Am 02.12.2015 um 19:17 schrieb Pierce Nichols:
Jon,
Solid heat exchangers are a PITA -- they're heavy and their thermal
limits constrain ISP. I wonder if you could do the soot one better and
mix ammonia with nanoparticles of a variety of microwave absorbers
(susceptors) to get a desired temperature.* Then, instead of a heavy
heat exchanger, you just need a microwave-transparent plumbing section.