Page 201 - Energy from Toxic Organic Waste for Heat and Power Generation

Power Generation From Renewable Energy Sources 179

80
70
60
Conversion (%) 40
50
30
20
10
0
0 40 80 120 160
Time (s)
Fig. 11.19 Time optimization catalytic degradation.

30 Speed: 1500 RPM, CR: 17.5
Inj.timing: 27 bTDC, Biomass: Babul wood
Injector: For diesel 3hole, 0.2mm, for HOME 4hole, 0.3mm
25
Brake thermal efficiency (%) 20 Diesel-PG (HCC)
IOP: For diesel 205bar, for HOME 230bar
Carburetor: Parallel flow gas entry
15

10
HOME-PG (HCC)
HOME+FO10-PG (RCC)
5
HOME+FO20-PG (RCC)
HOME+FO30-PG (RCC)
0
0.00 0.74 1.48 2.22 2.96 3.70
Brake power (kW)
Fig. 11.20 Effect of combustion chamber shape and fuel oil addition on brake thermal
efficiency.

HOME-producer gas operation resulted in lower thermal efficiency com-
pared to diesel-producer gas operation. Difference in the fuel properties
and lower mixing rates are responsible for the trends observed. Also, lower
flame speed and energy content of both HOME and producer gas fur-
ther add to this trend. The study with RCC and addition of fuel oil in
HOME change the performance of the engine due to significant changes
in the fuel properties and combustion behavior. HOME+FO20-PG opera-
tion with reentrant combustion chamber (RCC) resulted in 4.9% increased
BTE compared to HOME-PG(HCC) operation when fuel oil was added
from 0% to 20% (by vol) in HOME. This may be due to increased energy
content and improved volatility of the blend, leading to improved liquid