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Marquette UniversityMarquette University&&

Northern Illinois UniversityNorthern Illinois University

Santa Cruz del Quiche, GuatemalaSanta Cruz del Quiche, GuatemalaSolar Powered Water Pumping SystemSolar Powered Water Pumping System

MARQU-S-Guat-00306MARQU-S-Guat-00306 Phase 1 – Projected Travel January 2008Phase 1 – Projected Travel January 2008

Casa Nueva VidaCasa Nueva VidaCasa Nueva Vida is a residential Casa Nueva Vida is a residential facility for the treatment of facility for the treatment of alcoholism and drug dependency alcoholism and drug dependency located just outside of Santa Cruz located just outside of Santa Cruz del Quiche, Guatemala. del Quiche, Guatemala.

Each year 18 in-patients, 18 out-Each year 18 in-patients, 18 out-patients, approximately 90 family patients, approximately 90 family members, and 40-50 participants members, and 40-50 participants in an ambulatory recovery program in an ambulatory recovery program benefit from the services and benefit from the services and support of Casa Nueva Vida. support of Casa Nueva Vida.

Currently, water is supplied to the Currently, water is supplied to the center from a hand-dug well, which center from a hand-dug well, which leads to concerns about reliability leads to concerns about reliability and cleanliness. and cleanliness.

Goals for the Solar Water SystemGoals for the Solar Water System

The main goal of the project is to create a more reliable and cost-The main goal of the project is to create a more reliable and cost-effective water system for Casa Nueva Vida. effective water system for Casa Nueva Vida.

Electricity in the area is unreliable and expensive creating water Electricity in the area is unreliable and expensive creating water problems on site. Plus, the current water supply comes from a hand problems on site. Plus, the current water supply comes from a hand dug well which leads to certain health concerns.dug well which leads to certain health concerns.

EWB-Marquette along with EWB-NIU will work to place two DC EWB-Marquette along with EWB-NIU will work to place two DC pumps in parallel with the existing system: one down in the well and pumps in parallel with the existing system: one down in the well and one much smaller pump above ground to provide water pressure one much smaller pump above ground to provide water pressure throughout the site. Each pump will have its own DC power source throughout the site. Each pump will have its own DC power source in the form of mounted solar panels. in the form of mounted solar panels.

SystemSystem

Water is…Water is… Pumped from well using submersible pumpPumped from well using submersible pump Collected in large underground tankCollected in large underground tank Pumped with an above ground pump from Pumped with an above ground pump from

underground tank to distribution tank on roofunderground tank to distribution tank on roof

2 subsystems of PV arrays/pumps:2 subsystems of PV arrays/pumps: At wellAt well At upper holding tankAt upper holding tank

Will be installed in parallel with existing electrical Will be installed in parallel with existing electrical system (to provide backup system)system (to provide backup system)

Solar PanelsSolar Panels150SX BP Solar 150SX BP Solar photovoltaic photovoltaic panelspanels

2 panels at upper 2 panels at upper tanktank

6 panels at well6 panels at well

Team has used Team has used same model on same model on past projects in past projects in GuatemalaGuatemala

Well Pump SystemWell Pump System

The Well PumpThe Well PumpPump Model: Pump Model: Grundfos 11 SQF-2Grundfos 11 SQF-2Pump Type: Pump Type: AC submersibleAC submersibleSpecs:Specs:

Helical rotorHelical rotor Can provide 5gpm drawing 475WCan provide 5gpm drawing 475W

Additional:Additional: Grundfos pumps are sold in Guatemala Grundfos pumps are sold in Guatemala

(easy access to replacement parts if (easy access to replacement parts if needed)needed)

Durable submersible pumps, used in many Durable submersible pumps, used in many applications in Guatemalaapplications in Guatemala

Well Mounting System

Materials: Structural Aluminum Bar, 1040 Steel Brackets, SAE Grade 8 Bolts

Expected Cost: $ 320.12 (USD) per system (McMaster-Carr)

Maximum Stress: 170.60 MPa

Design Overview: Analyzed for 110mph winds parallel to the ground, two of these mounting systems will hold 3 panels each to power the in well DC submersible pump. The panels are designed to sit .75 meters above the ground. An adjustable length rear pole varies the angle of the face of the panels from 15 degrees from the horizon to 30 degrees. All bolting and brackets will be fabricated and purchased in the US, while all poles will be purchased in Guatemala.

Concrete Design – Well PanelsConcrete Design – Well PanelsUsing a soft clay with c=12kPa, Using a soft clay with c=12kPa, diameter=0.5m and depth=.8m is diameter=0.5m and depth=.8m is sufficient to provide 23.5kN of sufficient to provide 23.5kN of resistance; more than 3 times the resistance; more than 3 times the largest load of 4848Nlargest load of 4848N

If soil is a very weak sand then an If soil is a very weak sand then an increased depth of 1.5m required to increased depth of 1.5m required to get ultimate strength of 15kN - 3 get ultimate strength of 15kN - 3 times the largest load of 4848times the largest load of 4848

The well solar panel mounting The well solar panel mounting system has significantly smaller system has significantly smaller forces & Foundation depth will forces & Foundation depth will follow calculations done to follow calculations done to determine size of tank system determine size of tank system foundation but should have a foundation but should have a Q_u=5kN which is based on a factor Q_u=5kN which is based on a factor of safety of 3.0 whereby it should be of safety of 3.0 whereby it should be designed for 5kNdesigned for 5kN

Well Solar Panel Mounting Well Solar Panel Mounting System ForcesSystem Forces

Upper Tank Pump SystemUpper Tank Pump System

The Ground PumpThe Ground Pump

Pump Model: Pump Model: Conergy Solar Force Conergy Solar Force 3020-24PV3020-24PVPump Type: Pump Type: AC piston pumpAC piston pumpSpecs:Specs:

24 V AC24 V AC Suction capacity = 25 vertical feetSuction capacity = 25 vertical feet Can provide 5gpm drawing 202 WCan provide 5gpm drawing 202 W

Additional:Additional: Team has used in previous pumping Team has used in previous pumping

projects in Guatemalaprojects in Guatemala Easy to maintainEasy to maintain Replacement parts can be fashioned Replacement parts can be fashioned

(car timing belt instead of normal (car timing belt instead of normal belt,leather gaskets, etc)belt,leather gaskets, etc)

Durable, rugged designDurable, rugged design

Storage Tank Mounting System

Materials: Structural Aluminum Bar, 1040 Steel Brackets, SAE Grade 8 BoltsExpected Cost: $ 386.06 (USD) per system (McMaster-Carr)Maximum Stress: 77.20 MPa

Design Overview: Analyzed for 110mph winds parallel to the surface of the panels, a single mounting systems will hold 2 panels 2 meters above the ground, to power the storage tank pump. An adjustable central bracket varies the angle of the face of the panels from 15 degrees from the horizon to 30 degrees. All bolting and brackets will be fabricated and purchased in the US, while all poles will be purchased in Guatemala.

Concrete Design – Upper Tank PanelsConcrete Design – Upper Tank Panels

Present soil conditions unknownPresent soil conditions unknown

On site testing will be performed On site testing will be performed to determine soil type and unit to determine soil type and unit weight (using ASTM D-1556 weight (using ASTM D-1556 Sand Cone Method)Sand Cone Method)

Design of foundation carried out Design of foundation carried out for both weak sands and weak for both weak sands and weak claysclays

Standard concrete will be mixed Standard concrete will be mixed on site and placed in a circular on site and placed in a circular cardboard concrete form tube cardboard concrete form tube (Trade name SonoTube)(Trade name SonoTube)

Tank Solar Panel Mounting Tank Solar Panel Mounting System ForcesSystem Forces

Water TestingWater Testing

Water quality testing will be carried out to aid in Water quality testing will be carried out to aid in phase 2 (filtration) design / developmentphase 2 (filtration) design / developmentWater testing equipment:Water testing equipment: Test strips for nitrate/nitrite and PhTest strips for nitrate/nitrite and Ph Portable turbidity meterPortable turbidity meter 3M Petrifilm to test for total coliform and e-coli3M Petrifilm to test for total coliform and e-coli ““Homemade” incubator made from a heating pad and Homemade” incubator made from a heating pad and

suitcasesuitcase Watersafe kits (P/A coliform, lead, hardness, Watersafe kits (P/A coliform, lead, hardness,

pesticides, etc)pesticides, etc)

Community Health AssessmentCommunity Health AssessmentA health assessment will be carried A health assessment will be carried outoutFocus on water borne illnesses, Focus on water borne illnesses, common diseases, health issues in common diseases, health issues in areaareaWill use health survey (already Will use health survey (already translated into Spanish) similar to translated into Spanish) similar to those used in our previous Guatemala those used in our previous Guatemala projectsprojects2 team members (1 speech path, 1 2 team members (1 speech path, 1 who speaks Spanish) will carry out who speaks Spanish) will carry out with aid of nurses at Casa Nueva with aid of nurses at Casa Nueva VidaVida

Tentative Travel Team ItineraryTentative Travel Team ItineraryTravel Dates:Travel Dates: January 2 – 11, 2008 January 2 – 11, 2008Travel Plans:Travel Plans:

Fly from Chicago to GuatemalaFly from Chicago to Guatemala Private van for in-country transportation Private van for in-country transportation Fly from Guatemala to ChicagoFly from Guatemala to Chicago

Lodging and meals will be provided by CaritasLodging and meals will be provided by Caritas

Other Site Visits / Potential Assessments:Other Site Visits / Potential Assessments: Tecpan, Guatemala – Fire station constructionTecpan, Guatemala – Fire station construction Santiago Atitlan, Guatemala – water pumping system at orphanageSantiago Atitlan, Guatemala – water pumping system at orphanage

All EWB forms have been submittedAll EWB forms have been submittedAll team members are EWB-USA membersAll team members are EWB-USA members

See Pre-Implementation report 507D for more informationSee Pre-Implementation report 507D for more information