[Rhodes22-list] Thermoelectric cooler - shroud length
The Rhodes 22 Email List
rhodes22-list at rhodes22.org
Mon May 18 19:40:06 EDT 2015
Susan:
I just measured my lower shrouds. I have a standard mast and the boat is a
76. The forward shroud was 11'9" and the aft shroud was 11' 11". Take that
as an approximate measure. I measured from clevis to clevis. I don't have
the measurement for the upper shrouds but can get them for you if you want.
Graham Stewart
gstewart8 at cogeco.ca
613 389-1737
-----Original Message-----
From: rhodes22-list-bounces at rhodes22.org
[mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of The Rhodes 22 Email
List
Sent: May-18-15 12:53 PM
To: rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] Thermoelectric cooler
On a different subject. Does anyone know the length of the shrouds on a
1974 Rhodes 22? It is fitted with a standard mast, and does not have
mainsail furling. Are the mast heights of the mast the same for the two
configurations? (furling main, and conventional mast) Any help will be much
appreciated...Sealady293 at aol.com
In a message dated 5/18/2015 12:39:57 P.M. Eastern Daylight Time,
rhodes22-list at rhodes22.org writes:
Susan,
I will try to answer your question.
No. The solar panels will not keep up with your cooler forever. It will
however, keep up for a while. If you leave it on while on shore without
the suggested charger your batteries will be drained dead in a day or less.
Maybe longer if you use both batteries.
Here is some Math.
As indicated a typical battery might be 90 Amp-hours capacity. I often see
products listed with Amps per hour as mentioned. However there really is
no such thing. What really should be listed is just plain Amps or
Amp-hours per hour, which would be an average, assuming your cooler doesn't
run all the time (turning off and on via thermostat like your fridge). In
hot weather I would assume the worst, in the typical example
mentioned (3-6) I would use 6 Amps. So in a perfect world one battery
would last 15 hours.
90 amp-hours/6 amps = 15 hours
If your panels are from GB they are probably 15 Watts. They might be
configured one panel per battery. Assuming you have your battery selector
set to 1, and saving your other in case you need it for electric start.
1 Panel = 15 Watts (Volt-Amp) / 12 Volts = 1.25 Amps.
You might have clouds and your panel is probably mounted flat and not
pointed directly at the sun, maybe aged, maybe dirty, maybe it is
nighttime. So 1 Amp would be a very generous assumption. But to keep the
math easy lets use 1 amp.
6 amps used - 1 amp provided = 5 amps net draw. You are now at
90 amp-hours/5 amps = 18 hours
Now, your battery is also probably not new and won't be able to provide a
full 90 Amp-hours. Probably much less. So you could probably double that
time for two batteries and two panels if you don't use any lights, but I
would cut it in half again to account for older batteries.
If you killed a battery dead, turned off your cooler, and left the boat for
the week, to regain the full 90 Amp-hours at the 1 amp of the panel it
would take 90 hours of good sunlight to fully recharge with perfect
efficiency, which is not realistic. So it would take at about a week to
recharge (12 hours of sun per day) 90/12=7.5 days.
Also, your panels might only be 5 or 10 watts. I have just heard other
listers report that they had 15 watt panels.
So, if you have the shore battery charger you can probably use the cooler
for day trips or two. You can help the situation as you mentioned by
freezing some drinks ahead of time etc. If you count on electric start I
would keep one battery full.
My only experience with this is I once (about ten years ago) plugged one
into my vehicle the night before a trip so it would be cool. Instead found
the battery dead and drinks warm. So I checked the math....and returned the
cooler.
-Patrick
On Mon, May 18, 2015 at 6:39 AM, The Rhodes 22 Email List <
rhodes22-list at rhodes22.org> wrote:
> Thanks for that link. I did look at your project and it is probably
> a
bit
> beyond my capabilities, but it shows what you can do. I was just
> trying
to
> find a way to get around carrying ice and having to replace it all
> the time.
> I just want to keep drinks cool. With the thermoelectric cooler, I
> could plug it into shore power when not on the boat and things would
> be cool
when
> I got there. The other trick is to add frozen bottled water to the
cooler
> instead of ice which would help keep things cool if I can't run it
> off
the
> battery.
>
> Susan
>
> -----Original Message-----
> From: rhodes22-list-bounces at rhodes22.org
> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of The Rhodes
> 22 Email List
> Sent: Monday, May 18, 2015 1:11 AM
> To: The Rhodes 22 Email List
> Subject: Re: [Rhodes22-list] Thermoelectric cooler
>
> Hi Susan,
> You have a great boat and a great bunch of people to help you.
> We all were in your position once, really, even Rummy. Well he might
> not have been up right be he is much better not, or more often. We
> spend long periods on the boat and I faced the same dillema and tried
> a couple of combinations. I finally setteled on a rebuild of the ice
> box. The
results
> were very good. With careful use It keeps a 5# block of ice for 4-5
> days in Chesapeak weather, longer in Canada. Below is a link to the
> project.
>
>
> On Sun, May 17, 2015 at 6:45 PM, The Rhodes 22 Email List <
> rhodes22-list at rhodes22.org> wrote:
>
> > You'll need to install a battery charger (if you don't have one
> > already), but shore power makes for a much easier install. Simply
> > plug the charger into one of your available AC outlets and connect
> > to your
two
> batteries.
> > Here is an example
> >
> > http://www.amazon.com/Guest-2611A-Battery-Charger-24-Volt/dp/B000NHZ
> > V1
> > S
> >
> > With this option, your batteries will charge while you are plugged
> > into shore power.
> >
> > When looking at refrigerators, be sure to look at amount of amps
> > consumed per hour. I think you find most use in the 3-6 amps per
> > hour
> range.
> >
> > As far as your battery capacity, each group 27 battery has about 90
> > amp hours.
> >
> > That's said, I agree with the others. I'd stick with a quality
> > cooler
> > and block ice.
> >
> > Cheers,
> > Ted
> >
> > > On May 17, 2015, at 5:47 PM, The Rhodes 22 Email List <
> > rhodes22-list at rhodes22.org> wrote:
> > >
> > > I asked Stan the same question about my solar panels and
> > > batteries last
> > September when I got my recycled boat and he said shore power does
> > not charge them.
> > >
> > > Robert Weiss
> > > Professor/Director Emeritus, SIUC Director of Music, 1st U.
> > > Methodist Carbondale IL
> > >
> > >> On May 17, 2015, at 3:42 PM, The Rhodes 22 Email List <
> > rhodes22-list at rhodes22.org> wrote:
> > >>
> > >> All your responses have been very helpful, and I would like to
> > know
> > >> if plugging into shore power charges my batteries. Is that
> > >> standard or
> > how do
> > >> I check that?
> > >>
> > >> Susan
> > >> New Rhodes owner and not very knowledgeable about electrical stuff.
> > >>
> > >> -----Original Message-----
> > >> From: rhodes22-list-bounces at rhodes22.org
> > >> [mailto:rhodes22-list-bounces at rhodes22.org] On Behalf Of The
> > >> Rhodes
> > >> 22
> > Email
> > >> List
> > >> Sent: Sunday, May 17, 2015 1:31 PM
> > >> To: The Rhodes 22 Email List
> > >> Subject: Re: [Rhodes22-list] Thermoelectric cooler
> > >>
> > >> Susan,
> > >>
> > >> Do you plug into shore power to charge batteries when you're not
> > sailing?
> > >>
> > >> Cheers,
> > >> Ted
> > >>
> > >> S/V AIRPOWER
> > >> 1991/2013 R22
> > >> Jacksonville, FL
> > >>
> > >>
> > >>
> > >>>> On May 17, 2015, at 1:18 PM, The Rhodes 22 Email List
> > >>> <rhodes22-list at rhodes22.org> wrote:
> > >>>
> > >>> I am getting my (1986/2000) Rhodes ready for the summer and
> was
> > thinking
> > >>> about putting a thermoelectric 12 V cooler on the boat so I
> > >>> don't have
> > to
> > >>> worry about replenishing ice all the time. I have two
> > >>> batteries and
> > two
> > >>> solar panels. If I left something like this plugged in all the
> > >>> time,
> > >> would
> > >>> it be likely to run my batteries down or would the solar panels
> > >>> be
> > able to
> > >>> keep up with the demand? I'm not very good with this
> > >>> electrical
> > >>> stuff
> > so
> > >>> looking for advice.
> > >>>
> > >>> Susan
> > >>> Purchased AT EASE from Lee Kuhn last fall and still looking
> > for
> > >>> new
> > name
> > >>>
> > >>> __________________________________________________
> > >>> To subscribe/unsubscribe go to
> > >> http://www.rhodes22.org/mailman/listinfo/rhodes22-list
> > >>>
> > >>> For the list Charter and help with using the mailing list and
> > >>> archives
> > go
> > >> to http://www.rhodes22.org/list
> > >>> __________________________________________________
> > >>
> > >> __________________________________________________
> > >> To subscribe/unsubscribe go to
> > >> http://www.rhodes22.org/mailman/listinfo/rhodes22-list
> > >>
> > >> For the list Charter and help with using the mailing list and
> > >> archives
> > go to
> > >> http://www.rhodes22.org/list
> > >> __________________________________________________
> > >>
> > >> __________________________________________________
> > >> To subscribe/unsubscribe go to
> > http://www.rhodes22.org/mailman/listinfo/rhodes22-list
> > >>
> > >> For the list Charter and help with using the mailing list and
> > >> archives
> > go to http://www.rhodes22.org/list
> > >> __________________________________________________
> > >
> > > __________________________________________________
> > > To subscribe/unsubscribe go to
> > http://www.rhodes22.org/mailman/listinfo/rhodes22-list
> > >
> > > For the list Charter and help with using the mailing list and
> > > archives
> > go to http://www.rhodes22.org/list
> > > __________________________________________________
> > __________________________________________________
> > To subscribe/unsubscribe go to
> > http://www.rhodes22.org/mailman/listinfo/rhodes22-list
> >
> > For the list Charter and help with using the mailing list and
> archives
> > go to http://www.rhodes22.org/list
> > __________________________________________________
> >
> -------------- next part -------------- A non-text attachment was
> scrubbed...
> Name: installing a new icebox.pdf
> Type: application/pdf
> Size: 927716 bytes
> Desc: not available
> Url :
>
>
http://www.rhodes22.org/pipermail/rhodes22-list/attachments/20150517/6cd1ab6
> a/attachment.pdf
> __________________________________________________
> To subscribe/unsubscribe go to
> http://www.rhodes22.org/mailman/listinfo/rhodes22-list
>
> For the list Charter and help with using the mailing list and
> archives go to http://www.rhodes22.org/list
> __________________________________________________
>
> __________________________________________________
> To subscribe/unsubscribe go to
> http://www.rhodes22.org/mailman/listinfo/rhodes22-list
>
> For the list Charter and help with using the mailing list and
> archives go to http://www.rhodes22.org/list
> __________________________________________________
>
__________________________________________________
To subscribe/unsubscribe go to
http://www.rhodes22.org/mailman/listinfo/rhodes22-list
For the list Charter and help with using the mailing list and archives go
to http://www.rhodes22.org/list
__________________________________________________
__________________________________________________
To subscribe/unsubscribe go to
http://www.rhodes22.org/mailman/listinfo/rhodes22-list
For the list Charter and help with using the mailing list and archives go to
http://www.rhodes22.org/list
__________________________________________________
More information about the Rhodes22-list
mailing list