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Most cities in the world don't have steam infrastructure like that and still have steaming manholes in the winter from hot wastewater.
by calamari4065 3y ago
Most cities in the world don't have steam infrastructure like that and still have steaming manholes in the winter from hot wastewater.
- Groxx 3y agoDoesn't even have to be hot, it just has to be hotter than the air above ground, and relatively humid (how much depends on the temperature difference). You can also see rivers steam when it gets very cold, and they're often only a few degrees above freezing at that point.
- wolverine876 3y agoIs all the steam from hot wastewater? With all the things going on underground in cities, I've assumed there must be heat (i.e., from basic thermodynmics), and of course it needs a place to escape.