The+Solar+Powered+Water+Pump

We are using power voltaic (PV) array to collect sunlight and generate energy to run the water pump. The water is stored in an elevated reservoir, and then fed to the crops by drip irrigation using gravitational force.
 * The general idea **


 * Basic demonstration **



OSHNIC Solar panel.

//The hydraulic energy required (kWh/day) // = volume required (m³/day) x head (m) x [water density x gravity / (3.6 x 10^6 )] = volume required (m³/day) x head (m) x 0.002725
 * Sizing solar pumps: **

//The solar array power required (kWp) // = __Hydraulic energy required (kWh/day)__  Av. daily solar irradiation (kWh/m²/day x F x E) where F = array mismatch factor = 0.85 on average and E = daily subsystem efficiency = 0.25 - 0.40 typically

__Relation: __ An acre of corn gives off 4000 gallon of water (~ 33000 lbs) in evaporation per day. Imagine walking a quarter of a mile and carrying 50 lbs of water for 660 times a day to replenish the water loss!!!


 * Concerns: **
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Training
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Maintenance
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Consider vertical integration
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Cultural changes
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Material sourcing (would like to keep as local as possible)
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Fencing

<span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">How much sun does Ghana have? <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">System demonstrated by Stanford team <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">How to calculate water volume pumped by solar power. <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">How much water is needed to...
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 140%;">Source: **