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#1
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Watson A.Name - "Watt Sun, the Dark Remover" wrote:
My attitude is that rather than try to do this (and in the process lose reliability), it's better to go supersize on the cells, add more area and overall capacity to get you thru the cloudy days, and have a higher capacity overall. The argument usually goes that getting, say, 10-20% more power from a better charge controller (one of these so-called 'maximum power point controllers') can be cheaper (in additional expenditures) than getting 10-20% larger panels. It's sometimes difficult to show, though, particularly on small systems -- but MPPT controllers have been getting cheaper for awhile, now, and I expect that eventually all but the cheapest/smallest will have this functionality. ---Joel Kolstad |
#2
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That is exactly the point, Joel. Upsizing 20% is several times more expensive
compared to providing an intelligent switcher to match to the illumination or to adapt a panel voltage that isn't matching the storage devices. That situation won't change unless there is a tremendous breakthrough in technology or serious new government subsidies. As to reliability, a switcher that is designed correctly and conservatively should easily outlasts the cells. Even for small installations it is easy, especially in view of the large variety of micro controllers that retail for a few Dollars. One of these plus a few discretes and an inductor can do the trick. Regards, Joerg. |
#3
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That is exactly the point, Joel. Upsizing 20% is several times more expensive
compared to providing an intelligent switcher to match to the illumination or to adapt a panel voltage that isn't matching the storage devices. That situation won't change unless there is a tremendous breakthrough in technology or serious new government subsidies. As to reliability, a switcher that is designed correctly and conservatively should easily outlasts the cells. Even for small installations it is easy, especially in view of the large variety of micro controllers that retail for a few Dollars. One of these plus a few discretes and an inductor can do the trick. Regards, Joerg. |
#4
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Joel Kolstad wrote:
Watson A.Name - "Watt Sun, the Dark Remover" wrote: My attitude is that rather than try to do this (and in the process lose reliability), it's better to go supersize on the cells, add more area and overall capacity to get you thru the cloudy days, and have a higher capacity overall. The argument usually goes that getting, say, 10-20% more power from a better charge controller (one of these so-called 'maximum power point controllers') can be cheaper (in additional expenditures) than getting 10-20% larger panels. It's sometimes difficult to show, though, particularly on small systems -- but MPPT controllers have been getting cheaper for awhile, now, and I expect that eventually all but the cheapest/smallest will have this functionality. Last nite (Tue, 9pm) I watched a prog on PBS that was about getting people to use more renewable resources, hosted by Cameron Diaz (hot blonde movie star), who drives a Prius. They talked about getting every home to have a solar panel, and selling power back to the utility co. She also said that if everyone in the U.S. drove a hybrid vehicle, we could completely eliminate oil shipments from the middle east. Well, I'd go out and buy a Prius, but one of the guys at work has had his new Prius since xmas and it took him 4 months or so to get it after submitting a $500 earnest check to several dealerships to get on their waiting list. They say they're trying to make more of them, but I think they really don't want the prices to fall, since they're expensive to make. In any case I'd like more solar power, but the initial outlay is _not_ cheap. ---Joel Kolstad |
#5
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Watson A.Name \"Watt Sun - the Dark Remover\" wrote:
Last nite (Tue, 9pm) I watched a prog on PBS that was about getting people to use more renewable resources, hosted by Cameron Diaz (hot blonde movie star), who drives a Prius. They talked about getting every home to have a solar panel, and selling power back to the utility co. She also said that if everyone in the U.S. drove a hybrid vehicle, we could completely eliminate oil shipments from the middle east. Well, I'd go out and buy a Prius, but one of the guys at work has had his new Prius since xmas and it took him 4 months or so to get it after submitting a $500 earnest check to several dealerships to get on their waiting list. They say they're trying to make more of them, but I think they really don't want the prices to fall, since they're expensive to make. In any case I'd like more solar power, but the initial outlay is _not_ cheap. While I'm all for using more renewable resources, and especially ones that are environmentally friendly, it doesn't make sense to cause yourself financial pain doing so. It makes sense to buy the must fuel efficient vehicle that fits your needs but not to overspend simply because it's a little better on the gas mileage. That said, there are many things you can do that are quite affordable. First, you could conserve energy. Replace old appliances with more efficient ones, insulate your home better, weather-strip, storm windows, compact fluorescent lights, activate the power saving on your computer, use xeriscaping and all that lot. If you are a typical homeowners then conservation alone could be as effective as putting up a $30,000 solar panel setup. Then you could buy more affordable renewable energy equipment such as solar water heaters, air heaters, ovens, stoves and the like. You could also change your diet to include less animal products. Raising animals to produce food takes many times more resources (which often means energy) as plants alone require. There are also many alternatives to a Prius. One option would be to get a diesel powered car and use biodiesel or get it converted to run on straight vegetable oil. Another option is to buy an electric car. Currently the only ones available are "city cars" which turn out to be glorified golf carts but they are suitable for very local driving and can sometimes work as a second car. Some folks have even had great success with bicycles of various flavors. If you simply must have a hybrid vehicle then a much wider selection of them should be available within the next 10 to 15 years. Anthony |
#6
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Anthony Matonak wrote:
Watson A.Name \"Watt Sun - the Dark Remover\" wrote: Last nite (Tue, 9pm) I watched a prog on PBS that was about getting people to use more renewable resources, hosted by Cameron Diaz (hot blonde movie star), who drives a Prius. They talked about getting every home to have a solar panel, and selling power back to the utility co. She also said that if everyone in the U.S. drove a hybrid vehicle, we could completely eliminate oil shipments from the middle east. Well, I'd go out and buy a Prius, but one of the guys at work has had his new Prius since xmas and it took him 4 months or so to get it after submitting a $500 earnest check to several dealerships to get on their waiting list. They say they're trying to make more of them, but I think they really don't want the prices to fall, since they're expensive to make. In any case I'd like more solar power, but the initial outlay is _not_ cheap. While I'm all for using more renewable resources, and especially ones that are environmentally friendly, it doesn't make sense to cause yourself financial pain doing so. It makes sense to buy the must fuel efficient vehicle that fits your needs but not to overspend simply because it's a little better on the gas mileage. It's not a "little" better, it more than double - 50+ MPG compared to 25! [snip] You could also change your diet to include less animal products. Raising animals to produce food takes many times more resources (which often means energy) as plants alone require. Right, but it's **you** (see above) that said to not cause yourself financial pain. Well, I _try_ to do my part to eat little or no beef, instead eat chicken. But I _have_ to pay a premium to do so, even tho it's cheaper to bring chicken to the table, just because of supply and demand issue. People consume less beef so the price drops below chicken, not because it's cheaper. So I and everyone else hasto pay extra for, helping save resources. Just what you said _didn't_make_ sense_. There are also many alternatives to a Prius. One option would be to get a diesel powered car and use biodiesel or get it converted to run on straight vegetable oil. Another option is to buy an electric car. Again, you're asking for people to make a financial sacrifice when buying an electric vehicle. The last I checked, it cost $46,000 to purchase a RAV4 EV, with a good chunk of that going to the installation of an electric charger in the owner's garage. According to you, that financial pain 'doesn't make sense'. If you simply must have a hybrid vehicle then a much wider selection of them should be available within the next 10 to 15 years. In the next 10 to 15 years, the situation may be much, much worse. The big worry in the near term seems to be China, with 1/5th of the world's population, which may have a growing economy that will gobble up an ever growing part of the world's non-renewable energy resources. In 10-15 years, it may be too late! The price of fuel in europe is already over $5 a gallon, and we Americans are currently bitching about having to pay over $2! Well, wait until it goes up to $3, or more! All those SUV owners in the U.S. will be taking tbe bus to work. Time will tell! Anthony |
#7
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![]() "Watson A.Name "Watt Sun - the Dark Remover"" wrote in message ... Anthony Matonak wrote: Watson A.Name \"Watt Sun - the Dark Remover\" wrote: Last nite (Tue, 9pm) I watched a prog on PBS that was about getting people to use more renewable resources, hosted by Cameron Diaz (hot blonde movie star), who drives a Prius. They talked about getting every home to have a solar panel, and selling power back to the utility co. She also said that if everyone in the U.S. drove a hybrid vehicle, we could completely eliminate oil shipments from the middle east. Well, I'd go out and buy a Prius, but one of the guys at work has had his new Prius since xmas and it took him 4 months or so to get it after submitting a $500 earnest check to several dealerships to get on their waiting list. They say they're trying to make more of them, but I think they really don't want the prices to fall, since they're expensive to make. In any case I'd like more solar power, but the initial outlay is _not_ cheap. While I'm all for using more renewable resources, and especially ones that are environmentally friendly, it doesn't make sense to cause yourself financial pain doing so. It makes sense to buy the must fuel efficient vehicle that fits your needs but not to overspend simply because it's a little better on the gas mileage. It's not a "little" better, it more than double - 50+ MPG compared to 25! [snip] You could also change your diet to include less animal products. Raising animals to produce food takes many times more resources (which often means energy) as plants alone require. Right, but it's **you** (see above) that said to not cause yourself financial pain. Well, I _try_ to do my part to eat little or no beef, instead eat chicken. But I _have_ to pay a premium to do so, even tho it's cheaper to bring chicken to the table, just because of supply and demand issue. People consume less beef so the price drops below chicken, not because it's cheaper. So I and everyone else hasto pay extra for, helping save resources. Just what you said _didn't_make_ sense_. There are also many alternatives to a Prius. One option would be to get a diesel powered car and use biodiesel or get it converted to run on straight vegetable oil. Another option is to buy an electric car. Again, you're asking for people to make a financial sacrifice when buying an electric vehicle. The last I checked, it cost $46,000 to purchase a RAV4 EV, with a good chunk of that going to the installation of an electric charger in the owner's garage. According to you, that financial pain 'doesn't make sense'. If you simply must have a hybrid vehicle then a much wider selection of them should be available within the next 10 to 15 years. In the next 10 to 15 years, the situation may be much, much worse. The big worry in the near term seems to be China, with 1/5th of the world's population, which may have a growing economy that will gobble up an ever growing part of the world's non-renewable energy resources. In 10-15 years, it may be too late! The price of fuel in europe is already over $5 a gallon, and we Americans are currently bitching about having to pay over $2! Well, wait until it goes up to $3, or more! All those SUV owners in the U.S. will be taking tbe bus to work. Time will tell! Anthony Surprisingly enough some SUV owners actually need the SUV at the time of purchase, I personally drove through snow 70cm deep on a regular basis prior to my recent job change. Just because the people in southern California don't need it doesn't mean no one does. Charles |
#8
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Charles W. Johnson Jr. wrote:
[snip] While I'm all for using more renewable resources, and especially ones that are environmentally friendly, it doesn't make sense to cause yourself financial pain doing so. It makes sense to buy the must fuel efficient vehicle that fits your needs but not to overspend simply because it's a little better on the gas mileage. It's not a "little" better, it more than double - 50+ MPG compared to 25! [snip] Surprisingly enough some SUV owners actually need the SUV at the time of purchase, I personally drove through snow 70cm deep on a regular basis prior to my recent job change. Just because the people in southern California don't need it doesn't mean no one does. Charles Surprisingly enough, many of those people who bought a big Ford Expedition or GM Yukon could have got by with a lot smaller, and hence a lot more economical SUV. ALso, there are vans, too, with a much better gas mileage. Surprisingly enough, it's not about whether or not it's a SUV or a truck or whatever, it's whether or not it's a gas guzzler. |
#9
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![]() "Watson A.Name "Watt Sun - the Dark Remover"" wrote in message ... Charles W. Johnson Jr. wrote: [snip] While I'm all for using more renewable resources, and especially ones that are environmentally friendly, it doesn't make sense to cause yourself financial pain doing so. It makes sense to buy the must fuel efficient vehicle that fits your needs but not to overspend simply because it's a little better on the gas mileage. It's not a "little" better, it more than double - 50+ MPG compared to 25! [snip] Surprisingly enough some SUV owners actually need the SUV at the time of purchase, I personally drove through snow 70cm deep on a regular basis prior to my recent job change. Just because the people in southern California don't need it doesn't mean no one does. Charles Surprisingly enough, many of those people who bought a big Ford Expedition or GM Yukon could have got by with a lot smaller, and hence a lot more economical SUV. ALso, there are vans, too, with a much better gas mileage. Surprisingly enough, it's not about whether or not it's a SUV or a truck or whatever, it's whether or not it's a gas guzzler. A van with 4X4 or allwheel drive and ground clearance is an SUV. Gas mileage becomes secondary if every time you try to move you get stuck. The small SUV hold a family of 5 uncomfortably the larger hold a family of seven, mom, dad, grandma and grandpa + 2 or more kids comfortably plus will pull that 30'+ mobile home they camp in. Again not everyone lives in Southern California where you can't do anything fun least you violate some environmentalists dream. Personally I bought the smallest vehicle I felt could do the job I needed it to. That turned out to be a V6 that get about 25mpg highway. Charles |
#10
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![]() "Watson A.Name "Watt Sun - the Dark Remover"" wrote in message ... Charles W. Johnson Jr. wrote: [snip] While I'm all for using more renewable resources, and especially ones that are environmentally friendly, it doesn't make sense to cause yourself financial pain doing so. It makes sense to buy the must fuel efficient vehicle that fits your needs but not to overspend simply because it's a little better on the gas mileage. It's not a "little" better, it more than double - 50+ MPG compared to 25! [snip] Surprisingly enough some SUV owners actually need the SUV at the time of purchase, I personally drove through snow 70cm deep on a regular basis prior to my recent job change. Just because the people in southern California don't need it doesn't mean no one does. Charles Surprisingly enough, many of those people who bought a big Ford Expedition or GM Yukon could have got by with a lot smaller, and hence a lot more economical SUV. ALso, there are vans, too, with a much better gas mileage. Surprisingly enough, it's not about whether or not it's a SUV or a truck or whatever, it's whether or not it's a gas guzzler. A van with 4X4 or allwheel drive and ground clearance is an SUV. Gas mileage becomes secondary if every time you try to move you get stuck. The small SUV hold a family of 5 uncomfortably the larger hold a family of seven, mom, dad, grandma and grandpa + 2 or more kids comfortably plus will pull that 30'+ mobile home they camp in. Again not everyone lives in Southern California where you can't do anything fun least you violate some environmentalists dream. Personally I bought the smallest vehicle I felt could do the job I needed it to. That turned out to be a V6 that get about 25mpg highway. Charles |
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