Math,volume question

[Ed Donnelly]

Does anyone know, how many cubic inches in a gallon of water??? :banghead: ..Ed

[Lenny]

There are 231 cubic inches in 1 US gallon

There are 277.42 cubic inches in 1 imperial gallon


The imperial (Canadian) gallon has a capacity of 277.274 cubic inches; and a gallon, as above, weighs 10 pounds

1 US gallon weighs 8.33 lbs.

Ed, these are H2O weights.

[Cuda]

Ed, these are H2O weights.

At what temp?? :wink:

[Ed Donnelly]

Thank you for the answer.. I didn't think temp. entered into the picture.So 16'wide by 32' long by 6' deep =? gals..Ed
P.S. math is not my forte.. You should see me trying to convert b.t.u.h x cubic metres. cubic feet is a snap

[rayjay]

Ed, Building a test tank for your boats? :rlol:

rayjay

[rayjay]

Oh yeah, it's 3,072 cu.ft. or 5,308,416 cu.in. or 22,980 US Gal. or 19,135 IMP Gal..

So, a test tank with built in dyno? WOW!!! :yippie:

rayjay

[Ed Donnelly]

rayjay; No, I am trying to size a flat plate heat exchanger.Customer has 250 h.p. boiler and has to heat said volume of glycol from ambient to 150 F in 6 hrs. Customer is Allied Signal. You would think that one of their hundred or so engineers could figure this out for me...Ed

[rayjay]

Ed, I like the test tank idea better! I was looking forward to seeing how it worked!! :yes:

rayjay

PS: Please recheck my math, I've been semi-retired now for three and a half months and my mind is turning to mush. No wait, actually it was pretty mushy before.... Think I am going to look for a job and get back to work on something other than the house. :hyper:

[gcarter]

Think I am going to look for a job and get back to work on something other than the house. :hyper:
If you want to stay busy, Rayjay, start a business, you'll never short of something to do again.

George

[Cuda]

I was just messin' with Lenny about the weight of the water. It's just one of those oddball facts that stuck in my mind from high school physics. Water is at it's most dense point at 4 degrees C. :wink:

[Cuda]

It's at it's most dense, but it is still a gallon of water, wont the weight be the same??
:bonk: :confused: :boggled: :boggled:


Nope, warm water weighs less, since it is less dense.

[gcarter]

It's at it's most dense, but it is still a gallon of water, wont the weight be the same??
:bonk: :confused: :boggled: :boggled:
You would no longer have a gallon.
Back in the '80's, Formula 1 cars had to carry enough fuel to go two hours ( the time for the race) so they filled the fuel tank cryogenically, every mL counts. :spongebob

George

[Cuda]

You would no longer have a gallon.

George

I think what you are saying is if you have a gallon of warm water and cooled it to 4 C, the same water would not be a gallon.

[txtaz]

Actually, a gallon of water weights the same no matter what the temp. But the volume is a different thing. After it freezes, it takes up more volumn. Before that point, it gradually takes up less. This is all considering that pressure is kept constant.
Wes

[Cuda]

Actually, a gallon of water weights the same no matter what the temp. But the volume is a different thing. After it freezes, it takes up more volumn. Before that point, it gradually takes up less. This is all considering that pressure is kept constant.
Wes

Actually, a gallon is a measurement of volume, so by definition, once it takes up less space, it is no longer a gallon.

[gcarter]

Cuda wins the prize!
The thing about my fuel analogy is since fuel doesn't freeze, the process continues, i.e. it's constantly taking up less space, but the weight stays the same.
So, temp DOES count. I suppose thats why so many processes are defined at 70+/- *.

George