The (thermal converter?) does suck heat out of your armor if you have it installed. With that, the solar panel, and the kenetic generator, you can keep yourself well powered. The kenetic generator still produces more heat then the thermal converter uses up, but the rate is now managable and as long as you walk, you can stay cool enough for several minutes to do exploring. Not sure how much faster the heat drops with the cooling unit installed as well, have not tried that yet.
forgot to note, I also have the sprint assist upgrade installed and at half power, which adds more heat to the system but it is still easy to manage this way.