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QuantumDigest ⚛️ on Instagram: "Unlike forced ventilation (fans...), the Stack Effect relies solely on buoyancy forces from heated air. As warm combustion gases rise, they reduce pressure at the chimney base, drawing in fresh air to sustain combustion while expelling exhaust upward. The effect lays its principle on hydrostatic pressure imbalance: • Hot air inside the chimney becomes less dense, creating an upward buoyant force. • The pressure differential drives flow, with taller chimneys enhanc