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NB/T 34036-2020 English PDF

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NB/T 34036-2020: (Test method for small biomass boiler)
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NB/T 34036: Evolution and historical versions

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NB/T 34036-2020English169 Add to Cart 3 days [Need to translate] (Test method for small biomass boiler) Valid NB/T 34036-2020
NB/T 34036-2016English239 Add to Cart 2 days [Need to translate] Test method for small biomass boiler Obsolete NB/T 34036-2016

PDF similar to NB/T 34036-2020


Standard similar to NB/T 34036-2020

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Basic data

Standard ID NB/T 34036-2020 (NB/T34036-2020)
Description (Translated English) (Test method for small biomass boiler)
Sector / Industry Energy Industry Standard (Recommended)
Classification of Chinese Standard F13
Word Count Estimation 7,757
Date of Issue 2020-10-23
Date of Implementation 2021-02-01
Older Standard (superseded by this standard) NB/T 34036-2016
Regulation (derived from) National Energy Administration Announcement No. 5 of 2020
Issuing agency(ies) National Energy Administration

NB/T 34036-2020: (Test method for small biomass boiler)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for small biomass boiler Energy Industry Standards of the People's Republic of China Replace NB/T 34036-2016 2020-10-23 released 2021-02-01 implementation Issued by the National Energy Administration 1 Scope...1 2 Normative references...1 3 Terms and definitions...1 4 Basic test requirements...2 5 Thermal performance test...2 6 Air Pollutant Emission Test...3 7 Test report...4

Foreword

This document starts from the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" grass. This document replaces NB/T 34036-2016 "Test Methods for Small Biomass Boilers". Compared with NB/T 34036-2016, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows. a) Modified the basic test requirements (see Chapter 4, Chapter 4 of the.2016 edition); b) Modified the definition of "rated thermal power" (see 3.1, 3.1 in.2016 edition); c) Modified the test method and related requirements of the instrument (see 5.3, 5.3 of the.2016 edition); d) Modified the test report (see Chapter 7, Chapter 7 of the.2016 edition). This document was proposed by the China Rural Energy Industry Association. This document is under the jurisdiction of the Energy Industry Rural Energy Standardization Technical Committee (NEA/TC8). This document is organized and drafted by the Civil Cleaning Stove Professional Committee of China Rural Energy Industry Association. Drafting organizations of this document. Planning and Design Institute of the Ministry of Agriculture and Rural Affairs, Beijing Laowan Clean Heating Equipment Co., Ltd., State Grid Jibei Power Power Co., Ltd. Electric Power Research Institute, Agricultural Ecology and Resource Protection Station of the Ministry of Agriculture and Rural Affairs, Beijing Zhongyan Environmental Energy Environmental Technology Testing Center, Beijing University of Chemical Technology, Jilin Enric Energy Technology Development Co., Ltd., Tangshan Fengrun District Shenhuo New Energy Development Co., Ltd., Jiangsu Zhang Yuan Thermal Energy Technology Co., Ltd., Shijiazhuang Chunyan Heating Equipment Co., Ltd., Beijing Future Blue Sky Technology Co., Ltd., Shenghuo (Hubei) Agricultural Industry Technology Co., Ltd., Peking University, China Agricultural University, Beijing University of Aeronautics and Astronautics. The main drafters of this document. Tian Yishui, Xing Lili, Zhou Weiqing, Li Huibin, Yang Mingzhen, Xue Chunyu, Shan Yashun, Wang Changjun, Hu Guang, Li Fenglin, Zhang Jing, Gao Hongliang, Shen Guofeng, Zhou Yuguang, Li Xinghua, Ren Yawei, Liu Guangqing, Ren Yanbo, Wu Ting. This document replaces NB/T 34036-2016. The previous editions of this document and the documents replaced are as follows. --NB/T 34036-2016. --This is the first revision. Test method for small biomass boiler

1 Scope

This document specifies the thermal performance and air pollutant emission test methods of small biomass boilers (hereinafter referred to as boilers). This document is suitable for burning biomass briquettes, using water as the medium, with a rated thermal power of not less than 0.05MW and not more than 0.7MW, Small atmospheric hot water boiler with outlet water temperature not higher than 85℃. The small atmospheric pressure hot water boiler with biomass bundled fuel can be implemented with reference to this document.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated reference documents, Only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document file. GB 5468 Boiler smoke and dust test method GB/T 16157 Determination of particulate matter in exhaust gas from stationary sources and sampling method for gaseous pollutants HJ/T 42 Determination of nitrogen oxides in exhaust gas from stationary sources. Ultraviolet spectrophotometry HJ/T 43 Determination of nitrogen oxides in exhaust gas from stationary sources-Naphthylethylenediamine hydrochloride spectrophotometric method HJ/T 56 Determination of Sulfur Dioxide in Exhaust from Stationary Pollution Sources-Iodometric Method HJ 57 Determination of Sulfur Dioxide in Exhaust Gases from Stationary Pollution Sources Constant Potential Electrolysis Method HJ/T 373 Fixed pollution source monitoring quality assurance and quality control technical specifications HJ/T 397 Fixed source exhaust gas monitoring technical specification HJ/T 398 Determination of blackness of flue gas emitted by stationary sources. Ringelmann smoke blackness diagram method HJ 629 Determination of Sulfur Dioxide in Exhaust Gas from Stationary Pollution Sources Non-dispersive Infrared Absorption Method HJ 692 Determination of nitrogen oxides in exhaust gas from stationary pollution sources Non-dispersive infrared absorption method HJ 693 Determination of Nitrogen Oxides in Exhaust Gases from Stationary Pollution Sources Constant Potential Electrolysis Method NY/T 1879 Biomass solid briquette sampling method NY/T 1880 Biomass solid briquette fuel sample preparation method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Rated heating power The boiler can continuously produce heat per unit time when the boiler is at rated parameters, rated flow, using design fuel, and ensuring efficiency. 3.2 Heat input The total heat input into the boiler by the biomass briquettes. 3.3 Heat output The difference between the heat provided by the boiler through the hot water and the heat brought by the water entering the boiler. 3.4 Thermal efficiency The percentage of boiler output heat to fuel input heat at the same time is also called positive balance efficiency.

4 Basic test requirements

4.1 The testing agency for thermal performance and air pollutant emissions shall have corresponding qualifications. 4.2 The thermal efficiency is measured by the positive balance method. 4.3 The rated thermal power and thermal efficiency are the arithmetic average of the two test results. 4.4 Thermal performance and air pollutant emission tests are carried out at the same time. 4.5 The original test data and test report of the thermal performance and air pollutant emission test shall be archived by the testing unit for future reference.

5 Thermal performance test

5.1 Test preparation 5.1.1 The person in charge of the test shall be someone who is familiar with this document and has experience in boiler thermal testing. The person in charge of the test shall be based on the relevant provisions of this document. It is stipulated that the test outline shall be formulated according to the specific situation and the implementation of the test outline shall be organized. The test outline includes. a) Test purpose and task; b) Test requirements; c) Measurement items; d) Layout of measuring points and instruments and equipment used; e) Test personnel organization and division of labor; f) Test schedule and progress; g) Matters needing attention and others. 5.1.2 Before the test, check whether the operating conditions of the boiler and auxiliary equipment are normal. Any abnormality should be eliminated. 5.1.3 Install meters and test equipment in accordance with the requirements of the test program. 5.1.4 Before the formal test, a preliminary test should be carried out according to the test requirements and test content to comprehensively check whether the meter and the test equipment are correct. Often work, familiar with the test operation and the mutual cooperation of personnel. 5.2 Test requirements 5.2.1 The formal test should start after the boiler is adjusted to the test conditions and runs stably. 5.2.2 The test conditions of the boiler should meet the following requirements. a) The difference between the boiler outlet water temperature and the design value should not exceed ±5℃; b) The fluctuation of the rated heating power of the boiler during the test should not exceed 10%. 5.2.3 At the end of the test, the level of the fuel hopper, the thickness of the fuel layer, and the combustion conditions should be consistent with those at the beginning of the test. 5.2.4 During the test, the excess air coefficient, fuel supply, water inlet and outlet, fuel layer thickness, combustion conditions, etc. should be basically the same. 5.2.5 The inlet water temperature and outlet water temperature of the boiler shall be recorded every 5 minutes, and other items shall be recorded every 10 minutes. 5.2.6 Test times, time and error. a) The finalization test of the new product should be carried out twice under the rated heating state, and the number of tests for other purposes shall be negotiated with the user; b) The duration of each thermal performance test should not be less than 3h; c) The rated thermal power measured in the two tests should not be less than 97% of the nominal value; d) The difference in thermal efficiency between the two tests should not exceed 3%. 5.2.7 The instruments used in the test shall have a verification certificate issued by a legal metrological verification agency and shall be within the validity period of verification or calibration. Inside. The installation and use of the instrument should comply with its product manual and relevant regulations. The meter should be checked before and after the test. 5.2.8 The test environment should be 10℃～30℃, if it is an open-air boiler, it should avoid direct sunlight, wind speed greater than 5m/s or rain The test should be stopped every day. 5.2.9 For biomass sampling into the furnace, the amount of original sample collected for each test should not be less than 1% of the total fuel consumption, and the total sampling amount is quite large Less than 10 kg. Sampling should be carried out at the weighing location, and the sampling and preparation methods should be carried out in accordance with NY/T 1879 and NY/T 1880. 5.3 Test instrument and installation 5.3.1 The fuel consumption is measured by a platform scale, and the accuracy level of the platform scale is Class III. 5.3.2 The water output (or water intake) is measured with a calibrated water tank or a flow meter is installed on the boiler water inlet pipe. The accuracy of the flow meter The degree level should not be lower than 0.5. 5.3.3 The temperature measuring points of the thermometers for the outlet water temperature and the inlet water temperature should be arranged on the pipeline where the water temperature is relatively uniform, and the thermometer reading resolution It is 0.2°C. 5.3.4 For thermometers that measure the exhaust gas temperature, the accuracy level of the display meter shall not be less than 0.5.The measurement point of the exhaust gas temperature should be close to the end The distance of a section of heating surface should not be greater than 1 m. 5.3.5 The thermometer for measuring the ambient temperature should be placed near the boiler to be tested, and the reading resolution of the thermometer should be 0.2°C. 5.4 Calculation of test results 5.4.1 The rated thermal power is calculated according to formula (1). Where. Pn-rated thermal power, in megawatts (MW); Gz-total water output, in kilograms (kg); tcp-the average temperature of the total effluent, in degrees Celsius (°C); tjp-the average temperature of the total inlet water, in degrees Celsius (°C); T2-T1 - Test time, in seconds (s). 5.4.2 The thermal efficiency is calculated according to formula (2). Where. η-thermal efficiency; B - Biomass fuel consumption during the test period, in kilograms (kg); Qnet.v.ar - The received base low calorific value of biomass briquettes, in kilojoules per kilogram (kJ/kg).

6 Air pollutant emission test

6.1 The air pollutant emission test sampling should be carried out after the thermal performance test is started and the boiler is operating stably. 6.2 Sampling of air pollutant emissions should be carried out at the specified pollutant emissions test location according to the types of pollutants to be tested. Polluted If it is a waste treatment facility, it shall be tested at the exit of the treatment facility. The monitoring and sampling of atmospheric pollutants in the exhaust cylinder shall be in accordance with GB 5468, GB/T 16157 or HJ/T 397 regulations are implemented. 6.3 The testing of air pollutants shall be carried out in accordance with the requirements of HJ/T 373 for quality assurance and quality control. 6.4 Refer to Table 1 for test methods of air pollutant emission concentration.

7 Test report

The boiler test report is shown in Table 2.

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