How tall must a chimney be to have a significant self-levitation effect? !
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There are mainly 2 reasons for the “chimney effect”: 1. The atmospheric pressure at high altitudes is lower than that at the ground level； 2. The air flow at high altitudes is fast, creating a negative pressure. I want to ask, how tall must a chimney be for this \"chimney effect\" to be noticeable? ! Generally, a 15m chimney doesn’t really have any self-extraction effect, right? Please give me some advice.
This is related to temperature, flow rate, and air pressure, right? At high temperatures, it has a low specific gravity and high suction power ； At low temperatures, the specific gravity is high, and the attraction decreases.
How tall are the chimneys of rural stoves? It relies on the upward buoyancy of the hot smoke. In cities, the flues in high-rise buildings rely on strong exhaust ventilation; some say that this approach works better in low-rise buildings
1. Theoretically, as long as there is a height difference, there is a \"self-extraction effect,\" even if it’s a minor one. 2. The term \"relatively obvious\" used in the question is a qualitative description; it’s relative – it depends on the specific requirements; if those requirements are met, then it’s considered obvious. 3. To take another example similar to the one given by the friend on the 4th floor: if a wind extraction hood with a height equivalent to that of a chef’s hat is used when starting up a coal stove, a significant effect will be observed. 4. While meeting the needs for wind extraction, the height of the chimney is also closely related to environmental protection requirements; a higher height allows pollutants to spread over a larger area, thereby reducing the concentration of pollutants per unit volume