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This study presents energy and economic analysis of the wind turbine plant's draft for the Aksaray city. Fossil fuels are used for energy production that is giving the environmental damage and increasing the global warming. The countries utilize a renewable energy for decreasing the global warming's impacts. The wind energy is the one of the important renewable energy. In this study, drafting 1 [MW] of the wind turbine plant was calculated energy and economic analysis for the Aksaray city. When 1 [MW] of the wind turbine plant is set up, it was calculated production of energy quantity that was found 2628000 [kWh]. Cost of the total investment was obtained 1 698312 [$] and cost of the unit electric energy was found 0.052 [$/kWh]. The wind power plant's construction was calculated step by step that these values were found in with escalation way and without escalation way. According to these results, the units of the investment's cost, unit of the operation's cost, unit of the maintenance's cost were calculated for economic analysis. In conclusion, energy and economic analysis of the wind turbine plant's draft is the first academic study for the Aksaray city. According to the literature, building the wind energy plant between Ortaköy village and Ağaçören village can be suitable for the Aksaray city.

In this study, intake and exhaust cams were designed to perform the late intake valve closing (LIVC) Miller cycle operation (MA and MB cycles) using spline functions in a single-cylinder, four-stroke, spark-ignition (SI) engine. A special camshaft was manufactured and adapted to the engine to adjust valve opening and closing timings. The experiments were conducted at two different Miller cycle operation and the results were compared with Otto cycle. The tests were conducted between 1700-3200 rpm engine speed range at wide open throttle (WOT). In the experiments, the variation of brake torque, power output, specific fuel consumption (SFC), thermal efficiency, HC, CO, NOx emissions and exhaust gas temperature versus engine speed were investigated. More power output was obtained with Otto cycle than Miller cycles for all engine speeds. Brake torque and engine power decreased by 5.24%, and 1.17% respectively with MA cycle compared to Otto cycle at 2600 rpm engine speed. Thermal efficiency increased by 1.29%, while the SFC decreased 2.08 % with Otto cycle in comparison with MA cycle at maximum brake torque speed. HC and CO emissions increased by 6.48% and 11.66%, respectively with MA cycle compared to Otto cycle at the same operation condition. NOx emissions decreased up to 7.79% with MA cycle compared to Otto cycle due to the lower exhaust gas temperature at maximum brake torque engine speed of 2600 rpm.

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