Although there are many benefits to tire filling with nitrogen in front of Xiaobian, are these benefits real? In order to confirm these benefits, Xiao Bian also began to search for some experimental data on the Internet. After reading this experiment, Xiao Bian raised some doubts again. Although this experiment is very serious and the data is very rich, it still lacks some theoretical analysis.
In practice, there are many factors that affect the experimental results. If these factors cannot be excluded, the final results of the experimental tests may be greatly reduced. These are the biggest factors affecting the experimental results: 1. The timing of the exhaust; 2. The pressure gauge used; 3. The area and location of the experiment; 4. The purity of nitrogen.
First, the timing of the exhaust
Although the tire's original gas was emptied, it was emptied when it was cold in the morning. When the temperature is low, the water's melting point in the air is low, and the inner wall of the tire will condense. You cannot discharge this water (you can find the inner wall of water on the tire). The correct method of exhaustion is to exhaust as much heat as possible after exhausting the tires. This problem, the experimenter did not pay attention. Although you used nitrogen at the time of the experiment, nitrogen was not completely discharged and this experiment was equivalent to doing it in white.
Second, the pressure gauge used is not standardized
The pressure gauge used by the experimenter is too simple. Although his pressure gauge is digitally displayed, only two decimal places are displayed. It can be said to be a very simple gauge. As with the Ford's own tire pressure display (only one decimal), it is simply not accurate enough to be able to perform this experiment. By observing his experimental data, it was found that all digits are not 0 or 5 behind and cannot be well calculated using experimental data. Let's take a look at his experimental data: Cold tyre pressure 2.15, tyre temperature 13 degrees, 120 yards per hour running 50 km tyre temperature should also increase by 10 degrees. Even with ideal gas, the tire pressure calculated by the formula will increase by 0.075. Unsatisfactory gas, such as air, can only increase more, not less, which is the focus of my analysis of that article.
Third, the area and location of the experiment
The area is different and it will also have an impact on the results of the experiment. Experiments conducted in the air-dry weather conditions in the north are close to the ideal pressure characteristics of nitrogen, so the experiments made will certainly not be very accurate. In addition, the instruments used in the experiment are not particularly accurate, so the experimental data will certainly have some errors.
Fourth, the purity of nitrogen
General industrial gas, low temperature separation method. As long as it is true nitrogen, there is certainly very little water inside. But if it is impersonating, then this experiment is basically done in vain. Therefore, when doing experiments, be sure to find out if it is really nitrogen.
Editor's Note: No matter what the result is, the nitrogen filling of the car tires can really bring many benefits to the gas car.
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