Importance

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Abstract

An energy efficient wall panel for use together with other such panels to extend about selected peripheral portions of a thermal treatment chamber of a high temperature industrial furnace or the like includes a frame that supports an array of elongate cast refractory thermal insulating members 1) that extend side by side, 2) that have relatively wide flange portions that extend substantially contiguously to define a rigid, impact resistant inner surface that faces toward a thermal treatment chamber for absorbing, storing and re-radiating impingent heat energy back into the chamber, 3) that have relatively thin outer portions connected to the supporting frame, 4) that have central web portions that provide needed strength and rigidity while, at the same time, permitting only minimal conductive heat transfer therethrough, and 5) that have elongate, non-cast, fiber-type thermal insulating members compressively sandwiched between adjacent pairs of the cast refractory members for enhancing the panel's insulating capability while assisting the frame in supporting the panel's sandwiched array of insulating members. Emphasis is placed on optimally configuring the cross sections of the cast refractory members to balance the need to minimize conductive heat transfer with other requirements such as structural integrity while also providing a cast refractory inner surface that will efficiently absorb, store and re-radiate impingent heat energy.

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First Claim