نشریه سد و نیروگاه برق آبی ایران
پیاپی 33 (تابستان 1401)

Using renewable energy sources is one of the human solutions to reduce environmental pollution and is a suitable alternative to fossil fuels. Therefore, different countries have established laws and regulations in line with the construction of renewable power plants and have also considered incentives to encourage investors. In Iran, the rules for the construction of renewable power plants are defined by different relevant organs according to the type of power plant. One of the most essential issues facing power plant builders is the economic evaluation of power plant construction and the calculation of the amount of initial capital, taking into account the granted facilities and predicting the profitability of the project. Therefore, there is a need for software for the economic evaluation of the construction of power plants, taking into account the laws governing the construction of power plants in Iran. In this article, software for the economic evaluation of geothermal power plants under the title "GEO-ECO" has been designed and presented in the Excel environment. Using GEO-ECO software, the amount of initial capital, granted facilities, tax, and profitability rate of the geothermal power plant construction project in Iran can be evaluated.

Construction of morning glory spillway in earthen dams is preferred separately from the dam body, which reduces the risk of scouring and saturation of the downstream shell of the dam. Since at the input of this type of spillway, the flow is formed in a vortex. Vortex currents occur due to changes in flow direction, viscosity and surface tension. The presence of this type of flow has a negative impact on the performance of structures such as the spillway. A method that can be effective to control the vortex is to use vortex breaker blades, which will have a great effect on increasing the flow rate and flow rate. In this research, the modeling of the spillway along with the vortex breaker blades with the help of FLOW-3D software on the hydraulics of the spillway is investigated. The results showed that with increasing the number of blades on the overflow crown, the discharge coefficient has increased and this in turn increases the spillway efficiency. It was also observed that among the 5 angles tested, the vortex breaker with a 40 degree angle has better performance than other angles. Therefore, the sharper the vortex blades, the better the results.

The aim of this study was to Prioritizing the effects of environmental sustainable development indicators on the use of corridors in the construction of oil pipelines with a multi-criteria decision approach in Poldakhtar Shazand region by using the ANP-DEMATEL hybrid approach  Based on the studies, the main criteria of the research include physicochemical environment, biological environment and socio-economic environment, each of which includes a number of sub-criteria and each sub-criterion includes a number of indicators it was proved that among the criteria, "physicochemical environment" with an impact of 3.828 and among the sub-criteria, "water pollution" with an impact of 10.05 has the most impact. The criterion of "socio-economic environment" with a final weight of 0.358 in the first priority among the criteria, the sub-criterion of "water pollution" with a final weight of 0.1113 in the first priority among the sub-criteria and the index "garbage and human waste" with a final weight of 0.0305 in the first priority among the indicators contract.Finally, using the TOPSIS technique, it was found that the "joint corridor option" has less environmental effects than the "independent corridor" option.

Increasing energy demand has made improving the management of resource utilization and energy inevitable. The purpose of this article is to compare the power generation of two power plants of Karun 4 and Rudbar dams in the period of 1397-98 in two cases with flood forecasting and warning without applying and paying attention to flood warning and finally estimating economic benefits and revenues. It is a prediction of the use of this system. Flood forecasting and warning systems are among the non-structural methods of flood management that in combination with structural methods can increase the efficiency of flood management. This system timely warnings through planning and management of dam reservoir operation, enables the creation of broad benefits in reducing flood damage lands. In addition to these benefits, another part of the positive effects of these systems is the increase in electricity production in hydropower plants. The results of this study show that the amount of electricity generation in the power plants of dams in the state of flood warning activity by increasing the release from the turbines of power plants before the flood and preventing overflow, 3.9 and 4.8% more than Flood alert mode is desired during the annual interval.

Every country with any level of development seeks further development. In this article, by presenting an innovative method derived from the concept of work and its relationship with power and the direction of its application, a new approach to development indicators and especially the Inclusive Development Index (IDI) is proposed. This method is a development on IDI that takes economic, social and environmental aspects into account.For this work, countries were grouped based on their IDI pattern and analyzed to quantify the compatibility of national resources used with planned development strategies. The results obtained for each country provide an insight into whether the use of additional resources can further improve the development index or the need to revise or change the planned strategies before taking any further action.Subsequently, based on the water and green growth model that is proposed for institutional evaluation and analysis of policy instruments, the projects of Iran's water sector were evaluated. This analysis was done based on questionnaires answered by university and industry experts. The final result reveals the need to review the strategies and programs of the country's water sector.

The main objective of this research is to compare the performance of artificial neural network (ANN) and deep neural network (DNN) models in rainfall-runoff modeling of Kashafrood and to predict the effects of climate change on meteorological parameters and river discharge.