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GB 30978-2014 English PDF (GB30978-2014)

GB 30978-2014 English PDF (GB30978-2014)

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GB 30978-2014: Minimum allowable values of the energy efficiency and energy efficiency grades for water dispensers

This Standard specifies energy efficiency grades, minimum allowable values of energy efficiency, evaluating values of energy conservation for household and similar water dispensers as well as test methods and inspection rules. This Standard is applicable to hot-cold water dispensers of which rated voltage does not exceed 250V.
GB 30978-2014
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 27.010
F 01
Minimum allowable values of energy efficiency and
energy efficiency grades for water dispensers
ISSUED ON: JULY 24, 2014
IMPLEMENTED ON: JUNE 01, 2015
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Product classifications ... 6
5 Technical requirements ... 6
6 Calculation and test methods ... 8
7 Inspection rules ... 9
Annex A (normative) Test methods ... 11
Annex B (normative) Size and requirements for standard cup ... 16
Minimum allowable values of energy efficiency and
energy efficiency grades for water dispensers
1 Scope
This Standard specifies energy efficiency grades, minimum allowable values of energy efficiency, evaluating values of energy conservation for household and similar water dispensers (hereinafter referred to as water dispensers) as well as test methods and inspection rules.
This Standard is applicable to hot-cold water dispensers of which rated voltage does not exceed 250V.
This Standard is not applicable to instantaneous-heating water dispensers of which rated power exceeds 4,000W.
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 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 process stability)
GB 4706.1, Household and similar electrical appliances - Safety Part 1: General requirements
GB/T 22090-2008, Cold and hot water dispenser
QB/T 4098-2010, Household and similar instantaneous heating water
dispenser
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T keeping mode shall meet specified requirements simultaneously.
Comprehensive value of heating efficiency (or cooling efficiency), standby mode power and power consumption for warm keeping mode of combined
mode water dispenser shall meet specified requirements.
3.8 evaluating values of energy conservation for water dispenser
The minimum value of energy efficiency for water dispenser that is allowed by energy-saving product in specified test environment.
4 Product classifications
4.1 According to difference between heating system mode, cooling system mode and combined mode, water dispenser is classified into three categories. 4.2 Acyclic heating mode water dispenser includes external heating mode water dispenser and instantaneous-heating water dispenser.
4.3 Cyclical heating (cooling) mode water dispenser includes cyclical heating mode water dispenser, compressor cooling mode water dispenser and
electronic cooling water dispenser.
4.4 Combined mode water dispenser includes water dispenser that is combined with heating and cooling systems.
5 Technical requirements
5.1 Basic requirements
5.1.1 Safety requirements for water dispenser shall comply with provisions of GB 4706.1.
5.1.2 In specified test environment, hot water temperature of external heating mode water dispenser shall not be lower than 95??C; hot water temperature of instantaneous-heating water dispenser shall not be lower than 90??C; hot (cold) water outlet temperature of cyclical heating (cooling) mode water dispenser shall meet requirements of GB/T 22090-2008.
5.2 Energy efficiency grades
Energy efficiency grades for water dispenser are divided into three grades, of which grade-1 is the highest.
Energy efficiency for heating and standby mode power of acyclic heating mode water dispenser shall comply with provisions of Table 1. Energy efficiency of t - duration of measurement, in hours (h).
NOTE: Standby mode power is represented in W, to the nearest of 0.1W. Result is rounded off.
6.1.3 Calculation method for comprehensive value of energy efficiency grades for combined code water dispenser:
6.1.3.1 For combined mode water dispenser, respectively test two functions: cyclical heating (cooling) and acyclic heating. According to specified values in Table 1 and Table 2, determine its energy efficiency grade and correspond values separately: 5 points for grade-1, 3 points for grade-2 and 1 point for grade-3.
6.1.3.2 Comprehensive value of combined mode water dispenser is the sum of calculated values under two working conditions. Calculate method is according to formula (3).
Where,
S - comprehensive value;
S1 - value corresponding to energy efficiency grade of cyclical heating (or acyclic heating);
S2 - value corresponding to energy efficiency grade of cyclical cooling. 6.2 Test conditions and methods for water dispenser are in accordance with provisions of Annex A.
7 Inspection rules
7.1 Exit-factory inspection
7.1.1 Inspection plan is in accordance with GB/T 2828.1 and GB/T 2829; It is decided by inspection department of manufacturer.
7.1.2 Products that minimum allowable values of energy efficiency are
inspected as failed to meet requirements in 5.3 are not allowed to exit factory. 7.2 Type inspection
7.2.1 In one of following cases for water dispenser, type inspection for minimum allowable values of energy efficiency shall be carried out:
Annex A
(normative)
Test methods
A.1 Test conditions
A.1.1 Laboratory
A.1.1.1 Environmental parameters
Ambient temperature is adjustable within 10??C~43??C.
Parameters such as ambient temperature, ambient relative humidity and air flow rate are based on 2 points that are 1m higher than the ground and 350mm from vertical centerline of two side walls of water dispenser. If many water dispensers are tested at the same time, above parameters shall be arithmetic mean of values measured at specified points of each water dispenser.
A.1.1.2 Test temperature
Test temperature is 25??C??2??C.
A.1.1.3 Environment humidity
When not specified, relative environment humidity shall be 45%~85%.
A.1.1.4 Ambient air flow rate
Air flow rate is not greater than 0.25m/s.
A.1.1.5 Test power supply
Power supply voltage is 180V~250V adjustable. Stability is ??1.5%. Frequency is 50Hz ?? 1Hz.
A.1.2 Preparation before test
A.1.2.1 Water dispenser placement
Water dispenser (placing a bucket full of water) shall be placed on a black matt wooden solid test platform. It is open under platform to allow air to circulate freely. Top surface of platform shall be 300mm higher than floor of laboratory. Platform extends outward. Extend at least 300mm from both side walls and front wall of water dispenser, but not exceeding 600mm. The rear of platform shall extend to vertical partition at back of water dispenser.
of equal precision.
About temperature measuring instrument, instrument resolution is not less than 0.1K and accuracy is not less than ??0.5K.
A.1.3.2 Humidity measuring instrument
Measurement of relative humidity uses dry-wet bulb temperature meter or other measuring devices of equal precision. Accuracy of relative humidity measuring instrument is not less than ??5%.
A.1.3.3 Electrical test equipment
Accuracy of electrical instruments such as ammeter, voltmeter, power meter shall not be less than level 0.5. In exit-factory inspection, accuracy is not less than level 1.0. Index value of energy meter shall be able to read 0.001kW??h. Accuracy shall not be less than level 1.0.
A.1.3.4 Other test instruments
Timer accuracy shall not be less than ??2s/h. Meter resolution for measuring volume shall be no less than 5mL.
A.2 Test methods
A.2.1 Test of hot water outlet temperature
A.2.1.1 Acyclic heating mode water dispenser
a) External heating mode water dispenser: start heating system; when
heating stops, immediately measure water temperature of water storage
container;
b) Instantaneous-heating water dispenser: in accordance with method
specified in 6.2.1 of QB/T 4098-2010.
A.2.1.2 Cyclical heating mode water dispenser: in accordance with method specified in 6.2.1.1 of GB/T 22090-2008.
A.2.2 Test of cold water outlet temperature
Cyclical cooling mode water dispenser: in accordance with method specified in 6.2.1.1 of GB/T 22090-2008.
A.2.3 Test method for power consumption for warm keeping mode
Cyclical heating (cooling) mode water dispenser: in accordance with method specified in 6.5 of GB/T 22090-2008.

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