An effect of primary air draft and flow rate on thermal performance and CO/CO2 emission of the domestic stove fed with the briquette of coconut shell

Abstract

The aim of the present work is to investigate an effect of primary air draft and flow rate on thermal performance and CO/CO2 emission of the domestic stove fed with the briquette of coconut shell. The work is conducted by following the simplified water boiling test method. Firstly, the stove is tested under natural draft mode (ND). Secondly, the stove is run under force draft mode at two different air flow rates, such that 0.013 m3/s (FD 1) and 0.020 m3/s (FD 2). In the present work, temperatures of water, flame, and stove are measured. Thermal performance of the stove in terms of fuel consumption rates (FCR), firepower (P), heating rates (Ew), thermal efficiency (ηT), and specific useful energy (SUE) is calculated and analyzed. CO/CO2 in flue gas is also measured and analyzed. The result indicates that air flow rate affects the thermal performance and CO/CO2 emission of the stove. Increasing air flow rate enhances the FCR, P, Ew, ηT, and SUE. On the other hand, increasing air flow rate reduces CO/CO2 in flue gas. The highest values of FCR, P, Ew, ηT, and SUE are obtained at the higher air flow rate. The values are 1.43 kg/h, 8.024 kW, 0.294 kW, 3.670%, and 741.975 kJ/kg, correspondingly. Meanwhile, the lowest CO/CO2 of 0.009 is observed at the higher air flow rate.