Search

Due to acute problems caused by fossil fuels that threaten the environment, conducting research on other types of energy carriers that are clean and renewable is of great importance. Since in the past few years hydrogen has been introduced as the future fuel, the aim of this study is to evaluate wind and solar energy potentials in prone areas of Iran by the Weibull distribution function (WDF) and the Angstrom-Prescott (AP) equation for hydrogen production. To this end, the meteorological data of solar radiation and wind speed recorded at 10 m height in the time interval of 3 h in a five-year period have been used. The findings indicate that Manjil and Zahedan with yearly wind and solar energy densities of 6004 (kWh/m2) and 2247 (kWh/m2), respectively, have the greatest amount of energy among the other cities. After examining three different types of commercial wind turbines and photovoltaic (PV) systems, it becomes clear that by utilizing one set of Gamesa G47 turbine, 91 kg/d of hydrogen, which provides energy for 91 car/week, can be produced in Manjil and will save about 1347 L of gasoline in the week. Besides, by installing one thousand sets of X21-345 PV systems in Zahedan, 20 kg/d of hydrogen, enough for 20 cars per week, can be generated and 296 L of gasoline can be saved. Finally, the RETScreen software is used to calculate the annual CO2 emission reduction after replacing gasoline with the produced hydrogen. [ABSTRACT FROM AUTHOR]

The present study was conducted with the objective of evaluating several proposed turbines from 25 kW to 1.65 MW in order to select the appropriate turbine for electricity and hydrogen production in Firuzkuh area using the decision making trial and evaluation (DEMATEL) and data envelopment analysis (DEA) methods. Initially, five important factors in selection of the best wind turbine for wind farm construction were determined using the DEMATEL technique. Then, technical-economic feasibility was performed for each of the eight proposed turbines using the HOMER software, and the performance score for each proposed wind turbine was obtained. The results show that the GE 1.5sl model wind turbine is suitable for wind farm construction. The turbine can generate 5515.325 MW of electricity annually, which is equivalent to $ 1103065. The average annual hydrogen production would be 1014 kg for Firuzkuh by using the GE 1.5sl model turbine. [ABSTRACT FROM AUTHOR]

Hydrogen is one of these sources that no acceptable assessment of its technical - economic production feasibility has been done yet in various regions of Iran. Accordingly, the present study has been carried out aiming at technical-economic feasibility of establishing hybrid photovoltaic-wind power plant to produce electricity and hydrogen using Homer software for Hendijan area in the South West of Iran. The findings of the technical-economic feasibility study shows that the area under study annually produces 3,153,762 kW h of electricity for a Photovoltaic-wind power hybrid system, and 31,680 kg of hydrogen for constructing a hybrid system consisting of: wind turbine model GE 1.5sl, a 4-kilowatt photovoltaic system and a 100 kg hydrogen tank. Furthermore, technical-economic assessment shows that establishment of hybrid plant in the area under study is confirmed. The results illustrate the feasibility and effectiveness of implementing wind and solar energy for hydrogen production [ABSTRACT FROM AUTHOR]

The knowledge of wind speed characteristics of a region is among the most important aspect of wind turbines utilization for electricity production and assessing the cost of power generation. The wind spectrum and the wind power density for the city of Chabahar located in the southeastern part of Iran were modeled using Weibull distribution and power law estimation. An empirical approach was used to determine the shape parameter, k, and the scale parameter, c, of Weibull distribution function at different heights from 2014 to 2016 during two years period. Wind characteristics in Chabahar were extensively analyzed along with assessing the effects of parameters such as air humidity and temperature, surface roughness, turbulence, and wind velocity durations. The amount of wind power that can be produced by installation of eight wind turbines with different powers ranging from 2.5 kW to 8 MW at Chabahar were investigated. Additionally, the annual capacity factor for each turbine was determined. A wind-hydrogen system was considered in the analysis for evaluating the hydrogen production ability from wind energy in the station at Chabahar. The highest amount of hydrogen production was related to Vestas V164 with the yearly value of 194.36 ton-H2. [ABSTRACT FROM AUTHOR]

Many advantages of renewable energies, especially wind energy, such as abundance, permanence, and lack of pollution has encouraged many industrialized and developing countries to focus more on these clean and economic sources of energy. Identifying a good location that is suitable for the construction of a wind farm is one of the important initial steps in harnessing wind energy which is assessed this study. The purpose of this study is to prioritize and rank 13 cities of Fars province in Iran, in terms of their suitability for the construction of a wind farm. Six important criteria were used to prioritize and rank the cities. Wind power density is the most important criterion among these criteria which is calculated by obtaining the 3-h wind speed data between 2004 and 2013. DEA (Data Envelopment Analysis) method is used for prioritizing and ranking cities, and then AHP (Analytical Hierarchy Process), and FTOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) methods are used to assess the validity of results. It is concluded that Izadkhast city is the suggested location for the construction of wind farm. The utilizing a wind-hydrogen energy conversion system will result in a substantial amount of hydrogen production (averagely 21.9 ton/year) when a 900 kW wind turbine is installed in this location. [ABSTRACT FROM AUTHOR]

In recent years more attention has been paid to renewable and clean sources of energy like wind. Due to the uncertainties related to wind turbines, issues of energy storage are significant. One of the most appropriate methods of energy storage is the production of hydrogen. The main aim of this paper is to investigate the capability of wind energy for producing hydrogen in the south eastern province of Sistan & Baluchestan in Iran. This paper analyzes four different wind turbines with a capacity of 300–900 kW in five locations, in Dalgan, Lutak, Mil-Nader, Nosratabad and Zahedan. In this study, two approaches were used; the actual average wind turbine power and the Weibull. It was found that EWT Directwind 500/54 provides the best capacity factor among all examined turbines with the highest value of 50.77% for the station at Lutak. Additionally, the highest energy production was from the AWE 52-900 wind turbine with an annual production of 2462.5 MWh. A wind-hydro system consisting of a power controller, a high efficiency rectifier, and an alkaline electrolyzer was considered. The proposed conversion system resulted in a linear relationship between generated wind turbine energy and the amount of hydrogen produced. Therefore, the highest amount of yearly hydrogen production (39.82 ton-H 2 ) is related to the largest examined wind turbine, installed in the station at Lutak. [ABSTRACT FROM AUTHOR]

Abstract Wind power potential by itself is not a good indicator of the suitability of a region for wind power generation for different purposes. Economic attractiveness is a better indicator in this regard as it stimulates the involvement of private businesses in this sector. Naturally, the shorter is the payback period or the time required to reach profitability, the more attractive will be the project. Considering the high wind energy potential of some regions of Iran, this study evaluates the wind energy available for generating electricity as well as hydrogen by industrial and agricultural sectors in four cities of Ardebil province, namely Ardebil, Khalkhal, Namin, and Meshkinshahr, and then conducts an econometric analysis accordingly. Wind power potentials are evaluated using the energy pattern factor and Weibull distribution function based on 5-year meteorological data of the studied regions. Economic evaluations are performed based on the present worth of incomes and costs, which are estimated for two models of wind turbines with 3.5 and 100 KW rated power. Results indicate that the cities of Namin and Ardebil with wind power densities of respectively 261.68 and 258.99 W/m2 have the best condition. The economic analysis conducted for turbines shows that for Ardebil, installation of the 3.5 KW and 100 KW turbines will have a payback period of 13 and 5 years, respectively. For Khalkhal, Namin, and Meshkinshahr, the only feasible option is installation of the 100 KW turbine, which would result in a payback period of respectively 10.2, 6.1 and 8.7 years. Then it is investigated how much hydrogen can be gained if these private sectors invest in producing hydrogen using nominated wind turbines. Highlights • Hydrogen production by renewable wind energy was investigated. • Feasibility of hydrogen energy for agricultural and industrial sectors was performed. • Economic evaluation was done for four cities of Ardebil province in Iran. • It was found that these sectors can produce 25% of their own need to electricity. • Yearly hydrogen of 5253 kg would be produced in Ardebil City. [ABSTRACT FROM AUTHOR]