SOLAR TUBE WELL
Providing sufficient water for irrigation is becoming harder and harder for farmers across globe and specially in our country. Main reasons behind are less water availability in rivers which were sole and enough source of water some decades ago but now hardly available to common farmer, never there electricity when required and ever increasing costs of diesel and gasoline.
In this situation the idea of using solar to generate electricity has become more and more viable. Most of the areas of our country are capable to produce 5.3 kWh/m²/day energy which is 10 times higher than Germany, the country with largest installations of alternate energy upto now. Which is one of the best figures around the world and could have been appreciated a long time ago by utilizing solar energy in our power grid.
Solar-based water pumping system can be DC or AC operated. DC water pumping system is somewhat cheaper but not applicable in case of larger water-pumping system. i.e. three phase water pumps. Solar-Powered pumping systems (called tube wells in Pakistan) consist of three basic components:
1. Solar Panels (Photovoltaic Module)
There are three type of Solar Photovoltaic technologies available worldwide (Thin-Film, Mono-Crystalline and Poly-Crystalline). Thin-Film solar modules are more likely used and recommended for solar-powered tube-well as they are single cell module, low power loses because of higher temperature tolerance range, have longer lifespan and ideal for low-light or cloudy weather condition.
2. Inverter (MPPT Controller/inverter/pump drive)
An inverter’s elementary purpose is to change DC (Direct current) energy into AC (Alternate current). Usually this technique is used where we tend to operate 3phase water-pumping system. Inverter contains MPPT (Maximum Power Point Tracking) charger and pump controller in it. This method doesn”t require batteries to be necessary part of the system.
3. Water Pump (Horizontal Centrifugal/Turbine Pump/Submersible Pump)
Water pump is third basic component. In longer depth of water areas, submersible water pumps are considered as most energy efficient with maximum water outlet delivery. World renowned submersible water pump manufacturers are Saer (Italy) and Grundfos (Germany). However horizontal centrifugal pumps are feasible and more efficient in lower depth of water. Solar water-pumping system is zero in running cost, unattendent, simple, safe, reliable operation.
Halloki Village (Lahore) 5 inch outlet photo gallery
Solar water-pumping system is zero in running cost, unattendent, simple, safe, reliable operation.