i wouldnt be so paranoid, there are tons of things that emit high amounts of heat in your house that produce similar heat signatures, like if you have an old style monitor those things can quite litterally burn you. and your oven being on. lights in general, many things. but if you are really concerned with this then something that can absorb a lot of the heat and will transfer it well is a good choice, a completely wooden enclosure would work if thick enough, or copper plating with a water cooling system will be a rather effective measure. LOTS OF AC!