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Forum: Electrical: Batteries, Generators & Solar

19-03-2017, 11:26

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

A good full size 15-19 cf fridge/freezer might use 1.5 KW per day if one picks a low energy usage one. Which for the size of the box is not too bad. It really is a function of heat gain through the...

Forum: Electrical: Batteries, Generators & Solar

17-03-2017, 22:54

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

It took 240 watts of solar panels (2 12V panels) to keep the old fridge happy. So not lots of SF required. I took one of the salon berths and made it a short berth (cat food storage) and fridge. ...

Forum: Electrical: Batteries, Generators & Solar

17-03-2017, 22:45

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

10 years ago I needed a fridge on the boat. I looked that the $900 12V AB units and thought to myself, they seem a bit spendy. But I'm also an engineer who sometimes plays with refrigeration. ...

Forum: Electrical: Batteries, Generators & Solar

15-03-2017, 13:43

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

Ah but it's not per hour, more like every 1.33 to 1.5 hours. In 55-74 degree weather the fridge is using about 40-42 ah a day. So not too bad. I expect it will run more in summer as did the old...

Forum: Electrical: Batteries, Generators & Solar

15-03-2017, 12:44

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

As someone who has had a 120V fridge for over 10 years. It's not that bad. My old fridge was a pig and used roughly 60 ah a day in 90+ degree heat. For a outlay of under $200 for the fridge and...

Forum: Electrical: Batteries, Generators & Solar

14-03-2017, 17:07

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

^^^^ THIS.

The issue is amount of heat rejected from the box. Assuming the same basic design but one fridge has a 120V (or 220V) compressor and the other a 12v compressor, all have to remove...

Forum: Electrical: Batteries, Generators & Solar

14-03-2017, 14:32

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

Some of us caught on that you were EU with the 230V and class A+++ ratings (which we totally lack in the USA btw) I wish we could buy 120V fridges in the USA with a 64kwh per year rating. Most...

Forum: Electrical: Batteries, Generators & Solar

14-03-2017, 12:30

Replies: 57

Refrigerator: AC vs. DC

Views: 13,297

Posted By sailorchic34

Re: Refrigerator: AC vs. DC

I just upgraded my old inefficient 120V fridge that was dying after 10 years on the boat, to a new far better 120v two door fridge (Edgestar 3.1CF) that uses only 5.7 amps dc when running (72...

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