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Title	An Experimental Study of the Burning Spray of an Unstabilized Synthetic Oil Water Emulsion
Creator	Gollahalli, S. R.; Siddiqui, N.
Publisher	Digitized by J. Willard Marriott Library, University of Utah
Date	1984
Spatial Coverage	Tulsa, Oklahoma
Abstract	A comparative study of the temperature and composition characteristics of the burning twin fluid atomized sprays of a petroleum based fuel (No. 2 oil), a coal derived fuel (SRC-II), and their unstabilized emulsions with water is described. The flame temperature and the concentrations of CO, NO, 0«, and S0? have been measured and their radial profiles are presented. The results show: (a) the oxygen utilization was lower in the SRC-II oil flame than in the No. 2 oil flame; (b) the concentration of CO was lower and NO higher in the SRC-II oil flame than those in the No. 2 oil flame; and (c) the S0? concentrations were approximately the same in both. The emulsification of both SRC-II and No. 2 oil with water decreased CO concentrations in their flames. However, the emulsification increased S0? and NO concentrations only in the No. 2 oil flame and did not change them significantly in the SRC-II oil flame.
Type	Text
Format	application/pdf
Language	eng
Rights	This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications	Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician	Cliodhna Davis
ARK	ark:/87278/s6fn18rn
Setname	uu_afrc
ID	1511
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6fn18rn

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Title	Page 3
Format	application/pdf
OCR Text	Show 1.3.3 emulsification with water may affect their flame characteristics differently. The study presented in this paper was performed to determine the effects of emulsification on the spray flame characteristics of a coal-derived synthetic fuel (SRC-II - a blend of middle and heavy distillate) and compare them with the effects of emulsification on the flame characteristics of a corresponding grade petroleum fuel (No. 2 oil). The results include the radial profiles of the concentrations of NO, CO, (L, and SO-, and temperature at the end-plane of airblast atomized burning sprays of the two fuels. The tests were intended to understand how the overall flame characteristics change when a synthetic fuel or its emulsion with water is substituted for a petroleum fuel in a practical burner at a constant energy input rate. Hence, no attempts were made to incorporate artificial constraints such as equality of drop-size distribution in designing the experiment. However, the fluid dynamics of the burner were kept constant while changing the fuels in order to make the observed changes attributable to the type of fuel only. EXPERIMENTAL The experiments of this study were performed with an airblast atomizer shown in Figure 1. This atomizer nozzle developed a hollow spray with a cone angle in the range of 45-55° depending on the operating conditions. The nozzle was placed at one end of a horizontal chamber of rectangular cross-section (37 cm x 36 cm) and length 205 cm. The pressure in the chamber was essentially atmospheric. Electrically preheated air was supplied to this chamber to maintain an average velocity of 1.1 m/s over the test section. A honeycomb structure and several screens mounted
Setname	uu_afrc
ID	1491
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6fn18rn/1491