apparently Mr. Pascoe has not spent enough time in Maine in the winter where we can see temp swings inside boats of more than 40-50 degrees from night time lows in the single digits to the am sun hitting the shrink wrap, or dark colored Awlgriped top sides, and warming the boats interior to 40 degrees in a mater of an hour or two.... That said I am not a real believer that physical water appears in tanks when they are left half full etc...

At 86F, an empty 200 gallon tank could contain 22.8 grams of water vapor, or 0.81 oz.
Yes or .81oz EVERY DAY THE CONDITIONS ARE RIGHT FOR CONDENSATION!!!!!!!! Someone remind him there are 365 days per year and tanks in boats should be expected to last well into the 30 year mark..?? Even if your tank could only hold .01 oz of water vapor over time it ADDS UP!!!!!

Seems to contradict his point....
-Maine Sail / CS-36T

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

© Images In Posts Property of Compass Marine Inc.

Last edited by Maine Sail; 08-28-2013 at 02:23 PM.
Reply With Quote Share with Facebook