Many friends ask Brother Tea whether the size of the air volume and temperature will affect the fuel consumption when the air conditioner is turned on? How will the air volume at the same temperature affect the fuel consumption? Which is more fuel-efficient with low temperature and small air volume or high temperature and large air volume? In view of this series of questions, Brother Tea will first take you to understand the types and working principles of air conditioners.
Types of car air conditioners
Automobile air conditioners can be divided into two types: fixed air conditioners and variable air conditioners, manual air conditioners must be fixed rows, and automatic air conditioners have two types: fixed and variable rows. Under normal circumstances, we can rely on the sound to distinguish the type of automatic air conditioner, when we press the "A/C" key, listen carefully and hear the inconspicuous "click" sound, and there is a more obvious noise of the air conditioning compressor starting, and the instantaneous speed will have a slight change, this is the fixed exhaust air conditioner;
1. Fixed-row air conditioning
No matter what kind of temperature and air volume is chosen, the air conditioning system will run at full capacity, and the cold air will be directly discharged when the temperature is low, and the natural air can be mixed to reach the required temperature when the temperature is slightly higher, in fact, the energy consumption is not reduced because of the temperature reduction. So whether you adjust the temperature high or low, the compressor output power will not change due to the change in the temperature of the air conditioner.
2. Variable exhaust air conditioning
Variable displacement air conditioner is relatively intelligent, it can adjust the working intensity of the compressor according to the need, and does not need to work at a very low temperature without load, so as to ensure energy saving. That is to say, the output power of the compressor changes with the temperature change of the air conditioner, the lower the temperature, the greater the output power of the compressor, and the higher the temperature, the smaller the output power of the compressor.
3. Tea brother summary
Therefore, in principle, the changes in temperature and air volume are easy to affect the fuel consumption of variable exhaust air conditioning models, but almost will not affect fixed exhaust air conditioning models.
Fixed-exhaust air conditioning test
1 Close
With the air conditioner idling in place and the air conditioner turned off, the manual air-conditioned model has an instantaneous fuel consumption of 0.9 L/h and a load of 20.8 percent.
2. Turn on and adjust to the lowest temperature and minimum wind
After turning on the air conditioner, adjust to the lowest temperature and minimum wind, the instantaneous fuel consumption rises to 1.1L/h, and the load also rises to 28.6%, which obviously increases the load of the vehicle a lot by using the air conditioner.
3 minimum wind, turn up to 26°C
Maintaining the minimum air volume, the temperature is raised to 26°C, the instantaneous fuel consumption display is still 1.1L/h, and the load value is also reduced to 27.5%, a decrease of 1%, it seems that the extreme change in temperature does not have much impact on the fixed exhaust air conditioner.
426°C, the air volume is adjusted to the maximum
Maintain a temperature of 26°C, adjust the air volume to the maximum, the instantaneous fuel consumption display is still 1.1L/h, but the load increases to 31%, it can be seen that the air volume has a greater impact on the load.
5. The maximum air volume and temperature are adjusted to the lowest
Under extreme low temperature and strong winds, the instantaneous fuel consumption is still stable at 1.1L/h, and the load increases to 32.2%, with little overall change.
Variable exhaust air conditioning test
1 Close
When idling and the air conditioner is turned off, the instantaneous fuel consumption of the automatic variable air conditioner model is displayed as 0.5 L/h and the load value is 12.9%.
2. Turn on and adjust to the lowest temperature and minimum wind
After turning on the air conditioner, adjust to the lowest temperature and minimum wind, the instantaneous fuel consumption rises to 1.0L/h, and the load value also rises to 22.4%, which seems to increase the load of the vehicle a lot by using the air conditioner.
3 minimum wind, turn up to 26°C
Maintaining the minimum air volume, the temperature is raised to 26°C, the instantaneous fuel consumption display is reduced to 0.8L/h, and the load value is also reduced to 18.4%, it seems that the extreme change in temperature has a certain impact on the load and fuel consumption of the variable exhaust air conditioner.
426°C, the air volume is adjusted to the maximum
Maintaining a temperature of 26°C and adjusting the air volume to the maximum, the instantaneous fuel consumption rises to 1.2L/h, and the load value also increases to 28.2%, which shows that the air volume has a greater impact on the variable exhaust air conditioner.
5. The maximum air volume and temperature are adjusted to the lowest
Under extreme low temperature and strong winds, the instantaneous fuel consumption increases to 1.3L/h, and the load value increases to 28.6%, with little overall change.
Brother Cha concluded
The output of the fixed exhaust air conditioner is relatively fixed, so the data fluctuation is not too large under different working conditions. The output of the variable exhaust air conditioner is more intelligent, and the change in temperature has a certain impact on the overall load of the vehicle, but the impact is not large; and the adjustment of the air volume is very direct to the change of the vehicle load, and the impact is also larger; so it can be concluded that the influence of temperature on fuel consumption is less than the impact of air volume on fuel consumption.