One of the most common question arises about wind farms -did they generate large amount of heat and cause global warming.but according to new studies ,there is a new theory outcome ,which changes the misconception about wind mills.(even though there is the existence of) what you may have read, wind farms are not causing the planet to heat up. The current claims that they do stem from an of a scientific study, which does not show anything of the kind.
The study in question was managed and did/done by Lee Miller and David Keith at Harvard University. The pair tested out (in a way that was close to the real thing) what would happen if the US‘s whole electricity demand was supplied only by wind turbines. This is not a reasonable picture/situation, because the electricity grid is easier to run if it has a mix of sources rather than just one, but let‘s set that aside: it‘s a “what if” question, designed only to examine how the turbines affect the surrounding (surrounding conditions).
Miller and Keith guess (of a number) that this many wind turbines would heat up the surface area over the continental US by 0.24Â°C. The study was published in the journal Joule.
At the first look, 0.24Â°C seems like quite a lot – especially when you think about/believe that we are being told that we must do everything possible to limit worldwide warming to 2Â°C or even 1.5Â°C. But that is where the (incorrectly reading/incorrectly understanding)s come in.
For starters, that warming is only happening over the US – a rather small fraction of the Earth‘s surface. It would take much more energy to warm the whole planet‘s surface by 0.24Â°C.
But that is almost beside the point, because the wind turbines are not creating extra heat. Instead, they are moving the existing heat around. (usually/ in a common and regular way), the air just above the ground cools at night, but the rotating turbine blades draw down warmer air from higher up. So things get warmer just under the turbines at night while they‘re on, but they also get cooler in other places. The planet as a whole does not warm at all.
This is very different to what pollution (that heats up the Earth) are doing. They trap heat from the Sun, which would otherwise escape into space, so the whole planet warms up.
By using wind turbines instead of (coal, natural gas, oil, etc.) like coal, we avoid this long-term warming effect. Miller and Keith make it clear in their paper that this winning hands (of cards) the localized, (only lasting for a short time) warming they describe.
At this point, you might ask what is the point of the study. In fact it has useful things to tell us, but they are difficult to notice/skillful points.
The first is that we will need a mix of zero-carbon energies if we‘re to keep our (community of people/all good people in the world) running and avoid dangerous climate change. Putting all our eggs in one basket will lead to the sort of not wanted results that Miller and Keith found. That means solar, tidal, wave, bio energy, nuclear, wind, (related to the heat deep in the Earth) and anything else we can think of.
we will need to be smart about which energy sources to place where, and how to send out and use them. If an area is home to threatened wildlife that are sensitive to harden (chemically)nature changes, building a wind farm might be a bad idea because of the localized warming they cause – or maybe the farm could be redesigned to reduce the effect. (in almost the same way), there is much research on how to space out the turbines on a wind farm so they don‘t interfere, securing/making sure of that the farm as a whole takes by force/takes control of more energy.
Finally, while climate change is happening at the (related to being big enough to reach or serve the whole world), the results will be local. All the talk of (in small steps up) changes in temperature can make it seem rather abstract and remote. But the real hits/effects are things like floods, storms, higher food prices and (existing all over a large area) droughts – and that‘s all (in an upsetting and surprising way) real.