Mohd Farid Zainudin creator text theses my Kuantan, Pahang UMP 2015 monographic eng

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xxiv, 179 p. : ill. (some col.) ; 30 cm. + 2 CD ROM The developments and improvements of Stirling engine have demonstrated as one of the significant solutions in minimizing the environmental problems; the increases in global emissions level as instance. The utilization of Stirling engine especially for energy conversion process provides significant advantages due to its low emissions level, adapt to various types of heat sources, high thermal efficiency and easy to be constructed. In general, the Stirling engine was widely used in thermal-to-mechanical energy conversion, for instance in parabolic Dish-Stirling system. From the previous local development of rhombic drive beta-configuration Stirling engine prototype for parabolic Dish-Stirling system, an extensive engine’s volume based on multi-cylinder arrangement and small phase angle setting showed a stagnant progress during prototype field test. Based on the previous design limitations, a small capacity single-cylinder rhombic drive beta-configuration Stirling engine was proposed, developed and tested. The development of single-cylinder rhombic drive beta-configuration Stirling engine began with a preliminary study on main rhombic drive geometrical parameters of the previous engine design. The preliminary study was conducted to analyse the effects of different crank offset radius and connecting rod length to the engine phase angle, engine stroke, and eccentricity ratio. Based on the preliminary study, the crank offset radius and connecting rod length were determined by the considerations of suitable eccentricity ratio and optimum 90-degree engine phase angle setting for achieving maximum power output. After finalizing the overall rhombic drive geometrical parameters, a 3D engine model is developed for the prototyping process. For the thermodynamic cycle evaluation, a simulation method of an ideal adiabatic condition is carried out to evaluate the thermodynamic performance of the proposed design. From the simulation results, the proposed engine design produced 805 W of indicated power at 300 rpm, and 50.1 % of indicated thermal efficiency based on 90 degree phase angle setting, 893 K of expansion space’s temperature and 303 K of cold space’s temperature. After completing the components prototyping process, a preliminary prototype test was conducted to observe and analyse the functionality of the proposed design by using LPG as a heat source. After performing several design modifications and refinements, the developed Stirling engine prototype was able to operate at average speed of 321 rpm based on expansion space temperature at 873 K and cold space temperature at 305 K. Based on the workable prototype, the development of single-cylinder rhombic drive Stirling engine shows significant improvements in minimizing the components inertial and frictions, as well as the requirement of high operating temperature for the engine’s expansion space. However, further investigations and design improvements are needed so that the Stirling engine could be integrated with alternative energy sources such as solar, biomass or waste heat energy sources. specialized Mohd Farid Zainudin Faculty of Mechanical Engineering Thesis (Master of Engineering in Mechanical Engineering) -- Universiti Malaysia Pahang – 2015 Bibliography : p. 142-147 Stirling engines Design and construction THE0007792(Local) UMP 151005 20251117113434.0 vtls000091405