春节期间，车辆出行增多，有关加油的最佳时机引发公众热议。有观点认为，由于汽油具有热胀冷缩的特性，早晚温度较低时加油会更划算。然而，根据科学辟谣官方微博的信息，汽油的膨胀系数实际上非常小，大约只有0.001L/℃。而且，正规加油站的油罐通常埋于地下，并使用了隔热材料，因此油品的温度变化幅度很小，一天之内不会超过零点几度，汽油体积的变化也微乎其微。
这意味着，尽管气温确实会影响汽油的体积，但在现实生活中，这种变化对于加油成本的影响是微不足道的。因此，无论选择何时加油，对于大多数车主来说，成本上的差异可以忽略不计。所以，公众无需特别挑选时间加油，按需加油即可，这不仅方便了自己的出行安排，也更加符合经济效益。
英文标题Title：Is It Really More Economical to Fill Up During the Spring Festival?
英文关键词Keywords：Thermal Expansion and Contraction, Best Time to Fill Up, Fuel Cost
英文新闻内容News content：
During the Spring Festival, when vehicle travel increases significantly, the best time to fill up with gasoline has become a topic of public discussion. Some believe that due to the property of gasoline called thermal expansion and contraction, filling up in the early morning or late evening when temperatures are lower would be more economical. However, according to information from the official Weibo account of Scientific Debunking, the expansion coefficient of gasoline is actually very small, approximately 0.001L/°C. Moreover, regular gas stations typically bury their fuel tanks underground and use insulating materials for the pipelines, which means that the temperature of the gasoline changes by only a few degrees in a day, and the volume change is also minimal.
This indicates that while temperature does affect the volume of gasoline, in real-life situations, the impact on fuel costs due to these volume changes is negligible. Therefore, for most drivers, the cost difference at different times of the day for filling up is immaterial. Hence, the public does not need to choose specific times to fill up their tanks; filling up as needed is both convenient and cost-effective.
【来源】http://www.chinanews.com/life/2024/02-21/10166896.shtml
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