cRiPpLe_rOoStEr
We don't ride to provide a good story for the rice
Cheaper than a regular air-conditioner, in some cases about 5 times cheaper, and with a lower impact on fuel consumption, roof-mounted swamp-coolers became an usual feature in long-hauling trucks back here. More effective in dry places than in humid ones, but I've seen them even in Amazon. They're also easier and faster to retrofit into older rigs.
And since it doesn't require an engine-driven compressor, remains working with the engine shut-off while the driver sleeps inside the cab.
Even in those armored cash-transit vans it became an usual replacement for regular air-conditioners.
Using water instead of a synthetic gas, it also has an environmental standpoint for those who believe in antropogenic global warming. The overall energy consumption is about 90% lower than with a regular air-conditioner.
And since it doesn't require an engine-driven compressor, remains working with the engine shut-off while the driver sleeps inside the cab.
Even in those armored cash-transit vans it became an usual replacement for regular air-conditioners.
Using water instead of a synthetic gas, it also has an environmental standpoint for those who believe in antropogenic global warming. The overall energy consumption is about 90% lower than with a regular air-conditioner.

