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University of Toronto

1. Albert-Green, Steven. Understanding the Effects of Nozzle Design and Spray Characteristics for Optimizing Pyrolysis Liquid Biofuel Ignition and Combustion.

Degree: 2017, University of Toronto

This thesis examines how nozzle design and spray characteristics influence the combustion and emissions of a pure pyrolysis liquid biofuel (PLB) flame in a 10kW, insulated, swirl burner using an internally mixed air-blast nozzle. PLB is a carbon-neutral fuel made from waste wood, but its properties make efficient combustion challenging. First, atomization trends were examined with distilled water to elucidate the important parameters and design aspects and to determine the nozzle's primary atomization mechanism(s). With this information, combustion experiments studied how carbon monoxide, nitric oxide, carbonaceous residue, flame stability and coking were influenced by the nozzle's mixing chamber diameter and outlet number/diameter, angle and total area in order to optimize the design of the nozzle. Ultimately, an optimized nozzle was designed that achieved a self-sustaining PLB flame with good stability, low emissions and low coking. In addition, it allowed for "cold-starting" and pilot flame extinguishment at steady-state while maintaining stability.

M.A.S.

Advisors/Committee Members: Thomson, Murray, Mechanical and Industrial Engineering.

Subjects/Keywords: Biofuel Spray Combustion; Flame Stability; Internally Mixed Twin-Fluid Nozzle; Nozzle Design; Pyrolysis Liquid Biofuel; Sustainable ENergy; 0548

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APA (6th Edition):

Albert-Green, S. (2017). Understanding the Effects of Nozzle Design and Spray Characteristics for Optimizing Pyrolysis Liquid Biofuel Ignition and Combustion. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/79282

Chicago Manual of Style (16th Edition):

Albert-Green, Steven. “Understanding the Effects of Nozzle Design and Spray Characteristics for Optimizing Pyrolysis Liquid Biofuel Ignition and Combustion.” 2017. Masters Thesis, University of Toronto. Accessed November 22, 2017. http://hdl.handle.net/1807/79282.

MLA Handbook (7th Edition):

Albert-Green, Steven. “Understanding the Effects of Nozzle Design and Spray Characteristics for Optimizing Pyrolysis Liquid Biofuel Ignition and Combustion.” 2017. Web. 22 Nov 2017.

Vancouver:

Albert-Green S. Understanding the Effects of Nozzle Design and Spray Characteristics for Optimizing Pyrolysis Liquid Biofuel Ignition and Combustion. [Internet] [Masters thesis]. University of Toronto; 2017. [cited 2017 Nov 22]. Available from: http://hdl.handle.net/1807/79282.

Council of Science Editors:

Albert-Green S. Understanding the Effects of Nozzle Design and Spray Characteristics for Optimizing Pyrolysis Liquid Biofuel Ignition and Combustion. [Masters Thesis]. University of Toronto; 2017. Available from: http://hdl.handle.net/1807/79282

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