Greetings!
Keeping cool isn’t nearly as hard as some people would have you believe. 12v swamp coolers work great, and use very little power. I also have USB powered thermoelectric seat cushions, blankets, and even a jumpsuit, that both heat & cool. Mine all use water flowing through tubes, heated/cooled by a thermoelectric chip. Very cool. (Pun intended!)
Cheers!
"Fuel powered everything for the win, preferably hydrogen." ~ JustTheFacts