Shucks if you are left in earth to see the end, you missed the bus and earned your place. Happy fighting and welcome to He!!
Small system to power freezer and refridgerator
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The OP wanted details for a SMALL BACK UP SYSTEM, for refigeration which is not normally small and back up indicates for when the power is down for a short while,
As it turns out the OP wants a stand alone system for when there is no mains power at all,
So all the Hu Ha has started because the OP did not state what they really wanted to achieve,Comment
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Not worth the electricity to debate as things will get bad before the end of the world as you put it. You must live in the city, At what store are you going to be waiting in line to get your food, as mine will be fresh and in my freezer!!!!!!!!!!!!!Comment
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Enough
Either we discuss what the Op has asked for help on or I close the thread.
It is not our place to interject our values on others.
It doesn't matter what the OP's motives are, they are his and he or she will make the value judgement. It is not up to us!
So that being said what does anyone have to say that might be constructive in helping the OP to design a system.
Oh here's a thought
Ken
To accurately determine loads get a Kill a watt and plug the items you wish to run for a few days to determine how many watt hours a day each uses. Remember that a refrigerator or freezer will use more during the warmer months but we are really looking at the winter months to determine the usage. After a few days divide the use on the meter by the number of days it ran to get daily usage.
Once we have that information it will be easy to size a system that is appropriate for the intended use.NABCEP certified Technical Sales Professional
[URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]
[URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)
[URL="http://www.gaisma.com"]www.gaisma.com[/URL]Comment
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Nah we will see your lights on and just take everything you have. You do not have enough bullets or guns to stop thousands aiming for you.MSEE, PEComment
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Thanks Rich, I have the fridge and freezer in my garage that's not insulated and I think that will help keep them from running as much in the winter when sunlight is less to charge batteries, if that is a misconception please let me know, sorry some people have to be smart a__, just looking for some valuable information. People should read Thomas Jefferson a very smart man who had a lot of knowledge for his time.Comment
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Thanks Rich, I have the fridge and freezer in my garage that's not insulated and I think that will help keep them from running as much in the winter when sunlight is less to charge batteries, if that is a misconception please let me know, sorry some people have to be smart a__, just looking for some valuable information. People should read Thomas Jefferson a very smart man who had a lot of knowledge for his time.NABCEP certified Technical Sales Professional
[URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]
[URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)
[URL="http://www.gaisma.com"]www.gaisma.com[/URL]Comment
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I have the fridge and freezer in my garage that's not insulated and I think that will help keep them from running as much in the winter when sunlight is less to charge batteries, if that is a misconception please let me know
Thinks about your summers and night time temps, if you have sunny summer days and cool nights that good, if you hot summer nights that is a factor, the refridge works harder as its hotter and generally opened more for cool drinks etc,
daytime for me is not the factor, its nights, as the refridge still uses power but none comes in.
So in short, consider the power consumption but your usage patterns and climate as well.Comment
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NABCEP certified Technical Sales Professional
[URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]
[URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)
[URL="http://www.gaisma.com"]www.gaisma.com[/URL]Comment
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thanks Rich i will search. i live in Jacksonville Arkansas have a nice south facing location for ground mounting will build mounting bracket to be adjustable, we are upper middle age so opening fridge will be kept to a minimum, also can someone tell me if the freezer is kept closed and no electricity thru the night until power from panels kick it on would hurt the freezer?Comment
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thanks Rich i will search. i live in Jacksonville Arkansas have a nice south facing location for ground mounting will build mounting bracket to be adjustable, we are upper middle age so opening fridge will be kept to a minimum, also can someone tell me if the freezer is kept closed and no electricity thru the night until power from panels kick it on would hurt the freezer?
You could always add some additional insulation on the exterior.(I'm thinking 2" Polyisocyanurate foil faced, foil out)
There have been others who have taken chest freezers and converted them to refrigerators with very low power consumption by adding a secondary thermostat. these are not convenient but use much less battery than the conventional refrig/ freezer.NABCEP certified Technical Sales Professional
[URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]
[URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)
[URL="http://www.gaisma.com"]www.gaisma.com[/URL]Comment
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You could always add some additional insulation on the exterior.(I'm thinking 2" Polyisocyanurate foil faced, foil out)Comment
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