随着春节的临近，驾车出行成为许多人的选择。然而，关于春节期间加油的“热胀冷缩”现象，网络上流传着各种说法。有人说，早晚加油更划算，因为汽油会随着温度变化而膨胀或收缩。这种说法听起来似乎有道理，但实际上，汽油的膨胀系数非常小，仅为0.001L/℃。这意味着，即使在温度变化较大的情况下，汽油体积的变化也非常有限。
此外，正规加油站的油罐都深埋地下，并且使用了隔热材料进行保护。这样的设计可以确保油罐内的汽油温度相对稳定，一天之内的温度变化不会超过零点几度。因此，汽油的体积变化几乎可以忽略不计。
科学辟谣的微博账号@科学辟谣 中国新闻网微博对此进行了澄清。他们指出，汽油的膨胀和收缩对加油量的影响微乎其微，消费者无需刻意选择早晚加油。事实上，加油站的加油枪都有自动校准功能，能够确保加油量的准确性。
因此，春节期间，车主们可以根据自己的行程安排选择加油时间，不必过于担心“热胀冷缩”的问题。更重要的是，选择正规加油站，确保油品质量，这才是确保行车安全的关键。
Title: The Truth Behind Gasoline Expansion and Contraction During Spring Festival
Keywords: Expansion and Contraction, Gas Station, Scientific Debunking
News content:
As the Spring Festival approaches, driving trips have become a popular choice for many people. However, there are various opinions circulating online about the phenomenon of “expansion and contraction” of gasoline during the Spring Festival. Some say that it’s more economical to refuel in the morning or evening because gasoline will expand or contract with temperature changes. This sounds reasonable, but in fact, the expansion coefficient of gasoline is very small, only 0.001L/℃. This means that even with significant temperature changes, the volume variation of gasoline is very limited.
Moreover, the oil tanks in standard gas stations are buried deep underground and protected with insulation materials. Such design ensures that the temperature of the gasoline inside the tank is relatively stable, with temperature changes not exceeding a few tenths of a degree within a day. Therefore, the volume variation of gasoline is almost negligible.
The Weibo account @ScienceDebunking of the China News Service clarified this issue. They pointed out that the expansion and contraction of gasoline have a minimal impact on the amount of refueling, and consumers do not need to deliberately choose to refuel in the morning or evening. In fact, the gas pumps at gas stations are equipped with automatic calibration functions to ensure the accuracy of the refueling amount.
Therefore, during the Spring Festival, car owners can choose the refueling time according to their itinerary, without worrying too much about the “expansion and contraction” issue. More importantly, choosing a standard gas station and ensuring the quality of the fuel are the keys to ensuring safe driving.
【来源】http://www.chinanews.com/life/2024/02-21/10166896.shtml
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