Systems and methods for cooling in a furnace

A burner panel comprising:

• an outer enclosure having an outer surface and an inner surface;
• a burner enclosure disposed at least partially within the outer enclosure and having an outer surface and an inner surface, wherein the outer surface of the burner enclosure and the inner surface of the outer enclosure define a cooling cavity;
• a cooling system disposed at least partially within the cooling cavity, the cooling system comprising:
• a cooling fluid piping system in fluid communication with a cooling fluid inlet;
• one or more discharge openings comprising a slotted extension protruding from the cooling fluid piping system and defining a slot-shaped tube in fluid communication with the cooling fluid piping system, the one or more discharge openings configured to discharge a cooling fluid on at least a portion of the inner surface of the outer enclosure;
• a drain;
• and
• a cooling fluid retention system in fluid communication with the drain, wherein
• the cooling fluid discharged by the one or more discharge openings flows out of the cooling cavity through the drain to the cooling fluid retention system;
• and
• a burner disposed at least partially within the burner enclosure, the burner comprising:
• a combustion chamber;
• a fuel inlet;
• and
• an oxygen inlet.