Introduction to automotive refrigerants and answers to frequently asked questions
Today I will introduce to you the car refrigerant. How often do you change it? As the temperature rises, car air conditioners are slowly beginning to be used by people. Does the air conditioner that have been out of service for a long time still maintain good cooling? The effect? If your air conditioner no longer has a cooling function, then it may be time to change your own refrigerant. The wind blowing on your body after the air conditioner is normally turned on for a period of time will feel very cold and can quickly reach the set temperature. The outdoor compressor can be like electricity. The refrigerator works for a while and stops for a while, which indicates that it is normal. How often should the car refrigerant be changed? Let's take a look with the editor.
Introduction to automobile refrigerants: Introduction
The so-called automobile air-conditioning refrigerant is usually called Freon, which is also called 'refrigerant' or It is called 'refrigerant' and is divided into environmental protection (R134a) and non-environmental protection (mainly F12). The refrigerant pressure gauge is also called a refrigerant gauge or a fluorine gauge. It is used to measure the current pressure of the refrigeration system. It is mainly used to detect the pressure value of the refrigerant at different stages of the system, and the operating conditions of the user holding the equipment. At present, the accuracy requirement of the refrigerant pressure gauge in our country is 2.5.
1. When the compressor is 1500~2000rpm, it is normal that the high pressure (discharge pressure) is about 1.5~2.0 mpa, and the low pressure (suction pressure) is about 0.15~0.35 mpa. Specifically, it depends on the matching of the air conditioning systems of different vehicles and the ambient temperature.
2. In idling conditions (engine 700~900rpm), if the ambient temperature is high, such as under direct sunlight in summer, the high pressure may be slightly higher, the highest can reach about 2.5~2.8 mpa, but generally Will not exceed 3.1 mp.
How does automobile air-conditioning refrigerant circulate:
Frequently Asked Questions
1. After the automobile air-conditioner is used for a period of time, often There will be a smell similar to mildew and smoke;
2. When cooling or heating, the air blown out from the tuyere is not fresh, and people will feel the nasal cavity if they stay in the car for a long time. , Tracheal discomfort;
3. These are all caused by the peculiar smell of the car air conditioner. Then, why does the car air conditioner produce peculiar smell?
Reason
1. When the air-conditioning system is running, the water vapor in the air forms condensate on the surface of the air-conditioning condensing evaporator, and part of the water is turned off in the air-conditioning It will then remain in the evaporator and air-conditioning pipeline. These waters combine with microorganisms and pollutants in the air, and become breeding grounds for inoculum, Aspergillus, Penicillium, LP bacillus and mites in the humid, warm and dark air-conditioning system.
2. Nicotine produced by drivers smoking in the car
3. The smell of rubber, plastic and leather inside the car
4. Outside air Smoke, dust and exhaust gas in the air enter the car.
These peculiar smells will not only cause breathing difficulties and reduced immunity, but also make people feel irritable, reduce people's judgment and memory, and cause traffic accidents in severe cases. Bacteria, molds and viruses blown out of the air-conditioning pipes threaten the health of drivers and passengers at all times. Therefore, the cleaning and maintenance of the car's air-conditioning system is very important.
How does the car air-conditioning refrigerant circulate: maintenance
It is actually very simple to judge whether the air-conditioning system is working well. If the air-conditioning is found to be poorly cooled, the air volume is small , Or simply not refrigerating, etc., you need to check whether the various components are operating normally and whether there is a lack of condensate. The condensing agent must be added in accordance with the model on the vehicle manual. These can be done in a professional store. For our car owners, it is worth noting that the air-conditioning filter element should be replaced regularly. Generally, when driving in urban road conditions, we need to replace the air-conditioning filter element for about 3,000 kilometers. This will not only make the air intake system cleaner, but also avoid the air conditioning. The clogging of the filter element causes the cooling capacity to decrease.
In summer, the temperature difference between inside and outside of the car is large. When entering the car, it is not advisable to turn on the air conditioner to a low temperature. You can use natural wind to blow away the car first. Do not close all the windows of the car and turn on the air conditioner. After the body gradually adapts, adjust the temperature of the air conditioner to the required temperature and close the windows. In this way, our body will not cause discomfort due to the sudden decrease in external temperature.
The temperature of the air conditioner is not as low as possible. The most comfortable temperature for the human body is about 23 degrees Celsius. In the sunny afternoon in summer, the air conditioner should not be too low. It not only resists the hot summer sunlight, but also ensures that the temperature of the environment where the human body is not too low, which leads to 'air conditioning disease'. It also responds to the national call for energy conservation, emission reduction, and low-carbon environmental protection.
When the air conditioner is turned on, passengers are better not to smoke in the car, because when the air conditioner is turned on, the air in the car circulates in a relatively closed environment, first of all it is not easy to smoke Secondly, the tiny particles in the smoke will adhere to the air-conditioning air intake filter, causing long-lasting odors in the car. Regular professional air-conditioning system cleaning and sterilization and deodorization maintenance.
After reading the introduction of the editor, do you have any questions about how the car air-conditioning refrigerant is circulated? I have a certain understanding! So, do you like the content knowledge recommended by the editor today? The editor thinks that everyone must have a good understanding of the content and knowledge, and it will be of great help to us. Finally, I hope that the introduction of the editor can help everyone.
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