Research Article
Modeling Performance of High-Temperature Biomass Gasification Process
Table 7
The effects of preheated air temperature on (a) chemical, (b) chemical, and physical exergy efficiencies.
(a) |
| Biomass material |
ER | Chemical exergy efficiency | and irreversibility (I) values | for the biomass materials | (%) | (%) | 800°K | 1400°K | 800°K | 1400°K |
| | 0.3 | 73.8 | 83.5 | 26.2 | 16.5 | Rice husks | 0.35 | 79.6 | 89.0 | 20.4 | 11.0 | | 0.4 | 85.4 | 93.2 | 14.6 | 6.8 |
| | 0.3 | 79.2 | 79.8 | 20.8 | 20.2 | Sugarcane baggase | 0.35 | 82.3 | 81.9 | 17.1 | 17.7 | | 0.4 | 84.3 | 84.6 | 15.7 | 15.3 |
| | 0.3 | 81.9 | 82.4 | 19.1 | 18.6 | Palm stem | 0.35 | 84.2 | 84.6 | 15.8 | 15.4 | | 0.4 | 86.3 | 86.6 | 13.7 | 13.4 |
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(b) |
| Biomass material |
ER | Chemical and physical exergy efficiency | and irreversibility (I) values for | the biomass materials | (%) | (%) | 800°K | 900°K | 1400°K | 900°K |
| Rice husks | 0.3 | 62.9 | 64.8 | 46.3 | 25.2 | 0.35 | 68.6 | 70.9 | 51.5 | 29.1 | 0.4 | 74.4 | 76.9 | 55.6 | 23.1 |
| Sugarcane baggase | 0.3 | 71.7 | 72.1 | 54.2 | 27.9 | 0.35 | 74.4 | 74.7 | 56.7 | 25.3 | 0.4 | 76.7 | 77.0 | 58.9 | 23.0 |
| Palm stem | 0.3 | 75.3 | 75.7 | 59.9 | 24.3 | 0.35 | 77.7 | 77.9 | 62.1 | 22.1 | 0.4 | 79.7 | 79.9 | 64.0 | 21.1 |
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