GB/T 27874-2023 English PDF (GBT27874-2023)

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GB/T 27874-2023: Technical requirement and assessment method of energy saving products and technologies for marine
GB/T 27874-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 03.220.40
CCS R 06
Replacing GB/T 27874-2011 and GB/T 27878-2011
Technical Requirement and Assessment Method of
Energy Saving Products and Technologies for Marine
ISSUED ON: MARCH 17, 2023
IMPLEMENTED ON: JULY 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Use Technical Conditions ... 6
5 Assessment Items and Methods ... 8
6 Test Methods and Verification Methods ... 9
7 Assessment Methods ... 11
Appendix A (Normative) Comparison Test Method of Engine Bench of Marine ... 17
Appendix B (Normative) Comparison Test of Actual Marine ... 20
Appendix C (Normative) Test Data Processing ... 23
Technical Requirement and Assessment Method of
Energy Saving Products and Technologies for Marine
1 Scope
This Document specifies the use technical conditions, assessment items and methods, test
methods, verification methods, and evaluation methods for the marine energy-saving products.
This Document is applicable to the assessment of the use effect of energy-saving products
aimed at reducing the energy consumption of various types of internal combustion engine-
powered marines.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
GB/T 2820.6 Reciprocating internal combustion engine driven alternating current
generating sets - Part 6: Test methods
GB/T 3221 Code for dock and sea trials of diesel-driven inland ships
GB/T 3471 General provisions for programming mooring and sea trials of sea going ships
GB/T 6072.3 Reciprocating internal combustion engines – Performance – Part 3: Test
measurements
GB/T 14951-2007 Measurement method of fuel saving technology for automobiles
GB 15097 Measure method for emission pollutant of exhaust gas of marine diesel engine
GB/T 25348-2010 Technical specification of fuel saving products for automobiles
GB/T 30009 Calculation method for energy efficiency design index of ships
GB/T 30010 Method for the verification of energy efficiency design index of ships
CB/T 4147 Measurement methods of fuel consumption rate for marine diesel engines
CB/T 4148 Measurement of thermodynamics parameters for marine diesel engines
3 Terms and Definitions
3.1 Energy saving products and technologies for marine
Products, technologies and processes that have no adverse effects on the marine's rapidity,
operating safety, engine power and other main performance and the environment while reducing
the energy consumption during the marine's operation.
3.2 Rate of fuel saving
After the use of energy-saving products and technologies for marine, the ratio of the magnitude
of the decrease in marine energy consumption to the energy consumption before using energy-
saving products and technologies for marine.
3.3 Rate of pollution reducing
After the use of energy-saving products and technologies for marine, the ratio of the magnitude
of the decrease in the emission of exhaust pollutants from marine to the emission of exhaust
pollutants before the use of energy-saving products and technologies for marine.
3.4 Unit fuel consumption
Fuel consumption per unit mileage of marine in operation.
3.5 Energy efficiency design index obtained from sea trial test
The actual energy efficiency index of the marine is calculated by bringing the data obtained
from the actual marine test into the calculation formula of the marine energy efficiency design
index.
NOTE: The energy efficiency design index obtained from sea trial test reflects the energy efficiency level
of the marine in actual operation.
4 Use Technical Conditions
4.1 Energy saving index
4.1.1 When the comparison test is carried out on the engine bench, the rate of fuel saving shall
meet any of the following conditions:
a) The energy-saving rate of the engine propulsion characteristics is no less than 1.5%, and
the energy-saving rate of the load characteristics is no less than 1.0%;
4.6.1 For marine energy-saving products applied to engines, when the engine bench test is used
for verification, the assessment conditions shall meet the requirements of 4.1.1, 4.2.1, 4.4.1 and
4.5 at the same time.
4.6.2 For marine energy-saving products applied to engines, when the propulsion characteristics
of the actual marine engine are used for verification, the assessment conditions shall meet the
requirements of 4.1.2a), 4.2.2, 4.4.1 and 4.5 at the same time.
4.6.3 For marine energy-saving products applied to engines, when the load characteristics of
the actual marine engine are used for verification, and the assessment conditions shall meet the
requirements of 4.1.2b), 4.4.1 and 4.5 at the same time.
4.6.4 The assessment conditions of marine energy-saving products applied to the hull structure
shall meet the requirements of 4.1.2c), 4.2.2, 4.3 and 4.4.2 at the same time.
5 Assessment Items and Methods
5.1 Assessment items
5.1.1 Energy saving
The energy-saving performance of marine energy-saving products is assessed by the rate of fuel
saving; and the assessment of rate of fuel saving can be obtained by selecting the following
methods according to the use and characteristics of the energy-saving products:
a) When the actual marine verification method is adopted, it can be calculated based on the
difference between the energy efficiency design index obtained from sea trial test
(EEDIATTD) before and after the use of marine energy-saving products; or the difference
before and after the unit fuel consumption of the marine under common working
conditions;
b) When the actual marine engine or laboratory engine bench verification method is used, it
can be calculated according to the average energy-saving rate of the engine propulsion
characteristic model, or can be calculated according to the average energy-saving rate of
the engine load characteristic model.
5.1.2 Power and rapidity
The power is expressed by the maximum torque comparison coefficient of the engine (KM),
which can be obtained by measuring the maximum torque under the set working condition on
the bench engine; the rapidity is expressed by the rapidity comparison coefficient of the marine
(KS), which can be obtained by measuring the speed of the marine under the setting working
conditions.
5.1.3 Navigation safety
The navigation safety is represented by the main indicators reflecting the maneuverability and
mobility of the marine, including gyration performance, braking performance and Z-type
mobility. Among them, the gyration performance is expressed by the gyration coefficient; the
braking performance is expressed by the braking coefficient; and the Z-type mobility is
expressed by the Z-type overrunning angle coefficient.
5.1.4 Environmental impact
The environmental impact is represented by the rate of pollution reducing. The rate of pollution
reducing can be obtained by measuring and analyzing the purification effect of the main
harmful components in the exhaust pollutants of the engine, specifically including the rate of
pollution r...