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Bölüm: Batman Üniversitesi Teknoloji Fakültesi Enerji Sistemleri Mühendisliği Bölümü × Dil: en ×

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  • Küçük Resim
    Öğe
    Performance analysis of temperature changes of fuels used in pem fuel cell
    (Batman Üniversitesi, 2022-12-31) Demir, Merve; Yılmaz, Adem
    In this study, the temperature values of the fuels used in Polymer Electrolyte Membrane (PEM) fuel cell were determined and the optimum temperature ranges were obtained for these fuels. Pure hydrogen and oxygen were used in the anode and cathode portions. In this study, moisture was taken as 40%, hydrogen amount as 0.3 ml/min and oxygen amount as 0.5 ml/min. Line temperature values in the system were also tested between 40-80°C with a 5°C difference. In the experiments carried out at 40°C, when the voltage value was taken as 0.442V and the current value was taken as 1.81A, the power value obtained in the system was found to be 0.804W. In the experiment, when the current value is 1.8A and the voltage value is 0.535V at 75°C, the power value in the system is found to be 1.025W. The lowest W value was calculated as 0.804W at 40°C and the highest W value was calculated as 1.025W at 75°C.
  • Küçük Resim
    Öğe
    Analysis of combustion characteristics of a LHR-STD diesel engine fuelled with biofuel and diesel fuel
    ((SSRG-IJTE), 2017-04) Aydın, Hüseyin; Aydın, Selman; Sayın, Cenk; Yakut, Rıfat
    It is important to efficiently use of alternative fuel in CI (compression ignition) engine, because of the lack of energy shortages will be in the present and coming years. Therefore this study, the top surfaces of the piston, exhaust and inlet valves of a four-stroke, direct injection, single cylinder CI engine was coated with a mixture of insulation materials by use of plasma spray method. After that, determine of combustion characteristics of standard (STD) CI engine and the low heat rejection (LHR) CI engine were tested under the same experimental conditions and the same experimental setup, fuelled with the WB20, WB100 and DF fuels. The results of both engines are compared with each other so that analyze how this modification is effect on the combustion parameters. Experimental results showed that LHR diesel engine generally is partly similar to STD diesel engine in terms of the knock density, mass burning rate, average gas temperature, velocity of heat transfer, coefficient of heat transfer and total heat transfer.