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Analytical investigation on Effect of Nanofluid Usage on Temperature Distribution in Double Pipe Heat Exchangers
Kursun, Burak; Ornek, Bulent Nafi; Okten, Korhan; Colak, Merve (CENTRE ENVIRONMENT SOCIAL & ECONOMIC RESEARCH PUBL-CESER, 2018)Heat exchangers are used in many industrial areas for the purpose of meeting the heat transfer requirement. The widespread use of heat exchangers has led to a number of designs for increasing the heat transfer in the heat ... -
ANALYTICAL MODEL FOR ESTIMATION OF TEMPERATURE DISTRIBUTION IN PARALLEL AND COUNTER FLOW DOUBLE PIPE HEAT EXCHANGERS
Kursun, Burak; Ornek, Bulent Nafi; Okten, Korhan (YILDIZ TECHNICAL UNIV, 2017)Heat exchangers are a widely used as a device for meeting the heat transfer requirement in industrial applications. Many types of innovative heat exchanger designs have been implemented with the aim of increasing heat ... -
Comparative Analysis of Hybrid and Active Cooling Systems for Concentrated Photovoltaic Panels Using a 1-D Mathematical Model: A Distinctive Perspective
Simsek, Engin; Okten, Korhan (Springer Heidelberg, 2025)An essential factor influencing photovoltaic (PV) panel performance is its operating temperature. Various active and passive cooling methods have been explored in the literature to mitigate the effects of high operating ... -
Comprehensive energy, exergy, and economic analysis of the scenario of supplementing pumped thermal energy storage (PTES) with a concentrated photovoltaic thermal system
Kursun, Burak; Okten, Korhan (Pergamon-Elsevier Science Ltd, 2022)The pumped thermal energy storage (PTES), which is designed to store electricity more cheaply, is one of the issues that have been discussed in recent years. In the PTES system, electrical energy is stored as hot water ... -
Development of an analytical model to investigate temperature distribution and melt geometry in the laser powder bed fusion process under different operating parameters
Okten, Korhan; Ornek, Bulent Nafi; Biyikoglu, Atilla (Aip Publishing, 2025)Laser powder bed fusion (L-PBF) fabricates components by melting layers of metal powder. Consequently, it has the potential to induce interparticle air gaps or generate unpredictable stresses. As such, understanding ... -
Development of thermal model for the determination of SLM process parameters
Okten, Korhan; Biyikoglu, Atilla (Elsevier Sci Ltd, 2021)In this study, a mathematical model is developed for determining the process parameters used in the manufacturing process of powder materials with selective laser melting method. Although the studies carried out to date ... -
Effect of rectangular hot water tank position and aspect ratio on thermal stratification enhancement
Kursun, Burak; Okten, Korhan (PERGAMON-ELSEVIER SCIENCE LTD, 2018)Thermal stratification is an important factor increasing the efficiency of hot water storage tanks used for thermal energy storage. In this study, the effects of the position of a rectangular hot water tank and the aspect ... -
Effects of Ambient Relative Humidity and Temperature on the Performance of Rock Wool Insulation Material
Okten, Korhan; Ozdemir, Adem Oguzhan; Ozturk, Ertugrul; Demir, Hatice; Ozdemir, Mustafa (Gazi Univ, 2022)Insulation is a quite common application used in residential. Also rock wool material is one of the preferred insulation materials in insulation applications due to its many advantages. In this study, the performance of ... -
Experimental Investigation of the Performance of Porous Insulation Materials Under Temporary Humidity
Okten, Korhan; Ozdemir, Mustafa (Amer Inst Aeronautics Astronautics, 2021)To decrease the heating and cooling demand of a building, thermal insulation is a well-known method. The properties of insulation materials are affected by many environmental factors, such as temperature and humidity. In ... -
Improving the thermo-economic performance of a pumped thermal electricity storage (PTES) with a hybrid thermal integration scenario consisting of solar energy and waste heat
Kursun, Burak; Okten, Korhan (Elsevier, 2024)The pumped thermal electricity storage system stores electrical energy in the form of thermal energy and, when needed, converts the thermal energy back into electrical energy. The lack of geographical constraints and its ... -
Numerical Analysis of the Influence of Trapezoidal Geometry in Phase Change Material Containers on Temperature Distribution in Concentrated Photovoltaic Panel Cooling
Okten, Korhan; Balta, Mehmet; Kursun, Burak (Springer Heidelberg, 2024)In concentrated photovoltaic (PV) panels, the amount of waste heat generated increases due to the higher incident radiation on the panel surface, leading to a decrease in PV panel efficiency. Therefore, PV-PCM (Phase Change ... -
Thermo-economic assessment of a thermally integrated pumped thermal energy storage (TI-PTES) system combined with an absorption refrigeration cycle driven by low-grade heat source
Okten, Korhan; Kursun, Burak (Elsevier, 2022)The pumped thermal energy storage system (PTES), which offers cheaper storage of electrical energy, has been a widely discussed issue in the literature recently. Unlike the literature studies, in this study, an absorption ... -
Variation of thermal stratification, first and second law efficiency due to the use of porous media in hot water tank
Okten, Korhan (Taylor & Francis Inc, 2022)Thermal energy storage tanks are one of the widely used energy storage systems. In these systems, thermal stratification and energy storage capacity are the most important parameters affecting system performance. In this ...
