Analysis of Exhaust Gases from Marine Propulsion Plants Using Diffraction-Based Analytical Methods

This research deals with one of the most important environmental security issues of energy production media and equipment used in the marine field, primarily marine diesel engines used to propel ships. Initially, information was collected regarding the specific standards for the quantities and components of harmful substances emitted with the exhaust gases from marine Diesel and Gase Turbin engines. Then, modern methods for monitoring exhaust gases were reviewed, which depend on the diffraction analysis of the stream of materials present in these gases and the gas transmitters used for this purpose. The method presented in this research depends on determining the components of the gas mixture based on the linear equivalence hypothesis adopted in the thermal diagrams and applying this hypothesis in the device that was designed, which is a device for analyzing exhaust gases emitted by marine diesel engines using sensors that depend on semiconductor technology. This report includes the initial and structural drawings of the designed device, description of its basic components, test results of the device, and method of calibrating and adjusting the thermal diagrams. To solve the mathematical problems during the collection and processing of data, the method of the system of equations with decreasing degrees and the method of linear programming were used, which allows to verify the accuracy of the sequence of the algorithm for solving the problem. The algorithm of the device’s operation is also included, with some test examples for determining the components of the gas mixture emitted by marine Diesel and Gase Turbin engines.