HOME         PRODUCTS         CONTACT US           FEATURES         LINKS
   
 

SELECTION GUIDE
 

 

There are over a dozen different sizes of Comet windmills available Manufacturers guarantee their mills ONLY if they are properly erected to work a certain size of pump at the maximum height of suction and lift, or elevation as it is termed, which is specified in their pumping tables.

Not only are the suction and delivery elevations important, but details of lengths of pipes, layout of plant, and of course, the quantity of water per 10-hour day, are required to enable the manufacturer to supply the correct sizes of mill and pump to give long satisfactory service.

 
 

Selection Guide

WINDMILL SPECIFICATION

General Data:

A State the number of the diagram which is similar to your proposed layout. If your layout is different, please sketch the dimensions below and details of any branch pipelines

B Amount of water required each day

C Vertical height from ground level at mill site to point of discharge

D Vertical heights from ground level at mill to any rise or depression in delivery pipeline—see Diagram 5

E Length of discharge pipe or delivery pipeline

F Will pipeline be laid above or below ground level

G Capacity and type of storage tank

H Height of tankstand

I Length, size and type of troughing

J Length of pipe from tank to trough. Distance and height of trees and other wind obstructions within 150 metres of mill site

K Average wind conditions

       □    Calm     □    Moderate     □    Strong

 

DEEP PUMPING (1,2,3)

From Bores and Wells

N Distance from ground level to lowest water level during pumping test

O Litres pumped each hour during test

P Depth from ground level to bottom of bore or well

Q Inside diameter of bore casing or size of well

R Height from top of casing or well to ground level

 

SURFACE PUMPING (1, 3, 4, 5)

From Rivers, Canals, Dams and Shallow Wells

S Vertical height from normal water level to ground level at mill site

T Vertical height from lowest water level to ground level at mill site

U Length of suction pipe from footvalve to pump

V Vertical height above inlet

     of any unavoidable rise to suction pipeline

 

WATER CONSUMPTIONS APPROX. LITRES DAILY

Domestic purposes, per person 270

Dairy cattle, per head   70

Horses / Cattle per head   50

Sheep, each     7

Garden, per hectare         35,000

Accurate measuring is essential