Standard No.:	SY/T 6381-2024
English Name:	Heat determination for heating furnace of the petroleum industry
Chinese Name:	石油工业用加热炉热工测定
Professional Classification:	SY    Professional Standard - Oil & Gas
Source Content Issued by:	Nation Energy Administration
Issued on:	2024-12-25
Implemented on:	2025-6-25
Status:	valid
Superseding:	SY/T 6381-2016 Heat determination for heating furnace of petroleum industry
Target Language:	English
File Format:	PDF
Word Count:	13500 words
Translation Price(USD):	405.0
Delivery:	via email in 1~5 business day

SY/T 6381-2024 Heat determination for heating furnace of the petroleum industry English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS E Professional standard of the People's Republic of China SY/T 6381-2024 Replaces SY/T 6381-2016 Heat determination for heating furnace of the petroleum industry 石油工业用加热炉热工测定 (English Translation) Issue date: 2024-12-25 Implementation date: 2025-06-25 Issued by National Development and Reform Commission, P.R.C Contents Foreword 1 Scope 2 Normative References 3 Terms and Definitions 4 General Principles and Requirements 5 Installation Requirements 6 Marker Content 7 Fabrication and Installation 8 Maintenance and Management Appendix A (Informative) Pipeline Marker Reference Forms and Specifications Thermal Measurement of Heaters Used in Petroleum Industry 1 Scope This document specifies the thermal test methods and calculation methods for heaters used in the petroleum industry. This document is applicable to the thermal measurement of heaters in oil and gas fields and oil and gas pipeline transportation systems. 2 Normative References The following documents contain provisions which, through reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 213 Determination method of calorific value of coal GB/T 384 Determination method of heat value of petroleum products GB/T 474 Method for preparation of coal samples GB/T 11062 Natural gas — Calculation of calorific value, density, relative density and Wobbe indices GB/T 13610 Analysis of natural gas composition — Gas chromatography GB/T 33754-2017 Energy consumption test and calculation methods for gas field production system 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 heater of petroleum industry Special equipment used in oil and gas fields and oil and gas pipeline transportation systems for heating media such as crude oil, natural gas, water, and their mixtures, referred to as "heater". Note: Heaters commonly used in the petroleum industry mainly include direct-fired fire-tube heaters, indirect-fired fire-tube heaters (water bath heaters), tubular heaters, vacuum phase change heaters, electric heaters, etc. 3.2 as received basis Basis based on the fuel in the received state. 3.3 heat supply Heat supplied to the heater per unit time. 3.4 total supply energy Sum of the heat supply to the heater and the electrical energy consumed by auxiliary equipment per unit time. 3.5 input heat of heated medium Heat brought in by the heated medium input to the heater relative to the reference temperature per unit time, referred to as "input heat". 3.6 output heat of heated medium Heat carried out by the heated medium output from the heater relative to the reference temperature per unit time, referred to as "output heat". 3.7 available heat output Heat obtained by the heated medium from the total supply energy of the heater. 3.8 heating furnace efficiency Ratio of the available heat output of the heater to the heat supply within the same period, expressed as a percentage. 3.9 direct procedure Method for determining heater efficiency by directly measuring and calculating the heat supply and the available heat output of the heater. 3.10 indirect procedure Method for determining heater efficiency by measuring various combustion product heat losses and the heat dissipation loss of the heater. 3.11 heating furnace synthesis efficiency Ratio of the available heat output of the heater to the total supply energy within the same period, expressed as a percentage. 4 Symbols and Units The symbols and their units listed in Table 1 apply to this document. 5 General Principles 5.1 Heater thermal measurement can be carried out at different levels. Test requirements for each level are specified in Appendix A. 5.2 For heaters where the heated medium is gas, the indirect procedure should be used. 5.3 Calculation benchmarks are: ——Reference temperature: ambient temperature; ——Reference pressure: atmospheric pressure; ——Fuel calorific value benchmark: low calorific value as received basis. 6 Test Requirements 6.1 Testing shall commence after the heater's thermal condition has stabilized and 1 hour after adjusting to the test condition. Thermal condition stabilization of the heater means that the average values of the main thermal parameters fluctuate within the permissible range. The time required for thermal stabilization, counted from cold start ignition, is specified as follows: a) For unlined liquid fuel heaters (oil-fired heaters), gaseous fuel heaters (gas-fired heaters), and electric heaters: not less than 1 hour; for solid fuel heaters (coal-fired heaters): not less than 4 hours. b) For heaters with linings: not less than 8 hours; for heaters with heavy refractory linings: not less than 25 hours. 6.2 For Level 1 and Level 2 tests, the duration of each test for coal-fired heaters shall not be less than 4 hours; for oil-fired, gas-fired, and electric heaters, the duration of each test shall not be less than 2 hours. For Level 3 tests, the duration of each test shall not be less than 1 hour. 6.3 At the end of the test, the coal level in the coal hopper of a coal-fired heater shall be consistent with the level at the start of the test. If inconsistent, a correction shall be made. 6.4 The instruments and meters used for testing shall be verified/calibrated by legal metrological departments and be within the validity period. Requirements for the accuracy class of instruments and meters are specified in Appendix B.