Seeing a Humvee in my hometown is not exactly so common, but recently I have seen it more often than I could ever guess. I have already seen a green one and this tan, both with the naturally-aspirated 6.2L Detroit Diesel V8 engine, and the same soft-top crew-cab pick-up truck bodystyle too. But only the tan one had a modification that caught my attention at a first glance, as it was adapted with an air conditioner, with the condenser placed in a position that may seem unexpected to say the least. Placed right behind the cab, on the cargo deck, it's easily noticeable. The location and power provision for the compressor are unknown to me, just like the evaporator box type and its location inside the cab. I'm also not so sure if the canvas top and doors are insulated and airtight enough for a regular vapour-cycle air conditioner to be so efficient at all, in contrast to other devices such as an air-cycling machine like the ones fitted to jet-engined aircraft or even a swamp-cooler which is still quite usual on commercial trucks in Brazil.
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