scholarly journals Study of potential application of alternative power cycles in Colombia

2021 ◽  
Vol 10 (6) ◽  
pp. 382-392
Author(s):  
Mawency Vergel Ortega ◽  
Jhan Piero Rojas Suarez ◽  
Sofia Orjuela Abril

The energy cost and environmental problems such as greenhouse gas emissions have made efficient energy and renewable energy resources use a necessity for the care of the environment and for the economic and productive growth of the different sectors of a country’s economy. This has been achieved through policies that encourage the application of technologies that increase the processes efficiency and take advantage of the means available for generating power in different sectors of the economy where alternative power cycles like Goswami, Kalina, and ORC have great potential in both energy recovery and the use of renewable energy resources. In Colombia, the potential for using these technologies is wide in the industry since sectors such as Steel, cement, textile, among others, are made up. Where these cycles represent an opportunity for efficient energy use and, on the other hand, in the use of renewable energies such as geothermal and solar, these cycles have again proven to be viable, and due to the geographical location and characteristics of its soil, Colombia has a wide potential. All this shows the necessity for national policies that encourage efficient use through subsidies, investment, training, etc. For the application of alternative power cycles because their costs are so high and the support of financing instruments and policies at the national level is a latent need in Colombia.

2020 ◽  
pp. 165-171
Author(s):  
Iryna Hryhoruk

Exhaustion of traditional energy resources, their uneven geographical location, and catastrophic changes in the environment necessitate the transition to renewable energy resources. Moreover, Ukraine's economy is critically dependent on energy exports, and in some cases, the dependence is not only economic but also political, which in itself poses a threat to national security. One of the ways to solve this problem is the large-scale introduction and use of renewable energy resources, bioenergy in particular. The article summarizes and offers methods for assessing the energy potential of agriculture. In our country, a significant amount of biomass is produced every year, which remains unused. A significant part is disposed of due to incineration, which significantly harms the environment and does not allow earning additional funds. It is investigated that the bioenergy potential of agriculture depends on the geographical distribution and varies in each region of Ukraine. Studies have shown that as of 2019 the smallest share in the total amount of conventional fuel that can be obtained from agricultural waste and products suitable for energy production accounts for Zakarpattya region - 172.5 thousand tons. (0.5% of the total) and Chernivtsi region - 291.3 thousand tons. (0.9%). Poltava region has the greatest potential - 2652.2 thousand tons. (7.8%) and Vinnytsia - 2623.7 thousand tons. (7.7%). It should be noted that the use of the energy potential of biomass in Ukraine can be called unsatisfactory. The share of biomass in the provision of primary energy consumption is very small. For bioenergy to occupy its niche in the general structure of the agro-industrial complex, it is necessary to develop mechanisms for its stimulation. In addition, an effective strategy for the development of the bioenergy sector of agriculture is needed. The article considers the general energy potential of agriculture, its indicative structure. The analysis is also made in terms of areas. In addition, an economic assessment of the possible use of existing potential is identified.


2018 ◽  
Vol 48 ◽  
pp. 03006 ◽  
Author(s):  
László Gyarmati

At the University of Szeged, as the greenest University of Hungary, the sustainability project is built on two pillars. One of them is based on events and communication campaigns held regularly for the University citizens to prompt environmental-conscious behaviour, whereas the other is built on technological developments and on the extensive use of renewable energy resources. Thus the development of built environment and social responsibility both support the adequacy to sustainability requirements. The spreading of the effective solutions to making more and more buildings of the University energy efficient, numerous investments using renewable energy are also responsible for the decrease of the natural energy use of the institution contrary to the fact that the number of the buildings of the University of Szeged is continually increasing. It can be stated that the University of Szeged is committed to using renewable energy which is taken into consideration of each investment planning. The following examples confirm it: using geothermal cascade system for heating and cooling of five university bulidings, solar panels on 24 builidings and a unique technology of using the heat of wastewater to cool and heat one of the main bulidings of the university, namely the Study and Information Centre.


2013 ◽  
pp. 143-146
Author(s):  
Orsolya Nagy

The use of renewable energies has a long past, even though its share of the total energy use is rather low in European terms. However, the tendencies are definitely favourable which is further strengthened by the dedication of the European Union to sustainable development and combat against climate change. The European Union is on the right track in achieving its goal which is to be able to cover 20% its energy need from renewable energy resources by 2020. The increased use of wind, solar, water, tidal, geothermal and biomass energy will reduce the energy import dependence of the European Union and it will stimulate innovation.


Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5752
Author(s):  
Zofia Gródek-Szostak ◽  
Marcin Suder ◽  
Rafał Kusa ◽  
Anna Szeląg-Sikora ◽  
Joanna Duda ◽  
...  

Stable and sustainable economic development—including that of renewable energy resources (RES)—requires institutional support of an environment that would enable market operations, and support them in case they are ineffective. Innovation brokers, including structured technology transfer networks, play a key role in promoting, disseminating, and liaising between the parties in the RES sector. The aim of the paper is to present the structure of events used to promote RES in Europe by the Enterprise Europe Network in the years 2017–2018; to verify whether the type of promotion instrument used is significantly related to the location of the events organized; to research whether the selection of the supporting partner is determined by the organized event’s geographical location. The analysis is carried out by means of an empirical study of the network of innovation brokers, i.e., the Enterprise Europe Network. Additionally, the available data are analyzed in terms of the type of the partner supporting individual events. It has been shown that there is a significant variation in the structure of the types of events for individual regions of Europe. This could mean that the organizers’ decisions as to the type of events organized in particular regions of Europe are deliberate and in some way adjusted to the region in which they take place.


2015 ◽  
pp. 143-146
Author(s):  
András Tamás

Today it's an important role of the renewable energy resources, improving energy efficiency, thereby contributing to sustainable, ecofriendly use of local energy resources. Globally intensify the requirements and considerations related to environmental conservation. In this light, the main objective of the Hungarian energy concept is to maintain long-term security of supply, the economy and the environment occurring contradictions. So there is a need for systems that, in compliance with EU environmental directives, acceptable cost level will ensure the desired and expected security of supply. In the study, three companies and other technical parameters of these are examined. For each undertaking, different results were observed. For two undertakings, we are talking about realized investments, in one case a prognosis was examined. All three companies contributed to the requirement of renewable energy sources reaching 13% in Hungary by 2020.


Subject Turkey's plan for renewable energy. Significance Faced with growing dependence on imported gas and coal, low utilisation of domestic renewable energy resources and EU entry criteria, Turkey has launched its National Renewable Energy Action Plan (NREAP). It aims to bring Turkey into line with EU targets for use of renewable energy by 2023. Turkey has been slow to encourage the development of renewables; both policy and legislation often seem designed to encourage giant coal, gas and nuclear plants. Impacts Elections and political inaction will slow upgrading and improving management of the national grid to suit the development of renewables. Bureaucratic and technical hurdles will slow developing licensed 'on-grid' solar plant, raising interest in 'off-grid' and unlicensed plant. Only in geo-thermal power does Turkey appear likely to exceed its planned generation target.


2018 ◽  
Vol 17 (1) ◽  
pp. 16-20
Author(s):  
Nana Twum Duah ◽  
Prince Kofi Asamoah

Renewable energy sources are abundantly available in Africa due to the continent’s geographical location. For example, it is the sunniest continent on earth with about 85% of the landscape having solar insolation of approximately 2000 kWh/m2 in a year and also with a large stretch of coastline where both wind and wave energy resources are abundant. The available renewable energy sources are underutilised due to many challenges such as inadequate funds, bad or nonexistent policies, and unavailability of skilled labour. This paper, therefore, aims to investigate the impact of renewable energy on Africa and the world as a whole if these renewables are utilised efficiently. The paper again will look into the reasons why renewable energies in Africa are underutilised and recommend possible solutions to these problems as well. Moreover, the paper will discuss the social, economic and environmental impacts of utilising renewable energy in Africa regarding jobs creation, infrastructure development, revenue creation, and reduction of carbon emissions into the atmosphere. The efficient utilization of these renewable energy resources will make Africa a powerhouse of clean energy production for its use and export.


Author(s):  
Geoffrey S. Mutumba ◽  
Simon Echegu ◽  
Muyiwa S. Adaramola

This paper explores geothermal energy use as a renewable energy option in Uganda. It is discussed in pursuit of sustainable development. Uganda has been undergoing fast economic growth particularly as demonstrated by its resilience against the effects of COVID-19, it must develop its renewable energy resources to match this growth. In this paper, we present the findings of an exploratory research to ascertain potential of geothermal energy for Uganda of 1500MW (3.6% of overall energy potential). The prospects and challenges of geothermal energy development are discussed. In concluding remarks good policies with strong political will, manpower training, financial support for research, and financial and subsidy incentive programs.


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