All uses of energy create heat. That's practically what it means to use energy: convert it into heat. If you create more heat than can be radiated away from Ear

All uses of energy create heat. That's practically what it means to use energy: convert it into heat. If you create more heat than can be radiated away from Earth, then you're going to create a very unsustainable situation. There aren't any devices that operate by moving heat around unless they create additional heat to do so, or they do no work. If you're just shuffling heat around, you're not increasing entropy, and you're not achieving any observable mechanical objective, which is pretty much the whole reason we consume energy.