Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 06-03-2018, 08:48   #46
Registered User
 
LakeSuperior's Avatar

Join Date: Jan 2008
Boat: Teak Yawl, 37'
Posts: 2,002
Images: 7
Re: Ice as a battery

Quote:
Originally Posted by owly View Post
It's frankly amazing how complicated people can make things in pursuit of automation. just separate solar panels into banks with switches. Designate some to feed the charge controller, and some to the chiller. Have switching available so you can change that balance if needed. Solar is cheap these days. If you don't manage it like a computer would, it isn't the end of the world. Being able to monitor the state of charge so you can redirect intelligently is important.

There is a reason people use refrigeration systems that operate like shore refrigeration systems. Battery weight on monohulls is not particularly important, and it's easy and effortless................ My interest is in multihulls where every pound matters. I'm willing to manage my charging to keep weight down.

H.W.
There are a few problems with a manual control system.

House power consumption fluctuates from day to day so the total solar power required to top off batteries is variable, therefore, the excess power available to freeze water will vary.

The amount of power available to charge house batteries and freeze water is further confounded by daily variations in solar loading on the solar panels.

Consequently, the time at which to switch over the system will different every day.

Human presence onboard to switch power is not a given. What if you are diving, sightseeing, etc.

Do you want to be onboard every day to check the meter every hour in order to manage the charging? Not me.
__________________

LakeSuperior is offline   Reply With Quote
Old 06-03-2018, 10:47   #47
Registered User

Join Date: May 2017
Posts: 398
Re: Ice as a battery

Quote:
Originally Posted by LakeSuperior View Post
There are a few problems with a manual control system.

House power consumption fluctuates from day to day so the total solar power required to top off batteries is variable, therefore, the excess power available to freeze water will vary.

The amount of power available to charge house batteries and freeze water is further confounded by daily variations in solar loading on the solar panels.

Consequently, the time at which to switch over the system will different every day.

Human presence onboard to switch power is not a given. What if you are diving, sightseeing, etc.

Do you want to be onboard every day to check the meter every hour in order to manage the charging? Not me.

There is no question that it's a problem...... what isn't? Automation creates it's own problems. During the day if you are not around to maximize the efficiency manually, of course, you can simply draw off the battery while the charge controller feeds charge the battery, and let the normal thermostatic control manage things, and just not worry much about it. When you are trying to "bank ice", you might dedicate some solar to just the freezer, and crank it to max, and some to the battery bank. A look at the forcast, and at your needs, and some human decision making is called for. You have so many amps to play with, you know your state of charge, and have a good idea how much ice is banked..... You make a decision. Alternatively you can have a system with more batteries that mindlessly cycles a refrigerator. It all depends on your willingness to make decisions and be involved. There is a reason most people just use a mindless refrigeration system and buy batteries enough that they can ignore it. It's easy.
I'm looking at it from a different perspective than you are. I'm willing to inject some human management into the system to have fewer batteries. The life of all batteries is based on the total energy stored and retrieved. As with the choice of the boat itself, the perfect boat for me is completely unsatisfactory for someone else. That's true with much of what we do. I'm obviously willing to mess with it more than you are. Hopefully you can bank enough of both battery charge and ice and fresh water, that it's never a crisis.
H.W.
__________________

owly is offline   Reply With Quote
Reply

Tags
battery

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Just a freezer & make ice for ice box... would it worK? basssears Plumbing Systems and Fixtures 23 11-12-2015 23:52
RO system+Ice Maker+Ice Box= Efficient? drousy88 Provisioning: Food & Drink 9 18-03-2013 19:03
Would An Ice Cube Maker Work To Cool My Ice Box? Shanaly Plumbing Systems and Fixtures 7 06-01-2013 08:22
Dry Ice in the Ice Box ? shibbershabber Provisioning: Food & Drink 27 23-05-2010 10:07
Block Ice vs Ice Water delmarrey Plumbing Systems and Fixtures 26 12-07-2009 07:48

Advertise Here


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:24.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×

ShowCase vBulletin Plugins by Drive Thru Online, Inc.