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12 - Liquid Fuel Atomization and Combustion

Published online by Cambridge University Press:  01 December 2022

By
Ajay K. Agrawal
Edited by
Jacqueline O'Connor ,
Bobby Noble  and
Tim Lieuwen
Jacqueline O'Connor
Affiliation:
Pennsylvania State University
Bobby Noble
Affiliation:
Electric Power Research Institute
Tim Lieuwen
Affiliation:
Georgia Institute of Technology
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Summary

Nearly one-third of the energy produced in the US comes from liquid fuels derived from crude oils, natural gas plant liquids, and other condensates. Fuel atomization to produce spray(s) is necessary for practical combustion systems employing liquid fuels. This requirement stems directly from the high energy density of the liquid fuels. Despite the major changes underway in the portfolio of liquid fuels, fuel atomization and combustion systems have remained vastly unchanged. The current practice is to design drop-in liquid biofuels that can be used “as is” in existing combustion devices. However, such fuels can be energy intensive to produce and create wasteful byproducts, eroding the carbon footprint benefits of the liquid biofuels. Thus, it is imperative that the liquid fuel injection, atomization, and combustion systems of the future consider increased fuel flexibility to utilize both fossil and alternative fuels from multiple sources within the same combustor hardware. Fuel properties and fuel atomization and combustion hardware should be co-optimized to minimize the carbon footprint based on the life-cycle analysis of the fuel. This chapter discusses atomization of renewable liquid fuels, detailing the phenomenology and controlling physical processes.

Keywords

energy densityinjectionvaporizationcokingatomizationprimary breakupsecondary breakupWeber numberReynolds numbersatomizer
Type
Chapter
Information
Renewable Fuels
Sources, Conversion, and Utilization
 , pp. 414 - 450
Publisher: Cambridge University Press
Print publication year: 2022

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