NUMERICAL MODELING AND EXPERIMENTAL INVESTIGATION OF A HEAT EXCHANGER USED IN INDUSTRIAL OVENS


Creative Commons License

Kurul F., Ülke İ., Çapa M.

11th INTERNATIONAL CONGRESS ON ENGINEERING AND TECHNOLOGY MANAGEMENT, İstanbul, Türkiye, 16 Mart 2024, ss.136-142

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.136-142
  • Gazi Üniversitesi Adresli: Evet

Özet

Industrial ovens are widely used equipment in many areas of the food industry. Heating in these ovens is provided using electricity, natural gas, or solid fuel. Some of the thermal energy obtained from these fuels is transferred to the inner environment of the oven through heat exchangers. The remaining energy is discharged into the atmosphere through the oven chimney as hot air. This unused heat constitutes a significant part of the fuel cost. The heat exchangers' efficiency in these ovens should be increased to reduce energy losses. In this study, the thermal analysis of the heat exchanger of an industrial- type oven is performed using the finite element method, and the internal flow of hot air is examined. Finite element analyses are experimentally verified, and the efficiency of the heat exchanger is reviewed. In experimental studies, an industrial-type oven with a natural gas heat exchanger produced by FİMAK Makina Inc. is used. The temperature values of the air leaving the heat exchanger operated under 50 mbar gas pressure are determined. In addition, side surface temperatures are recorded during the experiment using six thermocouples. At the end of the study, the hot air flow behavior inside the heat exchanger is demonstrated.