Feasibility study of green hydrogen generation from wind power plants under Indian climatic conditions

Hydrogen farm concept: A Perspective for Turkey

There is significant volumes of construction and commissioning of solar and wind power plants since 2014 in the United power system of Russia, therefore new engineering tasks are being set for Russian power engineers. Operating modesof solar and wind power plants directly depend on external uncontrollable factors - solar and wind activity. An additional feature of the planning of the wind and solar power plants operation modes is their instantaneous termination of power output in the event of the disappearance of the wind or the sun, respectively. Therefore, the termination of the power output is a “failure”, which creates an imbalance of active power in the system. To cover it, it is necessary to place active power reserves at the thermal or hydro power plants in advance, and the value of this reserve should be equal to the capacity of the largest wind and/or solar power plant. Systematic and consolidated information on the composition, quantity and installed capacity of wind and solar power plants in the United power system of Russia is not published in the public domain. Therefore, the purpose of this study is to establish the quantity and installed capacity of wind and solar power plants, as well as to identify the most powerful wind and solar power plants in Russia.

Thermodynamic optimization of power plants based on supercritical (SupC) and ultrasupercritical (USC) steam parameters is reported in this article. The objective is to compute the maximum attainable power plant efficiency in Indian climatic conditions using high ash (HA) indigenous coal. A unit size of 800 MWe presently under development in India is considered for energy and exergy analysis of power plants. Commercially established steam turbine parameters are used for the optimization of SupC power plant, whereas advanced steam turbine parameters currently under research and development are used for the optimization of USC power plant. The plant energy efficiency of the optimized SupC and USC power plant based on air-coal combustion (ACC) show considerable increases of 2.8 and 5.2% points, respectively compared with the current SupC ACC power plant (reference plant) being commissioned in India. The increases in plant exergy efficiency for the same power plants are 2.6 and 4.8% points and the corresponding CO2 reductions are about 6 and 11%, respectively. The maximum possible plant energy efficiency in Indian climatic conditions using HA Indian coal is about 42.7% (USC power plant). The effect of low ash coal on plant energy and exergy efficiencies compared with HA coal is also presented. Further, the effect of oxy-coal combustion (OCC) on the plant energy and exergy efficiencies compared with the ACC is studied for the double reheat SupC and USC power plants to account for the impact of CO2 capture. A significant reduction of 8.8 and 6.6% points in plant energy efficiency is observed for SupC and USC OCC power plants, respectively compared with the reference SupC ACC power plant.

The objective of the study is to identify the ‘best’ possible power plant configuration based on 3-E (namely energy, exergy, and environmental) analysis of coal-based thermal power plants involving conventional (subcritical (SubC)) and advanced steam parameters (supercritical (SupC) and ultrasupercritical (USC)) in Indian climatic conditions using high ash (HA) coal. The analysis is made for unit configurations of three power plants, specifically, an operating SubC steam power plant, a SupC steam power plant, and the AD700 (advanced 700°C) power plant involving USC steam conditions. In particular, the effect of HA Indian coal and low ash (LA) reference coal on the performance of these power plants is studied. The environmental impact of the power plants is estimated in terms of specific emissions of CO2, SOx, NOx, and particulates. From the study, it is concluded that the maximum possible plant energy efficiency under the Indian climatic conditions using HA Indian coal is about 42.3% with USC steam conditions. The results disclose that the major energy loss is associated with the heat rejection in the cooling water, whereas the maximum exergy destruction takes place in the combustor. Further, the sliding pressure control technique of load following results in higher plant energy and exergy efficiencies compared to throttle control in part-load operation. Copyright © 2009 John Wiley & Sons, Ltd.

Purpose. The aim of the article is the theoretical and practical substantiation of the prospects for interaction between the state and society in order to overcome the energy crisis associated with the consequences of the russian-Ukrainian war through the development of wind and solar power generation and, as a consequence, cryptocurrency heat generation. Methodology of research. The methodological basis of this economic scientific research is the dialectical method of scientific cognition. In the process of economic scientific research, general scientific and special scientific methods were applied, among which the main ones are: abstract and logical methods – for formulating general conclusions of economic scientific research; systemic approach – in determining the causes and factors of the influence of the interaction of the state and society in the development of wind and solar power generation and, as a consequence, the development of cryptocurrency heat generation, on the energy security of households. Findings. The role of green energy was studied, in particular, the trends in the installation of small solar and wind power plants by households and firms to ensure the economic, demographic and energy security of the country in the conditions of a full-scale russian-Ukrainian war. Based on the analysis, it was determined that state support for households' investment in the installation of their own solar and wind power plants through a reduction in the tax burden on the import of their components, as well as financial incentives for their purchase, is a key factor in the development of green energy. It is estimated that investments by economic entities in the development of solar and wind power plants in 2024 and subsequent years will allow citizens not only to reduce electricity costs, avoid blackouts and ensure stable operation of critical electrical appliances, but will also contribute to energy independence in the long term. In addition, such investments can become a source of profit throughout the entire period of operation of energy equipment. The possibilities of using excess electricity for cryptocurrency mining are analysed, which creates significant additional economic benefits for households. It is summarized that the combination of cryptocurrency mining and electricity generation by home solar and wind power plants creates a significant synergistic effect that has a mutual economic and security impact on households. Based on the research conducted, it is substantiated that both during the war and in the post-war period, it is economically feasible for households to invest simultaneously in two areas – electricity production from renewable sources and cryptocurrency mining. This will maximize the benefits from the use of generated electricity, increase financial stability, and promote energy autonomy. Originality. The substantiation of the feasibility of introducing state investment support for households by economic entities in the purchase of solar power plants and their payback with the possibility of ensuring a synergistic positive economic effect at the micro- and macro-economic level has gained further development. Practical value. The obtained results of the study can serve as the basis for households and firms to make decisions on the installation of wind and solar power plants for electricity generation in order to meet personal needs and, as a result, additional heat generation, and the mining of crypto coins using cryptocurrency farms is advisable for the state and its citizens due to the achievement of a significant positive synergistic economic effect. Key words: investments, wind power plants, solar power plants, green energy, cryptocurrency, mining.

Life cycle cost analysis of HPVT air collector under different Indian climatic conditions

Integrating wind power and solar power plants into a power system has significantly grown over the past decade and is expected to grow to unprecedented levels in the coming years. In Vietnam, much large-scale wind power and solar power plants have been built and connected to the power system in recent years. To investigate and evaluate the impact of these power plants on system power operation, the 110kV power transmission network of Binh Dinh province in Vietnam is used in this paper. In the system, the Phuong Mai 3 wind power plant with a capacity of 21MW, the Fujiwara solar power plant with a peak capacity of 50MWp, and the Cat Hiep solar power plant with a peak capacity of 49.5MWp are modeled by using the PSS/E software to simulate and analyze their impacts on power system stability of the 110kV transmission network in Binh Dinh province, Vietnam. Besides, the control strategies of these power plants are also established to investigate their impacts on the network. In addition, this paper proposes three typical scenarios for the wind power and solar power plants in the system. For each scenario, the grid's operating parameters such as voltage variations and frequency variations are acquired for analyzing and evaluating their impacts on the frequency and voltage variations of the network. The simulation results show that the 110kV power transmission network remains in a stable operation mode after the fault scenarios for the wind and solar power plants. Furthermore, these simulation results provide some guidance for the actual operation

Diseases in sugar beet are one of the factors on which its growth and development are dependent. It is a limiting constraint to achieve high yield in sugar beet. In India, rate of occurrence of diseases varies from 10% to 15% and this results in influencing the low sugar beet yield. Fifteen sugar beet diseases of economic value have been known in Indian climatic conditions. The juicy content of the leaves acts as a favorable host for several foliar infections causing a strong impact on root yield. Certain foliar infection in sugar beet crop has nonsignificant effect on sucrose content. Management strategies have been adopted in controlling the various foliar diseases worldwide and the application of bioagents has also been recommended to avoid the lucid use of nonsystemic and systemic fungicides. The foliar diseases known in this crop under Indian conditions have been briefly described in this chapter highlighting the approaches adopted to manage them.KeywordsSugar beetDiseaseSucroseFungicideIndia

ABSTRACTAll countries attach great importance to renewable energy investments with concern that future fossil-fueled energy resources could be exhausted. Thus, a very large renewable energy production potential may be predicted in not a very distant future. This study is about optimal energy production from wind and hydroelectric power plants at a small scale settlement center. A water resources system with multiple reservoirs in which wind power plants are located around the basin is described in this study. The system has three scenarios, in which wind and hydroelectric power plants are integrated, separated and no wind turbines. In the integrated scenario, by the energy generated in the wind power plants, the released flows from the reservoirs are sent to the reservoirs as a use again. In models of every scenario, optimal operational models for long-term planning are established on the system. The technique of dynamic programming with successive approximations is used in these models. The models are applied to a water resources system with multiple reservoirs presented successively on the main line of the Ceyhan River in the Ceyhan Basin. The results obtained here are evaluated in terms of three scenarios developed for energy production. As a result, it has been seen that the systems of the integrated and separated scenario are similar to energy productions and system without wind turbines produces more little energy production to other scenarios.

Energy and exergy analyses of a salinity-gradient solar pond (SGSP) (100 × 100 m2) are carried out in the Indian climatic conditions. It has been found that the highest amount of useful low-grade thermal energy, i.e., 24,260 and 28,119 MJ, can be extracted at 80 and 85°C temperature from heat storage zone (HSZ) of the solar ponds at New Delhi and Bhavnagar in the month of May, respectively. Highest and lowest overall energy and exergy efficiency of the SGSPs have been estimated as 10.60 and 1.64%, and 2.7 and 0.4%, respectively. Exergy destructions are estimated to be 6–11.4 MJ/m2 in the Upper Convective Zones (UCZs), 2.5–4.8 MJ/m2in the Non-Convective Zones (NCZs) and 3.1–6.2 MJ/m2in the HSZs. The annual overall energy and exergy efficiency of the solar ponds are about 6.46 and 0.9% in New Delhi and 7.09 and 1.07% in Bhavnagar, respectively.

An intense review on the performance of PCM-based lithium-ion battery cooling with aging effect in Indian climate conditions

Monthly performance of passive and active solar stills for different Indian climatic conditions

This item is part of: Boarin, P., Haarhoff, E., Manfredini, M., Mohammadzadeh, M., Premier, A., (2021). Rethinking Sustainable Pacific Rim Territories. Proceedings of the 2020 APRU Sustainable Cities and Landscapes Hub PhD Symposium, Future Cities Research Hub, School of Architecture and Planning of the University of Auckland. ISBN: 978-0-473-53616-9ABSTRACTThis work aimed to explore a novel method for augmenting the fresh water production rate of solar stills (SSs) through utilizing nanoparticles of reduced graphene oxide (rGO) and copper oxide (CuO) mixed black paint coating on absorber to increase the solar absorption and evaporation rate. The three types of SS with absorber plate only coated with black paint (CSS), absorber coated with rGO doped in black paint and absorber coated with CuO doped in black paint (SS-CuO) were fabricated, and investigated under Indian climatic conditions. The obtained results showed that the daily water productivity was enhanced by 11.8 % and 6.3 % for SS-rGO and SS-CuO, respectively in comparison to that of CSS. Moreover, the efficiency of the SS reached about 39.9 % for SS-rGO; while, it reached about 38.1 % and 35.7 % for the SS-CuO and CSS. Moreover, it is perceived that the proposed SS with rGO coated absorber has reduced 13.19 tons of CO2 emissions for 0.01 m water depth during its life cycle. In addition, quality of water samples achieved from experimental investigation is suitable for drinking purposes and also meets the requirements of the Indian Council of Medical Research.

Aims: The aim of the study was to evaluate and compare physical properties such as tensile strength and tear strength of three commonly used silicone maxillofacial materials in Indian climatic condition. Settings and Design: An in vitro study was conducted to compare the tensile and tear strength using a universal testing machine with 100 N load at a speed of 20 mm/min. Specimens were prepared from three commercially available silicones, i.e., medical grade silicone (control group), prosthetic grade silicone (test Group 1), and a locally available medical grade silicone (test Group 2). One-way analysis of variance was carried out to test any significant difference between the mean values of tensile and tear strength between the tested materials. Post hoc test of Tukey was used to find which of the two groups' means shows a significant difference. Results: Prosthetic grade silicone showed the highest tensile strength with a P

A novel study for determining early life degradation of multi-crystalline-silicon photovoltaic modules observed in western Himalayan Indian climatic conditions