Proposal: Solar GrantFinal Project: MSE 567 & 467

HuidongJonathanMarySabinaYounes

Outline

1. Site Selection2. Load Profile3. System Availability4. Photovoltaic Array Sizing5. Battery Sizing6. Power Conditioning Unit ( inverters, fuses, wiring,….)7. Cost Breakdown

Heavily forested area at Tanzania Typical village house

Village People

Economic consideration in site selection:1. Cost of site preparation2. Cost of access to the site

The Project

• Provide PV power at -3.61, 37.37 for 10 yrs• 100 small homes ~60ftx60ft 20° slopes• Surrounded by 75ft trees• 3 month rainy season (spring: Aug – Oct)

– Random twice a week sun• Remainder of year is sunny

Parts/Labor

• Reliability– PV 40 yrs– Power electronics 5 yrs– Batteries 3 yrs– Cleaning every 3 months

• Cost - $/h– $5 for laborer– $10 for electrical installer– $30 for engineer/system designer– 5 ton truck $2/mile

Mombasa Port

Route From Moshi

Cleaned Road

Work Load• Lights

– 25W*10lamps*12h/day = 3kWh/day• Refrigerator

– 700kWh/yr*yr/365days = 1.91781kWh/day• Television

– 125W*5h/day + 15W*19h/day = 0.91kWh/day• Air Conditioner

– 750W*24h/day = 18kWh/day• Computer

– 200W*5h/day + 10W*19h/day = 1.19kWh/day• Washing Machine

– 0.25kWh/wk*wk/7days = 0.03572kWh/day• Total = 25.05353kWh/day/house

Components

• Panels– China, GOD company, mono-crystalline 180W, 16% efficiency, 36

Vpm, 1580*808*35 (mm), $283• Batteries

– Shenzhen Haonaite Power Co, 12V*200AH, 522*238*218 (mm), $168

• Inverter/Charge controller– Shanghai Jinxian Solar Tech Co, 220V 50Hz 3kW, 1*1*2 (m),

$1,757• Wire

– Shanghai Yingqiang Electronic Co, TIN PLATED COPPER WIRE, $0.805/m

Array Sizing

Average PV System Component EfficienciesPV array 80-85%Inverter 80-90%Wire 97-98%Disconnects, fuses 98-99%Total grid-tied PV system efficiency 60-75%New batteries (roundtrip efficiency) 65-75%Total off-grid PV system efficiency (AC) 40-56%

Array/Battery Sizing

• 25.05353kWh/(4.55*0.18*0.4) = 76.476– 77 Panels

• 77 panels insufficient to recharge battery bank– Increased to 78

• 1653.53kWh/(200Ah*12V*0.8*0.001) = 861.214 batteries– Used 862

Array/Battery Sizing

Facility Layout

Battery Storage

Cost• Panels – $2,210,230

– 7,800 panels• Controller/Inverter – $358,428

– 204 units• Batteries – $14,481,600

– 86,200 batteries– (worst case/times # by 3)

• Wire – $4025– 5000m

• Site Clearance – $25,000– (minus lumber sales)

• Battery storage – $60,000– Hole & Material

Controler/Inverter2%

Wiring0%

Battery85%

Fuse0%

Swich

0%Panel13%

Component Cost Breakdown

Panel33%

controllers,Inverters21%

Wire, Swich, Fuse1%

Battery45%

Cost Breakdown for the shipping of the component

Basement59%

Battery Bank place12%

Bulldozer18%

Tools2% Labor

9%

Site Preparation Cost Breakdown

Labor training Engineers for training

Instalation cost0

5000

10000

15000

20000

25000

10800

7200

24480

Series 1 Series 2 Series 3

Cost• Shipping

– Truck – $516,600• 1300 trips/2$ per mile/ 216 miles

– Ship – $51,460• $630 per container/ 80 containers

• Installation– Laborers – $24,480– Engineer – $58,320

• Training– Labor – $10,800– Engineer – $7,200– Cleaning – $146,000

• Total – $17,954,143

Panels

Controller/Inverter

Battery

Wire Site Clearance Battery Bank Truck ShippingShip Labor Engineer

Total Cost Breakdown