There is a good, short article posted on-line recently in the Christian Science Monitor entitled, “Arizona’s Solar Aspirations In Peril”. The article suggests that large-scale solar power plants are still far from being competitive with conventional fossil-fired plants, even in a place that sees 325 days of sunshine per year. According to the article, expiration of the federal Investment Tax Credit in 2008 is going to sink a 1 billion dollar solar project slated to elevate Arizona’s prominence as renewable energy hub.
The choice between helical and spur gears in gearboxes may seem straightforward. But with planetary gearboxes, however, the choice between helical and spur gears requires some additional thought. Here’s what you need to know to make the right choice.
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