Joining the system’s solar components with a separate highly insulated round cook-box, further ensures Blazing Tube’s high temperature maintenance during cloudy intervals and even into the evening hours. Using no moving parts and constructed of metal and glass components, the BTSA has a long service life expectancy. Its unique energy conservation characteristics allow it to operate under marginal weather conditions, during which most other solar cookers fail. Normally operating at a temperature above 300°F (148.8˚C.), foods can be fried, baked and boiled throughout daylight hours, and maintained at hot serving temperatures above 160°F (71˚C) late into the evening hours.