INTRODUCTION
The aim of this guide is to assist manufacturers in the process of constructing a
low-cost axial turbine, thereby helping provide rural families with access to this
type of equipment, in order to facilitate the availability of electrical power.
The guide covers the process of manufacture of a vertical axis turbine with a
specific number of revolutions (ns = 151) The design parameters are:
• Rate of flow (Q) = 0.524 m3/s
• Height (H) = 7 m
• Rotational speed = 900 rpm.
This model is, without significant modifications, capable of operating in different
working conditions as illustrated in the table below. For lower power ratings the
main problem would be the cost-benefit issue, as this is a large device, while for
higher power ratings than those contained in the table, the design would require
revision, in particular in terms of the resistance of certain parts such as the
bearings, axle, etc.
AXIAL TURBINE OPERATING RANGES
Wheel diameter = 400 mm, ns = 151
H (m)
N (r.p.m.)
Q (m3/s)
5 761 0.443
6 833 0.485
7 900 0.524
8 962 0.560
9
1021
0.594
P.(kW)
15
20
25
30
36
In the event that higher power ratings are required, the resistance of
components and other aspects would require examination, such as: axle,
bearings, transmission system, blades, etc. Strictly under the responsibility of
the manufacturer.