Temperature differences to create a strong pull

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To create a strong pulling force through air temperature differences, a significant temperature gradient is necessary, typically around 20-30 degrees Celsius. The concept of using a glass roof to heat air and create upward air currents is plausible, but the effectiveness depends on the design and size of the opening. Small models may not yield noticeable results due to scale limitations and insufficient temperature differences. To enhance air currents, consider optimizing the size of the opening and the heating source. Overall, the idea is feasible with proper adjustments and understanding of thermodynamics.
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Dear physics forum, I'm currently working on a project and wondering what should the air temperature difference be to create a strong pulling force ? I'm working on creating a sustainable house, the concept is to have a enclosed glass roof with an opening that allows the sun to heat the air inside and as the contained air heats up, it will try to escape through the opening hence creating a pulling force, but my question is, is this even plausible? I tried it with a small model and a spotlight, doesn't seem to get any results tho. Need some opinion from you guys.
 
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I am unclear on what you mean, or want, by a strong pulling force?

Do you want something akin to air currents?
 
So sorry that i did not clearly define my question, yes air current.
 
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