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GREEN ![]() AND CLEAN POWER French River Land Company's Website!
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French
River Land Company's Home Page!
HYDROELECTRIC SITES: Anasagunticook Lake Dam Replacement- C.Fay & W.Fay Senor Bonifettis' sites in Chile Turners Falls Generator Rewind USEFUL ENGINEERING: Air Admission to Hydro Runners The Banki Water Turbine Mockmoore and Merryfield Bishops Method- STABGM Program Blade Pitting- Boving LTD 1930 Cavitation- Accelerated Research, Allis Chalmers Research Cavitation & Vibration of a Draft Tube Cavitation- Prevention & Reduction, Allis Chalmers Research Causes & Effects of Cavitation in Hydraulic Turbines Chain Turbine by: Nguyen Minh Duy Chain Turbine Mechanics- Discussions with Duy Characteristics of Modern Hydraulic Turbines-Chester Larner Comparative Tests On Experimental Draft Tubes- C M Allen & I A Winter 1923 Design of an Overshot Waterwheel (by Carl Weidner) Design of Small Water Turbines for Farm and Small Communities Design of the runner of a Kaplan turbine for small hydroelectric power plants: Timo Flaspöhler Draft Tubes of Hydro-Electric Stations by M. F. Gubin Ejection into Tailraces of Hydropower Plants: S. M. Slisskii Fall Increaser Herschel Venturi Tube Fall Increaser Moody Ejector Turbine Fall Increaser Hydraulic Jump Apron Feasibility Studies for Small Scale Hydropower Additions, A Guide Manual, US Army CORPS of Engineers Governor Theory for the Plant Operator Graphics of Water Wheels- William Fox Hydraulic Motors- M. Bresse & F. A. Mahan 1869 Hydraulic Turbines- Robert Long Daugherty Hydraulic Turbines by Arnold Pfau Hydraulic Turbines Gelpke & Van Cleve Hydrokinetic Energy in Massachusetts- William D. B. Fay Impulse Turbines by Ely Hutchinson Kaplan Blade Design NACA Air Foil- Report No. 460 Kaplan Blade Design NACA Air Foil- Report No. 628 Kaplan Design Marko Kogovsek.xls A Laboratory Study to Improve the Efficiency of Crossflow Turbines- N. Aziz & V. Desai Meggering Earth Resistance Motors as Generators for Microhydro, Nigel Smith Operation & Maintenance of Hydro-Generators Out Gassing of Cross Flow Turbines Parallel Operation of Turbines Analysis Powerhouse Design- Miniwatt Hydro Rack Design-Chicopee-Olav Hotvedt Rack Design- Hydraulic Institue of Munich Rack Design-Flow Induced Vibrations Selecting Hydraulic Reaction Turbines BUREC Snows Improved Water Wheel Governor Standard for Hydraulic Turbine and Generator Shaft Couplings and Shaft Runout Tolerances Stoplog Structure Design Calculation Stress Analysis of Hydraulic Turbine Parts, BUREC- F.O. Ruud Some Fluid Flow Characteristics of a Cross Flow Type Hydraulic Turbine- Durgin & Fay Tenth Census of the US, 1880, Water Power of the US, Part I- Professor Trowbridge Tenth Census of the US, 1880, Water Power of the US, Part II- Professor Trowbridge Tests on a Kaplan Hydraulic Turbine Theoretical Conditions Related to an Open Channel Flow Linear Turbine- Ishida & Service Theory of Turbines- De Volson Wood Treatise relative to the Testing of Water-Wheels and Machinery, James Emerson 1879 Turbine Water-Wheel Tests- Robert Horton Turgo, A High Speed Impulse Turbine- Paul Wilson Water Hammer-Lorenzo Allievi-Text Water Hammer-Lorenzo Allievi-Figures Water Hammer-ASME Symposium 1933 Waterpower Engineering-Daniel Webster Mead TRADE CATALOUGES: Bradway Turbine (progressive gate) Christiana Machine (register gate) Electric Machinery Company (EM) Head Gate Hoists- S. Morgan Smith J & W Jolly (cylinder gate) Lombard Direct-Connected Oil Pressure Governors Bulletin N0. 113 October 1st, 1912 Lombard Governor Company Type T Instruction Book Lombard Governors for Waterwheels and Steam Engines-1902 Lombard Water Wheel Governors Catalouge 26 Ridgway Perfection Water-Wheel Vertical Shaft Water Wheel Driven Generators- General Electric Westinghouse Small Vertical Waterwheel-Driven A-C Generators, July 1944
Links: Smith Alternative Energy (www.smithtest.com)
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TANNERY POND PAGE The facility is licensed by the Federal Energy Regulatory Commission. It is known as Tannery Pond Hydro, FERC L.P. No. 8895-MA . The project is located on the Millers River in Winchendon, Massachusetts. It consists of an existing 248 foot long by 10 foot high, concrete capped, masonry gravity dam founded on ledge. The crest of the spillway is at 936.95 NGVD. The left, southerly abutment consists of a concrete, monolith pinned to the ledge. A series of cast iron brackets spaced at 6 foot intervals supports 30 inches of flashboards and an access catwalk. The top of the flashboards is at 939.45 NGVD. The right, northerly abutment contains a 10 foot wide by 8 foot tall flood gate. The gate is operated vertically by a back geared Rodney Hunt gate stand. The dam impounds Tannery Pond which has a surface area of 9 acres with a storage capacity of 47 acre-feet and a normal surface water elevation of 939.45 feet NGVD. A reinforced concrete, 34 foot long by 16 foot wide powerhouse is located adjacent to the northerly dam abutment. A short forebay with a stoplog structure and trash racks leads into the waterbox. The waterbox contains two hydraulic turbines, which discharge vertically beneath the powerhouse. A 25 foot wide by 425 foot long tailrace conveys the water back to the Millers River. The powerhouse is interconnected to the 13,800 volt, Massachusetts Electric Company's distribution line on River Road. A short, 125 foot long, transmission line runs from the road to a wooden pole adjacent to the power house. An air break switch on top of the pole controls the flow of power from the arial line to a 6 inch conduit which is attached to the pole and is buried beneath the parking lot. The conduit then runs to a 13,800 to 480 volt station transformer. The powerhouse contains two turbine/generator units with a total installed capacity of 189 kilowatts. A) Unit Number One: Rodney Hunt Francis turbine. It is a model Type 80, Hi Test unit with airfoil adjustable wicket gates, at 14 feet it produces 142 horsepower, Rodney Hunt Francis turbine It is a model Type 80, Hi Test unit with airfoil adjustable wicket gates, at 14 feet it produces 142 horsepower, rotates at 184 rpm, has a hydraulic capacity of 105 cfs and will make approximately 97 kilowatts at the generator leads. B) Turbine Two- Leroy Somers Tube turbine It is a model Hi H automatically adjustable semi Kaplan which at 14 feet net head produces a maximum output of 96 kilowatts while consuming 122 cfs and can regulate down to a minimum of 31.5 kilowatts while consuming 49.4 cfs. The station hydraulic capacity would be 227 cfs which occurs approximately 15 % of the time. The lead machine would be the Semi Kaplan which would operate between 49.4 cfs which occurs approximately 60 % of the time and 122 cfs which occurs 22 % of the time. The lag machine would be the Francis machine which would operate up to the combined hydraulic capacity of 227 cfs at 15 % of the time. This plant is currently interconnected with the Massachusetts Electric Company. An interconnection study was conducted by Mas. Electric and the metering and telephone poles were installed and paid for by French River Land Company. The metering and protective relays have been calibrated every year since the date of installation. Tannery Pond Hydro was re-activated in the spring of 2004. The basic equipment was installed in 1998 but the site was never completed for commercial operation. Celeste, Will, Warren and Bill Fay aligned the generator and gearbox, installed a tachometer controlled relay, a disc brake on the high speed generator shaft, debugged the control system and commenced operations in late May of 2004, just in time to miss the Spring runoff. Bill Munch designed the original control package and did much of the work of de-bugging it.
Will Fay inspecting the new disc brake on Unit One. Note Woodward governor and pump in background.
Close up of the new disc brake
Installation of 22,500 volt air break switch.
Bad picture of welding on top of 40 foot pole.
Overview of Unit One. Note protective relays, Minco temperature relay and tachometer relay in left cabinet. Large fan was used to cool the gearbox during the summer months.
Unit Two ready to be lowered through its cylinder gate down onto its seat. |
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