Design a hydroelectric system that will provide power for Design a hydroelectric system that will provide power for the homes and school house in the community of El Dulce the homes and school house in the community of El Dulce

in Jarabacoa, Dominican Republicin Jarabacoa, Dominican Republic

Hydroelectric BasicsHydroelectric Basics

Determine Power Determine Power Needed and System Needed and System

Target ValuesTarget Values

Site Location and Site Location and Feasibility StudyFeasibility Study

State of the Art State of the Art ReviewReview

Concept GenerationConcept Generation

Assessment Trip and Assessment Trip and Design RevisionDesign Revision

Concept Screening Concept Screening and Scoringand Scoring

Preliminary Design Preliminary Design SelectionSelection

Technical AnalysisTechnical Analysis Final Design Final Design

Technical AnalysisTechnical Analysis

Project Project IntroductionIntroduction

Special Thanks to…Special Thanks to…Obra Social Salesiana and the Community of El DulceObra Social Salesiana and the Community of El DulceAlberto Sanchez of the PPSAlberto Sanchez of the PPSStevens Mechanical and Civil Engineering DepartmentsStevens Mechanical and Civil Engineering DepartmentsAnd all of the Stevens faculty who have helped make this project And all of the Stevens faculty who have helped make this project

a reality.a reality.

Design ProcessDesign Process

System System SimulationSimulation

Laboratory Laboratory ModelModel

PenstockPenstock• 4” Diameter4” Diameter• PVC PipePVC Pipe• Wall Roughness Factor .000005 ftWall Roughness Factor .000005 ft• Approximately 1800 ft Approximately 1800 ft

Turbine-Generator UnitTurbine-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

TailraceTailrace•Riprap Lined ChannelRiprap Lined Channel

•Shear Stress AnalysisShear Stress Analysis

•Standards for Soil Erosion Standards for Soil Erosion and Sediment Controland 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 Location

Investigating Existing System Design

The basic principle of hydropower is that if water can be The basic principle of hydropower is that if water can be conveyed from one elevation to a lower elevation, the conveyed from one elevation to a lower elevation, the

resulting water pressure can be used to do work. If the resulting water pressure can be used to do work. If the water pressure is allowed to move a mechanical water pressure is allowed to move a mechanical

component then that movement involves the conversion component then that movement involves the conversion of the potential energy of the water into mechanical of the potential energy of the water into mechanical

energy. Hydroelectric turbines convert the water energy. Hydroelectric turbines convert the water pressure into mechanical shaft power which is then pressure into mechanical shaft power which is then converted into electricity by a generator. Designed converted into electricity by a generator. Designed

responsibly, hydroelectricity is a clean, environmentally responsibly, hydroelectricity is a clean, environmentally friendly, and renewable source of electricity. It is also friendly, and renewable source of electricity. It is also

one of the most cost effective sources. one of the most cost effective sources.

The community of El Dulce lies deep within the rural mountains of Jarabacoa 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 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 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 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 government or private companies, and so they have never had any source of electricity available to them, until now.electricity available to them, until now.

PM

FM

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.

InputsInputs

Velocity FunctionVelocity Function

Variable MatrixVariable Matrix

852Iron

741Concrete

963PVC

8"6"4" 

The test variables A-I can be changed within The test variables A-I can be changed within the program to yield different results.the program to yield different results.

+

MoodyMoody FunctionFunction

Pipe Type vs. Efficiency Pipe Type vs. Cost

Output GraphsOutput Graphs

El Dulce, Jarabacoa, Dominican RepublicEl Dulce, Jarabacoa, Dominican Republic

System DesignSystem Design

Mission StatementMission Statement

SENIOR DESIGN TEAM:SENIOR DESIGN TEAM:Greg Maietta Greg Maietta (Civil Engineering)(Civil Engineering)

Nick Strand Nick Strand (Mechanical Engineering)(Mechanical Engineering)

David Velasco David Velasco (Mechanical Engineering)(Mechanical Engineering)

Katie Weatherall Katie Weatherall (Business and Technology) (Business and Technology)

Chloe Weck Chloe Weck (Mechanical Engineering)(Mechanical Engineering)

ADVISORS: ADVISORS: Professors Frank Fisher, Siva Thangam, Leslie BrunellProfessors Frank Fisher, Siva Thangam, Leslie Brunell

Intake SystemIntake System•Stepped Channel:Stepped Channel: Conveys the water source to the stilling Conveys the water source to the stilling basin. A supercritical-flow contraction and the downward steps basin. A supercritical-flow contraction and the downward steps serve as energy dissipaters.serve as energy dissipaters.•Settling Basin:Settling Basin: Allows larger debris such as stones and leaves Allows larger debris such as stones and leaves to settle to the bottom of the basin. to settle to the bottom of the basin. •Self Cleaning Filter:Self Cleaning Filter: The filter is set at an angle that allows it The filter is set at an angle that allows it to capture a certain percentage of the water flowing over it. to capture a certain percentage of the water flowing over it.

System LocationSystem Location