This standard specifies the terms and definitions, general requirements, quality index and test methods, judgment and handling, inspection interval and sampling, mixing, recycling and disposal of various types of heat transfer fluids used in heat transfer fluids boilers and their heating systems, and the cleaning, replacement and disuse of heating systems.
This standard is applicable to heat transfer fluids with various heat transfer fluids boilers as heating equipment and indirect heating as the purpose, and is not applicable to heat transfer fluids with only freezing and cryogenic cooling as purposes.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 259 Petroleum products - Determination of water-soluble acids and alkalis
GB/T 261 Determination of flash point - Pensky-Martens closed cup method (GB/T 261-2008, ISO 2719: 2002, MOD)
GB/T 265 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T 268 Petroleum products - Determination of carbon residue - Conradson method
GB/T 1884 Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method (GB/T 1884-2000, eqv ISO 3575: 1998)
GB/T 1885 Petroleum measurement tables (GB/T 1885-1998, eqv ISO 91-2: 1991)
GB/T 4756 Petroleum liquids - Manual sampling (GB/T 4756-1998, eqv ISO 3170: 1988)
GB/T 6536 Petroleum products - Determination of distillation (GB/T 6536-1997, eqv ASTM D86-95)
GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-2008, ISO 3696: 1987, MOD)
GB/T 11133 Liquid petroleum products - Determination of water - Karl Fischer reagent method
GB/T 11137 Black petroleum products - Determination of kinematic viscosity (reverse-flow method) and calculation of dynamic viscosity
GB/T 16483 Safety data sheet for chemical products - Content and order of sections
GB/T 17144 Petroleum products - Determination of carbon residue - Micro method (GB/T 17144-1997, eqv ISO 10370: 1993)
GB/T 23800 Heat transfer fluids - Determination of thermal stability (GB/T 23800-2009, DIN 51528: 1998, MOD)
GB 23971-2009 Heat transfer fluids (DIN 51522: 1998, MOD)
SH/T 0170 Petroleum products - Determination of carbon residue - Electric furnace method
SH/T 0246 Determination method of water content in light petroleum products (Coulometric method)
SH/T 0558 Petroleum fractions - Determination of boiling range distribution (Gas chromatography)
SH/T 0604 Crude petroleum and petroleum products - Determination of density - Oscillating U-tube method
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1
heat transfer fluids
a general term of organic substances being used as heat transfer medium
Note: Heat transfer fluids includes all organic media for indirect heat transfer purposes, such as heat transfer fluids, heat oils, organic heat transfer carriers, and heating media. It may be classified into synthetic heat transfer fluids and mineral heat transfer fluids according to chemical composition, and be classified into vapour phase heat transfer fluids and liquid phase heat transfer fluids according to the boiling range.
3.2
unused heat transfer fluids
the heat transfer fluids that has not been used in the heating system
3.3
heat transfer fluids in use
the heat transfer fluids that has been used in the heating system
3.4
synthetic heat transfer fluids
a kind of heat transfer fluids with certain chemical structure and defined chemical name, which is produced by chemical synthesis process
Note: The synthetic heat transfer fluids may be classified into ordinary synthetic type and synthetic type with special high thermal stability according to maximum permitted bulk temperature.
