Global one-stop procurement platform for industrial spare parts.
English| Español| عربي
Catalogue

What common sense do you need to know about automotive air conditioning refrigerants

What common sense do you need to know about automotive air conditioning refrigerants Air conditioning refrigerant, also known as refrigerant or refrigerant, is one of the greatest inventions in human history. Its contribution to human normal life is second only to Hou Yi shooting the sun. Types of automotive refrigerants Generally speaking, there are two types of automotive air conditioning refrigerants, one is called CFC12 (dichlorodifluoromethane), also known as R12; the other is called HFC134a (1,1,1,2-tetrafluoroethane), Also known as R134a. Because R12 is not friendly to the environment, all countries in the world basically stop using it in car air conditioners. In 1987, 26 Member States of the United Nations signed the Montreal Protocol for the Control of Ozone Depleting Substances, referred to as the Montreal Protocol. In this protocol, developed countries and developing countries make separate commitments to stop using R12 as an air-conditioning refrigerant in the future and look for new alternatives. This alternative is R134a, which is widely used today. According to the commitment, new cars that have been off the assembly line since 2002 no longer use the R12 air-conditioning system, but adopt the more environmentally friendly but costly R134a system. R134a was originally developed by DuPont. Its biggest advantage is that the ODP value is zero (ODP refers to the potential for damage to the ozone layer). In addition, R134a does not contain chlorine atoms, has good safety performance, physical properties are relatively close to R12, so the modification of the refrigeration system is easier; its thermal conductivity is also better than R12, which can reduce the amount of refrigerant. Currently, more than 50% of R134a is used as a refrigerant worldwide in automotive air conditioners. With the explosive growth of car ownership (especially in China), the market demand for R134a will be quite large. How often is the refrigerant added How often is the refrigerant for car air conditioning added? The answer is: It is recommended to check every two years, but this has no fixed rules, because under normal circumstances the refrigerant will not fail, it can only leak. Due to the complexity of driving conditions, the piping of the air conditioning system under various vibrations may appear to be tightly sealed, resulting in refrigerant leakage. Therefore, there is actually no fixed statement about how often to add refrigerant. It can only be said that under normal wear and tear, inspections and supplements are conducted every two years. How to judge refrigerant leakage It can be said that as long as the refrigerant exists, leakage may occur. In the automotive air conditioning system, the entire refrigerant circulation down, compressors, evaporation tanks, condensers, high-pressure pipes, low-pressure pipes, etc., may appear to be tightly sealed, causing refrigerant to escape. So, how can we tell if the refrigerant has escaped? One of the most common methods is to check for oil leaks. In the air-conditioning system, in addition to the refrigerant, there is also a refrigeration oil. The function of the refrigerating oil is to lubricate the moving parts of the compressor, various bearings, and act as an oil seal. In the air conditioning cycle, part of the freezing oil will enter the pipeline together with the refrigerant. If there are signs of oil leakage at a certain location, then there is also refrigerant leakage. Another method is to use the observation hole on the air-conditioning drying bottle or pipeline to judge. The drying bottle is a component that filters the moisture and impurities of the refrigerant, and has an observation hole on the top. In this observation hole, the flow of refrigerant can be seen. In many vehicles now, the drying bottle does not exist alone, but is integrated with the radiator or condenser, but there will still be an observation hole in the pipeline. Start the engine, turn on the cooling, and the fan is on the maximum. If you see the milky white refrigerant in the observation hole, it means that there are bubbles and the refrigerant is insufficient; if you can see nothing and there is no cold air at the air outlet, it means that the refrigerant has been seriously leaked. In addition, after the flame is turned off, if no bubbles appear in the observation hole, then the refrigerant may be excessive. Finally, in the 4S shop or repair shop, the refrigerant pressure gauge is used to test the high pressure and low pressure readings, and it can also determine whether the refrigerant is leaking. How to add refrigerant Generally, refrigerants are added without using our own hands. But here is the simple popularization process of Turbo Brother, which makes everyone know. If you have the necessary tools, you can add them yourself. Here is a simple DIY addition. In simple terms, adding refrigerant is divided into two types: injection from the high-pressure side and injection from the low-pressure side. In theory, as long as the operation is reasonable, you can raise from either end. However, filling from the high-pressure side can easily cause refrigerant to escape. The filling tools include a set of refrigerant pressure gauges (including adapters and hoses), refrigerant bottles (with new refrigerant), and bottle openers (connecting refrigerant bottles). Connect the refrigerant bottle with a bottle opener and connect it to the refrigerant pressure gauge through a hose. The refrigerant pressure gauge is connected to the high-pressure interface or the low-pressure interface of the air conditioning system. Note that when connecting a high-pressure or low-pressure interface, escape of refrigerant should be avoided. Finally, turn on the maximum air-conditioning cold wind, let the compressor work, open the valve on the refrigerant pressure gauge, and let the refrigerant flow. Observe the high-pressure or low-pressure reading on the pressure gauge, after reaching the appropriate value, close the valve to stop filling. If you accidentally add more, you can release some properly. During this process, pay attention to emptying the air in the filling tool. The air cannot be compressed by the compressor, which will seriously affect the cooling effect. Precautions Since most cars are now air-conditioned with the R134a system, when buying refrigerants, don’t try to buy fakes cheaply. Some fake R134a refrigerants actually contain R12 refrigerant. Using R12 in the R134a system will seriously damage the air conditioning system. Moreover, if you need to replace the new refrigeration oil, also make sure that the refrigeration oil is compatible with R134a. Using inferior or substandard refrigeration oil will damage the compressor.

Recent related posts

Customers frequently viewed

New In stock for sale, IWAYA DENKI Water Pump 25CJT0752

IWAYA DENKI Water Pump 25CJT0752
US$2307.69
New In stock for sale, Panasonic Servo Motor MHMF022L1V2M

Panasonic Servo Motor MHMF022L1V2M
US$653.85
New In stock for sale, Honeywell Solenoid Valve VE4025B1045

Honeywell Solenoid Valve VE4025B1045
US$334.62
New In stock for sale, ROTEN Mechanical Seal 8E5K-22-X

ROTEN Mechanical Seal 8E5K-22-X
US$384.62
New In stock for sale, AirTac Solenoid Valve 2KSH030-06-AC24V

AirTac Solenoid Valve 2KSH030-06-AC24V
US$47.70
New In stock for sale, TOYOOKI Vane Pump HVP-FEE1-F108-75R-A

TOYOOKI Vane Pump HVP-FEE1-F108-75R-A
Contact Us
New In stock for sale, DIODES IC Integrated Circuit Chip AP2311AMP-13

DIODES IC Integrated Circuit Chip AP2311AMP-13
US$6.46
New In stock for sale, CKD Air Cylinder SSD2-L-16D-10-N-W1

CKD Air Cylinder SSD2-L-16D-10-N-W1
Contact Us
New In stock for sale, Allen-Bradley Contactor 1502-V8DXDD-3

Allen-Bradley Contactor 1502-V8DXDD-3
Contact Us
New In stock for sale, SUNX Sensor FT-AL05

SUNX Sensor FT-AL05
US$195.50
New In stock for sale, Siemens communication Module 6GK7443-1EX30-0XE0

Siemens communication Module 6GK7443-1EX30-0XE0
US$8483.55
New In stock for sale, Yaskawa Servo Motor SGMP-01A3TM11

Yaskawa Servo Motor SGMP-01A3TM11
Contact Us
New In stock for sale, Rechner Sensor KAS-70-A13-K-PTFECapacitive proximity sensor

Rechner Sensor KAS-70-A13-K-PTFECapacitive proximity sensor
US$69.23
New In stock for sale, PANASONIC Capacitor 63V 0.0027UF

PANASONIC Capacitor 63V 0.0027UF
US$7.69
Submitted Successfully
Submission Failed
© eCommerce. 2017-2024. All Rights Reserved
Press and drag the mouse to start taking a screenshot