Kijito Wind Power Limited

Thursday, 15 Nov 2018

Kijito Wind Pumps Design

No fuel and low maintainance cost

A windpump needs no fuel and little maintenance and will last 20 years and more.The cost of financing a windpump compares very favourably with any conventional pumping system.Using a windpump can immediately help your cash flow.Provided local wind conditions are adequate, a windpump will always produce water more cheaply and with less trouble than an engine.When the next fuel shortages occur, the windpump will be immune to the problem.

Conditions required

Windpumps are very sensitive to windspeed; a slight increase in mean windspeed produces a marked increase in output of water.For example, only a 25% increase in windspeed results in a 100% increase in energy availability.The wind energy captured is in proportion to the area of the windpump rotor.Therefore a machine with a rotor twice as big in diameter as another will actually produce over four times as much water under given operating conditions.

Rotors

KIJITOS are at present available in four rotor sizes; 12ft, 16ft, 20ft, 24ft and 26ft.The rotors are scientifically designed for high aerodynamic efficiency compared with traditional windpump designs.The rotor blades can be individually replaced if damaged for any reason.

Mechanical transmissions and lubrications

Power from the rotor is transmitted to the pump via a unique crank and rocker arrangement.All rotating components run on highest quality long life ball and roller bearings, which are easily lubricated in a few minutes twice a year using a vehicle grease gun.

Governing and Storm Protection

The tail of the KIJITO is set to allow the rotor to turn automatically edge-on to the wind whenever gusts exceed 20mph (9m/s).The machine is designed to withstand extreme storm conditions of 100mph (45m/s).Governing is completely automatic and requires no human intervention.

Towers

KIJITOS are normally supplied on 30ft (9m) tripod towers.However extension sections are available as options to increase the rotor height and get better performance.All towers are hinged at their bases to allow easy erection and servicing.This also greatly facilitates access to the borehole when the windpump is lowered, and reduces borehole and pump maintenance time and costs.

Finish

KIJITOS are finished to the highest standards.A special marine finish is available as an option for use on sea coasts where corrosion can otherwise pose serious problems for most steel structures.



Wind Pumps Technical specifications

2008 kijito

Starting wind speed 2.5m/sec
Rated wind speed 7m/sec, rotor speed 1.5rps(90rpm)
Survival wind speed m/s 40m/sec
Maximum rotor speed m/s 2rps (120rpm)
Rotor diameter m/s 8ft with 12 blades

Model 12ft

Starting wind speed 2.5
Rated wind speed 5
Survival wind speed m/s 45
Maximum rotor speed m/s 90
Rotor diameter m/s 3.65(12)
Number of blades rpm 16
Standard tower height 9(30)
Standard tower height m(ft) 3(10)

Model 16ft

Starting wind speed 2.5
Rated wind speed 5
Survival wind speed m/s 45
Maximum rotor speed m/s 80
Rotor diameter m/s 4.9(16)
Number of blades rpm 20
Standard tower height 9(30)
Standard tower height m(ft) 3(10)

Model 20ft

Starting wind speed 2.5
Rated wind speed 5
Survival wind speed m/s 45
Maximum rotor speed m/s 70
Rotor diameter m/s 6(20)
Number of blades rpm 24
Standard tower height 9(30)
Standard tower height m(ft) 3(10)

Model 24ft

Starting wind speed 2.5
Rated wind speed 5
Survival wind speed m/s 45
Maximum rotor speed m/s 60
Rotor diameter m/s 7.3(24)
Number of blades rpm 24
Standard tower height 9(30)
Standard tower height m(ft) 3(10)

Model 26ft

Starting wind speed 2.5
Rated wind speed 5
Survival wind speed m/s 45
Maximum rotor speed m/s 55
Rotor diameter m/s 7.9(26)
Number of blades rpm 24
Standard tower height 9(30)
Standard tower height m(ft) 3(10)