What Causes Ice Formation in Truck Air Conditioning Pipes?
1 Answers
The reason for ice formation inside the pipes is the presence of air in the air conditioning system. Below is relevant information: 1. Low evaporation temperature: When the evaporation temperature is very low, moisture in the air can freeze, causing ice blockage in the air conditioning system. 2. Insufficient refrigerant: Ice can also form outside the air conditioning pipes when there is insufficient refrigerant. 3. Dirty or clogged evaporator: Ice formation in the pipes can also occur when the evaporator or return air filter is dirty or clogged. 4. Temperature imbalance: The refrigerant (in gaseous state) turns into liquid after passing through the compressor. During its transportation through the pipes (narrow pipes, liquid pipes), the vaporization process absorbs heat, lowering the temperature around the pipes and causing moisture in the air to condense and freeze, forming frost or ice when the temperature drops below 0°C. Adjusting the temperature too high or too low can lead to frost or ice formation. 5. Overly cold refrigerant returning to the compressor: The cause of frost formation on the thick pipe is excessively cold refrigerant returning to the compressor. This can happen due to too much refrigerant or too low indoor temperature, preventing the refrigerant from fully evaporating into gas in the indoor unit's evaporator before returning to the compressor. This results in frost on the thick pipe and liquid compression, which can damage the compressor over prolonged operation.
