Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 09-07-2009, 18:38   #16
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Well, I did it. Went out a bought a portable 12V frig.

I'm going to follow Paul's lead except I'll be freezing rectangular bottles so they fit closer together closing up that air gap. And if I can manage to freeze a whole bottle once in a while in the new frig. I'll have have the best of both worlds. A chip off the ole block

I bought the floor model because I have a spot that it'll fit into perfectly and can be secured without loosing precious space.
Attached Thumbnails
Click image for larger version

Name:	engel1.jpg
Views:	93
Size:	129.6 KB
ID:	8893   Click image for larger version

Name:	engel2.jpg
Views:	113
Size:	65.0 KB
ID:	8894  

__________________

__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Old 09-07-2009, 18:42   #17
Vendor
 
witzgall's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Eastern Shore, MD
Boat: Camper Nicholson 44 Ketch
Posts: 1,773
Drain the water, out of your icebox, and your body. One common misconception is when you outside and cold, you should keep the warm pee in your body, retaining it's heat. It takes more energy to keep it warm then what you lose buy _issing it out.

Just a sidebar....
__________________

__________________
witzgall is offline   Reply With Quote
Old 09-07-2009, 21:40   #18
Registered User

Join Date: Nov 2006
Posts: 257
The mythbusters or some other tv show tested the drain water vs. leave it in question. The clear winner was the cooler with the ice and water. Think about it in terms of the overall cold mass being reduced by draining out the water. Obviously, you want more cold mass than less.

Brett
__________________
LtBrett is offline   Reply With Quote
Old 09-07-2009, 23:31   #19
Senior Cruiser

Cruisers Forum Supporter

Join Date: Apr 2008
Posts: 769
Quote:
Originally Posted by LtBrett View Post
The mythbusters or some other tv show tested the drain water vs. leave it in question. The clear winner was the cooler with the ice and water. Think about it in terms of the overall cold mass being reduced by draining out the water. Obviously, you want more cold mass than less.

Brett
^correct. Water is a liquid. It will both heat up and cool down slower than air (a gas). The melted ice in your cooler will be warmer than the unmelted ice, but cooler than the surrounding air. Long story short -leave the water.

As for urine... your surrounding body is mostly liquid (er.. some gas, I suppose). I'm not an MD, but I doubt emptying your urine filled bladder will leave you with a gas filled one... just a collapsed empty one, surrounded by mostly body temperature water. But... the urine will add some liquid mass to you, and it should hold heat. I would imagine the effect is minimal, though. I weigh 170lbs, and piss at most a pint at a time.
__________________
anotherT34C is offline   Reply With Quote
Old 10-07-2009, 00:43   #20
Registered User
 
john540's Avatar

Join Date: May 2008
Location: Paradise Cay
Boat: Hylas 47
Posts: 167
Quote:
Originally Posted by LtBrett View Post
The mythbusters or some other tv show tested the drain water vs. leave it in question. The clear winner was the cooler with the ice and water. Think about it in terms of the overall cold mass being reduced by draining out the water. Obviously, you want more cold mass than less.

Brett
Can you provide a link? Every experiment I've ever seen shows the opposite!
__________________
john540 is offline   Reply With Quote
Old 10-07-2009, 05:03   #21
Don't ask if you can't handle it
 
sailorboy1's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: On the boat somewhere
Boat: Hunter 410
Posts: 12,305
Water freezes and melts at 32 degress F. All it is is a phase change (lots of energy). Any difference is just going to be due to heat transfer flux across the container. But it isn't going to be much. I was sure smeone would say that basic therodymanics doesn't apply. The reason your ice cube in a glass has a difference is that the air is a better insulator than the water. But it would be false to drain the water and lose all that thermal mass of the cold water.
__________________
sailorboy1 is offline   Reply With Quote
Old 10-07-2009, 07:36   #22
Moderator Emeritus
 
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Quote:
The mythbusters or some other tv show tested the drain water vs. leave it in question.
Short term it is true but long term it becomes yet another mass to keep cold. Ice is colder than ice water at least in terms of cooling power. The phase change is the bigger boost. When you add ice would be a good time to drain the water. The water absorbs the energy just as easily as all the food and conducts the outside heat from the interiors walls of the ice box.
__________________
Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 10-07-2009, 08:03   #23
CF Adviser
 
Bash's Avatar

Cruisers Forum Supporter

Join Date: Dec 2008
Location: sausalito
Boat: 14 meter sloop
Posts: 7,260
rectangular bottles.

Quote:
Originally Posted by delmarrey View Post
I'm going to follow Paul's lead except I'll be freezing rectangular bottles so they fit closer together closing up that air gap.
Before putting together a solar/wind charging array, I used to use gallon milk cartons to get through a week-long cruise to the hot.

Now we just let the freezer and fridge run their little hearts out. Takes about 80 amps a day to keep them happy in the hot, but we've got amps to spare at this point.
__________________
cruising is entirely about showing up--in boat shoes.
Bash is offline   Reply With Quote
Old 10-07-2009, 09:02   #24
Registered User

Join Date: Nov 2006
Posts: 257
Quote:
Originally Posted by john540 View Post
Can you provide a link? Every experiment I've ever seen shows the opposite!
I took a quick look, but couldn't find the episode. But I did find a neat explanation. Physics still apply to beer coolers.

Re: SHOULD YOU DRAIN THE WATER FROM A COOLER TO KEEP FOOD FRESHER OR LEAVE IN?

Brett
__________________
LtBrett is offline   Reply With Quote
Old 10-07-2009, 09:20   #25
Registered User

Join Date: Mar 2008
Location: Houston TX
Boat: Pacific Seacraft 25 "Turtle"
Posts: 364
Images: 35
ENGEL. The only word in small 12vdc/110vac fridge/freezers. Mine sips power(2.5amps) and keeps my beer at 29F even when the cabin is over 100f (no A/C). I power it with an 85watt solar panel and my(noisy?) Airx 400watt(when theres enough wind) turbine. I have 2 160aH batteries and have never seen them get anywhere near low. The ENGEL is expensive but IMHO worth every cent when not having to worry about ice and the space it takes up. More space= more beer=more happy me..............m
__________________
I must go down to the sea again.........
cantxsailor is offline   Reply With Quote
Old 11-07-2009, 15:41   #26
Senior Cruiser
 
sandy daugherty's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: near Annapolis
Boat: PDQ 36 & Atlantic 42
Posts: 1,178
Practical Sailor Magazine just published a factual evaluation of three refrigeration systems.
__________________
sandy daugherty is offline   Reply With Quote
Old 12-07-2009, 08:48   #27
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,572
Images: 240
Quote:
Originally Posted by sandy daugherty View Post
Practical Sailor Magazine just published a factual evaluation of three refrigeration systems.
The report I saw was for Coolers*, not refrigeration.

Practical Sailor’s “Ice Chest*” Test Results:
http://www.engel-usa.com/PS0908_BigC...nt0808_WEB.pdf
__________________

__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is online now   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
The Ice Is Coming . . . irwinsailor Great Lakes 46 28-09-2009 07:04
Making Ice Arizona Provisioning: Food & Drink 38 16-09-2009 20:36
Water intake for ice box compressor - 12 refigeration sailingpeanut Plumbing Systems and Fixtures 5 16-08-2008 03:30
ice irwinsailor Great Lakes 5 09-12-2005 18:35
The ice is leaving? witchcraft Great Lakes 3 25-03-2005 07:16



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 04:34.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.