Combustion of Drops and Sprays of Heavy Fuel Oils and Their Emulsions.
Abstract
An investigation was made to understand the combustion behavior of heavy fuels (No. 4 and No. 6 oils) and their emulsions. This study is an extension of an earlier study on a distillate fuel (No. 2) and its emulsion, and has been carried out in four parts: (1) study of emulsion characteristics, (2) single drop combustion experiments of No. 4 oil and its emulsions; (3) spray experiments of No. 4 and No. 6 oils and their emulsions; and (4) theoretical studies of single drop combustion. The effects of water content and the coupling influences of injection temperature, chamber temperature, chamber pressure, chamber oxygen content, and injector opening pressure are examined. The results show that unsupported drops of emulsions of heavy fuels with water also undergo fragmentation. Disruption time of emulsion drop increases with gravity of the fuel and decreases with the increases of injection temperature, chamber oxygen concentration, and chamber temperature. It is also seen to attain a minimum value at a water content of about 8% (by volume) under the conditions of this study. The completeness of combustion, soot and nitrogen oxide emissions of the heavy fuel sprays are affected by emulsification. The first year's effort was presented in Report Nos. DOD/RSPA/DPB-50/80/1 and 80/2, dated January 1980, NTIS Nos. PB-80-178213 and PB-80-178221, respectively.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1980
- Accession Number
- ADA095612
Entities
People
- M. L. Rasmussen
- S. M. Salek
- S. R. Gollahalli
Organizations
- University of Oklahoma