11 Insane Rooftop Wind Turbine Halves Solar Panel Costs

Insane Rooftop Wind Turbine Halves Solar Panel Costs

This is the arrow mind rooftop wind energy system rated at five kilowatts, scientists have been developing this wind system, which could apparently outperform solar panels. In many applications, reports have been floating around stating that it can generate 50% more electrical energy than solar panels for the same cost. However, Arrow minds own reports show that they can more than half solar panel costs, claiming cost reductions as high as 70%.


These are some bold claims. So in this video, we’ll look in more detail at the scientific papers era mine have published to see if the system is too good to be true. Firstly, let’s look at how the arrow mind wind system actually works as at first glance, it appears to not have any spinning turbines at all. The fact that there are no external moving parts is actually one of the benefits of the arrow mind as it makes it more suited for being mounted on roofs for structural and safety reasons. http://troop1914.org/ha/members/quiltshow2/activity/91744/

However, this doesn’t mean that there are no moving parts to understand the system, it is first useful to look at a single airfoil As air flows past the airfoil it gets redirected and areas of high and low pressure form. Now if we take two air foils, and place them opposite each other, we have something similar to the arrow mind system. With this we have now created a low pressure region between the air foils which is the fundamental principle of how the wind system works. https://gopengit.com/members/namewhip1/activity/292010/


Each of the air foils on the air mine also have holes in them. So as air flows through the low pressure regions between the air foils suck in the surrounding air over a hidden turbine below, meaning this is still somewhat of a wind turbine. This action of drawing in the surrounding air is the same principle as a straw. When the pressure in your mouth decreases. As you begin to suck, the water in your glass begins to flow up the straw. This wind system is a pretty interesting design, but it is not necessarily a new idea. In fact, it reminds me of these ancient air conditioners called Wind catchers that have been used in Iran for the past 3000 years. Similar to the arrow mine. http://www.bcsnerie.com/members/ownerapril2/activity/3300468/

These wind catchers exploit low pressure regions which are caused by the wind to draw air up into the buildings. In this example, an underground aqueduct known as a candidate is also used to cool the air providing the ancient air conditioning. Now with an understanding of how the air in mind works, we can start to look into how valid the reported claims are despite some key drawbacks that I will cover. One benefit is that the air mine isn’t supported by a tower and is based on a modular design. https://adi.com.ng/members/priestnylon5/activity/1229427/

This makes it space efficient and helps to keep costs down. It also reduces the need for steel in the construction, which could be seen as a benefit as steel has historically released significant greenhouse gases when it’s made. In fact, steel production makes up 7% of global co2 emissions, which is why the steel manufacturer SSAB is creating fossil fuel free steel SSAB have found a solution to steel co2 problem. Using their new hybrid technology hybrid replaces coking coal, which is traditionally needed for all based steelmaking. With fossil free electricity and hydrogen. In the new process. Sustainable hydrogen is used instead of carbon to separate iron molecules from oxygen molecules in iron ore, which is a fundamental step of steel production. This new process releases water as a byproduct instead of co2. Like when coking coal is used. https://ohioprobailassociation.org/members/noiseapril1/activity/362217/

This is a huge breakthrough as this step is the biggest cause of co2 emissions in steel production. The water released is also reused by SSAB and other processes. However, they have actually bottled some and named it pure waste. Although pure waste won’t be sold to consumers. It symbolizes the clean byproducts of the hybrid process, the fossil fuel free steel will be available on the market as soon as 2026 and SSAB are committed to largely eliminating the overall co2 emissions by 2030. Clearly, SSAB have learned a lot about drastically reducing the co2 emissions of steel manufacturing, so they are dedicated to sharing knowledge and information about the technology to increase their impact. https://explore-being-human.org/members/writerhour8/activity/116167/

If you want to find out more on this, make sure to follow the link in the description to learn more. Looking back at the arrow mine, we can see that it’s designed for rooftop applications. But as we continue our analysis, we’ll see this is actually one of his biggest flaws. See the test results are actually very impressive. After successfully showing a proof of concept design in 2019. A three meter pilot scale rig was analyzed in 2022 to see how the system performs under different conditions. Something I found interest thing was how the airline system tackles winds from different directions, which is important as it cannot turn to face it like a normal wind turbine. What they found was that the system produced the same amount of power, whether the wind was coming straight on, or up to 45 degrees in either direction, which can be seen in this graph where the power generation quickly drops off. https://dealz123.com/members/epoxybench7/activity/479002/

After that this may sound counterintuitive, but my understanding is that this works due to the Coanda effect. This is the same effect that causes airflow to follow around an aerofoil. As you can imagine that the wind hitting the air mine from different angles is the same as an airfoil, changing its angle of attack. So that is how the air mine deals with different wind directions, but is 45 degrees and that a good thing to look at here is a wind rose. This shows what proportion of the wind at a certain site comes from each direction. If we look at the wind profile from near where I am in the southwest of England, we can see it mostly comes from the southwesterly direction by roughly picking the average wind direction. https://southauroracooperative.org/members/noiseapril2/activity/9224/


And looking at the area of 45 degrees either side, we can see the ever mind would do a pretty good job here. However, if we look at some wind roses from other locations, we can see this isn’t always the case and that a lot of potential wind energy would be lost. Another study from Aaron mine using their pilot system looked at how efficiently they could capture power from the wind. For reference, a standard wind turbine can usually hit a maximum efficiency of 50%. In the right conditions, which is not far off the theoretical limit of 59% known as The bet’s limit, and intuitive feel for the best limit is that if all the energy was extracted from the wind, it would be stationary behind the turbine, and therefore no new wind could flow through. https://edusouq.com/members/writerdrill5/activity/8623/

With this in mind, the ever mind prototype managed to hit 25% efficiency up from 18% in their lab tests although this maximum efficiency is lower than traditional turbines, every mind that says this can be weighed out by the fact the system captures a larger area of wind due to its design. Importantly, the key aspect of the error mine is the comparison of its cost compared to solar panels. Here is a graph that compares the levelized cost of energy for the error mind system and industrial solar panels at different wind speeds. Here the levelized cost can be thought of as the price of captured energy averaged over the system’s lifetime. https://www.retetamea.ro/members/tvgarage6/activity/331484/


This graph shows how in the Midwest where the average wind speed is just below seven meters per second, the energy from the era mine is around 70% cheaper than the upper end of industrial solar. However, this is where things become a little bit less favorable for Arrow mine. The thing is, these average wind speeds come from this map. Specifically, this map shows the average wind speeds at 30 meters elevation, where the wind is faster than at ground level. Although 30 meters is generous for most buildings, it is probably the least of the worries here. http://whistle.themessupport.com/members/bunapril4/activity/943992/

This is because the map also has some important small print, which reads the average wind speeds indicated on this map on model derived estimates that may not represent the true wind resource at any given location. Small terrain features vegetation, buildings and atmospheric effects may cause the wind speed to depart from the maps estimates. This is very important as objects at ground level impact the wind speed a lot. https://financialwellbeingeducation.com/members/namebasin9/activity/9255/


The effect of different terrains and buildings on wind speed is captured in the surface roughness. And if we assume the era mine is used in the villages, small towns or agricultural land with hedges, we can see that the ideal seven meters per second wind speed at 30 meters becomes 4.2 meters per second. With this only getting worse at lower elevations and with more built up areas in terms of cost. https://www.declaacademy.com/members/tvmouth2/activity/79447/

This means even in the windy Midwest, the cost becomes higher than the most expensive solar panels the combination of slow wind speeds on roofs and the lack of economies of scale means these are also more expensive than getting energy from a distant wind farm through the electricity grid. Although this isn’t great news for Arrow mine, http://xpresscience.com/xs/members/lotionshow2/activity/293739/
I should mention I don’t think any of their claims are false, they could technically reduce energy costs by 70% compared to solar panels. However, they may be overly optimistic with where this would happen, but it may be effective in some cases where there is very low surface roughness and I hope they can develop this technology further and find more applications where it can provide benefits.  http://gigglyu.com/members/hatebadge5/activity/526574/

If you want to know more about error mine and ask specific questions. relates to this. I’m now going to be doing a live stream related to every video upload for this video. The live stream will be at 7pm GMT on the 19th of December but if you want to know more about how energy is stored. http://warebuilt.com/members/writerwhip7/activity/418940/

Now, check out this video on using superheated bricks. And don’t forget to like and subscribe.

Our Previous & Other Posts in these series:

  1. https://vanilla.energy/news/2022/12/13/9kw-diy-home-solar-panel-system-installation-start-to-finish/
  2. https://vanilla.energy/news/2022/12/13/how-much-can-solar-panels-save-you-in-the-uk/
  3. https://vanilla.energy/news/2022/12/13/what-if-all-houses-were-covered-with-solar-panels/
  4. https://vanilla.energy/news/2022/12/13/best-solar-generator-for-2023-the-ultimate-guide/
  5. https://vanilla.energy/news/2022/12/13/solar-panels-plus-farming-agrivoltaics-explained/
  6. https://vanilla.energy/news/2022/12/13/what-tesla-solar-wont-tell-you-unless-you-ask/
  7. https://vanilla.energy/news/2022/12/12/bifacial-solar-panels-the-best-solar-panel-real-world-results/
  8. https://vanilla.energy/news/2022/12/12/how-green-is-solar-energy-really/
  9. https://vanilla.energy/news/2022/12/11/insane-rooftop-wind-turbine-halves-solar-panel-costs/
  10. https://vanilla.energy/news/2022/12/08/the-truth-about-solar-panels/






Leave a Reply

Your email address will not be published. Required fields are marked *