- #1
roger kryless
- 1
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Imagine that i have a source of _constant_ wind. It travels, with negligible variance, at 50 mph. The problem is that at the accessible point, the source of the wind has an opening of only 1 meter across. (Basically, at this point, imagine a small wind tunnel).
The question is, how much energy can i generate from this source of wind (lets assume that the efficiency of any wind turbine i use is 30%). The standard equations can be used for this, i believe. But beyond this is where i get confused:
(1) imagine that i put a cone on the wind source, to reduce it to 0.5 meters across. Thereby increasing wind speed. How do i calculate the wind velocity change? Is this is a good thing to do / in theory/practice?
- will this increase the density of the air (do i need to factor that in)
- will this increase the temperature?
(2) imagine that the source of the wind was 10 degrees (F) hotter than the surrounding air. Does that help or hurt the performance? How can i use that advantageously? It may wind up that hotter air will hurt performance?
thanks for any advice.
rk
The question is, how much energy can i generate from this source of wind (lets assume that the efficiency of any wind turbine i use is 30%). The standard equations can be used for this, i believe. But beyond this is where i get confused:
(1) imagine that i put a cone on the wind source, to reduce it to 0.5 meters across. Thereby increasing wind speed. How do i calculate the wind velocity change? Is this is a good thing to do / in theory/practice?
- will this increase the density of the air (do i need to factor that in)
- will this increase the temperature?
(2) imagine that the source of the wind was 10 degrees (F) hotter than the surrounding air. Does that help or hurt the performance? How can i use that advantageously? It may wind up that hotter air will hurt performance?
thanks for any advice.
rk