Alper Güneç; Meliha Rigan; Elif Mendi; Ali Osman Aydınnarı; Sena Ozal. EFFICIENCY ENHANCEMENT IN THE RECUPERATOR OF A REHEATING FURNACE: Received: 3rd October 2025, Revised: 30th October 2025, 5th November 2025, Accepted: 12th November 2025, Date of Publication: 4th December 2025. mijst 2025, 11, 75-84.