With the temperature rising from the road surface combined with direct sunlight under a 38-40 degree Celsius heat, the temperature inside the car can reach 60-80 degrees Celsius. In such cases, many objects left in the car are at risk of catching fire or exploding due to increased internal pressure.
The test results conducted by Dan Tri journalists showed that the temperature in some areas inside the car can reach over 80 degrees Celsius after being parked under 38-degree Celsius sunlight for 30 minutes (Photo: Dinh Nam).
Here are some things that should not be left in the car during hot sunny summer days.
Spray bottles
Spray bottles such as perfume, mineral water spray, air freshener, hairspray, etc. are all compressed and therefore become extremely dangerous when exposed to high temperatures. The propellant inside the spray bottles is highly flammable, and when the bottle’s casing gets hot, the inside pressure increases, which can cause the bottle to explode, releasing flammable propellant and potentially causing a fire if there’s a nearby ignition source.
Lighter
We may think that lighters are harmless when not in use, but in certain conditions, they can become a source of dangerous fire. In hot summer days, the temperature inside the car increases rapidly, which can cause the liquid inside the lighter to expand, leading to the rupture of the lighter’s container, resulting in the leakage of flammable substance and even an explosion.
There have been cases of lighters exploding inside cars in Hanoi on a hot sunny day (Photo: P.Q.K).
Fire extinguisher
This is an essential item in cars, but if left inside a closed car under the hot sun, there’s a risk of explosion, which can cause injuries. In fact, there have been recorded cases of fire extinguishers exploding when left inside a car under high temperatures, causing concerns for users.
Electronic appliances
Devices such as computers, tablets, phones, power banks, etc. are all made of metal, which conducts heat quickly. High temperatures can cause abnormal heating of electronic circuits and resistors, which can reduce their lifespan or even cause immediate damage.
Moreover, these devices contain lithium-ion batteries, which are highly sensitive to temperature. Prolonged exposure to high temperatures, such as in a closed car parked under the scorching sun, can cause the batteries to melt and pose a risk of fire or explosion.
When a car is parked under 38-degree Celsius heat for about an hour, a thermometer inside the car shows 42 degrees Celsius (Photo: Nhat Minh).
Water bottles and sunglasses can also cause car fires
In the scorching summer, almost everyone keeps at least one bottle of drinking water or mineral water in their car to cool down when spending a long time on the road. The usual place where the driver keeps the water bottle is between the two front seats, for convenience. This seemingly harmless habit actually poses a significant risk to safety.
Plastic or glass bottles usually have a cylindrical design, and the water inside them forms a convex lens. When sunlight shines on them, the converging role of the water bottle’s lens is “activated”.
If exposed to sunlight for a long enough time and with sufficient intensity, the converged sunlight at a focal point can ignite interior surfaces such as seat covers or floor mats, which can even cause a car fire. The risk is similar with sunglasses.
Although it is not clear whether leaving sunglasses inside the car caused the BMW to catch fire on Huynh Thuc Khang Street (Hanoi) on the afternoon of May 17, it has made many people realize the need to remove potentially flammable objects from their cars (Photo: Social Media).
The general solution for these cases, if it is necessary to leave these items in the car, is to store combustible materials in bags, pouches, or backpacks and place them in positions that are not directly exposed to sunlight through the windows. If it is not really necessary, avoid leaving them in the car and keep them at home to ensure safety.
When it’s sunny, try to find shaded or covered parking spaces. In cases where it’s a must to park the car under the sun, use sunshades that are readily available and affordable, costing only a few tens of thousands to a few hundred thousand VND.
According to Dan Tri
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