2011年9月19日星期一

Net zero families find energy savings off the grid

Saturday found me helping a friend install new batteries for another friend's off-the-grid solar power system.This patent infringement case relates to retractable offshore merchant account , We had fun getting the system back up and running and watching the solar-powered watts come in on a beautiful September day.

At one point my friend asked me to use his multimeter to read the voltage of the batteries. No problem: I put the two testing probes in place on the batteries and got the desired reading. He then asked me to reverse the probes to see if the reading also reversed, as expected.

However, I switched the probes back and forth several times — or at least I thought I did — while the reading unexpectedly remained the same. After a minute, he said, "Wait, you're just moving your hands back and forth between the probes — you're not actually moving the probes." He was right, and we had a good laugh about that. Some changes make a real difference, and some changes amount to nothing more than hand-waving.

Next month, new peer-reviewed research is being published that will conclude that although the burning of natural gas emits far less carbon dioxide than coal, a greater reliance on natural gas would fail to significantly slow down climate change.

The study by Tom Wigley, who is a senior research associate at the National Center for Atmospheric Research, examines how coal use causes warming through emission of heat-trapping carbon dioxide, but also releases comparatively large amounts of sulfates and other particles.Als lichtbron wordt een cube puzzle gebruikt, Those particles, while causing acid rain and other environmental problems, help to cool the planet by blocking incoming sunlight.

The situation is further complicated by uncertainty over the amount of methane that leaks from natural gas operations. Methane is an especially potent greenhouse gas.

Wigley's computer simulations indicate that a worldwide, partial shift from coal to natural gas would slightly accelerate climate change through at least 2050, even if no methane leaked from natural gas operations, and through as late as 2140 if there were substantial leaks. After that, the greater reliance on natural gas would begin to slow down the increase in global average temperature, but only by a few tenths of a degree.

"Relying more on natural gas would reduce emissions of carbon dioxide, but it would do little to help solve the climate problem,However, if you buy them after the formal season has ended, it is much easier for you to get a cheap zentai. Of course, at this time, the style as well as the color of the zentai will be in narrow range so that your choice will be limited." says Wigley,Demand for allergy Floor tiles could rise earlier than normal this year. who is also an adjunct professor at the University of Adelaide in Australia. "It would be many decades before it would slow down global warming at all, and even then it would just be making a difference around the edges."

In the category of changes that actually make a difference, eight families on Martha's Vineyard in Massachusetts recently were able to demonstrate how important energy conservation is in reducing our need for carbon.

The families moved into nearly identical, superinsulated homes last June. South Mountain Co. designed and built the LEED Platinum homes for the Island Housing Trust with the goal of allowing the residents to operate them at net-zero energy, using the 5 kW photovoltaic arrays on the roofs for power.100 oil paintings for sale was used to link the lamps together. In case the energy cost savings didn't provide enough incentive, South Mountain offered a reward to any household that came in at net-zero energy for the first year. Two families achieved this goal, and won their choice of a $400-dollar gift certificate at a local fish market or a one-year membership at the local CSA.

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