Prove it! Battery-powered air conditioning DEMO on a new sailing yacht.

This new Jeanneau 440 was ordered without a generator or air conditioning. Instead, the customer hired BoatRx to design and install a complete 48VDC lithium battery power system that gets rapidly charged from the Integrel System mounted on the main propulsion engine. By pairing this powerful battery system with a high-efficiency VRV air conditioning system from Termodinamica, the vessel can maintain total climate control 24/7 on only a few hours of engine run time each day.
This video attempts to demonstrate a real-life test of the air conditioning system on a hot night at the dock in Deltaville, VA.
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[@johnmagnan759]

Impressive but one flaw in the experiment. You had no human heat generators in the staterooms. Still given that I'll bet the morning battery reading would have probably been 30%

[@robertgranafei2781]

What a useless video. The main questions any viewer would have are :1) how big is the battery bank, 2) type of batteries, 3) the BTU size of the A/C unit, 4) how many amp hours were consumed, 5) the run time, and 6) the per hour consumption of amps. None of these were addressed. Rather we watched screens being tapped endlessly. Pass on this video.

[@boatrx]

Sorry you found this useless! There are more details about this system in the video that preceded it. 1) 22kWh @ 48VDC 2) Victron Smart Lithium 3) 36K BTU VRV Compressor with 54k BTU of air handler capacity. 4) About 100 AH @48V 5) 8 hours 6) About 10-14 amps @48V average at night

[@Murphy-Kahlen]

@@boatrx can you translate that to a 12V system?

[@GregHathorn]

and don't recall anyone asking you to pay to watch the video.... don't be a jerk.

[@markpitchford7375]

@@Murphy-Kahlen you just multiply by 4. 22kwh is 1833AH in a 12V system 400AH at 12v 400A-560A at 12V average usage at night

[@claudiof.barbano5530]

Do you use, have a need for, A/C soft starters?

[@Arafury57]

I most places in the coastal US a sea water heat exchanger would be more than adequate for cabin cooling.

[@jayelwin]

I believe all marine AC units pump sea water on the compressor side.

[@TimAch-p2c]

What of the 360 watts of heating removed from the system? 4 people x 90 watts while sleeping x 8 hours is just shy of 3kWh of heat missing from this "real world" demonstration.

[@blueyhis.zarsoff1147]

How big is the battery bank?

[@boatrx]

22kWh

[@JohnBraman413]

@@boatrx 458 ah battery bank?

[@markpitchford7375]

@@JohnBraman413 That's 458AH on a 48v system. That's 1833 ah on a 12V system. You'd need 4000-5000W solar to keep it topped.

[@stanleybest8833]

There is no cunning to stretch your cool. No explanation of humidity. No demonstration of how the system is installed. Most boat AC systems throw off their heat through the water. 1500 watts is excessive. If a boat chose a modern camping unit, size and build would be excellent. The AC could work on land. It would be lighter and much easier to install and maintain. Thumbs down.