Inspired both by Mass Effect and my a friend's own hard sci-fi setting, this is basically an extreme-performance cooling system wherein a shower of molten metal droplets is expelled at one end of the vessel, and recollected at the other end of the vessel via a powerful electrostatic/electromagnetic field. As the metal droplets are exposed to the vacuum of space, they rapidly radiate away a majority of their heat, with far greater efficiency than even double heat sinks.
This comes at a cost however. The collection system is massive, and there's also the risk of losing coolant to the cosmic void. As such, this system will need to be topped up. Oh, and it's also possible to lose coolant to enemy fire or extreme maneuvers.
Thoughts?
For clarification... My idea for this system, mass-wise, is that there is an initial cost for installing the system (which scales with the size of the ship), but after that there's a break-even point where it outperforms Double Heat Sinks in terms of cooling per ton.