57. Please briefly describe the hazards of backflow in the main fan
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57. Please briefly describe the hazards of backflow in the main fan
If the main fan is still driven by the prime mover, the power of the prime mover is converted into frictional heat due to the counterflow of air within the fan. The hot gas flowing back into the fan can quickly cause the fan blades to expand or even get damaged.
If the main fan is still driven by the prime mover, the power of the prime mover is converted into frictional heat due to the counterflow of air within the fan; in other words, all of the fan’s power is used to heat the gas. As a result, the gas temperature rises rapidly, and the hot gas flows back into the fan, which can quickly cause the fan blades to expand or even melt, leading to the rotor escaping its housing.
If the main fan is still driven by the prime mover, the power of the prime mover is converted into frictional heat due to the counterflow of air within the fan. The hot gas flowing back into the fan can quickly cause the fan blades to expand or even get damaged.