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API MPMS CH 10.8, 3rd Edition: Standard Test Method for Sediment in Crude Oil by Membrane Filtration

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ISO/TR 42505:2026 Sharing economy — Shared manufacturing — Concepts and models

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ISO 4306-1:2026 Cranes — Vocabulary — Part 1: General

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ISO 12759:2024

ISO 12759:2024 Fans – Efficiency classification for fans – Part 6: Calculation of the fan energy index

CDN $352.00

Description

This document defines the calculation method for determining the fan energy index (FEI), which is an energy efficiency metric for fan duty points. This metric provides a standardized and consistent basis to compare fan energy performance across fan types and sizes at a given fan duty point.

This document is applicable to fans driven by electric motors and fans without drives. It is not applicable to circulating fans or air curtains.

The fan energy index can only be calculated for fan duty points above a minimum air power of 125 W (where air power is the product of volume flow rate and fan static pressure) or above a minimum volume flow rate of 2,0 m3/s.

Edition

1

Published Date

2024-05-22

Status

PUBLISHED

Pages

40

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

This document defines the calculation method for determining the fan energy index (FEI), which is an energy efficiency metric for fan duty points. This metric provides a standardized and consistent basis to compare fan energy performance across fan types and sizes at a given fan duty point.

This document is applicable to fans driven by electric motors and fans without drives. It is not applicable to circulating fans or air curtains.

The fan energy index can only be calculated for fan duty points above a minimum air power of 125 W (where air power is the product of volume flow rate and fan static pressure) or above a minimum volume flow rate of 2,0 m3/s.

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