In my house I have 3 small air conditioning systems running at 8000 BTU/hour each. I would like to power them with solar energy. I found that I would have to generate: 3.41 BTU/hr = 1 Watt 8000 BTU/hr = 2346 Watts That means to power the 3 units for 4 hours/day, I would need (2346 Watts* 4 hours/day * 3) = 28152 W*hours/day, or approximately 30 kWh/day. I checked that in my region, I have 7 hours of sun each day. So to generate 30kWh/day, I will need something like 5kWh/hour = 5000 Watts. Are these calculations right? Going further, I'm able to generate now (i have 4 * 250 watts solar panels) 1kW, but I generate it 7 days per week, and I use the air conditioners, maybe 2 times/week. Thinking in this scenario, I don't have to be so concerned about how much energy can I generate hourly/daily, but weekly right? Another important point here is the batteries where I will store the generated energy right? Any suggestion which kind of batteries set should I use?

Actually your AC is much more efficient than that because it is a heat pump, not a direct conversion of electrical watts in to BTU of heat moved per hour. If you know your SEER rating, you can just divide the BTU/h by SEER to get Watts. An SEER of 10 is very common so that would mean each AC needs 800 W to move 8000 BTU per hour. BTW, it's good to keep your units straight between energy and power (which is the rate that energy is being used). Watt-hours and BTU are energy. Watts and BTU/hour are power. And your AC is not 8000 BTU, it's 8000 BTU/hour. Cannot answer #1 or #3 but WRT #2, with intermittent usage you want enough storage to last you approximately 2x to 3x your longest period of A/C use without sufficient light to generate the necessary power. Usually this will be at night - but depending on where you live it also might be on an extended period of hot, rainy days. For instance, recently in Maryland we had over a week of 80-90 degree days with POURING rain and 100% humidity.

Just wondering - instead of going with batteries, can you go solar-on-grid, where your excess energy goes into the grid (and you get paid for it) and when your solar isn't generating enough, you can draw from the grid?Browse other questions tagged air-conditioning solar-panels alternative-energy or ask your own question.Air Conditioner Uses Just 600 watts, 3 or 4 Solar Panels For homeowners considering solar in hot climates, the back of the solar panel is key to solar efficiency. install outside ac unitSolar panels need to be cool to work most efficiently.cleaning your outside ac unit And that’s where the Coolerado’s novel approach to air conditioning comes in:hard start kit ac unit Air conditioning accounts for an astounding 50 percent of the summer peak power load in California.

But the energy cost of A/C is a hidden cost for home buyers. Nobody really looks at an air conditioned home and sees the hundreds of thousands that it can cost over the years to stay cool. Like a refrigerator, an air conditioner works by piping a chemical refrigerant through cycles of compression and expansion. The refrigerant absorbs heat from cool interior air and releases it to the hot air of the great outdoors. Heat naturally flows from a hot area to a cold one so an air conditioner has to mechanically compress the gaseous refrigerant into much hotter liquid form and pump it through outdoor coils from which it can release the heat it has absorbed. A typical air conditioner can use 6,000 watts. That takes a lot of energy, usually from a fossil-fueled power plant. But let’s say you are considering putting your own power plant on your roof. You have decided to go solar. Instead of putting in another 6 KW of solar power on your roof to power a traditional energy guzzling air conditioner, take a look at a completely different kind of air conditioner to go with your solar installation: The Coolerado can cool 3,000 square feet with just 600 watts of power;

or just (depending on watts) 3 or 4 solar panels. That’s one-tenth the amount of power the traditional air conditioning system needs. This novel air conditioner forms a synergistic combo with solar. Solar panels work most efficiently in cool weather. (That is why panels in foggy places like San Francisco can be surprisingly effective in generating solar electricity.) The Coolerado exhausts air to the outdoors in the process of sending cooled air indoors. So you can use the moving air to cool off the panels, relatively speaking: solar panels can get as hot as 150 degrees on a hot sunny day, but the fan blowing air exhaust from the Coolerado can bring them down to about 110 degrees, making them produce electricity more efficiently than un-cooled solar panels in the same climate.Updated Solar panels can very effectively power air conditioning units.One of the advantages of using solar panels for this purpose is that you could design the system to not use batteries... so no air conditioning at night.

Air conditioning is a terrible use of electricity resources. Electricity should not be used for heating or cooling. (except the rare exceptions.) So no refrigeration either.If building are in hot climates, they should be built partially underground to use the cooling power of the earth.What kind of completely sustainable building would Brian Fey like to build in the Bosque Village? by Brian Fey on Bosque VillageI so imagine solar panels could be used to decrease the temperature in root cellars during the day.Each system is a case by case decision.Written Solar can just do anything you want. /hybrid/ThanksBelifal Innovations & Technologies is India's leading solar energy equipment supplier.Solar Product Manufacturer In Mumbai (Solar Product Manufacturer In Mumbai)Our categories includeSolar Fan Buy Solar Table Fan Solar Wall Fan Solar Pedestal Fan Solar Tubelights Solar LED Tubelights Rechargeable DC TubelightsBelifal high quality solar powered led Road lightsSOLAR LANTERNS -Belifal new solar powered productsShop - Solar Charge ControllerSolar Inverters Solar Inverter Buy Solar Inverter Made In IndiaSolar Power Plants Belifal Solar Integrators Install Power PlantsWritten Air Conditioners can be powered by solar panels.