scholarly journals A Review on the Development of Gravitational Water Vortex Power Plant as Alternative Renewable Energy Resources

Author(s):  
M. M. Rahman ◽  
J. H. Tan ◽  
M. T. Fadzlita ◽  
A. R. Wan Khairul Muzammil
Author(s):  
Michał Koszowski

On 22 December 2011, the Ministry of Economy presented a draft law on Renewable Energy Resources (RES), which fits into the discussion on the recognition of wind power plant as an investment of a public purpose (IPP). The author is of an opinion on that a wind power plant cannot be considered as an IPP for legal, rather than technical reasons. The investor’s objective is to obtain an outline planning decision, not a decision on the location of an IPP, which might otherwise prolong the investment process.


Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1277 ◽  
Author(s):  
Mehdi A. Ehyaei ◽  
Abolfazl Ahmadi ◽  
Marc A. Rosen ◽  
Afshin Davarpanah

Due to the harmful effects and depletion of non-renewable energy resources, the major concerns are focused on using renewable energy resources. Among them, the geothermal energy has a high potential in volcano regions such as the Middle East. The optimization of an organic Rankine cycle with a geothermal heat source is investigated based on a genetic algorithm having two stages. In the first stage, the optimal variables are the depth of the well and the extraction flow rate of the geothermal fluid mass. The optimal value of the depth of the well, extraction mass flow rate, and the geothermal fluid temperature is found to be 2100 m, 15 kg/s, and 150 °C. In the second stage, the efficiency and output power of the power plant are optimized. To achieve maximum output power as well as cycle efficiency, the optimization variable is the maximum organic fluid pressure in the high-temperature heat exchanger. The optimum values of energy efficiency and cycle power production are equal to 0.433 MW and 14.1%, respectively.


2013 ◽  
Vol 734-737 ◽  
pp. 1747-1751
Author(s):  
Sureeporn Meehom ◽  
Wipanan Iaprasert ◽  
Thanatchai Kulworawanichpong

Electricity is a pre-requisite for technological progress and economy growth. Thailand has been facing an electric energy crisis in inadequate electricity generation capacity compared with the demand. It is essential to replace the conventional energy (e.g. fossil fuels) with renewable energy resources, particularly biomass that can play a major role to meet the electricity demand. A modified deming PDCA management has been proposed for power generation. The objective of this study is to evaluate the future electricity consumption as well as to explore the current state of renewable energy potential in Nakhonratchasima Province, Thailand. The results show an electricity energy potential of from agricultural residues, livestock manure and solar energy resources. It is indicated that each these resources can supply the electricity demand excesses. The selection of renewable power generation is mainly driven by the installation cost and the availability of renewable energy resources. The power plant from livestock manures resources is found to be the most promising because its power plant installation requires lower investment in this study.


2019 ◽  
Vol 10 (12) ◽  
pp. 1165-1171
Author(s):  
Karl Gatterer ◽  
◽  
Salah Arafa ◽  

Reliable and affordable energy is the key for the socio-economic development in rural and desert communities worldwide. While energy can be used for consumption purposes such as Lighting, Access to Information, Comfort and Entertainment, productive use of renewable energy is the key enabler for SMEs and Economy to grow. The paper examines the complex interactions among Energy, Materials, Water, Food, Building, Employment and Environment. It also discusses the implementation of renewable energy technologies to overcome some of barriers faced by rural villages and desert communities. It shows some of the special applications and approaches used over the past few decades in energy conversion, consumption and conservation to achieve poverty reduction, social justice and sustainable development. Field experiences in Basaisa projects, Egypt showed that open free dialogues with all stakeholders, site-specific education and training, appropriate local financing systems and access to knowledge are key-elements and essential factors for achieving green economy and sustainable community development. The coming decade will see a continued expansion of knowledge about renewable energy resources and its useful applications as systems friendly to the environment and as tools for economic activities, sustainable living and growth in rural and desert communities.


2012 ◽  
Vol 2 (11) ◽  
pp. 121-124
Author(s):  
Savitha C Savitha C ◽  
◽  
Dr. S. Mahendrakumar Dr. S. Mahendrakumar

Author(s):  
S. G. Obukhov ◽  
I. A. Plotnikov ◽  
V. G. Masolov

The paper presents the results of the comparative analysis of operation modes of an autonomous hybrid power complex with/without the energy store. We offere the technique which defines the power characteristics of the main components of a hybrid power complex: the consumers of the electric power, wind power and photo-electric installations (the last ones have been constructed). The paper establishes that, in order to compensate the seasonal fluctuations of power in autonomous power systems with renewable energy resources, the accumulative devices are required, with a capacity of tens of MWh including devices that are capable to provide energy storage with duration about half a year. This allows abandoning the storage devices for smoothing the seasonal fluctuations in the energy balance.The analysis of operation modes of energy stores has shown that for a stock and delivery of energy on time intervals, lasting several hours, the accumulative devices with rather high values of charging and digit power aren't required. It allows using the lead-acid rechargeable batteries of the deep category for smoothing the daily peaks of surplus and a capacity shortage. Moreover, the analysis of operation modes of energy stores as a part of the hybrid complexes has demonstrated that in charging/digit currents of the energy store the low-frequency and high-frequency pulsations of big amplitude caused by changes of size of output power of the renewable power installations and loading are inevitable. If low-frequency pulsations (the period of tens of minutes) can partially be damped due to the restriction of size of the maximum charging current of rechargeable batteries, then it is essentially impossible to eliminate high-frequency pulsations (the period of tens of seconds) in the power systems with the only store of energy. The paper finds out that the combined energy store having characteristics of the accumulator in the modes of receiving and delivery of power on daily time intervals, and at the same time having properties of the supercondenser in the modes of reception and return of impulses of power on second intervals of time is best suited to requirements of the autonomous power complexes with renewable energy resources.


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