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← ScienceWhich risk increases when a supercritical CO2 power cycle operates continuously with fluctuating heat source?
A)Turbine blade fatigue accelerates rapidly✓
B)Condenser pressure approaches critical point
C)Working fluid chemical decomposition intensifies
D)Feed pump cavitation chance increases sharply
💡 Explanation
High cycle fatigue becomes more problematic because variations in the heat source cause thermal stresses and strains within turbine blades subjecting blade materials to fatigue related to a continuous change; therefore, blade fatigue increases, rather than other material degradation issues because load variations greatly increase.
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