For some time I have contemplated using some sort of cooling mechanism to give me prefect fermentation temperatures while I ferment my beer. Last summer I painstakingly used my chest freezer kegerator. It was a horrible process. It involved removing one (or two) kegs, cranking up the temperature and lifting and setting the heavy bucket with 5 gallons of wort into the chest freezer.
There are several different methods in which coffee can be added to a beer. I’ve had great success with two different methods: adding cold pressed coffee at bottling/kegging and dry-hopping with whole coffee beans. It’s important to remember that not just any coffee bean will work with your beer. Trying the base beer to get an idea of what flavors and aromas it has, greatly helps in trying to find a coffee that will either complement it or add enough contrast without being lopsided. I am only going to touch on the methods I have tried. You could also try adding coffee during the boil or during the mash, among many other methods.