DB31/ 850-2014
Permissible values of energy efficiency and energy efficiency grades for axial flow fans formed by extrusion and pultrusion process (English Version)

Standard No.

DB31/ 850-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

Shanghai Provincial Standard of the People's Republic of China

Status

Withdraw 2021-03

Latest

DB31/ 850-2014

Scope

This standard specifies the energy efficiency limit values, energy efficiency levels, energy saving evaluation values and determination methods of axial flow fans formed by the extrusion and pultrusion process. This standard is applicable to axial flow fans for large and medium-sized mechanical ventilation cooling towers and air cooler devices with a diameter of 1000 to 9750 mm.

DB31/ 850-2014 history

• 2014 DB31/ 850-2014 Permissible values of energy efficiency and energy efficiency grades for axial flow fans formed by extrusion and pultrusion process