As per my message 32, it appears to me that Buddhism's alleged nervana state really goes against science's first thermodynamic law big time, in that energy appears to vanish in this state as I am understanding the doctrine.
Energy doesn't go to nirvana; souls go to nirvana.
For that matter, energy doesn't go to your eternal heaven, either. I still don't see what "energy" has to do with either place and your response doesn't really make it any clearer.