--- Fundamentals Of Heat And Mass Transfer 8th Edition ✦

“And if you’re wrong?” Marco asked.

“No.” She turned to Chapter 7 (External Flow) and Chapter 8 (Internal Flow). “We don’t just heat the bearing. We cool the shaft. Simultaneously. We need a temperature difference of at least 120°C across the interface—hot bearing, cold shaft—to break the seizure.” --- Fundamentals Of Heat And Mass Transfer 8th Edition

“If we run cold river water through the shaft at 20 m³/s,” she said, tapping a page of hand-scrawled calculations, “the shaft’s surface temperature will drop 80°C in forty minutes. Then we hit the bearing with induction heaters—180°C outer surface. The differential strain will crack the oxide bond. It will move .” “And if you’re wrong

Dr. Elara Vance pressed her palm against the frosted window of the hydroelectric plant’s control room. Outside, the great concrete arch of the Caldera Dam stood frozen—not in ice, but in failure. Three weeks ago, a catastrophic bearing seizure had stopped the main turbine. The backup generator had lasted six hours. Now, the small mountain town of Oak Springs relied on diesel sputters and fading hope. We cool the shaft