Mission Statement Project Introduction Hydroelectric Basics The basic principle of hydropower is that if water can be conveyed from one elevation to a lower elevation, the resulting water pressure can be used to do work. If the water pressure is allowed to move a mechanical component then that movement involves the conversion of the potential energy of the water into mechanical energy. Hydroelectric turbines convert the water pressure into mechanical shaft power which is then converted into electricity by a generator. Designed responsibly, hydroelectricity is a clean, environmentally friendly, and renewable source of electricity. It is also one of the most cost effective sources. Design a hydroelectric system that will provide power for the homes and school house in the community of El Dulce in Jarabacoa, Dominican Republic Site Location and Feasibility Study Concept Screening and Scoring Variable Matrix + 4" 6" 8" PVC 3 6 9 Concrete 1 4 7 Iron 2 5 8 The test variables A-I can be changed within the program to yield different results. Velocity Function Turbine-Generator Unit Penstock 4” Diameter PVC Pipe Wall Roughness Factor. 000005 ft Approximately 1800 ft Turbine Type – Pelton Synchronous Generator Number of Nozzles = Four Jet diameter [mm] = 20 Pitch circle diameter [mm] = 250 Efficiency turbine = 85% Efficiency generator = 85% Moody Concept Generation Function State of the Art Review Preliminary Design Selection Inputs System Design Process Determine Power Needed and System Target Values System Simulation Output Graphs Pipe Type vs. Efficiency Technical Analysis Assessment Trip and Design Revision Final Design Intake System • Stepped Channel: Conveys the water source to the stilling basin. A supercritical-flow contraction and the downward steps serve as energy dissipaters. • Settling Basin: Allows larger debris such as stones and leaves to settle to the bottom of the basin. • Self Cleaning Filter: The filter is set at an angle that allows it to capture a certain percentage of the water flowing over it. Tailrace Technical Analysis Pipe Type vs. Cost • Design Flow Rate: 1. 0 cfs • Channel Length: 200’ • Channel Slope: 1% • Channel Side Slope: 2: 1 • Mean Stone Size = 1. 0” • Riprap Lined Channel • Shear Stress Analysis • Standards for Soil Erosion and Sediment Control Laboratory Model The model hydroelectric system was designed for use by future Stevens students. The students will run the system in a lab exercise to understand the principles and characteristics of hydroelectric power as well as to analyze the characteristics of the systems such as head, flow rate, head losses, and efficiency. System Location El Dulce, Jarabacoa, Dominican Republic SENIOR DESIGN TEAM: Greg Maietta (Civil Engineering) Nick Strand (Mechanical Engineering) David Velasco (Mechanical Engineering) Katie Weatherall (Business and Technology) Chloe Weck (Mechanical Engineering) ADVISORS: Professors Frank Fisher, Siva Thangam, Leslie Brunell FM FM PM Hiking to Intake Location Project Team Poses With Community Members at the Intake Location View of El Dulce From Intake Location Community Members Demonstrate Existing Light Sources The community of El Dulce lies deep within the rural mountains of Jarabacoa in the Dominican Republic. The locals are for the most part farmers living off the land selling what they can. The community members can not pay enough for power to make connecting them to the grid profitable for the government or private companies, and so they have never had any source of electricity available to them, until now. Special Thanks to… Investigating Existing System Design Obra Social Salesiana and the Community of El Dulce Alberto Sanchez of the PPS Stevens Mechanical and Civil Engineering Departments And all of the Stevens faculty who have helped make this project a reality.
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