TY - JOUR
T1 - Application of biomass fast pyrolysis part II
T2 - The effects that bio-pyrolysis oil has on the performance of diesel engines
AU - Yang, S. I.
AU - Hsu, T. C.
AU - Wu, C. Y.
AU - Chen, K. H.
AU - Hsu, Y. L.
AU - Li, Y. H.
N1 - Funding Information:
The authors would like to thank the National Science Council , Taiwan, for financially supporting this research under NSC 102-3113-P-008-007 , NSC 102-2221-E-150-036 and NSC 102-2218-E-150-001 .
PY - 2014/3/1
Y1 - 2014/3/1
N2 - This study used the fast pyrolysis method to produce bio-oil from coffee bean residue. The oil was mixed with diesel fuel through emulsification to produce emulsified fuel with varying proportions. A single-cylinder diesel engine connected to a 12-kW power generation system was used as the test system to examine the performance indices of a diesel engine under various loads and rotational speeds when using three fuel mixtures with varying proportions of bio-oil (i.e., CPO (coffee bean residue pyrolysis oil) 0 (100% diesel), CPO 5 (5 vol.% bio-oil/95 vol.% diesel), and CPO 10 (10 vol.% bio-oil/90 vol.% diesel)). According to the results, compared to CPO 0, the addition of CPO 5 and CPO 10 increased the fuel consumed for the same power output. Although CPO 5 and CPO 10 had lower heating values that reduced combustion efficiency, the water content and emulsification properties of these fuels enhanced certain aspects of combustion. Increasing the proportion of bio-oil effectively reduced NOx emissions, but in certain situations, denser smoke was produced. The smoke resulted from the added bio-oil, which reduced heating values and combustion efficiency. The emulsification properties of the oil contributed to microexplosion of oil droplets, which enhanced combustion characteristics.
AB - This study used the fast pyrolysis method to produce bio-oil from coffee bean residue. The oil was mixed with diesel fuel through emulsification to produce emulsified fuel with varying proportions. A single-cylinder diesel engine connected to a 12-kW power generation system was used as the test system to examine the performance indices of a diesel engine under various loads and rotational speeds when using three fuel mixtures with varying proportions of bio-oil (i.e., CPO (coffee bean residue pyrolysis oil) 0 (100% diesel), CPO 5 (5 vol.% bio-oil/95 vol.% diesel), and CPO 10 (10 vol.% bio-oil/90 vol.% diesel)). According to the results, compared to CPO 0, the addition of CPO 5 and CPO 10 increased the fuel consumed for the same power output. Although CPO 5 and CPO 10 had lower heating values that reduced combustion efficiency, the water content and emulsification properties of these fuels enhanced certain aspects of combustion. Increasing the proportion of bio-oil effectively reduced NOx emissions, but in certain situations, denser smoke was produced. The smoke resulted from the added bio-oil, which reduced heating values and combustion efficiency. The emulsification properties of the oil contributed to microexplosion of oil droplets, which enhanced combustion characteristics.
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U2 - 10.1016/j.energy.2013.12.057
DO - 10.1016/j.energy.2013.12.057
M3 - Article
AN - SCOPUS:84896390378
SN - 0360-5442
VL - 66
SP - 172
EP - 180
JO - Energy
JF - Energy
ER -