Improved Atomization of Residual Fuels for Marine Boilers. Volume II: Cold Flow Baseline Performance Testing and Variation of Key Parameters - Cold Flow Improvement of Marine Boiler Atomizers

摘要

This report is a summary of work performed by C-E under Task 2 & 3 of the Maritime Administration sponsored R&PD project entitled Marine Boiler Atomizer Optimization Through Improved Atomizer Performance Measurement Techniques. The objectives of Tasks 2 & 3 include use of the improved atomizer performance measurement techniques developed under Task 1 to define the performance of a typical commercially sized marine 'Y' jet atomizer operating at design conditions in a cold flow (non-combusting) spray chamber using a suitable test fluid. The effects of fuel temperature, viscosity, supply pressure, atomizing media temperature, pressure, and relative flow was also defined. A sensitivity study was also completed to define the optimum geometry for an 'X' jet atomizer and a methodology has been developed for sizing a range of commercially sized atomizers. Droplet ballistics information is also presented describing droplet velocities and trajectories for a typical marine atomizer.