What fuel does the Olympic torch use?

Because the Olympic torch fuel is propane and other gases that can burn stably in extreme weather. Propane gas has the characteristics of high combustion heat, low boiling point, not afraid of low temperature, bright flame and high pressure, and can adapt to all kinds of bad weather. The pressure stabilizing device and the regeneration device further ensure the stable combustion of fuel. The pressure stabilizer can stabilize the pressure required for gas combustion and maintain the flame intensity in different weather. The return device can keep the temperature of the fuel chamber, thus ensuring the fuel combustion pressure.

The Olympic flame symbolizes the meaning of peace, light, unity and friendship, and also commemorates Prometheus, the fire god who stole fire for mankind. It has a history of more than 2700 years. According to legend, Mount Olympia in ancient Greece was the habitat of the gods, and the local people sacrificed to the gods every four years for good weather and good crops.

The "Torch Relay" of the Olympic Games began at the 1 1 Olympic Games in Berlin, Germany. At that time, German long-distance runners lit the torch in Olympia, Greece, and then passed it to Berlin Stadium one by one. China held the "Torch Relay" for the first time at the First National Games in 1959.

1936 Olympic Games, magnesium was used as fuel; 1960, using natural resin as fuel; 1976, olive oil is used as fuel; In the recent Olympic Games, propane and other mixed gases were used as fuel; In 2008, the torch of Beijing Olympic Games and London Olympic Games used propane as fuel. Propane mainly produces water vapor and carbon dioxide after combustion, which conforms to the environmental protection concept of green Olympics. More importantly, propane can adapt to a wide temperature range, and it can still produce a saturated vapor pressure above 1 at MINUS 40℃, which is higher than the external atmospheric pressure.