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ONE INVERTER CONVERT 12V DC TO 220V AC,ANOTJER 48V DC TO 220V AC.WHICH ONE IS BETTER TO SAVE ENERGY?
Q&A: IS THERE ANYONE IN CALIFORNIA WHO WANTS SOLAR ENERGY AND DOESNT KNOW WHERE TO GET IT?
about 20 hours ago - No comments
Question by : Is there anyone in California who wants solar energy and doesnt know where to get it? Hi i have a lot of questions in regards to solar energy, and im really interested in it for the sake of California. Is there anyone who feels the same way i do? please include your
HOW TO SAVE ENERGY AT SCHOOLS?
about 1 day ago - 9 comments
Question by Belle: How to save energy at schools? I’m doing a speech on preventing global warming and starting the fight at our homes and schools. I need some good ideas on how to conserve energy in schools. Please Help!! —————————————— Answer by Cap10Walk or ride your bike to school when the weather is good
100WT ENERGY SAVING BULB IN A SOCKET RATED FOR A 60WT STANDARD BULB?
about 2 days ago - 2 comments
Question by wilhem: 100wt energy saving bulb in a socket rated for a 60wt standard bulb? My standard ceiling light sockets suggest that I use standard 60 watt bulbs. The cold light of a 60 watt flourescent bulb is just not enough light. Can I use a 75 or 100 watt flourescent bulbs instead. ——————————————
TO SAVE ENERGY ON A SUNNY WINTER DAY, IS IT BETTER TO LET THE SUN IN THE WINDOWS OR DRAW THE THERMAL CURTAINS?
about 3 days ago - No comments
Question by committed1985: To save energy on a sunny winter day, is it better to let the sun in the windows or draw the thermal curtains? Both are excellent answers. Thank you! I do have a big gap at the top of my energy curtains, so I have to fix that. My windows are old,
HOW MUCH SOLAR ENERGY (KJ) WOULD HAVE TO BE…?
about 3 days ago - No comments
Question by Ashley J: How much solar energy (kJ) would have to be…? How much solar energy (kJ) would have to be transferred to a 145.0 foot length of asphalt highway that is 49.0 feet wide and 25.0 centimeters deep in order to raise the temperature 5.00 oC ?The average density of asphalt is 721
IS IT TRUE THAT ONE CAN SAVE SOME COST OF ELECTRICITY BY PULLING THE PLUG OUT OF THE RECEPTACLE?
about 4 days ago - 6 comments
Question by PHIL: Is it true that one can save some cost of electricity by pulling the plug out of the receptacle? Is it worth the effort? —————————————— Answer by Chuck PThat would be on things that have pre warmers in them like TV sets, no it’s not worth the effort. Answer by William Bonly
IS IT SAFE TO UNPLUG YOUR COMPUTER TO SAVE ENERGY?
about 5 days ago - 1 comment
Question by vyra h: Is it safe to unplug your personal to save energy? Will you lose any of your info? —————————————— Answer by Brian SYou’ll want to turn it off before you unplug it, but no… there is no danger of losing what is stored in that case. Answer by John RIt’s safe but
WHY IS GERMANY GOOD FOR USING WIND ENERGY?
about 6 days ago - 4 comments
Question by : Why is Germany good for using wind energy? I know they use it, but what are some features of Germany that allows them to use it? —————————————— Answer by Haydenwind? Answer by Graham EarleIt’s the German diet which produces abnormally high levels of flatulence. Answer by ninaCause there is a lot of
WHAT IS YOUR OPINION ON PEOPLE BEING ALLOWED TO DRY THEIR CLOTHES OUTSIDE IN ORDER TO SAVE ENERGY?
about 6 days ago - No comments
Question by T: What is your view on people being allowed to dry their clothes outside in order to save energy? A number of states are making it against the law to dry your clothes outside on clothes lines. Is not this going green like we have been told to do?? What is your view
WHAT ARE SOME ENVIRONMENTAL BENEFITS OF WIND ENERGY?
about 1 week ago - No comments
Question by bballer: What are some environmental benefits of Wind Energy? I can’t find any good sites. A good reply would be great but a good site will be worth an simple 10 points. Thanks! —————————————— Answer by Headtater0 carbon electricity. It is as simple as that. The wind is free and is abundant. The
about 2 years ago
1 watt=1 joule/second
a joule is the base measurement of energy, so if they have the same wattage they use the same amount of energy.
about 2 years ago
Whatever is supplying the sorce DC voltage is where you save energy. What is the sorce of the 12V DC? What is the source of the 48V DC? It is the cost of producing the 12 or 48 volts that you need to power the inverter that you must calculate. It does not matter what the output wattage of the inverter is it is what the cost of the input voltage to power the inverter is.
about 2 years ago
There is no energy savings per inverter input voltage. Only savings there would be is in the size of wire. 12 volts takes larger cables from the battery bank to the inverter. And from the Solar panels to the charge controller. With 48 volts you might be able to get a way with using a 10 awg (good to 30 amps) wire or 8 awg to be on the safe side. 12 volts you would need a pretty large wire with higher cost.
1250 watts divided by 48 volts is 26 amps.
1250 watts divided by 12 volts is 104 amps.
Oh yeah. The 48 volt inverter might cost a little more. So all in all toss a coin and take the one you want to deal with. 12 volt is more common