That results showed good speed, the crisis has not made enough smoke to flow backward, and the speed is too high to reach the chimney hood vent smoke through ventilation as well.
The results show that the critical speed, the better it must be large enough not to smoke the reverse flow and the speed is too high to affect the smoke vent smoke through the chimney as well.
The results found that speed the crisis that it must not smoke so much as the flow back and the speed is too high also affect the ventilation smoke exhaust through the chimney.