Enquiries | Comet Windmills

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Site Details

Amount of water required per day (litres)
Where is the source of water?
Any obstructions within 130 metres of the windmill? (such as trees, buildings, hills) Yes No
Inside diameter of bore casing (mm)? Refer to 'I' from Selection Guide
Depth of bore/well (meters)?
Distance from ground level to lowest water level (meters)? Refer to 'H' from Selection Guide
Height from ground level to top of tank or point of discharge (meters)? Refer to 'C' from Selection Guide
Length of delivery pipeline (kilometers)? Refer to 'D' from Selection Guide
Notes: Any other requirements?
* denotes required field

selection guide....

Accurate measuring is essential.

Instructions

It is very important that you provide accurate measurements so that the most efficient and economical pumping plant can be recommended to suit your requirements. First choose the diagram from the Selection Guide that is most similar to your proposed site. Answer the general data questions with accurate measurements and include pumping details.

Winds, especially the light breezes, must have free access to the mill from all directions. The bottom of the wheel must be at least 15ft (4.5metres) above all wind obstructions within 150yds (137 metres) of the mill.

Elevations

The mill should be loaded and balanced so that it will start pumping in light breezes. Its size depends upon the size of the pump and total elevation. The latter includes not only the vertical heights for suction and delivery elevations but also an allowance for probable water flow friction in the pipeline. The delivery pipe size should be at least half the pump diameter.

Suction

In a bore or well it is best to submerge the pump. For a creek or dam the pump should be placed close to the water and the suction elevation must not exceed 30ft (9m), or less if the suction pipeline is long.

Siting Details