As promised this is the power curve chart for my floating water turbine. It shows the potential power that should be capable from the turbine with 3 different size fins attached at 66% efficiency .I asked kickstarter.com if I could join them but they don't cover Ireland so I may try and find an investor or partner to help produce these. I think if you want more power than these' 2 or more can be joined together or spaced behind each along the river, The same app if fitted on a weir or water fall.As these trials are taking place in a river not in a tank in a lab .over the last 3 weeks the river has increased in dept by about 2 meters,6 feet and the device has taking it rising and lowering with the flow It is recommended a min dept of 12 inch's is required ,as below that the amount of power produced would not justify the cost but will work with as little as 4 inch's Hope ye find this interesting and leave a comment
BTTF Water Technology: In-stream water turbines. (Mircogeneration, hydro) - Water pump, no electricity. - Generating 20 kWh /day.
Thursday, 27 February 2014
Wednesday, 19 February 2014
in stream floating micro hydro turbine
Hi just to let ye know am still doing trials on my floating turbine it s in 12 inch's of water flowing at about 3 ft a sec and there is 3 fins in the water at a time. It works great but when I increase the power it starts to jump the cogs .Will have to find a way of attaching a tension cog to it [any suggestions would be appreciated ] once i get over this problem I will be able to let ye know the power i can get
Thursday, 13 February 2014
How to calculate power from a floating water turbine
I calculate the power you can get from a floating water turbine ,first you need to know the flow rate.This is done by marking off a section of the river for this trial we make off 30 ft on the river bank.
Now throw a floating object about 6 ft in front of this and with a stop watch see how long it takes to trail the 30 ft you might need to repeat this several times to get it right .So if it takes 6 seconds to travail the 30 ft we know the flow is 5 ft a second .
I decided that the size of my fins is 1.5 ft in height and 3 ft in length .
Now to work out the power multiply the height by the length by the flow rate by the fall which =to the depth of the fin . this works whether you have 1 ft or 50 ft of water as its the flow speed makes the power not the dept of water
so 1.5 x 3 x 5 x 1.5 = 33.75 now divide this by 11.8 =2.86 kw this 100% if the machine is working at 75%
multiply 2.86 by .75= 2.14 kw this is the power you can get
I'v looked at some sites and they clam to be getting x power from there turbines when it defy s all calculations ,but then may be their calculations are daily not hour rates
The old saying paper wont refuse ink ?
Now throw a floating object about 6 ft in front of this and with a stop watch see how long it takes to trail the 30 ft you might need to repeat this several times to get it right .So if it takes 6 seconds to travail the 30 ft we know the flow is 5 ft a second .
I decided that the size of my fins is 1.5 ft in height and 3 ft in length .
Now to work out the power multiply the height by the length by the flow rate by the fall which =to the depth of the fin . this works whether you have 1 ft or 50 ft of water as its the flow speed makes the power not the dept of water
so 1.5 x 3 x 5 x 1.5 = 33.75 now divide this by 11.8 =2.86 kw this 100% if the machine is working at 75%
multiply 2.86 by .75= 2.14 kw this is the power you can get
I'v looked at some sites and they clam to be getting x power from there turbines when it defy s all calculations ,but then may be their calculations are daily not hour rates
The old saying paper wont refuse ink ?
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