Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-03-2014, 21:39   #1
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Compressed Co2 Pressurized Water

In my boat build planning, I've been thinking about plumbing.
The plan for a toilet is compost, so no water needed there,
but the bathroom sink, and the kitchen sink will need some water.

I'd like it to be real simple. One thought is to just use gravity, but that means the heavy water is above not below, so don't like that.
What I'm thinking is using a tank of compressed c02 to pressurized a 5 gallon tank of water under the sink, which could be refilled from a larger tank using compressed c02 to force it into the smaller tank.
I like the idea of no pumps to fail, electric or manual.

I have a soda fountain setup, and this is essentially how it works (but it carbonates too which I don't want). A have 3 of the 5 Gallon Cornelius Kegs,
and a couple aluminum c02 tanks. I'd probably get the lighter carbon fiber tanks to save weight.

My questions are does anyone do this?
How long would 5 gallons last in a kitchen faucet?
__________________

__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 03-03-2014, 22:15   #2
Sponsoring Vendor
 
HopCar's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 3,160
Re: Compressed Co2 Pressurized Water

I don't see why it wouldn't work, but it sounds a lot more complicated and expensive than installing a small electric or hand pump.

Rule makes some little submergible electric pumps I've seen used to supply water from a 5 gallon jug to a sink.

iL200 iL200 In-Line & Submersible Pump 12V > Submersible Pumps > Xylem Flow Control - Let's Solve Water.
__________________
Hopkins-Carter Marine Supplies & Fishing Tackle
What You Need, at the Price You Want...with Service!
HopCar is offline   Reply With Quote
Old 03-03-2014, 22:25   #3
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Compressed Co2 Pressurized Water

You say you don't want carbonated water but you are planning a system to do just that.
__________________
fstbttms is offline   Reply With Quote
Old 03-03-2014, 22:34   #4
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: Compressed Co2 Pressurized Water

Some quick research shows 5 gallons needs about 24grams of c02 to empty,
so a 10lb bottle of c02 would do 200 tanks of water before needing to be filled.

I have the equipment already as I indicated, but in any case, while it is clearly more expensive than an electric pump in the short term, my understanding and experience is water pumps have short lives.

C02 does not carbonate water with just pressure, it needs a 'carbonator' to do that, a special pump that mixes them together. But maybe in really really rough seas, there might be some carbonation of the water, then again I have a multihull.
__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 03-03-2014, 22:41   #5
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: Compressed Co2 Pressurized Water

If the co2 bottle leaks your going to be up the creek. Just use a whale foot pump. Simple. And spare kit is $22
__________________
sailorchic34 is offline   Reply With Quote
Old 03-03-2014, 22:42   #6
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Compressed Co2 Pressurized Water

Quote:
Originally Posted by nimblemotors View Post
C02 does not carbonate water with just pressure, it needs a 'carbonator' to do that, a special pump that mixes them together. But maybe in really really rough seas, there might be some carbonation of the water, then again I have a multihull.
No, the CO2 will go into solution when you pressurize the vessel the water is in. As a homebrewer for ten years, I can assure you that this is the case. It may not be seltzer water, but it won't be still either.
__________________
fstbttms is offline   Reply With Quote
Old 03-03-2014, 22:44   #7
Moderator
 
sailorchic34's Avatar

Cruisers Forum Supporter

Join Date: Feb 2011
Location: SF Bay Area
Boat: Islander 34
Posts: 4,812
Re: Compressed Co2 Pressurized Water

Got to agree with fsbttms on that.
__________________
sailorchic34 is offline   Reply With Quote
Old 03-03-2014, 22:44   #8
Registered User

Join Date: Feb 2012
Posts: 2,441
Re: Compressed Co2 Pressurized Water

Nitrogen?
__________________
Andrew Troup is offline   Reply With Quote
Old 03-03-2014, 22:45   #9
Registered User

Join Date: Feb 2012
Posts: 2,441
Re: Compressed Co2 Pressurized Water

... ... Air?
__________________
Andrew Troup is offline   Reply With Quote
Old 03-03-2014, 22:45   #10
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Compressed Co2 Pressurized Water

Quote:
Originally Posted by sailorchic34 View Post
If the co2 bottle leaks your going to be up the creek.
Yeah, it's probably not a good idea. The safest way to do what he envisons is with SCUBA tanks and pressurized breathing air.

Actually, I take that back. SCUBA tanks are pressurized to very high levels. Not sure how he would step that down to safely push water through the sytem.
__________________
fstbttms is offline   Reply With Quote
Old 03-03-2014, 22:58   #11
Registered User
 
nimblemotors's Avatar

Join Date: Apr 2011
Location: Sacramento, California
Boat: Solar 40ft Cat :)
Posts: 1,557
Re: Compressed Co2 Pressurized Water

>>Is is possible to use c02 to dispense regular non carbonated water from a keg that is at room temperature?

>> If the water is at room temperature, and you keep the dispensing line short and only apply as much pressure as you need to get water flowing (2-3 psi), there will be almost no carbonation

I said I have a soda fountain. I know exactly how much carbonation it creates without the carbonator. Almost none.
__________________
JackB
MiniMPPT Solar Controller
nimblemotors is offline   Reply With Quote
Old 03-03-2014, 23:10   #12
Marine Service Provider
 
fstbttms's Avatar

Cruisers Forum Supporter

Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 3,594
Re: Compressed Co2 Pressurized Water

Well, it's your dime. But a pressurized water tank on a boat is not a soda fountain. And (as mentioned before) a leaky CO2 tank in an enclosed space can be a death sentence.
__________________
fstbttms is offline   Reply With Quote
Old 03-03-2014, 23:24   #13
Registered User
 
Delancey's Avatar

Join Date: Oct 2011
Location: Miami, FL
Boat: sunk by irma
Posts: 3,462
Re: Compressed Co2 Pressurized Water

Bicycle pump? Seems a lot cheaper that a carbon fibre tank, might come in handy if you have a bike on board. But you said you didn't want any pumps, so I got nothin. Whale foot pump works for me everyday all day long FWIW.
__________________
Delancey is offline   Reply With Quote
Old 04-03-2014, 03:14   #14
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: Compressed Co2 Pressurized Water

My electric Jabsco VSD pump was installed in 2005 and has been in use full time since that, without any maintenance. It appears the OP needs the artistic approach to boat design
__________________
s/v Jedi is offline   Reply With Quote
Old 04-03-2014, 03:18   #15
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: Compressed Co2 Pressurized Water

Solution: buy two water pumps. By the time they fail, you'll be dead.

Dave


Sent from my iPad using Tapatalk
__________________

__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Reply

Tags
water

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




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 08:56.


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.