Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 25-02-2012, 14:15   #16
Registered User
 
Nicholson58's Avatar

Join Date: Jan 2011
Location: Live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 3,466
Images: 83
Re: Using an electric tea kettle to save propane?

Quote:
Originally Posted by Ocean Roads View Post
A smaller inverter should power a small tea kettle. I will have back up propane, but the goal is to conserve.

We have an electric french press that boils water (110 VAC 1500 watt) in a very short time. Big power suck for a short time but only the water is heated. Definitely have a small inverter if your primary inverter is large. BOB https://handybobsolar.wordpress.com/ has a lot to consider & some good help. His best choice is Morningstar sine 300. Inverters have a parasitic loss proportional to their size. If you only need a small inverter for most needs it may save power in the long run. Propane heat for boiling water is not so efficient. Lots of the available energy heats the cabin. You can also think about a direct solar cooker for those days at anchor with tropical sun. You can do a search on these but here is one example. Hot Pot Solar Cooker
__________________

__________________
Nicholson58 is offline   Reply With Quote
Old 27-02-2012, 01:51   #17
Registered User
 
svBeBe's Avatar

Join Date: Sep 2008
Location: from Houston, TX; currently berthed in Barcelona, headed west
Boat: Amel SM 53 - BeBe
Posts: 946
Re: Using an electric tea kettle to save propane?

We bought a small electric kettle, thinking it would be faster and save energy. But that thing uses 9 amps on 230v. That is a lot! Granted, it uses 9 amps for only a short time; but that is a big draw. At electricity rates of .35 euro per kwh, that seems a tad expensive. Propane is cheaper than electricity where we are currently docked. Don't think we will be using this electric kettle when at anchor unless the generator is running. But it will be nice to have when we are back in the tropics again. Hate heating up the entire saloon with the stove.

Judy
__________________

__________________
svBeBe is offline   Reply With Quote
Old 27-02-2012, 05:47   #18
Wayfaring Mariner
 
captain58sailin's Avatar

Cruisers Forum Supporter

Join Date: Mar 2009
Location: Homer, AK is my home port
Boat: Skookum 53'
Posts: 4,045
Images: 5
Re: Using an electric tea kettle to save propane?

Perhaps you could install a heat exchanger under your solar panels to preheat the water and lessen the amount of time = amp hours used to boil the water for tea.
__________________
" Wisdom; is your reward for surviving your mistakes"
captain58sailin is offline   Reply With Quote
Old 27-02-2012, 07:38   #19
Registered User
 
nitpik's Avatar

Join Date: Feb 2010
Location: Canada, North Channel of Lake Huron
Boat: 41' Colvin Gaff-rigged Schooner
Posts: 222
Send a message via Yahoo to nitpik Send a message via Skype™ to nitpik
Re: Using an electric tea kettle to save propane?

I don't like making too much use of the inverter - if I have it, I will use it, and I will use it for more and more things, 'til I run my batteries down.
However, I agree with using it for boiling small amounts of water, especially in warm climates. I just did a little semi-scientific experiment with small coffee makers. (I got excited when I found one that is rated at only 550 Watts) The results indicate that it doesn't make much difference how powerful the unit is.
Melitta 1000W - makes one mug in 1.8 minutes, using 30.0 W.hrs. of energy.
B&D 800W - makes one mug in 2.25 minutes, using 30.0 W.hrs. of energy.
Cuisinart 550W - makes one mug in 3.2 minutes, using 29.97 W.hrs. of energy!
So that is about 2.5 amps to make a full mug of "wake-up" (plus a bit for inverter losses) Seems to me like a good deal, rather than firing up "el diablo".
I agree with prior post that it is not the best idea to use a 3,000W inverter for a 600W appliance.
__________________
Some days you step in it ............... some days you don't.
nitpik is offline   Reply With Quote
Old 27-02-2012, 08:10   #20
Registered User
 
nitpik's Avatar

Join Date: Feb 2010
Location: Canada, North Channel of Lake Huron
Boat: 41' Colvin Gaff-rigged Schooner
Posts: 222
Send a message via Yahoo to nitpik Send a message via Skype™ to nitpik
Re: Using an electric tea kettle to save propane?

Just did another quick calculation. If two people are on board, and they each have just 4 mugs of coffee a day, that translates into almost 20 A.hrs. a day, just for coffee!
That's 4 to 5 hours of sun beating down on my little solar panel, just for my coffee. - doesn't sound very economical to me. So, I either get bigger solar panels so I can have my coffee (hey, some of you guys would get more solar just to have cold beer!), or I use my little iso-butane camp stove to make coffee.
The electrical implications of inverter use hit home!
__________________
Some days you step in it ............... some days you don't.
nitpik is offline   Reply With Quote
Old 27-02-2012, 08:25   #21
Registered User
 
capn_billl's Avatar

Join Date: Aug 2010
Location: Houston,Tx
Boat: Maxum 37'
Posts: 1,587
Re: Using an electric tea kettle to save propane?

Get one painted black, and leave it in the sun a while before plugging in, that will save half the energy. Another option is to preheat on top of engine.
__________________
capn_billl is offline   Reply With Quote
Old 27-02-2012, 13:55   #22
Registered User

Join Date: Aug 2008
Location: San Rafael, CA
Boat: Banjer 37 motorsailer
Posts: 41
Re: Using an electric tea kettle to save propane?

I am trying to get shore power off my boat, and minimize any electric use. As it sits dockside now, only the battery charger is on shore power, and I don't really even need that. I've removed the too small fridge and the electric coffee maker.

For my less electric dependent goals I would be looking at fire, I have propane, as do you, it is inexpensive and reliable, I would add another bottle, if I were to go away from where that fuel is readily available. I would either get more propane storage or look to other fuel choices, a small alcohol or kerosene stove comes to mind. Being portable you could take them on deck and not have any of the heat and humidity from the boiling water inside.

If you look up the pepsi can stove you will find instruction on building a very handy back packer style stove out of, you guessed it, a pepsi can. I haven't done that, and probably won't because propane is convenient and cheap around here. But I would at least experiment with something like the PCStove before I increased the demand on the electrics.

I would also find a way to preheat any water via solar. Something as simple as a 2 gallon clear, collapsible drinking water container would be the simplest, transfer that into a thermos when the sun goes down.
__________________
meuritt is offline   Reply With Quote
Old 27-02-2012, 16:37   #23
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: Using an electric tea kettle to save propane?

Quote:
Originally Posted by meuritt View Post
I am trying to get shore power off my boat, and minimize any electric use. As it sits dockside now, only the battery charger is on shore power, and I don't really even need that. I've removed the too small fridge and the electric coffee maker.

For my less electric dependent goals I would be looking at fire, I have propane, as do you, it is inexpensive and reliable, I would add another bottle, if I were to go away from where that fuel is readily available. I would either get more propane storage or look to other fuel choices, a small alcohol or kerosene stove comes to mind. Being portable you could take them on deck and not have any of the heat and humidity from the boiling water inside.

If you look up the pepsi can stove you will find instruction on building a very handy back packer style stove out of, you guessed it, a pepsi can. I haven't done that, and probably won't because propane is convenient and cheap around here. But I would at least experiment with something like the PCStove before I increased the demand on the electrics.

I would also find a way to preheat any water via solar. Something as simple as a 2 gallon clear, collapsible drinking water container would be the simplest, transfer that into a thermos when the sun goes down.
I think you're not roughing it enough yet... better do away with the toilet too which means you can get rid of the holding tank. Out with the engine, outboard etc... it's all stuff you don't need and which keeps you dependent on fossil fuels. Propane? no way, a fire from some wood burns the same and is free and it frees you from refill station dependancy.

We'all've become a bit weak... must man up and rough it out aboard our boats!



ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 27-02-2012, 16:47   #24
Moderator Emeritus
 
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
Quote:
Originally Posted by s/v Jedi

I think you're not roughing it enough yet... better do away with the toilet too which means you can get rid of the holding tank. Out with the engine, outboard etc... it's all stuff you don't need and which keeps you dependent on fossil fuels. Propane? no way, a fire from some wood burns the same and is free and it frees you from refill station dependancy.

We'all've become a bit weak... must man up and rough it out aboard our boats!



ciao!
Nick.
Cold coffee & warm beer.

Gotta love sailing...
__________________
Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 27-02-2012, 17:10   #25
Registered User
 
Nicholson58's Avatar

Join Date: Jan 2011
Location: Live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 3,466
Images: 83
Re: Using an electric tea kettle to save propane?

Quote:
Originally Posted by Ex-Calif View Post
Cold coffee & warm beer.

Gotta love sailing...

how about sun-tea and bilge temp beer?

Makes a strong case for the solar cookers.
__________________
Nicholson58 is offline   Reply With Quote
Old 27-02-2012, 17:39   #26
Registered User
 
stevensuf's Avatar

Join Date: Dec 2010
Location: Back in Scotland!
Boat: Gib sea 43
Posts: 840
Images: 10
Re: Using an electric tea kettle to save propane?

much cheaper to use battery power to boil water in an electric kettle than to use propane, same for a microwave an many things, eg jacket potato few mins inc microwave, hour in oven, chicken? using electric from an inverters in many aspects is much cheaper than propane/butane!
__________________
http://nicnsteve.blogspot.com/

If the pen is mightier than the sword, then my keyboard must be a nuclear missile!
stevensuf is offline   Reply With Quote
Old 27-02-2012, 17:48   #27
Registered User

Join Date: Sep 2009
Location: Mackay,QLD, Australia
Boat: planning a approx 45ft cat
Posts: 3,651
Images: 3
Re: Using an electric tea kettle to save propane?

Quote:
Originally Posted by meuritt View Post
I am trying to get shore power off my boat, and minimize any electric use. As it sits dockside now, only the battery charger is on shore power, and I don't really even need that. I've removed the too small fridge and the electric coffee maker.

For my less electric dependent goals I would be looking at fire, I have propane, as do you, it is inexpensive and reliable, I would add another bottle, if I were to go away from where that fuel is readily available. I would either get more propane storage or look to other fuel choices, a small alcohol or kerosene stove comes to mind. Being portable you could take them on deck and not have any of the heat and humidity from the boiling water inside.

If you look up the pepsi can stove you will find instruction on building a very handy back packer style stove out of, you guessed it, a pepsi can. I haven't done that, and probably won't because propane is convenient and cheap around here. But I would at least experiment with something like the PCStove before I increased the demand on the electrics.

I would also find a way to preheat any water via solar. Something as simple as a 2 gallon clear, collapsible drinking water container would be the simplest, transfer that into a thermos when the sun goes down.

Unbeliavable. You can always go back to cave man days if you so choose. Go for it.
__________________
downunder is offline   Reply With Quote
Old 27-02-2012, 18:12   #28
Registered User
 
stevensuf's Avatar

Join Date: Dec 2010
Location: Back in Scotland!
Boat: Gib sea 43
Posts: 840
Images: 10
Re: Using an electric tea kettle to save propane?

he does have a point on using a solar shower to preheat to save on power!
__________________
http://nicnsteve.blogspot.com/

If the pen is mightier than the sword, then my keyboard must be a nuclear missile!
stevensuf is offline   Reply With Quote
Old 28-02-2012, 06:24   #29
Armchair Bucketeer
 
David_Old_Jersey's Avatar

Join Date: Oct 2006
Posts: 10,013
Images: 4
Re: Using an electric tea kettle to save propane?

Quote:
Originally Posted by downunder View Post
Unbeliavable. You can always go back to cave man days if you so choose. Go for it.
As the thread has already started drifting.........

.........Apart from minimising use of Electrikery, funnily enough I am also mulling over (and will likely try) an open wood fire for cooking (free fuel over here ) when I move aboard (March / April) as my mooring won't be in range of shore power.....not on the boat , but on the shore - the nearby Napoleonic Fort (upgrade during WWII, by the Germans!)....plenty of nooks and crannies and no one around (permanently) to get upset.

Probably not to simply boil a kettle for a cup of tea , but if I am cooking up something suitable - and I have SFA better to do .



Later I will probably buy a microwave and 200sq foot of Solar .....or a 2 mile electric extension cord .
David_Old_Jersey is offline   Reply With Quote
Old 28-02-2012, 10:12   #30
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: Using an electric tea kettle to save propane?

Quote:
Originally Posted by David_Old_Jersey View Post
the nearby Napoleonic Fort (upgrade during WWII, by the Germans!)....
Oh my, you're in France! I believe they record TV series there all the time, you can't go and cook there as they would start screaming and jumping with camera's rolling and before you know it you end up in the evening news as some kind of Mad Max era caveman that has been discovered living in the ruins of man kind


Nick.
__________________

__________________
s/v Jedi is offline   Reply With Quote
Reply

Tags
electric, propane

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
Getting Too Fat to Sail pillum General Sailing Forum 160 07-01-2016 12:15
Manual for a Winchmaster Electric Winch Handle uhatlevi Deck hardware: Rigging, Sails & Hoisting 2 31-08-2013 12:45
Australia - What a Beautiful Place to Cruise Lagoon4us Sailor Logs & Cruising Plans 90 15-12-2012 03:51
For Sale: Andersen 52 Electric Winch smith401 Classifieds Archive 2 12-06-2012 06:31
How to Control Pingbacks on CF Oceandrifter Forum Tech Support & Site Help 4 29-02-2012 14:48



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:12.


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.