التفاصيل البيبلوغرافية
| العنوان: |
Impacts of fuel feeding methods on the thermal and emission performance of modern coal burning stoves. |
| المؤلفون: |
Ahmad, Riaz1,2,3 riaz@cau.edu.cn, Yuguang Zhou1,2,3 zhouyg@cau.edu.cn, Nan Zhao1,2,3 nan.zhaoca@outlook.com, Pemberton-Pigott, Crispin3,4 crispinpigott@outlook.com, Annegarn, Harold John3,4 hannegarn@gmail.com, Sultan, Muhammad5 muhammadsultan@bzu.edu.pk, Dong, Renjie1,2,3,6 rjdong@cau.edu.cn, Xinxin Ju7 jxx0617@126.com |
| المصدر: |
International Journal of Agricultural & Biological Engineering. 2019, Vol. 12 Issue 3, p160-167. 8p. |
| مصطلحات موضوعية: |
*COAL, *FUEL, *INDOOR air pollution, *COMBUSTION efficiency, *THERMAL coal, *STOVES |
| مستخلص: |
The extensive use of traditional cooking and heating stoves to meet domestic requirements creates a serious problem of indoor and outdoor air pollution. This study reports the impacts of two fuel feeding methods - front-loading and top-loading on the thermal and emissions performance of a modern coal-fired water-heating and cooking stove using a contextual test sequence that replicates typical patterns of domestic use. Known as a low-pressure boiler, when this stove was fueled with raw coal, the findings indicate that front-loading the fuel, which devolatilizes the new fuel gradually, produced consistently higher space heating efficiency and lower emission factors than top-loading the same stove, which devolatilizes new fuel all at once. Comparing the performance at both high and low power gave the similar results: front-loading with raw coal produced consistently better results than top-loading. The average water heating efficiency when front-loading was (58.6±2.3)% and (53.4±1.8)% for top-loading. Over the sixteen-hour test sequence, front-loading produced 22% lower emissions of PM2.5 (3.9±0.6) mg/MJNET than top-loading (4.7±0.9) mg/MJNET. The same pattern was observed for carbon monoxide and the CO/CO2 ratio. CO was reduced from (5.0±0.4) g/MJNET to (4.1±0.5) g/MJNET. The combustion efficiency (CO/CO2 ratio) improved from (8.2±0.8)% to (6.6±0.6)%. Briquetted semi-coked coal briquettes are promoted as a raw coal substitute, and the tests were replicated using this fuel. Again, the same pattern of improved performance was observed. Front loading produced 3.5% higher heating efficiency, 10% lower CO and a 0.9% lower CO/CO2 ratio. It is concluded that, compared with top loading, the manufacturers recommended front-loading refueling behavior delivered better thermal, emissions and combustion performance under all test conditions with those two fuels. [ABSTRACT FROM AUTHOR] |
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