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Öğe Design and manufacturing of remote computer controlled automation system for the dry kiln(2012) Demir, O.; Kaya, M.In this study, a remote computer controlled automation system has designed and manufactured for dry kiln with sea water source heat pump. The following parameters in the dry kiln are temperature, humidity and changing of weight. The system components of related with these parameters: stopping and running of system, flow of sea water, input and output air vents of dry cabin and fans. The used temperature and humidity sensor SHT11 for the following system is running between the -40 °C and +128 °C. Loadcell which has 0.01 gr precision is used for the changing of weight. Automation board has been manufactured by using PIC18F4520 microcontroller. Moreover, TelitGT863-PY gprs module has been used for the transferring data of the automation board. In order to control automation system, user interface is generated with the help of C# programming language. The selection of product from user interface has provided that starting of drying process within the suitable parameters. Furthermore, system drying parameters can be installed to user interface manually. This property permits to dry the desired product under the conditions required. Thanks to user interface, real time data of temperature, humidity and pruduct weight are able to observed and recorded. Consequently, in the our manufacturing system, bay laurel is dried and it has been shown that obtained results are agreement with the results of literature. © Sila Science. All rights reserved.Öğe Effect of Zr Concentration on the Microstructure and Mechanical Performance of Porous Ti-Zr System by Powder Metallurgy(Trans Tech Publications Ltd, 2022) Karakurt, E.M.; Huang, Y.; Kaya, M.; Demirtas, H.; Cakmak, O.In this study, porous binary Ti-(x)Zr alloys of nominal Zr contents (x=10, 20 and 30 at. %) with differing porosities were manufactured, using powder metallurgy with compaction conducted under a pressure of 300MPa and sintering at 1200 ?C for 6 h. A space holder agent was employed to control the general porosity. The microstructures were characterized by scanning electron microscopy and energy dispersed spectroscopy. The phase constitution was done by X-ray diffractometer. Uniaxial compressive tests were performed to determine the mechanical behaviours. Microstructural studies revealed macro/micro pores generated were mostly irregularly shaped with a uniform pore size distribution in all Ti-(x)Zr (at. %) alloys. The finer microstructure was obtained with increasing Zr contents. The mechanical performances of the porous Ti-(x)Zr (at. %) binary systems were strongly influenced by Zr and general porosity. © 2022 Trans Tech Publications Ltd, Switzerland.Öğe Energy analysis of concentrated photovoltaic/thermal panels with nanofluids(International Journal of Thermodynamics, 2021) Dumrul, H.; Yilmaz, S.; Kaya, M.; Ceylan, I.In this study, a prototype system was established for location heating application and electricity generation through utilizing two concentrated photovoltaic thermal panels (CPV/T) possessing flat surface receivers connected in series with each other. The purpose of the system is to supply the heating needs of a room in winter season and to meet the electricity requirement of the equipment used in this system. In the analysis of the installed system, different refrigerants (10% mono propylene glycol + 90% water and 0.5% Al2O3-water nanofluid) were tested at three different flow rates (0.4 m3/h, 0.5 m3/h, 0.6 m3/h). Throughout the experiments, the fan-coil air outlet temperature used to heat the room was adjusted to 35 °C with an inverter and a process control device. The results attained from the experiments carried out using different fluids throughout different months and days (April-May) have demonstrated that the thermal and electrical efficiencies of the system are found to be in good agreement with each other when evaluated in terms of the fluids utilized. The highest electrical energy recovery was found as 268 W at 0.6 m3/h flow rate for propylene glycol-water mixture and 194 W at 0.5 m3/h flow rate for nanomixture. The total thermal energy efficiency for the system using different fluids was found to be around 22%. The total thermal energy gain of the system was also calculated as 2312 W at 0.6 m3/h for the propylene glycol mixture and 2041 W at 0.5 m3/h for the nanomixture. © 2021 International Journal of Thermodynamics. All rights reserved.Öğe Investigation of Interferon stimulated genes (ISGs) simultaneously in endometrium, corpus luteum (CL) and peripheral blood mononuclear cells (PBMCs) in early pregnant ewes(Wiley, 2015) Kiyma, Z.; Kose, M.; Ozel, C.; Hitit, M.; Atli, M. O.; Guzeloglu, A.; Kaya, M.[No abstract available]Öğe Preliminary investigation of microRNAs in ovine endometrium(Wiley, 2015) Kiyma, Z.; Hitit, M.; Ozel, C.; Sen, G.; Kose, M.; Guzeloglu, A.; Kaya, M.[No abstract available]Öğe Taguchi method based evaluation of process parameters effects on system performance in the computer controlled cold-hot therapy device with thermoelectric module(2012) Yavuz, C.; Sarikaya, M.; Yilmaz, S.; Kaya, M.This paper deals with an investigation of the effect and optimization of control parameters on the system performance in the computer controlled cold-hot therapy device with thermoelectric module. The experimental studies have been performed under varying water flow rate, operating voltage and ambient temperature using design of experiment. The experiments have been planned based on Taguchi's L18 orthogonal array with each trial performed under different conditions of water flow rate, operating voltage and ambient temperature. The optimum parameter combination has been obtained by using the analysis of signal-to-noise (S/N) ratio. The level of importance of the control parameters on the system performance has been determined by using analysis of variance (ANOVA). Main effect's plots have been utilized to optimize and analyze the relation between the control parameters and the system performance. In addition, regression analysis was applied to determine mathematical equations that indicate the relation between response and control factors. As a result of measured experimental values performed using the Taguchi orthogonal array. It was found that the operating voltage was the most significant factor affecting the surface temperature and temperature difference. The number of experiments in the same or similar area in heat transfer were reduced by using the Taguchi experimental design to define optimum points. Sufficient results were obtained so that they may be used in future academic and industrial researches. © Sila Science.
