Pearson Boats - Common Systems > Plumbing and Galley Systems

Idea's for a new fridge.

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Valor:
Hi Ed,

I was hoping you would chime in here. If you don't mind me asking, how many AH in a 24hr period is YOUR boat drawing just to run the fridge? With your 200 watt solar setup, how many AH are you replacing in a 24hr period on avg? Thanks!

Michael

rkfitz:
Kathy is on a ball at Block Island for the summer, I asked her to make an hourly record of solar output for a day with our 360 watt system. It averaged 10 amps/hour over 13 hours with cloudy skies. Our house bank of 3 size 29 batteries gives us 380 reserve capacity (630 reserve capacity × 0.6) and we normally use 80-120 amps over 24 hours. This includes using 25 amps for the water heater for one hour. One battery is in the stern with the starter battery, the other two are mounted on top of the keel. There is an 1800 watt inverter on board so there are movies every night for the grandkids (blu ray or netflix using my cellphone for wifi), a microwave, and all the other assorted electronic devices that need charging. I have a  Honda generator but haven't carried it on board for years, never need it. With this setup power is never a concern.

Valor:
@ RKFITZ. Thanks for taking the time to document your production rates. I feel a lot better knowing those figures.

Based on what I learned and what other people on this and some of the other boards have mentioned, I think my calculations are really close and if I'm off, it should be by a small margin. Realistically, If I am short on charge rate then 2 thing are going to happen. 1- Get another panel or 2- do as Ed has done and purchase a suitcase generator, plug it into the shore power and use the onboard charger to get everything topped off. If I could get by a week at a time without dipping below 60% of my capacity then I would be totally fine with running the generator once a week to get the bank back up to float.

SailRxSin:
Valor, we are thinking of doing this exact same thing.  Did you go through with it?   Would love to see pics if so.

grzano:
Hi,

I appreciate all of you and your comments. I am considering installing the Isotherm 2501 unit in my 323. I see that RKfitz did the same thing, and this is where I am getting the idea. The post is old, so perhaps none of you will still be on this site, but I was wondering if anyone had any photos of this unit inside the fridge unit. It measures 10X5X17, so I was wondering how he mounted it and whether you can put things you want to freeze in the loop coil?

I hope for replies.

Thank you.

Greg

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