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Old 16-07-2010, 15:02   #1
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Eutectic Refrigeration

Can somebody please tell me about the Eutectic Refrigeration and is it able to get power from the battery from wind generator and/or solar panels.
Or does the Eutectic Refrigeration run only from a motor?

What is the best Refrigeration System for a Cruising Yacht?

thanks again for any comments
Rob
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Old 16-07-2010, 15:53   #2
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you can get a eutetic holding plate to use with a small 12vdc compressor, also on some of the engine driven systems (sea frost at least used to have such a thing) the engine compressor does the bulk cooling and the 12 vdc maintains the cool when there is abundant electricity available from the sun or wind.
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Old 16-07-2010, 16:08   #3
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Eutectic Refrigeration

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Originally Posted by Sailmonkey View Post
you can get a eutetic holding plate to use with a small 12vdc compressor, also on some of the engine driven systems (sea frost at least used to have such a thing) the engine compressor does the bulk cooling and the 12 vdc maintains the cool when there is abundant electricity available from the sun or wind.
Sailmonkey
Thanks for your reply.
I have read in the forum that a12vdc fridge is more reliable than an engine driven refrigeration system and less hassles as long as you have plenty of sun and wind.
Location of cruising will be in the tropics most times in Australia.

What is your opinion on that?

Thanks again
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Old 16-07-2010, 17:03   #4
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A eutectic refrigeration system uses a compressor/condensor just like a flat plate system, but used an evaporator coil immersed in a eutectic solution. The ES freezes and stores energy which it releases (well absorbs heat actually) when the compressor is off.

ES systems aren't any more efficient than flat plate systems for small DC powered compressors. Batteries can store energy as well or as cheap as eutectic plates.

So using wind or solar as your energy source to recharge your batteries, a simple flat plate system like Alder Barbour will work fine.

In the tropics with good insulation, a 6 cu ft box will require 60-100 amphours per day of 12V DC power to keep cool. But solar panels work good in the tropics as well. That 60-100 amphours can be produced by 200-300 watts of solar panels.

David
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Old 16-07-2010, 18:37   #5
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Quote:
Originally Posted by Pilot Rob View Post
Sailmonkey
Thanks for your reply.
I have read in the forum that a12vdc fridge is more reliable than an engine driven refrigeration system and less hassles as long as you have plenty of sun and wind.
Location of cruising will be in the tropics most times in Australia.

What is your opinion on that?

Thanks again
I'm a fan of the flat evaps on smaller boats. The reason for this is twofold.
1. The Eutetic plates are large and fill up the already small icebox
2. Flat plates can be had in an O shape so that the center can be used
as a freezer.

If you plan on having solar and/or wind you won't want to run your engine to cool your icebox, again upper hand goes to 12vdc compressor. The upside to the eutetic system is the abilty to "hold" overnight when the sun isn't shining and the solar isn't feeding the batteries.
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Old 16-07-2010, 18:43   #6
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Rob check out OZEfridge its a great unit, install is simple. We have had our unit for 5 months its run on shore and batteries without issues.
It has the ability to circulate your drinking water through its condensor to add to it cooling in tropics, no loss of water.
Has smart electronics to make the most of excess power from your solar etc.

www.ozefridge.com.au
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