Yazar "Akyol, Uğur" için listeleme
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Bir ekonomizer tasarımı ve nümerik analizi
Çakar, Nihal (Tekirdağ Namık Kemal Üniversitesi, 2022)Atık ısı ile birlikte kazan besi suyunun ısıtılmasını ve enerji geri kazanımını sağlayan ısı değiştiricileri ekonomizer olarak adlandırılmaktadır. Bu çalışmada, atık ısının sisteme geri kazandırılma yöntemleri ve ekonomizer ... -
Dental uygulamalarda yumuşak doku genişletici hidrojellerin sentezi, karakterizasyonu ve şişme kinetiği
Güder, Ömer Faruk (Tekirdağ Namık Kemal Üniversitesi, 2021)Hidrojeller, su absorplama ve desorplama yeteneğine sahip hidrofilik homopolimer veya kopolimerlerden meydana gelen çapraz bağlanmış üç boyutlu ağ yapılarıdır. Doğal veya sentetik polimerlerden ya da her ikisinin belirli ... -
Design of air cooling unit with PCM
Susantez, C.; Akyol, Erhan; Hacıhafızoğlu, Oktay; Akyol, Uğur (Institute of Physics Publishing, 2019)In this paper a heat absorption unit has been designed to cool the entering hot air. For this aim, five slabs of PCM (Phase change material) have been used inside the cooling unit. The velocity and temperature values of ... -
Determination of optimum operating conditions and simulation of drying in a textile drying process
Akyol, Uğur; Kahveci, Kamil; Cihan, Ahmet (Taylor & Francis Ltd, 2013)In this study, drying behavior of viscose yarn bobbins was investigated experimentally to specify the optimum drying conditions and a drying model was proposed for simulation of drying. The experiments were conducted in a ... -
Drying Behavior of Cultured Mushrooms
Çelen, Soner; Kahveci, Kamil; Akyol, Uğur; Haksever, Ayşen (Wiley, 2010)In this study, the drying behavior of cultured mushrooms with an initial moisture content of 93% (drying basis [d.b.]) was investigated experimentally for different slice thicknesses and drying air temperatures, and the ... -
Drying Behavior of Polyester Based Yarn Bobbins in a Hot-Air Bobbin Dryer
Cihan, Ahmet; Kahveci, Kamil; Akyol, Uğur; Akal, Dinçer (Trans Tech Publications Ltd, 2011)Drying behavior of polyester based yarn bobbins (67% polyester, 33% viscose) was simulated for different drying air temperatures by a simultaneous heat and mass transfer model. In the model, it was assumed that mass transfer ... -
Drying kinetics of cotton based yarn bobbins in a pressurized hot-air convective dryer
Akal, Dinçer; Kahveci, Kamil; Akyol, Uğur; Cihan, Ahmet (Sage Publications Ltd, 2017)In this study, the drying kinetics of cotton bobbin drying process in a pressurized hot-air convective bobbin dryer was investigated, and a drying model was introduced for the simulation of drying. Tests were conducted for ... -
Effect of Some Factors on Solution Sensitivity in Determination of Temperature Field by Finite Difference Method for the Drying Process of Yarn Bobbins
Akyol, Uğur; Karakoca, Alper; Shaliyev, Rafayel (Namık Kemal Üniversitesi, 2018)In this study, a mathematical model for the drying process of dyed wool yarn bobbins by passing hot air through them has been presented. The presented mathematical model reduced the drying problem to a nonlinear, nonstationary ... -
Estimation of power output and thermodynamic analysis of standard and finned photovoltaic panels
Akyol, Uğur; Akal, Dinç; Durak, Ahmet (Bellwether Publishing, Ltd., 2021)This study deals with the estimation of power output and also thermodynamic analysis of two different photovoltaic panels. One of the panels is a standard photovoltaic module without fins (SPV), and the other one is a ... -
Experimental and numerical investigation of heat transfer in a channel with multiple phase change materials (PCMs)
Akyol, Erhan; Hacıhafızoğlu, Oktay; Susantez, Çiğdem; Kahveci, Kamil; Akyol, Uğur (Elsevier Ltd, 2022)In this study, the thermal performance of an air-phase change material (PCM) unit used in free cooling applications was examined experimentally and numerically by Comsol finite element simulation software. Effects of the ... -
Investigation of drying kinetics of viscose yarn bobbins
Akyol, Uğur; Akal, Dinçer; Cihan, Ahmet; Kahveci, Kamil (2011)This study is concerned with the investigation of the suitability of several empirical and semi-empirical drying models available in the literature to define drying behavior of viscose yarn bobbins. For this purpose, ... -
Investigation of the effect of drying air temperature on drying time by numerical method for textile bobbins
Akyol, Uğur; Karakoca, Alper; Shaliyev, Rafayel; Akal, Dinç; Uzuneanu, Krisztina (Institute of Physics Publishing, 2019)Drying of the yarn bobbins in the textile sector is a very important stage among the textile finishing processes. Because this process takes a lot of time and causes a large amount of energy consumption. In this study, ... -
A mathematical model for through-air drying process of yarn bobbins
Akyol, Uğur; Karakoca, Alper; Shaliyev, Rafayel; Kahveci, Kamil; Cihan, Ahmet (Taylor and Francis Ltd., 2021)In this study, a mathematical model has been developed to simulate the through-air drying process of yarn bobbins. For this purpose, experimental data was obtained in a prototype experimental set up by passing pressurized ... -
A model for predicting drying time period of wool yarn bobbins using computational intelligence techniques
Akyol, Uğur; Tüfekçi, Pınar; Kahveci, Kamil; Cihan, Ahmet (Sage Publications Ltd, 2015)In this study, a predictive model has been developed using computational intelligence techniques for the prediction of drying time in the wool yarn bobbin drying process. The bobbin drying process is influenced by various ... -
Research on the fire endurance of the silica sand membrane
Kaya, A.; Çelen, Soner; Akyol, Uğur (Institute of Physics Publishing, 2019)In this study, the fire endurance, density, low-temperature deflection, penetration and ring-ball method tests of the membrane produced throughout the mixing of Bitumen, IPP (isotactic polypropylene), LDPE (Low-density ... -
A review of new technologies in valve systems of internal combustion engines and their effects
Akal, Dinçer; Akyol, Uğur; Uzuneanu, Krisztina (Institute of Physics Publishing, 2019)Efficient use of energy is becoming increasingly crucial due to global warming and depleting fossil fuel sources. Automotive manufacturers aim for fuel economy, reduction of exhaust emissions, durability, volume and weight ... -
Simulation and thermodynamic analysis of a hot-air textile drying process
Akyol, Uğur; Akan, Ahmet Erhan; Durak, Ahmet (Taylor & Francis Ltd, 2015)This paper is concerned with the simulation of drying behavior of wool yarn bobbins and also determination of the optimum operating conditions by using thermodynamic analysis. Firstly, experimental drying behavior of wool ... -
Simulation of Drying Behavior of Cotton Bobbins by a Simultaneous Heat and Mass Transfer Model
Akyol, Uğur; Kahveci, Kamil; Cihan, Ahmet; Akal, Dinçer (Trans Tech Publications Ltd, 2011)In this study, the drying process of cotton bobbins for different drying air temperatures has been simulated by a simultaneous heat and mass transfer model. In the model, the mass transfer is assumed to be controlled by ... -
Single Layer Drying Behavior of Apple Slices in a Microwave Dryer
Çelen, Soner; Kahveci, Kamil; Akyol, Uğur (Trans Tech Publications Ltd, 2011)In this study, the drying behaviour of single layer apple slices of 5mm thickness in a microwave dryer was investigated experimentally for four different microwave power levels (90 W, 180 W, 360 W and 600 W) and suitability ... -
A software for calculation of optimum conditions for cotton, viscose, polyester and wool based yarn bobbins in a hot-air bobbin dryer
Kuşçu, H.; Kahveci, Kamil; Akyol, Uğur; Cihan, Ahmet (2012)In this study, a software has been developed to predict the optimum drying conditions of viscose, wool, polyester and cotton based yarn bobbins for drying in a pressurized hot air dryer. For this purpose, firstly, a suitable ...