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Sitting in standstill traffic in >30°C climates is more than an inconvenience; it is an acute health risk. Please consider the fact that a significant proportio
by oofnik 4y ago
Sitting in standstill traffic in >30°C climates is more than an inconvenience; it is an acute health risk. Please consider the fact that a significant proportion of humans live in tropical or desert climates which would be otherwise uninhabitable without air conditioning technology.
- mordae 4y agoOTOH We've had some new trams with A/C that doesn't really measure up and you cannot open the windows. Same with trains. Above 30°C it's actually more comfortable to just ventilate the train instead of A/C.
- bmicraft 4y agoYeah, the trams in my city generally are not designed to cool down more than 5°C from outside temperature.
- StillBored 4y agoIs it actual AC or swamp coolers/evaporative cooler? Usually as I mentioned elsewhere the licensing requirements (at least in the US) for actual AC systems usually involve a portion on computing heat load/etc in order to size a system. Although, I'm betting the engineering side of the tram probably avoids needing anything other than the equivalent of the US PE/etc. Its probably a bit tricky because the needs of being able to load/unload people quickly also probably tend to dump a lot of hot air into the car. Either way though, busses, cars, trains all tend to do ok in hot climates because they have massively oversized AC systems and can move a lot of air relative to the enclosed space. Returning to my original point, I'm betting your trams don't actually have AC, from your description I might guess they have some kind of evaporative cooler.
- mypalmike 4y agoAre there really many places where AC enabled humans to move into a region of the globe where they never lived before?