What is the flash point of heat transfer oil?
2 Answers
Different types of heat transfer oil have different flash points, with mineral-based oils typically ranging between 190-200. Flash point: Refers to the lowest temperature at which the vapor of an organic heat transfer fluid mixed with air will briefly ignite when exposed to a flame under heating conditions. The lower the flash point, the higher the evaporation rate of the organic heat transfer fluid and the poorer its safety, and vice versa. Additionally, a higher flash point results in less loss of the organic heat transfer fluid during use. Heat transfer oil: Heat transfer oil is a specialized oil with good thermal stability used for indirect heat transfer. It features resistance to thermal cracking and chemical oxidation, excellent heat transfer efficiency, rapid heat dissipation, and outstanding thermal stability.
The flash point of heat transfer oil is a critical indicator related to the safety of automotive cooling systems. I usually pay close attention to these issues when driving. For example, the flash point of conventional mineral-based heat transfer oils typically ranges between 220 to 240 degrees Celsius, while synthetic oils have higher flash points, reaching above 280 degrees. The flash point refers to the temperature at which the oil starts emitting flammable vapors—the higher this value, the safer it is, as it reduces the risk of ignition under high engine temperatures. I've personally used different types of oils, and once I bought a cheaper mineral oil with a flash point of only 230 degrees, which resulted in a strange smell during a long-distance drive—quite frightening. Since then, I only choose synthetic oils with flash points above 270 degrees. They may be more expensive, but they offer much greater peace of mind. Seasonal changes also matter; extra caution is needed during hot summers. Regularly checking the oil quality helps prevent unexpected issues and ensures driving safety comes first.
