|
|
|
|
|||||
|
||||||
From: Daryl Manning (no email)
Date: Sun Aug 07 2005 - 20:16:55 EDT
It's a good point I noticed that too when I lived on the Neilali in
Paris...
I really wish boat designers, especially when thinking about
liveaboards, would target simpler, more economical systems that are
also super low power consumption. While I realize that most people
who can afford yachts of that size rarely need to worry about those
sorts of costs for their genSets and such, I'm actually interested
when I finally get another boat, in trying to use things like super
efficient LED whitelights and the like and being as power independent
as possible (like *way* off grid). No A/C, that's for sure will try
and stick with fans and much as possible generate my own power via
solar and wind (only thing I can think of this being a real problem
for is hot water if I stay up here in Northern climes). Maybe a water
maker too if I'm out a lot.
I was super impressed at a post over on treehugger on this aussie who
retrofitted a freezer to be super efficient. Seems very applicable to
boat stuff as well (the general principle if not the massive hunking
freezer) :
> Man Retrofits Freezer to Make an Ultra-Efficient Fridge
>
> An off-grid experimenter in Australia, Tom Chalko, has retrofitted
> a chest freezer to create a fridge that uses only 100 watt-hours
> (0.1 kWh) per day! Why a chest freezer? Tom points out that
> vertical door refrigerators are inherently inefficient. As soon as
> you open a vertical fridge door the cold air escapes, simply
> because it is heavier than the warmer air in the room. When you
> open a chest freezer, the cool air stays inside, just because it’s
> heavy. Any leak or wear in a vertical door seal causes significant
> loss of efficiency.
> Tom took a standard chest freezer (a Vestfrost SE255), added a $40
> external thermostat, then wired the freezer to turn off when the
> desired temperature was reached. The thermostat runs on 2 AAA
> batteries which last for months. The freezer runs for about 90
> seconds per hour and then shuts down completely, making it not only
> very efficient but very quiet.
>
> Full article from Build It Solar (PDF File)
http://www.treehugger.com/files/2005/07/man_retrofits_f.php
It's not just about leaving a small footprint on the earth and
conserving the ocean we all enjoy, it's also about living affordably,
economically and as independently as possible with the dirhams you
have...
ciao !
Daryl.
On 5-Aug-05, at 2:15 PM, Lee Licata wrote:
> Dick, and the list,
>
> I guess I failed to make my point clear: There appears to be a
> whole lot less of "stuff" that requires electricity on a 65'
> "luxury" yacht here than on an equivalent size American yacht.
>
> An 35' express cruiser that I once owned required 120 VAC and 60
> amps to run everything on it. The next size up (40') required a 240
> VAC / 50 amp connection to run everything.
>
> Lee
> Ankara
>
>
> On Aug 5, 2005, at 23:34, Richard Goodwin wrote:
>
> There is a good reason for that thin cord. A boat
> that is using all those loads will require some amount
> of total power (watts). watts = volts x amps.
>
> So if that boat is in the US, using 120v, it will draw
> some amount of amps.
>
> But if it is in Ankara, using 240v, it will draw only
> half that amount of amps.
>
> Half the amount of amps requires only half the size of
> wire.
>
> That in fact is why 240v is used around much of the
> world instead of 120v -- less copper is required in
> electric lines, and copper is expensive, so higher
> voltage saves a lot of copper cost -- albeit at a
> higher risk of injury from electric shocks.
>
> Dick
>
> ______________________________________________________________________
> _____
> || The Live-Aboard List : send a "subscribe" or "unsubscribe"
> request ||
> || in body of message to: live-aboard-
> ||
>
>
___________________________________________________________________________
|| The Live-Aboard List : send a "subscribe" or "unsubscribe" request ||
|| in body of message to: ||
|