Sentences with phrase «because large turbines»

The NHMRC report references very little recent primary research into human and animal health published in respectable science journals; the research must be recent because large turbines (> 1MW) have only been in common use since the early years of this century.

Not exact matches

Geared turbines are extremely effective today, but they will incur higher costs as they are scaled up to larger wind platforms because of additional weight and maintenance needs, Longtin said.

Until the 1930s, hydroelectric - power plants equipped with water - turbine generating units produced the largest percentage of electric energy because they were less expensive to operate than thermal - power plants using steam - turbine units.

Parliament rushed to approve the establishment of Østerild, because the industry told them it was vital that they could have seven large wind turbines standing in a row.

Because one of the largest expenses invested in a wind project are the turbines, one of the ways to meet the 5 percent requirement is to purchase wind turbines before the end of the current calendar year.

Offshore wind facilities, which are currently not in operation in the United States but may become more common, require larger amounts of space because the turbines and blades are bigger than their land - based counterparts.

Because the amount of electrical energy produced by a wind turbine varies nonlinearly with wind speed, small changes in wind speed can result in much larger changes in output.

And because they are now 100 meters tall, instead of less than 40 meters, they harvest a far larger, stronger, and more reliable wind regime, generating 20 times as much electricity as the turbines installed in the early 1980s when modern wind power development began.

On January 9, 2009, the New York Supreme Court annulled a town law regulating large wind turbines because the town board did not take a «hard look» at relevant areas of environmental concern, and it disregarded study committee recommendations for setbacks and noise standards to protect the health and well - being of residents.

Making wind turbines larger is getting difficult, in part because they've have grown so large that the wind conditions at the highest point of the blades» sweep can be very different than those at the bottom.

Conventional offshore wind turbines are expensive and complicated pieces of machinery — in a large part because of their complex and maintenance - intensive gearboxes.

The authors simply dismissed actual reported field CFs as irrelevant and not valid because they allegedly apply only to short, «low - power turbines with small diameters in slow - wind areas [less than 7 to 7.5 m / s annual winds]...» The authors, however, fail to explain why the higher power windmills with large diameter blades were not available before, if indeed this combination is wind energyís economic panacea.