So my apartment has an attached garage and I love having it, but I also live in Las Vegas where, today, it was over 100F outside. I have been considering air conditioning the garage, or even just a corner of it for a workshop with a cool breeze, but I have a little problem - since it's an apartment I can't modify the garage in any way to vent hot air outside.
I've considered portable evaporative coolers, and while I've got one and it works, it only works for a little while - since the garage is so enclosed the evaporative cooler eventually humidifies the air to the point where it stops working. This also creates problems with condensation and since my hobby space in the garage is to be used for electronics, radio and various other electricity-friendly pursuits, condensing water droplets is a very bad thing.
What can I do? Is there any way to lower the temperature of the garage air without somehow venting hot air back to the outside world? Would combining an evaporative cooler and a dehumidifier work? If so, how should I arrange them for optimal cooling?