Anonymous
Anonymous asked in EnvironmentGreen Living · 8 years ago

How come no company yet invented an Air Conditioner that is solar powered?

I live in Egypt and gets pretty hot in the summer, what is worse we have power outages which means no A/C in this heat. and their must be millions in my country alone who would pay good money for solar powered A/C. How come it has not been invented yet? are their any plans for it?

thank you

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  • paul h
    Lv 7
    8 years ago
    Best Answer

    Actually, there are a variety of methods to use solar power or heat energy to provide cooling effects or air conditioning and some companies do offer such systems.Some refrigerators use a propane or natural gas heat exchanger to provide cooling but the concepts are simple to use in other areas of air cooling. Heat pumps are another possible source of cooling....if you dig down several feet or meters, the ground temp is usually constant and cooler at around 50 degrees F.....that can be used to cool buildings with a length of piping, radiator, a low powered water pump and fan unit. Normal solar panels would require a lot of energy and high costs to run a conventional a/c system /compressor......there are alternatives to that. Pressurized CO2 or dry ice systems can also be used to cool air....I'm working on a system for my truck- driving brother to cool his cab while sleeping without running the engine. We already installed an ice chest chiller system that allows him 9 hours of sleep with 30 pounds of ice and a small pump and fan.

    http://www.solarac.com/

    "A company called GreenCoreAir has released an air conditioner than can be powered by a single 170 watt solar panel. The GreenCoreair conditioning unit can heat and cool a 600 square foot room. It runs on DC power, so there is no need to put an AC inverter between the solar panel and the air conditioner. This eliminates the power losses associated with converting AC to DC.

    When the sun is not out the unit runs on the battery bank which is integrated within the unit."

    http://www.metaefficient.com/air-conditioning/sola...

    http://www.treehugger.com/files/2008/07/the-rebirt...

    http://en.wikipedia.org/wiki/Solar_air_conditionin...

    "For example, a 100,000 BTU U.S. Energy Star rated[note 1] air conditioner with a high seasonal energy efficiency ratio(SEER) of 14 requires around 7 kW of electric power for full cooling output on a hot day. This would require over a 7 kW solar photovoltaic electricity generation system (with morning-to-evening, and seasonal solar tracker capability to handle the 47-degree summer-to-winter difference in Sun elevation angle). The photovoltaics would only produce full output during the sunny part of clear days.

    A solar-tracking 7 kW photovoltaic system would probably have an installed price well over $20,000 USD (with PV equipment prices currently falling at roughly 17% per year). Infrastructure, wiring, mounting, and NEC code costs may add up to an additional cost; for instance a 3120 watt solar panel grid tie system has a panel cost of $0.99/watt hour peak, but still costs ~$2.2/watt hour peak. Other systems of different capacity cost even more, let alone battery backup systems, which cost even more. Due to the advent of net metering allowed by utility companies, your photovoltaic system can produce enough energy in the course of the year to completely offset the cost of the electricity used to run air conditioning, depending on the amount of your electric costs you wish to offset.

    A more efficient air conditioning system would require a smaller, less-expensive photovoltaic system. A high-quality geothermal heat pump installation can have a SEER in the range of 20 (±). A 100,000 BTU SEER 20 air conditioner would require less than 5 kW while operating.

    Newer and lower power technology including reverse inverter DC heat pumps can achieve SEER ratings up to 26, the Fujitsu Halycon line being one notable example, but its requirements of 200–250 V AC input makes its use in the USA in smaller grids newer.

    There are new non-compressor-based electrical air conditioning systems with a SEER above 20 coming on the market. New versions of phase-change indirect evaporative coolers use nothing but a fan and a supply of water to cool buildings without adding extra interior humidity (such as at McCarran Airport Las Vegas Nevada). In dry arid climates with relative humidity below 45% (about 40% of the continental U.S.) indirect evaporative coolers can achieve a SEER above 20, and up to SEER 40. A 100,000 BTU indirect evaporative cooler would only need enough photovoltaic power for the circulation fan (plus a water supply)."

    Thin-cell solar panels or multi-spectrum solar will bring the price down to produce power compared to silicon based systems

  • jason
    Lv 4
    3 years ago

    Dc Power Air Conditioner

  • 8 years ago

    It's perhaps the cost of running the A/C on solar panels that have held people back. Solar panels are currently extremely inefficient (like they convert max 20% of the energy received into electricity) and they're also extremely expensive to manufacture. I guess maybe an alternative would be to try solar paneled fans? They use way less electricity than the air-conditioning does

  • 8 years ago

    Absorption solar air conditioners have been around for decades. http://www.solarpanelsplus.com/solar-air-condition...

    You can also buy a conventional A/C that happens to be powered by solar panels, but rather than build a special unit, the usual choice is to install grid-tied solar, which will power not only the A/C, but other devices in the house.

    There are plans for solar powered A/C on the internet, but be cautious about anyone selling plans. There are scams out there.

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  • Anonymous
    8 years ago

    It's perhaps the cost of running the A/C on solar panels that have held people back. Solar panels are currently extremely inefficient (like they convert max 20% of the energy received into electricity) and they're also extremely expensive to manufacture. I guess maybe an alternative would be to try solar paneled fans? They use way less electricity than the air-conditioning does

  • 8 years ago

    The Egyptians were smart enough to make ice from the heat of the sun thousands of years ago. Now they can't even look up online where to buy a solar powered air conditioner? I'll give you a hint- a company in Germany makes some.

  • 4 years ago

    It is theoratically possible but I disagree with the other responders. The difficulty is not in the solar panel, although you would need a large panel. The difficulty would be in housing the array of batteries that would be needed to kick start the unit on and otherwise maintain the power to run it. I am assuming your window unit would be in a window. An alternative would to somehow figure out how to install an alternator on the window unit as well which in theory would charge a battery as it ran similar to your car battery. You have a spinning motor. The Factory motor is probably not going to be large enough of a motor to handle an alternator as well as run the unit. The other problem would be designing a battery that could keep the motor running itself. In that case the solar energy wouldn't be needed and/or used only to maintain the battery when it was not in operation.

  • Anonymous
    8 years ago

    It's perhaps the cost of running the A/C on solar panels that have held people back. Solar panels are currently extremely inefficient (like they convert max 20% of the energy received into electricity) and they're also extremely expensive to manufacture. I guess maybe an alternative would be to try solar paneled fans? They use way less electricity than the air-conditioning does

  • Mike
    Lv 5
    8 years ago

    You can run an air conditioner on solar today. It will just cost a fortune for the solar equipment and require a huge space for the solar panels.

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    5 years ago

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