Journal of Solar Energy Research
Volume:5 Issue: 3, Summer 2020

The adverse environmental effects of traditional ways for producing electricity necessitate accurate and extensive planning for renewable and sustainable energy generation systems. A review of the research in this field shows that no work has been conducted so far to study the condition of solar energies in Asia to find suitable places for installing large-scale solar power plants. Therefore, given lack the general modelling in this case, the purpose of analyzing solar data in Asia in the present work is to support the utilization of large-scale renewable power plants. Along with analyzing the current level of using renewable energies in Asian countries, the present work also identifies suitable places for using solar energy using GIS software and meteorological data taken from NASA website for 2892 stations in 49 Asian countries. Boolean Logic was used for managing and selection of data. Results indicated that, except for Russia, a small area in South of Mongolia, Eastern half and North-western of China, North of Vietnam, Northern half of Taiwan, North Korea, South Korea, Kazakhstan, Northern half of Kyrgyzstan, Northern half of Uzbekistan, North-west of Turkmenistan, North-west of Iran, Azerbaijan, Armenia, Georgia, and Northern one-third of Turkey, other areas in the Asian continent are totally suitable for using solar energy.

This paper examines the numerical analysis of the transient analysis of solar desalination and the effect of climatic conditions on its performance. The solar water desalination plant is intended to convert the salt water of the seas and lakes into fresh water. TRNSYS software is used for simulation. In order to study the effect of weather conditions on the efficiency of solar water desalination, the cities of Bandar Abbas, Bushehr, Isfahan, Hamedan, Kerman, Mashhad, Tabriz, Zahedan and Tehran have been considered. The effect of solar collector area and auxiliary heater power on solar water desalination efficiency has been investigated. The results show that with increasing collector area and auxiliary heater power, the outlet water temperature of the collector increases. Carbon dioxide production has decreased by about 4.5-8.6% compared to diesel desalination. Using the analytic hierarchy process decision-making algorithm, the best location for installing the desalination plant has been selected based on the two criteria of solar water desalination efficiency and distance from the sea. Bushehr city is in the first place with 75% efficiency and Tabriz city is in the second place with 61% efficiency.

Equipping hospitals with emergency power supply is crucial. This is especially critical for important wards of the hospital, such as the NICU. Due to the importance of this issue, the present study, for the first time, studies the power supply of vital devices of the neonatal ward in one of the hospitals in Iran. Techno-econo-enviro studies have been performed using HOMER software on 20-year average data. The case study of this article is the Social Security Hospital in Farrokhshahr, Iran, where the system under study uses tree-shaped wind turbines, solar cells, diesel generators and batteries. The use of real data for the electrical consumption of the devices, use of wind and sun data in the form of 20-year averages, and use of up-to-date costs of equipment and consumed fuel, as well as the use of a new generation of the wind turbine, are the advantages of the present study. The results showed that the use of solar energy is superior to the use of wind energy, both economically and environmentally. The cheapest simulated system among 17640 possible scenarios, with the price of each kWh equal to 0.636$, was able to use 18% of the solar energy. In contrast, the cheapest wind turbine-based system was able to use 10% of the wind energy, with the price of every kWh wind electricity equal to 0.917$. The diesel generators are used in all optimal scenarios, which indicates that either the price of solar cells and wind electricity are high compared to the diesel generator, or the intensity of sunlight or wind speed are not high enough. Moreover, compared to the conventional system only consisting of diesel generator, the optimal scenarios of using solar cells and wind turbine, benefit from a reduction in produced pollutants equal to 4.8 and 4 tones/yr, respectively.

In recent decades, global energy demand and environmental pollution have been steadily rising. The power sector is one of the major sources of global environmental pollution. Hence, it is necessary to pay more attention to renewable energy resources. In order to identify the best scenario for construction of a renewable power plant, it is necessary to examine all scenarios from all environmental aspects. Life cycle assessment methodology can be a useful tool for this purpose. In this research, life cycle of polycrystalline solar panel production in Iran is assessed. Primary energy consumption, global warming potential, acidification potential and eutrophication potential for panel and also cell manufacturing is assessed and the share of each panel component in all impact categories is presented. The primary energy demand is calculated as 15.4 MJ/WP and GWP, AP and EP are calculated as 1.4356 kg CO2-equiv. /WP, 0.006 kg SO2-equiv. /WP and 0.0013 kg PO43—equiv. /WP respectively. Transportation of panel components to the panel manufacturer is modeled in detail, results show that its contribution to life cycle primary energy consumption and environmental pollution is negligible. The results of this study can be used to identify critical points of the manufacturing life cycle and also to make decisions for the development of photovoltaics in Iran.

In this research, the effect of using the exhausted smoke of a cogeneration power plant as the working fluid of a solar chimney to increase power generation is studied by numerical methods. First, the cogeneration power plant is modeled using ASPEN HYSYS; then, the properties of the exhausted smoke including temperature, mass flow rate and etc. are entered to the model of solar chimney power plant, developed in ANSYS FLUENT. Using this hybrid model, the effect of solar radiation on power generation is compared for both air and smoke as working fluids. Furthermore, the effect of inlet temperature on power generation is also studied. The results showed that the power generation increases on average 4 times using smoke instead of air. It is also found that the optimum chimney height is 500 m using air and 600 m using the exhausted smoke of cogeneration power plant.

Kerman province has an important advantage of solar energy due to the sun's rays in more than 300 days of the year, which can improve the province's position in the field of clean energy supply as well as attracting foreign investors. In this study, in order to identify, extract, weigh the criteria to measure the technical, spatial, economic, socio-environmental advantages and also to rank the cities of Kerman province using the Delphi, AHP and TOPSIS method. In the next step, simulation of the production capacity of domestic solar power plants has been done using PVSyst software. The results show that the cities of Baft and Rabor have the greatest advantage in generating electricity from the solar system.