Your Questions About Solar Powered Air Conditioner

Daniel asks…

Solar Powered Air Conditioner? Is it enough power?

Here is a 100-Watt Solar Panel Kit ( http://www.newegg.com/Product/Product.aspx?Item=N82E16882260013&cm_re=solar_power-_-82-260-013-_-Product ),
my MAIN QUESTION is, what does it mean to say that this is a 100 watt solar panel?
Does it mean that it can store 100 watts an hour/minute/second in a battery?
Can it store enough power into a battery to power a window A/C which requires 1900/1880 Watts to Condition Air?

ssadmin answers:

A 100 watt solar panel will make 100 watts for every second that it has perfect angle and sunlight. On the average, there are only 5 hours of equivalent perfect sunlight per day. That means your 100 watt panel will make 500 watt-hours or .5 kw-hrs per day.

Your AC needs 1900 watts per hour and say it runs 24 hours per day, that means it needs 45,600 watt hours or 45.6 kw-hours. You would need 45.6/.5 91.2 of them panels to make it work. In the summer you might need 70 and in the winter 110 of them. Plus you'd need batteries, lots of batteries so that the panels would make energy when the sun shines and return it when the sun goes down you'd need to store 45.6 kw-hr of energy. Thats about 4000 amp hours at 12 volts Large batteries are about 100 amp hours, so you'd need 40 batteries.

William asks…

Are Solar Powered Air Conditioners(Cooling) available in India?

I live in Chennai- State of Tamil Nadu (India) where it can get really hot and humid during Summer. There is ample Sunlight throughout the year. An Air Conditioner is a necessity especially during Summer. Can I get a Solar Powered AC in India? Can anyone give me the names of some manufacturers? Where can I find some in Chennai? Thank you!

ssadmin answers:

There is in pakistan.check in big factorys.

Helen asks…

How many solar powered air conditioners will it take to cool the planet?

ssadmin answers:

The air conditioners will put out more waste heat than the amount of heat they remove so it actually isn't workable unless you can find somewhere other than Earth to put the waste heat.

I'm afraid that if you want to cool the planet down you're just going to have to reduce the CO2 concentration in the atmosphere (and in the meantime stop emitting so much from coal burning when you've already got well developed fission technology).

Mridul: Air conditioners which use CFC's aren't being made any more, we've pretty much phased out use of those.

Paul asks…

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

ssadmin answers:

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.”

Solar Powered Air Conditioner Released

http://www.treehugger.com/files/2008/07/the-rebirth-of-cool.php

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

“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

Ruth asks…

Do solar powered air conditioners really work?

ssadmin answers:

Some good answers there on Absorption chillers etc. Solar powered air conditioners are the air conditioners of the future. At present the power rating of the AC requires a big solar panel to give the necessary energy to run it. So in fact we cannot call it a solar powered one. But in future the same concept can be converted into a more efficient and compact unit where by the solar panel will be part of the AC and then we can call it a solar powered AC. I am confident the break through will come in the near future. Just think back how your desk top computer was once upon a time and then you can realize that this concept is not a fiction but going to be a reality.

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