Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Gazi University, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2025
Thesis Language: Turkish
Student: Atakan KARABATAK
Supervisor: Tamer Çalışır
Open Archive Collection: AVESIS Open Access Collection
Abstract:
Examining the thermal performance of quartz infrared heaters that are used in many different applications is very important to ensure that the desired heating power can be obtained in the most efficient way. Reasons such as high operating temperatures, complex geometric structures and dominant radiative heat dissipation properties make it very difficult to carry out analytical calculations about their working principles. This study focuses on experimentally and numerically investigating the thermal performance of four vertically mounted quartz infrared heaters under different parameters. To analyze the effects of power, distance, position, and angle with precision, a thermal test setup and a numerical model were developed. To define the boundary conditions required for the numerical model, existing studies were reviewed, and two equations based on the net radiation method were utilized to calculate the quartz and filament temperatures of the heaters. These values were incorporated into the numerical model developed using the Steady State Thermal module of ANSYS software, allowing for analyses under various conditions. The numerical model was validated by comparing its results with experimental data, showing average percentage differences of 5.1% for position, 3.7% for distance, 6.4% for angle, and 3.2% for power parameters. Additionally, the validated numerical model was used to investigate the performance of quartz infrared heaters in a vacuum environment and to evaluate how varying emissivity value of the ceramic coating on their rear surfaces influence heating performance.
Key Words : Quartz infrared heater, thermal performance, heat flux, radiative heat transfer, natural convection heat transfer, heat flux sensor