General Information
WHY USE THE POLDAW WIND PUMP?
DESIGN CRITERIA
• Robustness and reliability (design life-span of the bearings can last 20—25 years).
• Practical and cost-effective manufacture
• Easy, safe installation and maintenance
• Start-up in low wind speed (3 m/s or less approximately 10.8 Km/hr)
• Survival in high winds starts to furl to protect itself in high winds (180 Km/hr)
• Adequate pumping capacity
• Low speed operation for smoothness and reliability
• The Poldaw wind pump design meet these criteria and at the same time, achieve the lowest cost possible without compromising robustness and reliability.
• Most small wind pumps with deep well capacity use a speed reduction gearbox to avoid dynamic problems in the pump and pump
rods. However, gearboxes are expensive and require good lubrication therefore, high maintenance. The Poldaw transmission uses
simple crank and rocker arrangement with a specially developed rotor which develops high torque at low speed.
