Optimizing Venturi Effect in Hyperboloid Tower Construction

[Kai G]

What are the ideal dimensions of a hyperboloid tower that would maximize the venturi effect started by thermal updraft from human body heat (assuming previous physical activity on a hot day)? Given a 40ft base, how large should the skirt be and how high off the ground? A vertically symmetrical hyperboloid may not be required.

 

[russ_watters]

Welcome to PF!

What are the ideal dimensions of a hyperboloid tower that would maximize the venturi effect started by thermal updraft from human body heat (assuming previous physical activity on a hot day)? Given a 40ft base, how large should the skirt be and how high off the ground? A vertically symmetrical hyperboloid may not be required.

For a natural updraft tower, the larger the better. However, the human body won't contribute significantly to it.

 

[Kai G]

Welcome to PF!

For a natural updraft tower, the larger the better. However, the human body won't contribute significantly to it.

The intent is to act as a gathering place. Would 20+ bodies be sufficient?

 

[russ_watters]

The intent is to act as a gathering place. Would 20+ bodies be sufficient?

Probably, yes. People aren't a very dense power source, but 20 people is about 1400 W of sensible heat, which should be enough to induce a measurable convection.