wichita.edu
… solar-thermal energy collectors, and spacecraft (close to sun or reentry) dissipates significant amount of heat at given small surface area (high heat flux), and a failed thermal management results in deteriorated performance, reduced durability, and/or even broken-down systems/devices. A good solution to this is to employ phase-change (liquid to gas)…
https://www.wichita.edu/academics/engineering/mechanical_engineering/research/sesel/thermal-management.php