1. Design a hydroelectric system that will provide power for the homes and school house in the community of El Dulce in Jarabacoa, Dominican Republic Hydroelectric Basics Determine Power Needed and System Target Values Site Location and Feasibility Study State of the Art Review Concept Generation Assessment Trip and Design Revision Concept Screening and Scoring Preliminary Design Selection Technical Analysis Final Design Technical Analysis Project Introduction Special Thanks to… 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. Design Process System Simulation Laboratory Model Penstock 4” Diameter 4” Diameter PVC Pipe PVC Pipe Wall Roughness Factor.000005 ft Wall Roughness Factor.000005 ft Approximately 1800 ft Approximately 1800 ft Turbine-Generator Unit Synchronous Generator Number of Nozzles = Four Turbine Type – Pelton Efficiency generator = 85% Efficiency turbine = 85% Pitch circle diameter [mm] = 250 Jet diameter [mm] = 20 Tailrace Riprap Lined ChannelRiprap Lined Channel Shear Stress AnalysisShear Stress Analysis Standards for Soil Erosion and Sediment ControlStandards for Soil Erosion and Sediment Control Design Flow Rate: 1.0cfsDesign Flow Rate: 1.0cfs Channel Length: 200’Channel Length: 200’ Channel Slope: 1%Channel Slope: 1% Channel Side Slope: 2:1Channel Side Slope: 2:1 Mean Stone Size = 1.0”Mean Stone Size = 1.0” View of El Dulce From Intake Location Community Members Demonstrate Existing Light Sources Project Team Poses With Community Members at the Intake Location Hiking to Intake LocationInvestigating Existing System Design 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. 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 and 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. PM FM 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. Inputs Velocity Function Variable Matrix 852Iron 741Concrete 963PVC 8"6"4" The test variables A-I can be changed within the program to yield different results. + MoodyFunction Pipe Type vs. EfficiencyPipe Type vs. Cost Output Graphs El Dulce, Jarabacoa, Dominican Republic System Design Mission Statement 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 Intake System Stepped Channel: Conveys the water source to the stilling basin. A supercritical-flow contraction and the downward steps serve as energy dissipaters.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.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.Self Cleaning Filter: The filter is set at an angle that allows it to capture a certain percentage of the water flowing over it. System Location