With a small battery bank you will not benefit from the larger alternator. The batteries can't absorb a charge that quickly.
Joel <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Mon, Oct 16, 2017 at 1:25 PM, David via CnC-List <cnc-list@cnc-list.com> wrote: > Let me expound a bit on alternators and engine size. When replaced my > dumb alternator with a Balmar set-up (alternator, smart Charger, digital > Duo etc ) on my 33 hp diesel Balmar recommended no more than the 80 amp > because of the loss of HP which I could ill afford. > > > If you have HP to spare...go for it. If not reconsider. > > > > 1981 40-2 > > David F. Risch > > (401) 419-4650 (cell) > > > ------------------------------ > *From:* CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Josh > Muckley via CnC-List <cnc-list@cnc-list.com> > *Sent:* Monday, October 16, 2017 12:47 PM > *To:* cnc-list@cnc-list.com > *Cc:* Josh Muckley > *Subject:* Re: Stus-List New Engine, now what size alternator > > Paul, Thanks for these more accurate "ratings". It definitely helps to > give an answer to the question of "what does good look like?" I have never > saught out actual ratings for refrigerator loads and I've never gotten a > AHr meter installed - besides the plethora of variables which make single > point AHr usage almost impossible to determine. It seemed like nobody > else had provided a frame of reference besides examples of their own setup > and I was kinda trying to describe a worst case numbers scenario to provide > an upper boundary to the project. Your numbers bring further clarity by > providing a lower boundary. > > You and other listers are absolutely correct that adding insulation is the > best way to reduce refrigerator AHr load. > > Thanks, > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > > > On Mon, Oct 16, 2017, 9:20 AM Dreuge via CnC-List <cnc-list@cnc-list.com> > wrote: > >> >> If you have a refrigeration load of 120AH/day, don’t waist money on >> increasing battery and charging capacity. >> >> Spend a little cash on better insulation or rebuild your box with more >> and better insulation. It is not unreasonable to shoot for a >> refrigeration load under 30AH/day. Just have a look at Wally’s Stella Blue >> page titled “Marine refrigeration and freezer on 22AH/day”(I recall he has >> a Frigoboat unit with keel cooler). Technautics claim that their >> CoolBlue system consumes “24AH/Day for a 7 cubic foot fridge/freezer with >> R-30” and “operates at ambient temperatures up to 120F without a loss in >> system efficiency.” Even the Isotherm claims their ASU SP3751 can achieve >> loads under 20AH/day. Now making ice or cooling down warm beer on a >> really hot day will likely have higher load demands, but the message is >> still the same. Insulation is cheaper than batteries and lasts a lot >> longer too. >> >> >> >> - >> Paul E. >> 1981 C&C 38 Landfall >> S/V Johanna Rose >> Fort Walton Beach, FL >> >> http://svjohannarose.blogspot.com/ >> <https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fsvjohannarose.blogspot.com%2F&data=02%7C01%7Cdavidrisch75%40msn.com%7C174374313e324a76649608d514b5ae0e%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636437692893291062&sdata=3Z6nZDYREvjXOkTwuBgdW3OftsiN%2B4KI22XBkKfEUaQ%3D&reserved=0> >> >> On Oct 14, 2017, at 2:02 PM, cnc-list-requ...@cnc-list.com wrote: >> >> Lets consider some hypothetical numbers based on the rep's info. If a >> 100w >> panel were %100 effective and operated for 8 hours, you would get 800w-hrs >> of power per day. 800w divided by 12v = 67amp-hrs. 67 divided by 24hrs = >> 2.8amps current draw on average. >> >> That kinda gives you a ball park for what type of loads you'll be facing. >> Round up to 5amps/hr if you like for margin. 5 *24=120AHr per day. >> >> _______________________________________________ >> >> The bills have started coming in for the year 2018 and have gone up >> again. October will be our fund raising month. Please consider sending a >> small contribution to help keep this list running. Use PayPal to send >> contribution -- https://www.paypal.me/stumurray >> <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.paypal.me%2Fstumurray&data=02%7C01%7Cdavidrisch75%40msn.com%7C174374313e324a76649608d514b5ae0e%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636437692893291062&sdata=7kc%2FxlWlAIBdFI5P498w2ktOhdYBxaO1jBXoIheJqII%3D&reserved=0> >> >> All contributions are greatly appreciated! >> > > _______________________________________________ > > The bills have started coming in for the year 2018 and have gone up > again. October will be our fund raising month. Please consider sending a > small contribution to help keep this list running. Use PayPal to send > contribution -- https://www.paypal.me/stumurray > > All contributions are greatly appreciated! > > -- Joel 301 541 8551
_______________________________________________ The bills have started coming in for the year 2018 and have gone up again. October will be our fund raising month. Please consider sending a small contribution to help keep this list running. Use PayPal to send contribution -- https://www.paypal.me/stumurray All contributions are greatly appreciated!
