Go Back   Cruiser Log World Cruising & Sailing Forums > Cruising Forums > General Cruising Forum
Cruiser Wiki

Join Cruiser Log Today

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-03-2006, 06:18 PM   #1
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default Refrigeration

I currently have two separate freezers, both are cooled by eutectic plates, driven from a tecomseh compressor, which in turn is belt driven from the diesel. I am considering disconnecting the smaller of the two (72 litres) and installing a 12/240 volt system, so that I do not need to run the engine on a daily basis when at anchor. I have 160 watts of solar panels, and may buy a wind turbine to augment charging capacity. I currently have 840Ah in storage capacity. I am considering buying a Danfoss BD50 compressor and a 'U' shaped evaporation plate. Any advice re this syetem, or indeed any other, will be welcomed. Thanks. David
__________________

__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 11-03-2006, 10:04 PM   #2
Rear Admiral
 
Join Date: Feb 2006
Posts: 437
Default

Ahoy David!

I'm certainly no expert, but...

There have been some great advances in recent years and you may get a large variety replies at to which is the best way to go for efficient refrigeration upgrades.

In my opinion, Richard Kollerman (sp?) has the most informative book on the subject and you can contact him personally at www.rparts.com for suggestions. Nigel Calder also has a good book, too.

It's all theoretical but all seem to agree that water absorbs heat much more efficiently than air.

I am about to throw away our eutectic plates & engine compressor and replace it with a pair of frigoboat 12 v dc units which will be powered by eight 80 watt solar panels feeding eight Trojan T-105 six volt deep cycle batteries. I also have a 100 amp smart alternator on our new engine to help augment the power whenever necessary.

The system I'm going to install have both air and keel cooling for increased tropical efficiency. I'm installing two for increased cruising flexibility. Hopefully - it'll work completely by the power of the sun. Hopefully - it'll work while the boat's hauled out. Hopefully - there'll be enough power left to run a blender.

I installed a smaller air cooled Danfoss unit with rectangular evaporator on our last boat. It kept things frozen when placed inside the evaporator "box". We used three 45 watt solar panels feeding six of the same batteries mentioned above. It worked okay but we needed to run the engine for an overnight recharge when the charge dropped to 12.2 volts - about every five days - depending on the climate. That fridge never let me down from Guam to the Caribbean.

Again - it's all theoretical... all I know is that I get great satisfaction from a cold beer while anchored in pristine, remote locations and the moment can be shattered by having to run my engine in order to make it happen.

Let me know how it all works out, okay.

Cheers,

Kirk
__________________

__________________
Gallivanters is offline   Reply With Quote
Old 11-04-2006, 04:55 AM   #3
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

Thanks Kirk for the advice and i'net link. 8 x 80w solar panels, that's going to take a lot of room. Where will you mount them?

Cheers. David
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 11-04-2006, 09:20 PM   #4
Rear Admiral
 
Join Date: Feb 2006
Posts: 437
Default

Hi David,

Half are going on the hard top over our centre cockpit and the other half will be mounted on a stern arch which is presently being completed.

The pannels are SHARP model NE-80EJE and each measure just under 2 x 4 ft (537 x 1200). We have a terrific rebate program going here and I aquired eight 80 watt panels for $1200 USD = $150 USD each.

I'm planning to use an OUTBACK controller.

Granted, it's going to be expensive when complete - biggest cost is fabrication of the arch & hard top, but I reckon it's not too uncommon for "dirt dwellers" spend this kind of dough on home additions, lawn mowers & roof tiles... all of which we've escaped by answering The Call...

I'm sure it's a wise investment in our future cruising pleasures.

WHERE are you heading in SE Asia? We spent a year meandering through the Philippines, Borneo & Malaca Straits back in 2000 - 01. We loved Kuching, Johor Baru, Penang, Langkawi and the Phuket region... ALL of it. Best part was the food! Chili Crab cooled with Tiger Beer! Yum!

Enjoy your adventure - we're not too far behind you.

Kirk
__________________
Gallivanters is offline   Reply With Quote
Old 11-05-2006, 05:40 AM   #5
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

$150 each...That's amazing. As my boat has a canoe stern, the alternatives for placement of panels is not so clear, but I can exchange the 2 x 40 for 2 x 80. I am impressed with the Frigoboat system and will enquire further.

I am planning to sail from Darwin to Thailand, Malaysia, Philippines, Palau, Taiwan, Japan. I'm still deciding whteher I should leave with the trades in April, or wait for the Darwin to Ambon race in late June.

But then again, who cares? The wind blows, the boat goes, the beer is cold and liff is good!

David
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 11-09-2006, 08:46 PM   #6
Rear Admiral
 
Join Date: Feb 2006
Posts: 437
Default

Ahoy David!

Log onto the CRUISERS & SAILING FORUM and go to FRIGABOAT topic to have a look at what some other users (and sellers) think about the fridge system I was thinking about purchasing!

I may need to re-think this.

Cheers!

Kirk
__________________
Gallivanters is offline   Reply With Quote
Old 11-10-2006, 05:09 AM   #7
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

Thanks for that Kirk. It presents a perspective that is not appealing. My only experience with 12v systems was when I self installed a Waeco BD35F compressor and eutectic holding plate in a previous boat. I was super impressed, but as with all holding plate systems, the only thermostatic control is 'bloody cold' or 'bugger it'. I'll keep researching.

Cheers

David
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 11-10-2006, 07:50 AM   #8
Rear Admiral
 
Join Date: Feb 2006
Posts: 437
Default

David,

How long did it take the 12V BD35 compressor to freeze the eutectic plates?

And... after the initial pull down - how long / often would the compressor cycle to keep them frozen??

I've been told by the "experts" that small 12V compressors will not work with eutectic holding plates... especially THREE of them, like I have.

I really wish to get away from the engine driven compressor. It's just such a shame to have to throw away the three holding plates and start all over.

Nigel Calder's book suggests using a 1/2 hp 12V compressor system provided one has the batteries and means to keep them charged... but this type compressor would cost me as much two complete Waeco based systems...

Hmmmmmmmmm...

Kirk
__________________
Gallivanters is offline   Reply With Quote
Old 11-10-2006, 09:39 AM   #9
Admiral
 
Trim50's Avatar
 
Join Date: Feb 2006
Home Port: Who cares really...
Vessel Name: T
Posts: 1,215
Send a message via Yahoo to Trim50
Default

Take a look at Technautics cool blue...we have been extremely pleased with its performance.

http://www.technauticsinc.com
__________________
[
Trim50 is offline   Reply With Quote
Old 11-10-2006, 07:38 PM   #10
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

The waeco/isotherm/danfoss system can be ordered with a compatable holding plate. It is relatively small, but freezes quickly. Used in conjunction with a heat exchange unit which replaces the galley sink through hull, the system worked very well in my 27' sloop. The freezer box was 60 litres. I understand a larger holding plate can be bought to suit the larger BD50 compressor.

I tested the unit with one 40 watt solar panel and a 120 ah deep cycle battery. Bearing in mind that in Darwin we have 400 hours of sunshine each day, the unit shut down through lack of power after six days. During that time the freezer was empty.There was a 20 litre 'spill over' box which had 12 beers in it on day one....but sadly was empty by day 5.

I really like my engine driven system, but it is a pain when at anchor. This is why I only want to put 12v refrigeration in one box.

Interestingly Cornell's ARC 2000 survey showed Isotherm to be the most popular 12v system (30%), followed by Frigoboat (13%) and Grunert (3%). It seems that the engine driven system, which just 15 years ago was the height of hi-tech sophistication, now brands us as ludites....Durn it.
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 11-10-2006, 11:01 PM   #11
Admiral
 
Trim50's Avatar
 
Join Date: Feb 2006
Home Port: Who cares really...
Vessel Name: T
Posts: 1,215
Send a message via Yahoo to Trim50
Default

"Luddites"...now that is funny! I haven't heard that expression in years.
__________________
[
Trim50 is offline   Reply With Quote
Old 11-11-2006, 04:50 AM   #12
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

So named after a nut-case called Ned Lud who helped textle workers smash machinery at the start of the industrial revolution in England, because they thought technology would cost jobs. Now that could never happen, could it? I look at my telephone and think of the disturbed Ned every time an Indian bloke, who tells me he is called Steve or Barry (but never Patel) and claims to be calling from anywhere but Chennai, inquires into the state of my health and tries to sell me personal insurance, or a better cell phone deal.
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 11-11-2006, 08:22 AM   #13
Admiral
 
Trim50's Avatar
 
Join Date: Feb 2006
Home Port: Who cares really...
Vessel Name: T
Posts: 1,215
Send a message via Yahoo to Trim50
Default

I once used "Luddite" as my radio handle when CB's where popular. No one understood the meaning and I was always having to explain...got old after a while. Good to see that there are a few out there with such insight.
__________________
[
Trim50 is offline   Reply With Quote
Old 11-11-2006, 09:58 PM   #14
Rear Admiral
 
Join Date: Feb 2006
Posts: 437
Default

Trim,

Please... tell me more about your CoolBlue system. What is your box configuration? What sort of batteries? How are they re-charged?

The Technautics website makes them look attractive (as they ALL do)and I've inquired about what they can do for us.

We currently have two boxes w/ three holding plates and it sure would be nice if we can leave our plates as & where they are... but I hear they can't be satisfied with a 12 volt Waeco / Danfoss compressor.

Anyway - we installed a stern arch yesterday and can now mount our eight 80 watt solar panels. Now all I have do do is decide on which 12 volt fridge sysyem to commit to.

Have a great weekend,

Kirk
__________________

__________________
Gallivanters is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Refrigeration Or No? nomad The Galley 26 08-11-2011 02:22 AM
Refrigeration Condenser In Steel Boat Solution Silver Repairs & Maintenance 1 01-14-2009 08:07 PM
Recharging Refrigeration babylonlarry Repairs & Maintenance 1 09-23-2008 02:49 AM
Refrigeration System For Sale Gallivanters Cruiser's Market 4 03-04-2008 01:54 PM
Best Refrigeration? worldsurfsail General Cruising Forum 7 09-22-2006 09:50 PM

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


All times are GMT. The time now is 08:49 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0