Recent content by mattpbarry

  1. M

    Micro-hydro Project: Calculation Help

    I wrote a program to calculate the efficiency of various pipe diameters. For a 100kW system which pipe diameter would you choose? Again I don't know what the rivers total flow is but its about 8m wide, 1m deep and fairly rapid. Diameter: 5" Friction Factor: 0.018 Flow Rate...
  2. M

    Micro-hydro Project: Calculation Help

    Ok so if I use and emax of 60% then I get a max of 76.4kW. What is the Darcy friction factor for an 8" pipe?
  3. M

    Micro-hydro Project: Calculation Help

    And if I plug it into my other formula I get P = ( 260 (l/sec) * 50 * 1 )/102 and therefore I sould have a max generation capacity of 127.45kW
  4. M

    Micro-hydro Project: Calculation Help

    So 50 = 0.015 x 50/0.154051 (inches to m) x v^2/2(9.8) gives me a solution of v = 14.19 m/s and so Q = v x pi x r^2 which is 14.19 x 0.0182 which gives me a flow rate of 0.26 m^3/s. Am I correct?
  5. M

    Micro-hydro Project: Calculation Help

    Hi all, Basically I need help working out how much energy we can potentially produce. We have a waterfall 50m high that has a constant year round flow. We would take off water into a 6" vertical steel pipe at the top and run it to the bottom into a turbine. I don't know the friction of the...
  6. M

    Modifying a Small Engine to Run on Hydrogen - Need Help!

    Seriously? I don't think we have any four stroke engines.
  7. M

    Modifying a Small Engine to Run on Hydrogen - Need Help!

    I'm 16. This is definitely a challenging endeavor. My father is a farmer with some mechanical background and we are going to be speaking to a friend of his who is a mechanical engineer. As far as budget goes the engine will come from an old brush cutter of ours so the major cost is taken out. We...
  8. M

    Modifying a Small Engine to Run on Hydrogen - Need Help!

    For an upcomming science expo my friend and I are attempting to modify a small engine (such as found in a brush cutter) to run of hydrogen. We do however have a number of concerns and was wondering if anyone would be able to help. Firstly should we run it off tanked hydrogen and air or should...
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