Gareth Lewis wrote:Hi, im new to this forum and was wandering if anyone could help me with my school project ?
I have been given a task to find out the best way to generate electricity with hydro electricity
Pelton wheel, Archimedes screw or turbine ?
We have been given a value of 16gallons per minuit in flow and a drop of 10m(straight down or gradually)
Can anyone help
Gareth Lewis wrote:Hi and thank you both for the help, the calculations help a lot, but im not sure if that is 86.9 watts per minute does that mean I can times that by 60 to get the watts per hour or in this case Kw/h ??
Gareth Lewis wrote:Ok so our task here is to find out how much electricity can be generated over a day with 16gpm/1.12lps with a 10m head, a crude version for me would be a big tank/lake with a vertical pipe dropping the water by 10m onto the pelton(or whatever is best) wheel through a nozzle.
Im taking for granted that the 10m head pipe would have to be a certain size to accomodate 1.12lps, and could I start with a slightly bigger pipe and reduce the pipes diameter maybe on 5m to create more pressure ?
Gareth Lewis wrote:So in conclusion, if I have a constant flow of 16 gpm or 1.12 litres per second for a whole hour or even longer I will only produce 89.6watts?
...But surely this is still 89.6 watts per second and not per hour....im not sure if that is 86.9 watts per minute does that mean I can times that by 60 to get the watts per hour or in this case Kw/h ?
Gareth Lewis wrote:Thank you Morcos, I understand your horsey theory, where as I dont understand how, when you calculate something in seconds (89.6) or minutes it does not multiply by the said number to achieve Kwh
Gareth Lewis wrote:I understand that although I dont understand how Mr McKinlay can work out the ecuation in litres per seconds and get a figure in Watts (per second) and it does not multiply to per minute/hour although I do realise it would be very high in Kwh on that ecuation
Is there a better system, more efficient that would work with this amount of flow or head ?
Gareth Lewis wrote:So on another note, if I wanted to generate 5kw/h of AC current with 10 or 20m head, is there an equation to calculate how many litres/gallons per minute I need
Gareth Lewis wrote:So on another note, if I wanted to generate 5kw/h of AC current with 10 or 20m head, is there an equation to calculate how many litres/gallons per minute I need