This standard specifies terms and definitions, types and basic parameters, requirements, test methods, inspection rules, marking, packaging, transport and storage of unit coolers for refrigeration (hereinafter referred to as cooler).
This standard is applicable to coolers used in refrigerated room for materials to be chilled, in that for materials to be frozen, and in freezers. It may apply by reference for coolers for other purposes.
This standard is applicable to coolers using R134a, R22, R404A and ammonia refrigerants as media as well as those coolers using water, glycol and other refrigerating media as media. It may apply by reference for coolers using other refrigerants as media.
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 of the normative document referred to applies.
GB/T 191 Packaging - Pictorial marking for handling of goods (GB/T 191-2008; ISO 780:1997, MOD)
GB/T 5773-2004 The method of performance test for positive displacement refrigerant compressors (ISO 917: 1989; MOD)
GB/T 6388 Transport package shipping mark
GB/T 10870 The methods of performance test for positive displacement & centrifugal water-chilling units and heat pump
GB/T 13306 Plates
JB/T 2379 Metallic tube electric heating elements
JB/T 4088 Daily-use metallic tube electric heating elements
JB/T 4330-1999 Determination of noise emitted by refrigerating and air conditioning equipment
JB/T 4750 Pressure vessels for refrigerant equipment
JB/T 7249 Refrigerating equipment - Terms
JB/T 9058 Measuring method of refrigerating equipment cleanliness
JB/T 10562 Technical specification for general purposes axial fans
JB/T 10563 Technical specification for general purposes centrifugal fans
3 Terms and definitions
For the purposes of this standard, the terms and definitions given in GB/T 7249 and the following apply.
3.1
unit coolers for refrigeration
heat exchanger with refrigerant or refrigerating medium flowing inside the pipe and air flowing outside the cooling pipe
3.2
ammonia air-cooler
GB/T 25129-2010 The following standards are cited：
