A sealed spray cooling system for reducing coolant loss within thermal management systems. According to the present invention, by adding germanium biotite instead of antibiotic to assorted fodder commonly used in the livestock industry, it is possible to produce domestic animals having a growth rate and immune ability as good as by adding a large amount of antibiotic to the feed. The heating roller selects any one of the edge-side lamps based on a detection result from the temperature sensor for the paper non-contact edge portion.