الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The problem of designing and constructing a Stirling engine is still insufficiently studied. The objective of this research is to manufacture a small Alpha Stirling engine with the ability of changing some of engine parameters to achieve the optimum running and best performance.
The optimization was conducted using Schmidt analysis method directly incorporating the working engine data which was designed and tested with primary values of phase angle = 90° and swept volume ratio = 1. The optimum phase angle was found to be 83° while the optimum swept volume ratio was 0.776. Also the effect of dead volume ratio was explored, and was found to affect the optimized phase angle and swept volume ratio. Four cases with different dead volume ratios are considered. The temperature ratio was also varied to examine its effect on the optimization process. Two temperature ratios were considered, and were found to have little effect on the phase angle optimization but greatly affected the swept volume ratio optimization. Further, the charge pressure effect on the optimization of phase angle and swept volume ratio was examined and its effect was negligible but of course it affected the cycle work. Changing phase angle or swept volume ratio does not affect optimization of each other according to Schmidt method of analysis.
A second order analysis was conducted for the engine. The second order analysis results were different from Schmidt analysis results. The effect of dead volume ratio on the engine performance was checked and found to affect the optimization process for highest efficiency and highest power for every parameter.
For the same engine dimensions and volume it was found that the maximum efficiency can be raised from 29.55% to 45.46% by only reducing the dead volume and optimize the phase angle as well as the swept volume ratio. The engine power also can be raised from 9.36 W to 50.64 W with the new optimized parameters: dead volume ratio of 0.41, swept volume ratio of 0.86 for higher efficiency and 0.7 for higher power, with phase angle of 69° for higher power and 73° for higher efficiency.