TY - JOUR
T1 - Mesoscale combustion
T2 - A first step towards liquid fueled batteries
AU - Kyritsis, Dimitrios C.
AU - Roychoudhury, Subir
AU - McEnally, Charles S.
AU - Pfefferle, Lisa D.
AU - Gomez, Alessandro
N1 - Funding Information:
We would like to acknowledge Mr. N. Bernardo of Yale University for machining the hardware. The support of DARPA, under Grant No. DAAD19-01-1-0664 (Dr. Richard J. Paur, Contract Monitor) is gratefully acknowledged. Microlith ® is a trademark of Precision Combustion. Inc.
PY - 2004/9
Y1 - 2004/9
N2 - The development of a liquid fueled mesoscale catalytic combustor is presented, based on the coupling of multiplexed electrosprays for liquid fuel dispersion and a stack of catalytic grids. The grids act as a compact catalytic reactor for combustion initiation, stabilization and enhanced conversion, as well as ground electrodes for the electrospray. The combustor has a volume on the order of few cm3 and operates on various fuels, including JP8 jet fuel, which is electrosprayed at a flow rate on the order of 10 g/h and equivalence ratios varying from 0.35 to 0.70. Temperatures in the range 900-1300 K are achieved with a ±5% uniformity over the top circular surface of the burner. Using gas chromatographic analysis of the exhaust gases, a combustion efficiency in excess of 97% is estimated. This estimate was confirmed by exhaust gas composition measurements by photoionization mass spectrometry for operation with dodecane, the most abundant component of JP8. These measurements showed that alkenes and aldehydes are the major hydrocarbon products and that there is no significant molecular growth chemistry. The capability of the system to burn cleanly and efficiently even notoriously polluting fuels was demonstrated.
AB - The development of a liquid fueled mesoscale catalytic combustor is presented, based on the coupling of multiplexed electrosprays for liquid fuel dispersion and a stack of catalytic grids. The grids act as a compact catalytic reactor for combustion initiation, stabilization and enhanced conversion, as well as ground electrodes for the electrospray. The combustor has a volume on the order of few cm3 and operates on various fuels, including JP8 jet fuel, which is electrosprayed at a flow rate on the order of 10 g/h and equivalence ratios varying from 0.35 to 0.70. Temperatures in the range 900-1300 K are achieved with a ±5% uniformity over the top circular surface of the burner. Using gas chromatographic analysis of the exhaust gases, a combustion efficiency in excess of 97% is estimated. This estimate was confirmed by exhaust gas composition measurements by photoionization mass spectrometry for operation with dodecane, the most abundant component of JP8. These measurements showed that alkenes and aldehydes are the major hydrocarbon products and that there is no significant molecular growth chemistry. The capability of the system to burn cleanly and efficiently even notoriously polluting fuels was demonstrated.
KW - Combustion
KW - Microcombustion
KW - Micropower generation
UR - https://www.scopus.com/pages/publications/3242693574
U2 - 10.1016/j.expthermflusci.2003.12.014
DO - 10.1016/j.expthermflusci.2003.12.014
M3 - Article
AN - SCOPUS:3242693574
SN - 0894-1777
VL - 28
SP - 763
EP - 770
JO - Experimental Thermal and Fluid Science
JF - Experimental Thermal and Fluid Science
IS - 7
ER -