1 Scope
This standard is applicable to household electric tumble dryers of the automatic and non-automatic type, with or without a cold water supply and incorporating a heating device.
This standard specifies and defines the principal performance characteristics of household electric tumble dryers of interest to users and the methods for measuring these characteristics.
This standard is concerned neither with safety nor with performance requirements.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
IEC 60456 Clothes Washing Machines for Household Use - Methods for Measuring the Performance
IEC 60734 Hard Water to be Used for Testing the Performance of Some Household Electrical Appliance
IEC 61036 Alternating Current Static Watt-hour Meters for Active Energy (Classes 1 and 2)
IEC 61591:1997 Household Range Hoods - Methods for Measuring Performance
ISO 5167-1 Measurement of Fluid Flow by Means of Pressure Differential Devices - Part 1: Orifice Plates, Nozzles and Venturi Tubes Inserted in Circular Cross-section Conduits Running Full
3 Definitions and Symbols
For the purposes of this standard, the following terms, definitions and symbols apply.
3.1
Tumble dryer
Appliance in which textile material is dried by tumbling in a rotating drum, through which heated air is passed.
3.2
Air vented tumble dryer
Tumble dryer with a fresh-air intake which is heated and passed over the textile material and where the resulting moist air is exhausted into the room or vented outside.
3.3
Condenser tumble dryer
Tumble dryer in which the air used for the drying process is dehumidified by cooling.
Note: Combinations of the above-mentioned types are possible.
3.4
Automatic tumble dryer
Tumble dryer which switches off the drying process when a certain moisture content of the load is reached.
Note: This may include conductivity or temperature sensing.
3.5
Non-automatic tumble dryer
Tumble dryer which does not switch off the drying process when a certain moisture content of the load is reached, usually controlled by a timer, but may also be manually controlled.
3.6
Pre-treatment
Successive washing, rinsing, spinning and drying of a new test load prior to its first use to avoid rapid changes of characteristics during the tests.
Foreword I
IEC Foreword II
IEC Introduction IV
1 Scope
2 Normative References
3 Definitions and Symbols
4 Dimensions
5 Rated Capacity
6 General Conditions for Tests
6.1 General
6.2 Electricity Supply, Water Supply and Ambient Conditions
7 Test Loads
7.1 Composition
7.2 Usage
7.3 Preparation
8 Measurement and Accuracy
8.1 Mass
8.2 Water and Air Temperature
8.3 Water Volume
8.4 Water Pressure
8.5 Water Hardness
8.6 Water Conductivity
8.7 Electrical Energy
8.8 Time
8.9 Ambient Humidity
9 Performance Tests
9.1 General
9.2 Programme for Drying Performance
10 Evaluation and Calculation
10.1 Final Moisture Content of the Load
10.2 Electric Energy Consumption
10.3 Water Consumption
10.4 Time
10.5 Condensation Efficiency
10.6 Evenness of Drying
11 Reporting of Test Results
Appendix A (Normative) Nominal and Standard Exhaust Duct for Tumble Dryer Testing
Appendix B (Normative) Cotton Test Load
Appendix C (Normative) Bone-dry Method
Appendix D (Normative) Water Preparation
Bibliography
