Subjects -> ENERGY (Total: 414 journals)
    - ELECTRICAL ENERGY (12 journals)
    - ENERGY (252 journals)
    - ENERGY: GENERAL (7 journals)
    - NUCLEAR ENERGY (40 journals)
    - PETROLEUM AND GAS (58 journals)
    - RENEWABLE ENERGY (45 journals)

ENERGY (252 journals)            First | 1 2 | Last

Showing 201 - 400 of 406 Journals sorted alphabetically
Michigan Journal of Sustainability     Open Access   (Followers: 1)
Multequina     Open Access  
Natural Resources     Open Access  
Nature Energy     Hybrid Journal   (Followers: 34)
Nigerian Journal of Technological Research     Full-text available via subscription   (Followers: 1)
Nuclear Data Sheets     Full-text available via subscription  
Nuclear Engineering and Design     Hybrid Journal   (Followers: 16)
Oil and Energy Trends : Annual Statistical Review     Full-text available via subscription  
Oil and Gas Journal     Full-text available via subscription   (Followers: 12)
Open Journal of Energy Efficiency     Open Access   (Followers: 1)
Power Technology and Engineering     Hybrid Journal   (Followers: 3)
Proceedings of the Institution of Civil Engineers - Energy     Hybrid Journal   (Followers: 2)
Progress in Energy and Combustion Science     Hybrid Journal   (Followers: 15)
Progress in Nuclear Energy     Hybrid Journal   (Followers: 2)
Protection and Control of Modern Power Systems     Open Access   (Followers: 3)
Radioprotection     Hybrid Journal   (Followers: 1)
Science and Technology for Energy Transition     Open Access   (Followers: 3)
Science and Technology of Nuclear Installations     Open Access   (Followers: 3)
Smart Energy     Open Access  
Smart Grid and Renewable Energy     Open Access   (Followers: 9)
Solar Compass     Open Access   (Followers: 2)
Solar Energy     Hybrid Journal   (Followers: 20)
Solar Energy Advances     Open Access   (Followers: 3)
Solar Energy Materials and Solar Cells     Hybrid Journal   (Followers: 29)
South Pacific Journal of Natural and Applied Sciences     Hybrid Journal  
Strategic Planning for Energy and the Environment     Hybrid Journal   (Followers: 4)
Structural Control and Health Monitoring     Hybrid Journal   (Followers: 6)
Surface Science Reports     Full-text available via subscription   (Followers: 13)
Sustainable Energy     Open Access   (Followers: 2)
Sustainable Energy & Fuels     Hybrid Journal   (Followers: 2)
Sustainable Energy Technologies and Assessments     Full-text available via subscription  
Sustainable Energy, Grids and Networks     Hybrid Journal   (Followers: 4)
Technology and Economics of Smart Grids and Sustainable Energy     Hybrid Journal   (Followers: 1)
Technology Audit and Production Reserves     Open Access   (Followers: 1)
Turkish Journal of Energy Policy     Open Access  
Unconventional Resources     Open Access  
Universal Journal of Applied Science     Open Access  
Washington and Lee Journal of Energy, Climate, and the Environment     Open Access   (Followers: 1)
Waste Management     Hybrid Journal   (Followers: 13)
Water International     Hybrid Journal   (Followers: 19)
Wiley Interdisciplinary Reviews : Energy and Environment     Hybrid Journal   (Followers: 8)
Wind Energy     Hybrid Journal   (Followers: 4)
Wind Engineering     Hybrid Journal  
World Oil Trade     Hybrid Journal   (Followers: 2)

  First | 1 2 | Last

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Turkish Journal of Energy Policy
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2602-4659
Published by DergiPark Homepage  [185 journals]
  • Model of the combi boiler appliance in TRNSYS for domestic hot water
           circuit: Experimental and numerical validations of economic mode

    • Authors: Okan GÖK; Ayşe Uğurcan ATMACA, Hürrem Murat ALTAY, Aytunç EREK
      Abstract: Combi boiler type heating appliances are used nearly in every residential building for both space and domestic hot water (DHW) heating functions. There are challenging targets regarding both of these functions. Since there is a huge laboratory testing procedure behind each appliance design and the structural or operational changes on the regular designs, simulation models could be established for the initial evaluations of the appliance testing. Therefore, due to the estimations from the preliminary results of the simulations, the number of the laboratory tests could be decreased with cost, time, and energy savings. In this study, the main objective is modelling DHW heating circuit of a combi boiler appliance with the help of Transient System Simulation Tool (TRNSYS 18) to calculate DHW outlet temperature under various operating conditions. The TRNSYS model is validated experimentally and compared with the previous works of the authors. A good agreement is achieved in both transient and steady-state regions and the TRNSYS model is found superior when compared to the previously established one-dimensional model of the authors. DHW circuit model is validated only for economic (eco) working mode simulations in this study. Mean absolute error (MAE), mean square error (MSE), and root mean square error (RMSE) values are compared for the outcomes of the previously constructed one-dimensional model and currently established TRNSYS model with reference to the experimental data. TRNSYS model decreases all of these errors calculated according to the overall temperature profiles including the transient region for the central heating water at the heat cell inlet, central heating water at the heat cell outlet, and the inlet and outlet temperature difference of DHW at the experimentally investigated DHW flow rates of 5 l/min, 7 l/min, and 8.7 l/min.
      PubDate: Fri, 24 Mar 2023 00:00:00 +030
  • A comprehensive survey of the urban building energy modeling (UBEM)
           process and approaches

    • Authors: Melik Ziya YAKUT; Sinem ESEN
      Abstract: Fossil fuels increase the emission values of greenhouse gases such as CO2 in the atmosphere and cause global warming and climate change. At the same time, fossil fuel reserves are facing depletion in the near future, and energy supply also has an important dimension such as national security and foreign dependency. All these show that turning to renewable energy sources and developing solutions and policies for energy saving has become a necessity both globally and locally. For such reasons, modeling of urban structures, which have a great contribution to energy consumption, and simulating the energy demand on an urban scale are of great importance for the effective use of energy. Research on this has shown that UBEM (Urban Building Energy Modeling) is an effective solution to these problems. However, UBEM contains different technical problems for implementation. Due to its versatility, various concepts related to this field lead to complexity. With this increasing complexity, there is a growing need to compile concepts from a holistic perspective. In this study, it is aimed to create a solution to these challenges. For this purpose, a comprehensive and up-to-date research of various modeling approaches and model creation process used in urban building energy modeling has been conducted. Studies on these approaches are summarized and a systematic review of the literature is made. At the same time, the study is in the nature of guiding and forming the general knowledge level with the basic concepts that should be known to those who will work on UBEM.
      PubDate: Fri, 24 Mar 2023 00:00:00 +030
  • Small hydropower development in Turkey: An overview of 2021

    • Authors: Alaeddin BOBAT
      Abstract: Hydropower plants with an installed capacity of less than 10 MW are widely considered as small hydropower (SHP) in Turkey. There are currently 371 SHPs in operation as of 31 December 2021. Of these, 14 are operated by the DSI and 357 are operated by the private sector; and the installed capacity of the operating SHPs is 1.756,69 MW, their total generation potential is 6.643,44 GWh/year. Moreover, 12 SHPs are under construction. In addition, 625 SHP projects of 2.645,56 installed capacities and of 8.728,460 GWh/year generations potential were cancelled. Regionally, 34.50 % of SHPs (128 SHP) is located in the Black Sea Region of Turkey. 20.75 % of them (77 SHP) is located in the Mediterranean Region; 16.71 % (62 SHP) in the Eastern Anatolia Region; 12.94 % (48 SHP) in the Central Anatolia Region; 8.09 % (30 SHP) in the Marmara Region; 6.2% (23 SHP) in the Aegean Region and 0.08 % in the South-East Region. This article intends to discuss SHP’s in 2021 of Turkey as a whole and examine the place and importance of SHP’s in the sector.
      PubDate: Fri, 24 Mar 2023 00:00:00 +030
  • Ensuring energy balance for sudden demand changes in smart grids

    • Authors: Ahmet KARYEYEN; Nurettin ÇETİNKAYA
      Abstract: With the increasing diversity in the use of electrical energy and the inclusion of renewable electricity power plants in the system, more efficient and more controllable electrical power systems are provided by smart grid technologies. Load balance based on pricing in electrical power systems; It is a strategy that takes into account customer demands, enables customers to use electrical energy at the most attractive price, and provides suppliers with the desired profit, that is, in summary, it coordinates the efficient operation of energy systems. In this study; While load balance is created with smart grid technology, demand-supply-price balance is achieved by using an optimum Fuzzy Logic PI controller within a closed-loop electric power control system model. Within the scope of the study, the simulation results obtained by applying 6 different demand scenarios to the power system model consisting of different types of generation resources were given graphically and analyzed. The different demand scenarios applied include difficult demand conditions such as possible sudden increase or decreases in demand in the electrical power system.
      PubDate: Fri, 24 Mar 2023 00:00:00 +030
  • Effect of material on efficiency in alternators used in wind energy

    • Authors: Kadir YILMAZ; Taner DİNDAR
      Abstract: It is seen that the use of wind energy as a renewable energy source in the world has increased recently. In addition to this, power plants are established for the production of high power electricity and the energy produced is given to the grid. However, in a region far from the urban area, electrical energy can be produced at small power levels. Radial flux permanent magnet alternators are the most widely used to generate electrical energy at small powers. Therefore, in this study, the effect on the efficiency of the materials used in radial flux permanent magnet alternators was investigated. Time savings can be achieved by analyzing the alternators used for the energy to be produced. The analyzes taken from the program contribute to the studies and may cause small deviations in real applications. In our study, considering the B-H characteristics of ferromagnetic materials, the effects of variable stator, rotor and magnet materials on the output performance were examined and comparisons were made by choosing the configuration with the best efficiency as a result of the optimization made. According to the graphical results obtained, time and cost savings were achieved.
      PubDate: Fri, 24 Mar 2023 00:00:00 +030
  • Simulation of a PV module at different set-up and operating conditions to
           give I-V and P-V curves

    • Authors: Anas BALA; Jamilu Ya'u MUHAMMAD, Kadawa Ibrahim ALİ, Richard Balthia MSHELLİA
      Abstract: Solar energy is among the source of energy that is reliable, available and non-harmful to the society. The output of solar photovoltaic system can be improved by means of solar tracking system either mechanically or electrically. The low conversion efficiency of PV modules, which is significantly impacted by operational conditions, is the primary constraint of PV systems. The financial risk of installing a system for maximum power output is increased by improper assessment of PV module at various configurations and operating conditions and the performance of solar modules strongly depends on the temperature of the solar modules. This present work investigates the effect of temperature on PV module using Scilab XcosTM simulation software at different setups and operating conditions to give I-V and P-V curves in order to evaluate its output performance. The results of the simulations show that the voltage across the PV module at open circuit and current produced at short circuit increased with increasing the solar irradiance harnessed by the solar module from 700W/m2 to 1000W/m2 at constant temperature of 25 oC thereby increasing the maximum output power of the PV module. The results also revealed that using standard test condition (STC) parameters at different operating conditions of PV module the increment of short circuit current is more significant as open circuit voltage than current produced at short circuit.
      PubDate: Fri, 24 Mar 2023 00:00:00 +030
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762

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