Effects of H 2 /CO blend ratio on radiated power of micro combustor/emitter

• DOI: 10.1016/j.applthermaleng.2015.04.052
• Publication Date: 2015-05-02T19:17:57Z
• Authors: Dongyue Jiang; Wenming Yang; Kian Jon Chua; Jianyong Ouyang; Jinghua Teng
• Keywords: Thermophotovoltaic; Effective radiated power

Abstract This study presents the effects of adding CO to H 2 as a blend fuel on the radiated power and efficiency of a micro cylindrical emitter. The effects of emitter length and emitter wall thickness on the radiation energy and emitter efficiency are also examined numerically. The results show that the region with high radiated power appears far away from the emitter inlet with the increase of CO addition. Generally, the emitter efficiency decreases with the increase of CO addition. In the case of 2 m/s flow velocity, the emitter efficiency decreases slightly when the CO mass fraction increases from 5% to 10%. The emitter efficiency decreases with the increase of H 2 /CO/air mixture mass flow rate. In addition, the highest emitter efficiency is obtained when the tube length is 20 mm and wall thickness is 0.4 mm. The H 2 /CO could be a promising blend fuel for micro-thermophotovoltaic (TPV) system application.