This standard specifies terms and definitions, classification and labeling, requirements, test methods, inspection rules as well as labeling, packaging, transport and storage of air cooling and air heating coils (hereinafter referred to as air heat exchanger).
This standard is applicable to air heat exchangers that cools and heats the forcibly flowing air by using water, ethylene glycol solution and steam as the medium for cooling or heating.
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 1047 Pipework components - Definition and selection of DN (nominal size)
GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without individual tolerance indications
GB/T, 1958 Geometrical product specification (GPS) rules for inspection of form and position tolerances
GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 1: Parallel internal and taper external threads
GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads - Part 2: Taper internal and external threads
GB/T 9119 Slip-on-welding plate steel pipe flanges with flat face or raised face
GB/T 16803 Equipment of heating, ventilating, air conditioning and air cleaning terminology
JG/T 21 Test methods for determining the performance of air cooling and air heating coils
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in GB/T 16803 and the following apply.
