Innovations used for the most consistent energy transfer:
Varying coil angles of the HydroCoil helical turbine -->
to extract and incrementally convert kinetic energy of water inside this micro hydro electric turbine, which sequentially captures linear energy of water transitting the gradual to steeper coils
mathematical plus the practical
design includes key and not-so-obvious physics principles
gravity--or pressure of flow in a pipe/ conduit/ channel-- is the energy source for HydroCoil turbines
potential energy in head or existing elevated storage
kinetic energy in water flow, water treatment, low head dams, cascades, tidal change.
plus a pump? No, just for the demo. Don't need a high pressure or high velocity circuit as with some horizontal, in- pipe, high-head turbines
outer containment cylinder:
to focus energy of pipe outflow/ sluiceway/ irrigation canal/ river/ ocean current
essentially all of the water contacts the turbine coils
internal strength in its torsional dynamism
root torsional bending stress is constantly distributed, which
helps minimize vane thickness & its concave base fillet
advantageous to durability and to cost factor
side vents (optional, for variable flow conditions)
for early water exit from turbine if momentary pressure backup during current changes
this is NOT an Archimedes screw; it outperformed an Archimedes screw early-on
this is NOT a modification of traditional turbines such as Kaplan, crossflow, or Pelton wheel
this does NOT vibrate
CLUSTER of 7 HydroCoil units, like a honeycomb. Turbines READILY CONNECTED SIDE-TO-SIDE. Can expand cluster, or REMOVE SINGLE UNITS for service.
HydroCoil Turbine development: Development, Consultation and Assessment : HydroCoilPower the Company was founded by Dr. Rosefsky, who theorized and pioneered the HydroCoil technology. HydroCoil turbines started right here, and continue to advance with new patents.
We sought advice and assistance from the engineering departments at Drexel, Villanova, and Cooper Union universities, early in development. Ben Franklin Technology Partners awarded a grant.
Working with 3-D Technologies of Avondale, PA ( http://mywebpages.comcast.net/3dtech), the design underwent internal improvements. Definitive demonstrations and certification were conducted April 2-8, 2009. Results were more than 150% of expectations, with efficiency beyond the norm for low head hydro. See short excerpt of demonstration video (p.3).
HydroCoil turbines use patented designs (U.S.A. and abroad), have few moving parts, and incorporate low-cost injection molding.