T/DZJN 41-2021 Commercial water dispensers: Energy efficiency limit and energy efficiency level

Scope

Main technical content: 4.3 Energy efficiency limit values under the test conditions specified in the document, including the minimum thermal efficiency and insulation temperature drop values required for water kettles. 5 Test methods 5.1 General test conditions All tests in this document are conducted under the following conditions: a) Single-phase power supply voltage: 220V ± 5%; Three-phase power supply voltage: 380V ± 5%; Power frequency: 50 ± 1Hz; b) Ambient temperature: (23 ± 2) °C; c) Relative humidity: 45% to 75%; d) Inlet water temperature: (23 ± 2) °C; e) Inlet water pressure: 50kPa to 600kPa; f) Altitude: ≤1000 meters. 5.2 Actual capacity 5.2.1 Mass of the test instrument in a water-free state: m1. 5.2.2 Connect the water and power sources of the commercial water kettle and operate it according to the instructions until the water kettle stops supplying water and heating. Measure the mass of the instrument at this time: m2. 5.2.3 The actual capacity of the instrument is referred to in QB/T 4270.

Development Information

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