What is ISO 12759-5 about?

ISO 12759 series has been developed to ensure the efficiency of fans. A fan is a powered machine used to create a flow of air. ISO 12759-5 establishes a classification of fan efficiency for all jet fan types driven by motors with an electrical input power range from 5,5 kW to 155 kW (and this is likely to be in the size range 500 mm to 1600 mm diameter with motors rated between 5,5 kW and 150 kW.

ISO 12759-5 describes several different procedures to classify the efficiency of a fan or to apply a minimum efficiency limit (MEL). To ensure that the defining fan performance characteristics are common throughout the world, ISO 12759-5 has been developed. ISO 12759-5 can be used by legislators or regulatory bodies for defining future energy-saving targets.

Note 1: ISO 12759-5 is not applicable to jet fans for use in enclosed car parks.

Who is ISO 12759-5 for?

ISO 12759-5 on jet fans is useful for:

Design engineers
Quality control personnel
Research and development facilities
Electronic appliances manufacturers
Manufacturers of fans
Legislators or regulatory bodies

Why should you use ISO 12759-5?

Fans of all types are used for ventilation and air conditioning, for process engineering (drying, pneumatic conveying and combustion air supply) and agriculture. Indeed, the energy use of fans has been calculated as nearly 20 % of total worldwide energy usage. ISO 12759-5 helps users to classify the jet fan efficiency to maintain economic growth and to promote energy efficiency.

Jet fans are designed to create air movement and control by environment using a jet. ISO 12759-5 guides you about jet fan installation, calculation of jet fan efficiency and tolerance. Following these guidelines, you can ensure the performance of jet fans.

ISO 12759-5 has proposed a classification system that incorporates a series of efficiency bands. With improvements in technology and manufacturing processes, the minimum efficiency levels of fans can be reviewed and increased over time. ISO 12759-5 implementation also provides information on a rotary bladed machine that receives mechanical energy and utilizes it by means of one or more impellers fitted with blades to maintain a continuous flow of air or other gas passing through it and whose work per unit mass does not normally exceed 25 kJ/kg. Using ISO 12759-5 you can establish a classification of fan efficiency for all jet fan types driven by motors with an electrical input power range from 5,5 kW to 155 kW.

BS EN ISO 12759-5:2021

Fans. Efficiency classification for fans - Jet fans

Current

Published:

31 Aug 2021