GB/T 35075-2018 (English Version)

Standard No.: GB/T 35075-2018
Language: Chinese, Available in English version
Release Date: 2018
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 35075-2018

Scope: This standard specifies the conditions, requirements, contents and methods for energy-saving tests on gas burners. This standard applies to general industrial gas burners, but not to non-oxidizing burners, regenerative burners, self-preheating burners, high-speed burners, porous media burners, civil burners and other special burners.

Introduction

Interpretation of GB/T 35075—2018 Gas Burner Energy Saving Test Rules

Background of Standard Formulation

As an important equipment for energy conversion and utilization, the energy efficiency of gas burners is directly related to resource conservation and environmental protection. The formulation of GB/T 35075—2018 "Gas Burner Energy Saving Test Rules" aims to standardize the energy-saving test methods of gas burners and ensure the efficient operation of products under different load rates.

Technical Evolution Analysis

With the improvement of environmental protection requirements and the increasing importance of energy efficiency, this standard introduces more precise test conditions and technical requirements. In particular, the provisions for key indicators such as combustion efficiency and volumetric heat intensity reflect the industry's technological progress in energy efficiency optimization.

Technical indicators	Definition	Test requirements	Standard values
Combustion efficiency	The percentage of heat actually released after fuel combustion to the heat released after complete combustion	≥99.9% or combustible content in flue gas ≤0.05%	≥99.9%
Volume heat intensity	The amount of heat released per unit furnace effective volume per unit time	Under load rate 100%, (1±0.1) MW/m³	1 MW/m³
Excess air coefficient	The percentage of the actual air mass supplied for burning each kilogram of fuel to the air mass required for theoretical complete combustion	Test at different load rates and record the value under stable state	-

Test conditions and requirements

Gas burnerEnergy-saving test needs to be carried out under specific conditions, including:

Test fuel types: natural gas, liquefied petroleum gas, coke oven gas, etc.
Environmental conditions: Indoor temperature range 5~35℃, CO content <0.002%, CO₂ content <0.2%
Test equipment accuracy requirements: fuel calorific value (±0.5%), flow measurement (±0.5% full scale), pressure sensor (±1% full scale)

Implementation suggestions

In order to ensure the accuracy and reliability of the test results, it is recommended:

Sampling and analysis of the fuel before testing, including gas composition, relative density and lower calorific value
Tests are performed at different load rates (100%, 80%, 70%, 50%, 30%)
Use a combustion efficiency meter or flue gas analyzer to monitor flue gas composition to ensure that the standard requirements are met
Record and analyze the furnace temperature fluctuation range to ensure the test data is under thermal stability

Summary and Outlook

GB/T 35075-2018 provides a scientific basis and standardized process for energy-saving testing of gas burners. With the development of energy technology in the future, it is recommended to further optimize the test methods and introduce more intelligent equipment to improve test efficiency.

GB/T 35075-2018 Referenced Document

GB/T 11062 Natural gas—Calculation of calorific values, density, relative density and Wobbe indices from composition*， 2020-09-29 Update
GB/T 13610 Analysis of natural gas composition—Gas chromatography*， 2020-09-29 Update

GB/T 35075-2018 history

2018 GB/T 35075-2018 Energy saving test rules for gas burner