二流体アトマイザの最適微粒化条件に関する一考察

概要

論文の詳細を見る
A combustion evaluation concept is introduced on the basis of the spray droplet size distributions in order to determine the optimum atomizing condition for combustion efficiency. The Combustion Index CI to predict the combustibilities is then defined using the dimensionless parameter Stk (Stokes number) which analyzes the trajectories of spray droplets. This is a very useful prediction method to evaluate the combustibilities of CWMs. However the application to various liquids appears to be invalid, since the droplet size distributions of typical fuel oils are different from those of CWM. The major objective of this study is to apply this prediction method to"more homogeneous"liquid. The atomizing tests for fuel oil are carried out varying the air/fuel ratio and liquid flow rate. Based on the results, the CI developed for CWM is then modified to predict the optimum atomizing condition for fuel oil. The predicted results are verified by heavy oil combustion tests.
社団法人日本機械学会の論文
1988-10-25