Performance analysis of the infrared gas stove with a vertical ejector

Energy conservation and emission reduction are critical global concerns, with infrared gas stoves recognized for their superior thermal efficiency and low emissions. However, research on infrared gas stoves with vertical ejectors, particularly those designed for use in horizontally constrained spaces, remains sparse. To bridge this gap, an experimental system is constructed to investigate the effects of perforated plate height, nozzle exit position (NXP), and heating height on stove performance. The experimental results reveal that gas uniformity is significantly influenced by the height of the perforated plate, while NXP has a lesser impact. The optimal height of the perforated plate is 12 mm, and the recommended value for NXP is −4 mm. With the heating height increasing from 15.0 mm to 36.5 mm, the thermal efficiency of the infrared gas stove decreases from 70.2 % to 59.3 %. The concentration of carbon monoxide in the flue gas initially declines sharply then gradually increases with the increase of heating height. Meanwhile, the concentration of nitrogen oxide exhibits slight fluctuations, with a mere 2 ppm difference between maximum and minimum values. Based on the results, a heating height of 19.3 mm is recommended. This study provides guidance for optimizing domestic gas stoves.