What is the normal pressure of automotive air conditioning refrigerant?
1 Answers
The pressure of automotive air conditioning refrigerant varies under different conditions: 1. When the compressor is running at 1500 to 2000 rpm, the high pressure is approximately 1.5 to 2.0 MPa, and the low pressure is around 0.15 to 0.35 MPa. 2. In idle conditions, if the ambient temperature is high and under direct sunlight, the high pressure may be slightly higher, reaching about 2.5 to 2.8 MPa, but it generally does not exceed 3.1 MPa. Under normal circumstances, cars do not need to add refrigerant for 3 to 5 years. However, sometimes if the cooling effect of the refrigerant is poor, it may need to be replenished. After the air conditioner has been running normally for a while, if the air blowing on you feels cool and quickly reaches the set temperature, and the outdoor compressor operates intermittently like a refrigerator, it indicates normal functioning. Otherwise, it might be necessary to add refrigerant.