Table 7: The effects of preheated air temperature on (a) chemical, (b) chemical, and physical exergy efficiencies.
(a)

Biomass material ERChemical exergy efficiency
and irreversibility (I) values
for the biomass materials
(%) (%)
800°K1400°K800°K1400°K

0.373.883.526.216.5
Rice husks0.3579.689.020.411.0
0.485.493.214.66.8

0.379.279.820.820.2
Sugarcane baggase0.3582.381.917.117.7
0.484.384.615.715.3

0.381.982.419.118.6
Palm stem0.3584.284.615.815.4
0.486.386.613.713.4

(b)

Biomass material ERChemical and physical exergy efficiency
and irreversibility (I) values for
the biomass materials
(%) (%)
800°K900°K1400°K900°K

Rice husks0.362.964.846.325.2
0.3568.670.951.529.1
0.474.476.955.623.1

Sugarcane baggase0.371.772.154.227.9
0.3574.474.756.725.3
0.476.777.058.923.0

Palm stem0.375.375.759.924.3
0.3577.777.962.122.1
0.479.779.964.021.1