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Multiple Choice

Turbine blade erosion is accelerated by

Turbine blade erosion is driven by liquid water droplets in the steam. When the steam carries a lot of moisture, you have wet steam with many droplets that are carried into the turbine at high speeds. These droplets strike blade surfaces with substantial kinetic energy, chipping away material over time and causing erosion. The more moisture present, the greater the droplet concentration and impact frequency, so erosion accelerates. Higher steam purity reduces chemical impurities but doesn’t change the mechanical erosion from droplet impacts. Lower velocity would decrease the energy of each impact and thus reduce erosion, not accelerate it. High condensate quality means dryer steam with fewer droplets, which would lessen erosion rather than speed it up.

Turbine blade erosion is driven by liquid water droplets in the steam. When the steam carries a lot of moisture, you have wet steam with many droplets that are carried into the turbine at high speeds. These droplets strike blade surfaces with substantial kinetic energy, chipping away material over time and causing erosion. The more moisture present, the greater the droplet concentration and impact frequency, so erosion accelerates.

Higher steam purity reduces chemical impurities but doesn’t change the mechanical erosion from droplet impacts. Lower velocity would decrease the energy of each impact and thus reduce erosion, not accelerate it. High condensate quality means dryer steam with fewer droplets, which would lessen erosion rather than speed it up.