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GB/T 40008.1-2021: Performance evaluation and calculating method for water heater system - Part 1: Household and similar water heater system
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Performance evaluation and calculating method for water heater system - Part 1: Household and similar water heater system
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GB/T 40008.1-2021
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PDF similar to GB/T 40008.1-2021
Standard similar to GB/T 40008.1-2021 GB/T 39976 GB 50072 GB 50243 GB/T 44855 Basic data | Standard ID | GB/T 40008.1-2021 (GB/T40008.1-2021) | | Description (Translated English) | Performance evaluation and calculating method for water heater system - Part 1: Household and similar water heater system | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P49 | | Word Count Estimation | 13,110 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 40008.1-2021: Performance evaluation and calculating method for water heater system - Part 1: Household and similar water heater system
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(Performance evaluation and calculation method of hot water preparation system - Part 1.Household and similar hot water preparation system)
ICS 27.010
P49
National Standards of People's Republic of China
Performance evaluation and calculation method of hot water preparation system
Part 1.Household and similar hot water production systems
Released on 2021-04-30
2021-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
GB/T 40008 "Hot Water Preparation System Performance Evaluation and Calculation Method" is planned to be divided into the following three parts.
---Part 1.Household and similar hot water production systems;
---Part 2.Low ambient temperature heating and hot water preparation system;
---Part 3.Multi-energy complementary heating and hot water production system.
This part is Part 1 of GB/T 40008.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part is proposed and managed by the National Energy System Standardization Technical Committee (SAC/TC459).
Drafting organizations of this section. China National Institute of Standardization, Zhuhai Gree Electric Co., Ltd., Beijing University of Technology, Qingdao Haier Intelligent Technology
Technology Research and Development Co., Ltd., Tsinghua University, Beijing Gas Group Co., Ltd., Qingdao Economic and Technological Development Zone Haier Water Heater Co., Ltd.,
Hefei General Mechanical and Electrical Products Testing Institute Co., Ltd., International Copper Association (China), China Energy Conservation Association, Beijing Intercooling Quality Certification Center have
Co., Ltd., Shanghai Hitachi Electric Co., Ltd., Shenzhen McQuay Air Conditioning Co., Ltd., Emerson Environmental Optimization Technology (Suzhou) Co., Ltd., Zhejiang
Jiangzhongguang Electric Co., Ltd., Zhejiang Zhengli Bioenergy Technology Co., Ltd., Guangdong Niuentai New Energy Technology Development Co., Ltd.
The main drafters of this section. Cheng Jianhong, Liu Hua, Li Hongqi, Yu Cailing, Chen Jin, Li Junming, Li Xiaoshuang, Zheng Xiaofeng, Zhang Mingsheng, Gao Yifeng,
Liu Meng, Song Zhongkui, Guo Yong, Zhou Yi, Pan Likui, Liu Qiang, Ling Yongjun, Huang Yuangong, Zhao Misheng.
Performance evaluation and calculation method of hot water preparation system
Part 1.Household and similar hot water production systems
1 Scope
This part of GB/T 40008 specifies the performance evaluation method and calculation method of the hot water preparation system.
This section applies to heat pump water heaters, gas water heaters (gas instant water heaters, positive displacement gas water heaters), electric water heaters (water storage
Type electric water heaters, quick-heating electric water heaters) as heating equipment, household and similar hot water production systems for the purpose of providing hot water (to
Hereinafter referred to as "system").
Other heat source equipment or hot water preparation systems can be used as reference.
This section does not apply to solar water heaters and composite water heaters that use solar energy and other heat source equipment.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB 6932-2015 Domestic gas instantaneous water heater
GB 18111-2000 Gas storage water heater
GB/T 20289-2006 Storage type electric water heater
GB 20665-2015 Domestic gas instantaneous water heaters and gas heating water heaters energy efficiency limit values and energy efficiency grades
GB 21519-2008 Energy efficiency limit values and energy efficiency grades for storage-type electric water heaters
GB/T 23137-2008 Household and similar heat pump water heaters
GB/T 26185-2010 Fast heating electric water heater
GB 29541-2013 Heat pump water heater (heater) energy efficiency limit value and energy efficiency grade
GB/T 33757.1 Energy Saving Rate of Distributed Cooling, Heating and Electric Energy System Part 1.Fossil Energy Drive System
CJ/T 336-2010 Condensing household gas fast water heater
3 Terms and definitions
GB 20665-2015, GB 21519-2008, GB 29541-2013, GB/T 33757.1 and the following terms and definitions
Applies to this document.
3.1
Hot water preparation system waterheatersystem
An energy system composed of hot water heating equipment, storage equipment and pipelines.
3.2
Heat pump water heater hot water preparation system annual heating performance coefficient annual heat performance factor; AHPF
The ratio of the hot water energy obtained by the user side throughout the year to the electricity consumed by the heat pump hot water preparation system.
3.3
Primary energy ratio
The ratio of the heat obtained by the hot water production system to the energy consumed.
Note. The energy consumed is converted into primary energy.
4 Annual heating energy utilization rate
In a year, the ratio of the total heat of hot water required throughout the year to the total final energy input into the hot water production system converted into primary energy is calculated by
Calculation of formula (1) and formula (2).
ηs=
j=1
Wj×nj
j=1
Wj Wloss
a×η
×nj
Pe×hj×nj×3600
(1)
hj=
(Tj,i,1-Tj,c)·c
Qj×3.6
(2)
Where.
ηs ---The ratio of the heat generated by the water heater to the converted heat of the primary energy consumed, the primary energy generation rate is calculated at 35%,
The unit is kilojoules per kilojoule (kJ/kJ).
Wj --- The amount of hot water used by the household and the total hot water heat energy required per day, refer to Appendix A or test and determine according to the actual situation of the user;
Table B.1 The total hot water energy required per day when the daily average temperature is tj, in accordance with the provisions of Appendix B, the unit is kilojoules per day
(kJ/d).
nj --- the number of days when the daily average temperature number tj occurs in Table B.1, see Appendix B, the unit is day (d).
Wloss---The heat leakage loss of the water tank, the storage water heater is in the heat preservation stage after each heating, due to the existence of the heat leakage phenomenon of the water tank
The heat loss caused by the rapid heating (direct heating) water heater tank leakage loss is zero, and the unit is kilojoules per day (kJ/d), see attached
Record D.
a --- Primary energy conversion factor. Take 1 if the energy consumption is gas, and take 35% if the energy consumption is electric (primary energy power generation)
rate).
η ---The heating efficiency of the water heater. Heat pump water heaters have annual heating performance coefficient (AHPF, determined according to Appendix C), water storage type
Electric water heaters are determined according to GB/T 20289-2006, fast heating electric water heaters are determined according to GB/T 26185-2010, household
Gas instantaneous water heaters are determined in accordance with GB 6932-2015, and condensing household gas instantaneous water heaters are in accordance with CJ/T 336-2010
Confirmed, gas volumetric water heater is determined according to GB 18111-2000.
Pe --- The electrical power of auxiliary equipment when the gas water heater is in use, in kilowatts (kW).
hj --- The heating operation time of the water heater, in hours (h).
Tj,i,1---represents the actual hot water termination temperature when the water heater is running at the target termination temperature (41℃ or 55℃) under the ambient temperature tj, single
The position is in degrees Celsius (°C).
Note 1.Subscript j. corresponding to the ambient temperature interval j in Table B.1; subscript i. specified end water temperature (according to the provisions of this section, i is equal to 41 or 55); subscript 1.use
When it means that the temperature is the end of heating, it is distinguished from the end temperature of the heat preservation in the formula (D.1) [Equation (D.1) replaces 1 with 2, which means the end of heat preservation].
Note 2.Due to experimental and control deviations, the actual hot water termination temperature cannot all be exactly 41°C or 55°C.
Tj,c --- the cold water temperature when the average daily temperature is j, in degrees Celsius (℃).
c --- The average specific heat capacity of water, the value of this formula is 4.187, the unit is joule per kilogram degrees Celsius [J/(kg·℃)].
Qj ---The heating capacity of the water heater with temperature number j. The heat pump water heater is determined according to Appendix C, and the storage electric water heater is according to GB/T 20289-
Determined in.2006, fast-heating electric water heaters are determined according to GB/T 26185-2010, and household gas-fired fast water heaters are determined according to GB/T 26185-2010.
Determined by GB 6932-2015, condensing household gas instantaneous water heaters are determined according to CJ/T 336-2010, gas volumetric type
The water heater is determined according to GB 18111-2000, and the unit is watt (W).
5 System heating conversion coefficient and water tank leakage heat loss test method
5.1 The amount of hot water used by the household and the total hot water energy required per day are determined by referring to Appendix A or testing according to the actual situation of the user.
5.2 The heat pump water heater (heater) shall be tested according to the test procedures of GB 29541-2013, GB/T 23137-2008 and the working conditions of this part.
Try the plan.
5.3 The gas water heater shall be maintained in accordance with the test procedures of the heat load test specified in GB 20665-2015 and GB 18111-2000 and the working conditions of this part.
Seeking to determine the test plan.
5.4 The 24h inherent energy consumption test of electric water heaters according to GB 21519-2008, GB/T 20289-2006, GB/T 26185-2010
The steps and working conditions in this section require the determination of the test plan.
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