Article | REF: C3830 V1

Domestic pumps and booster sets - Water supply for rural homes

Author: Yves POULLIN

Publication date: November 10, 1990

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Français

6. A reminder of some practical information

6.1 Speed variation laws

Any centrifugal or side-channel pump is subject to certain physical laws when the drive speed varies, namely :

  • the flow ratio is equal to the velocity ratio ;

  • the ratio of the heights or pressures generated is equal to the square of the ratio of the speeds ;

  • the ratio of absorbed power is equal to the cube of the ratio of speeds.

Any increase in speed (e.g. motor change or pulley change in a belt drive) can overload the original motor, making it inadequate.

...
You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

The finishing and equipment of the building

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
A reminder of some practical information