1 Scope
This standard specifies the minimum allowable values of energy efficiency, energy efficiency grades, evaluating values of energy conservation, test methods, inspection rules and marking of energy efficiency grades for household and similar purposes A.C. electric ventilating fans (hereinafter referred to as ventilating fans).
This standard is applicable to A.C. motor driven ventilating fan, whose single-phase rated voltage is not greater than 250V, rated input power not greater than 500W and diameter of blade wheel not greater than 500mm.
This standard is not applicable to ventilating fans for the following usages:
a) ventilating fans specially designed for industrial usage;
b) ventilating fans to be used under special conditions, e.g. where there exists corrosive or flammable and explosive gas, dust, steam or coal gas;
c) ventilating fans used for air heater, refrigeration equipment or air conditioner as well as air-to-air energy recovery equipment;
d) ventilating fans which are embedded in appliances (e.g. stove and microwave cooking appliances);
e) marine ventilating fans;
f) Type C ventilating fans, two-way air-out ventilating fans as well as Type B and Type D ventilating fans with maximum static pressure less than 25Pa.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1236 Industrial Fans - Performance Testing Using Standardized Airways
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 2829 Sampling Procedures and Tables for Periodic Inspection by Attributes ( Apply to Inspection of Stability for Productive Process)
GB/T 14806 A.C. Electric Ventilating Fans and Regulators for Household and Similar Purposes
3 Terms and Definitions
For the purposes of this document, the terms and definitions defined in GB/T 14806 and the following apply.
3.1
energy efficiency values for ventilating fans
the ratio of measured air volume of ventilating fan to measured input power of fan blade drive motor under the testing condition specified in standard, expressed in cubic meter per minute watt [m3/(min?W)]
3.2
minimum allowable values of energy efficiency for ventilating fans
the minimum energy efficiency values for ventilating fans under the testing condition specified in standard, expressed in cubic meter per minute watt [m3(min?W)]
3.3
reach minimum allowable values of energy efficiency for ventilating fans
the minimum allowable values of energy efficiency for ventilating fans after this standard has been implemented for a certain years
3.4
evaluating values of energy conservation for ventilating fans
the minimum energy efficiency index for energy-conservation ventilating fans under the testing condition specified in standard, expressed in cubic meter per minute watt [m3(min?W)]
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Technical Requirements
5 Test Methods
6 Inspection Rules
7 Marking for Energy Efficiency Grade
