This part of JB/T 7659 specifies the types and basic parameters, requirements, test methods, inspection rules, marking, packaging and storage of fin type heat exchanger (hereinafter referred to as "heat exchanger") for freon refrigerant equipment, including fin type evaporator (hereinafter referred to as "evaporator") and fin type condenser (hereinafter referred to as "condensers").
This part is applicable to fin type heat exchanger for refrigeration and air-conditioning units using R22, R134a, R404A, R407C and R410A as refrigerants. It may serve as a reference for fin type heat exchangers using other types of refrigerants.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 699 Quality carbon structure steels
GB/T 700 Carbon structural steels
GB/T 708 Dimension, shape, weight and tolerance for cold-rolled steel plates and sheets
GB/T 716 Cold-rolled carbon structural steel strips
GB/T 1527 Drawn tube of copper and copper alloys
GB/T 1804 General tolerances－Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 2040 Copper and copper alloy sheet
GB/T 2059 Copper and copper alloy strip
GB/T 2518 Continuously hot-dip zinc-coated steel sheet and strip
GB/T 3880.1 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery
GB/T 3880.3 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions
GB/T 5117 Carbon steel covered electrodes
GB/T 6418 Copper base brazing filler metals
GB/T 6893 Aluminium and aluminium alloy cold drawn (rolled) seamless tubes
GB/T 8162 Seamless steel tubes for structural purposes
GB/T 10046 Silver brazing filler metals
GB/T 10079-2001 Single-stage reciprocating refrigerant compressors
GB/T 13306 Plates
GB/T 16488 Water quality - Determination of petroleum oil, animal and vegetable oils - Infrared photometric method
JB/T 9058 Measuring method of refrigerating equipment cleanliness
NB/T 47012 Pressure vessels for refrigerant equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
fin type evaporator
a type of heat exchanger which serves as a component in a refrigeration condition system for vaporizing the refrigerant liquid through heat absorption, and is used as a condenser when the heat pump is in operation; the fins are sleeved into the tube bundle at a specified distance, and the tube bundle are tightly combined by the tube expansion method; the evaporator consists of fins, tube bundle, side plates, liquid distributor (including distribution tubes), headers, and the like.
3.2
fin type condenser
a type of condenser (belonging to a type of heat exchanger), which serves as a component in a refrigeration condition system for liquefying the refrigerant vapor via heat release realized by forced ventilation, and is used as an evaporator when the heat pump is in operation; the fins are sleeved into the tube bundle at a specified distance, and the tube bundle are tightly combined by the tube expansion method; the evaporator consists of fins, tube bundle, side plates, liquid distributor (including distribution tubes), headers, and the like.
4 Type, model and basic parameters
4.1 Type
The heat exchangers are divided into forced ventilation and direct evaporation heat exchanger and condensing fin tube heat exchanger.
4.2 Model
See Annex A for the model preparation method of heat exchanger.
4.3 Basic parameters
4.3.1 Thermal parameters
The heat transfer coefficient of the heat exchanger under nominal refrigeration conditions shall be in accordance with those specified in Table 1.
JB/T 7659.4-2013 The following standards are cited：
JB/T 7659.4-2013 Cited by the following standards：
