What is one key feature of the heating coil in a fuel oil storage tank?

The heating coil in a fuel oil storage tank serves a crucial function by providing heat to raise the oil temperature. This heating is necessary because many types of fuel oil can become viscous or even solidify at low temperatures, making it difficult to pump and use efficiently. By keeping the oil at an optimal temperature, the heating coil ensures that the fuel remains fluid, facilitating easier pumping and preventing issues in the handling and transfer of fuel.

Maintaining a specific temperature, such as at 104°C, might not be universally applicable since the required temperature can vary based on the type of fuel being stored and its intended application. Moreover, while it is important for the heating system to prevent the oil from cooling down excessively, the key role of the heating coil is to directly provide heat. Filtering the oil before it enters the pump is a separate function and does not relate to the heating process. Thus, the primary feature of the heating coil is indeed to raise the temperature of the fuel oil for optimal performance.