scholarly journals Prediction and Optimization of the Cost of Energy Resources in Greek Public Hospitals

Energies ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 381
Author(s):  
Paraskevi N. Zaza ◽  
Anastasios Sepetis ◽  
Pantelis G. Bagos
Keyword(s):  
Total Energy ◽  
Energy Cost ◽  
Alternative Energy ◽  
Public Hospitals ◽  
Energy Resources ◽  
Energy Requirements ◽  
Renewable Energy Resources ◽  
Large Variability ◽  
Targeted Interventions ◽  
Operational Data

The continuous operation and the specialized conditions needed for safely delivering healthcare services make hospitals among the most expensive buildings. Several studies in different countries have investigated the potential role and contribution of macroscopic indices of hospitals in total energy requirements. In this work, we tried to investigate the energy requirements of Greek hospitals in terms of cost. We collected data from all public hospitals in Greece over a 2 year period (2018–2019) and evaluated the contribution of various factors in the total energy cost. The data revealed large variability by region and by hospital, even regarding structures of the same category and size. The analysis also showed that structural and operational data of each hospital differently influence the hospitals’ energy requirements. Using regression methods, we developed two models for calculating annual energy costs. One only contains hospital structural data (number of beds, type of hospital, number of employees, and the non/use of alternative energy sources such as natural gas), and it reached an R² of 0.84. The second model contains not only structural but also operational data from each hospital (number of the internal patients, number of surgeries and number of medical imaging tests), and it reached an R² of 0.87. The former model is easier to compute since it only relies on data that can be easily gathered, but the latter has slightly better performance. These tools can help the Ministry of Health and hospitals’ management to identify the factors that contribute to the energy cost in order to plan targeted interventions, be well-prepared regarding budgeting, and be able to progressively measure, monitor, and improve the environmental footprint of hospitals by investing in renewable energy resources.

Designing and Fabricating of Low Cost Thermoelectric Power Generators

2011 ◽  
Vol 110-116 ◽  
pp. 4101-4105 ◽  
Author(s):  
Tosawat Seetawan
Keyword(s):  
Transition Metal Oxides ◽  
Thermoelectric Materials ◽  
Alternative Energy ◽  
Low Cost ◽  
Thermoelectric Module ◽  
Clean Energy ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Thermoelectric Coolers ◽  
P Type

Fossil fuel is the main energy resources of the world. About 80-90% of its primary energy need to supply by oil, coal, natural gas, and oil shale [1]. These energy resources will also be of importance in the future but non-renewable and cause problems to the environment as a result of their relatively high amount of carbon dioxide (CO2), carbon monoxide (CO), and other environmentally harmful emissions. We are investigating to look for alternative energy resources which are clean, safe, and long-term reliable. Thermoelectricity is one of the renewable energy resources that has been widely investigated and is expected to be feasible in the near future. Moreover, it is a clean energy generation, since it can directly convert heat to electrical energy by using non-polluting thermoelectric devices. These are reasons for the growing interest in further research and development of the thermoelectric technology. The search for new thermoelectric materials is important that the transition metal oxides were interested such as p-type Ca3Co4O9 [2-7] and n-type CaMnO3 [8-12]. There have been synthesized using different techniques in the form of powder and bulk. However, the doped metals have been expected to be one of the candidates for good thermoelectric materials, including thermoelectric module consists of two or more materials of p-type and n-type [13-15]. Recently, the thermoelectric module is also being used as the thermoelectric generators, thermoelectric coolers, etc. [16-17].

Renewable Energy Sources Management and Role of Ecological Parks

2019 ◽  
pp. 220-228
Author(s):  
Biljana Stojan Ilic
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Modern Technology ◽  
The State ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Industrial Parks

On the global level, governments are leading the national policy for development of modern technology and alternative energy resources. The tendencies of sustainable development are reflected in the realization of using renewable energy resources that contribute to a more diversified and more efficient use of clean energy. The aim of this chapter is to represent adequate responses to the efficient management at the state level that created all necessary conditions for sustainable development and energy efficiency using renewable energy resources in countries of European Union. Legal regulations, energy policy, short, medium and long-term strategy with a stimulating policy, can contribute for achieving adequate results in terms of sustainable development. The aims of this policy would be reflected in the development of eco-industrial parks and clean energy that contribute development of new companies, employment, on the state budget and local government levels.

Renewable Energy Sources Management and Role of Ecological Parks

2021 ◽  
pp. 193-202
Author(s):  
Biljana Stojan Ilic
Keyword(s):  
Sustainable Development ◽  
Renewable Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
Modern Technology ◽  
The State ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Industrial Parks

On the global level, governments are leading the national policy for development of modern technology and alternative energy resources. The tendencies of sustainable development are reflected in the realization of using renewable energy resources that contribute to a more diversified and more efficient use of clean energy. The aim of this chapter is to represent adequate responses to the efficient management at the state level that created all necessary conditions for sustainable development and energy efficiency using renewable energy resources in countries of European Union. Legal regulations, energy policy, short, medium and long-term strategy with a stimulating policy, can contribute for achieving adequate results in terms of sustainable development. The aims of this policy would be reflected in the development of eco-industrial parks and clean energy that contribute development of new companies, employment, on the state budget and local government levels.

Turkey's Renewable Energy Potential

2021 ◽  
pp. 120-129
Author(s):  
Suudan Gökçe Gök
Keyword(s):  
Renewable Energy ◽  
Alternative Energy ◽  
Renewable Energy Sources ◽  
Energy Resources ◽  
Fuel Oil ◽  
Electricity Production ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Alternative Energy Sources ◽  
The World

The energy sector holds a crucial strategic importance for development and its sustainability. However, the energy reserves in Turkey are insufficient for the increasing energy demand. For this reason, the need for alternative energy sources has emerged. The fact that fossil fuels used in energy production will be exhausted and their damaging effects on the environment has made it inevitable for the world to use renewable energy. In Turkey, the following are the main energy sources used in electricity production: hydraulic sources, brown coal, natural gas, coal and fuel oil. The use of renewable energy sources in electricity production has shown a considerable development in the world over the past few decades. However, these energy resources have yet to be exploited to any large extent in Turkey. In this chapter, the range of potential renewable energy resources available for electricity production in Turkey will be analyzed in order to determine the necessary technical substructure to make these renewable energy resources more attractive.

scholarly journals A Research on Electricity Generation from Wind Corridors of Pakistan (Two Provinces): A Technical Proposal for Remote Zones

2017 ◽  
Vol 9 (9) ◽  
pp. 1611 ◽  
Author(s):  
Mazhar Baloch ◽  
Safdar Abro ◽  
Ghulam Sarwar Kaloi ◽  
Nayyar Mirjat ◽  
Sohaib Tahir ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Wind Speed ◽  
Wind Energy ◽  
Alternative Energy ◽  
Cost Effective ◽  
Load Shedding ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Average Wind Speed ◽  
Advantages And Disadvantages

The non-renewable energy resources are limited and depleting gradually. As such, energy security has attained the greatest amount of attention globally than ever before. In the meantime, energy crises are already affecting the developing countries such as Pakistan, even though one-third of the population of the country is not even not connected to the national electricity grid. The population with access to on-grid electricity is enduring load shedding of more than 12 h a day. This situation is alarming and require immediate attention is required so as to add alternative energy resources to the country, which has long been relying on imported fuels. It is, therefore, high time that the abundant potential in the renewable energy resources of Pakistan such as solar, wind, and biomass are harnessed. These renewable energy resources are economical and environmentally friendly, and thus considered as sustainable, and the utilization of these in meeting energy demands can help to conserve conventional resources early diminishing. This paper provides a detailed description of the energy consumption and load-shedding scenario in Pakistan thereby focusing specifically Sindh and Baluchistan provinces. Since, wind energy is considered one of the cost-effective renewable resources, six potential sites in these two provinces are considered in this study. These sites lie within 250 km of the southeastern and 800 km of the southwestern regions of Pakistan. One-year wind speed data have been reported for variable heights of these proposed sites which represent to have an annual average wind speed of 6.63 m/s and 5.33 m/s respectively. The power generation data for these location of two provinces is 7.653 GWh, and 5.456 GWh per annum respectively. This study also elaborates on the advantages and disadvantages of harvesting and installing the wind energy and provides a technical proposal for the generation of electricity from the wind in the selected remote zones which are off the national grid. The findings of this paper will help concerned government departments to devise appropriate policies and attract investment in the wind energy sector to eradicate the on-going electricity crisis.

scholarly journals Potential of Sorghum Varieties as Biofuel

Agromet ◽  
2021 ◽  
Vol 35 (2) ◽  
pp. 108-115
Author(s):  
Muhammad Noor Ariefin ◽  
Puji Harsono ◽  
Amalia Tetrani Sakya
Keyword(s):  
Alternative Energy ◽  
Fossil Fuels ◽  
Current Knowledge ◽  
Block Design ◽  
Sugar Content ◽  
Energy Resources ◽  
Growth And Yield ◽  
Renewable Energy Resources ◽  
Dry Land ◽  
Randomized Block Design

The downside of fossil fuels as non-renewable energy resources in Indonesia has led to invent alternative energy resources. One of alternative sources is biofuels, which are derived from organic compound that originated from plants and living creatures. Here, we used sorghum as a source of biofuels, but current knowledge of sorghum cultivation on dry land is limited. This study aims to determine the influence of sorghum genotypes on their growth and yield in a dry land, and to analyze the potential of sorghum as biofuels. This research was carried out in low land, on vertisol soil, from August to November 2020. We applied a completely randomized block design with one factor and 3 replications. Seven sorghum varieties were identified namely Numbu, Super 1, Suri 3, Keller, Kawali, Black Sorghum, and Bioguma-2. The results showed that each variety had different genetical properties leading to various growth rates in both vegetative and generative phases. Our finding revealed that Keller variety was the most productive sorghum plant as it produced the highest sugar content (20°Brix). Also, Keller was the tallest plants (>300 cm) compared to other varieties. Bioguma-2 was the second, which was proven by its longest stem (307 cm) and high stem sap content (18°Brix). Thus, we recommended the Keller and Bioguma-2 as the suitable sorghum variety to be utilized in biofuels manufacturing.

scholarly journals A Prediction on Nigeria's Oil Depletion Based on Hubbert's Model and the Need for Renewable Energy

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Udochukwu B. Akuru ◽  
Ogbonnaya I. Okoro
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Alternative Energy ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Oil Reserves ◽  
Domestic Use ◽  
Oil Sector ◽  
Bell Shaped Curve ◽  
Time Point

The paper examined Nigeria's oil sector in order to get a time point of total depletion. Data for production rate, P, was sourced from 1958–2008 for the study. This research employed Hubbert's Model that based the peaking of oil reserves on the simulation of a bell-shaped curve that rises rapidly to a peak and declines just as quickly. MATLAB tool was employed in the analysis of data. Findings include that there is an imminent decline in Nigeria's oil reserve since peaking could have occurred or just about to occur; this is shown to be in agreement with previous studies, and an account of how oil depletion will affect domestic use of energy is also highlighted. Recommendations amongst others include the immediate adoption of Hirsch Report on the employment of mitigation efforts like alternative energy investments in order to tackle the dire effects which may come as economic, social, and political demands in the wake of a sudden decline, as well as domesticating energy retail by setting up small- and medium-scale enterprises (SMEs) which are empowered to provide basic energy source using renewable energy resources.

scholarly journals INTERNETWORKING OF SOLAR ENERGY USING ARDUINO BASED TRACKING SYSTEM

2020 ◽  
pp. 313-315
Author(s):  
Ms. Aparajita Gogoi
Keyword(s):  
Solar Energy ◽  
Alternative Energy ◽  
Tracking System ◽  
Energy Resources ◽  
Energy Sources ◽  
Human Beings ◽  
Solar Panels ◽  
Renewable Energy Resources ◽  
Air Conditioners ◽  
Solar Tracker

Since the dawn of civilization, human beings have been using different energy sources in order to fulfil their various requirements. Energy is one of the human civilization’s basic requirements for development. For example – electricity powers our household appliances like TV, air-conditioners, phones , washing machines etc. We also use energy to run vehicles like cars, buses and trains and it is used to run most industries and factories. Most of these energy sources are non-renewable in nature, and might get depleted soon, such as the Oil and coal. This creates a requirement for renewable energy resources which has cheap costs. Solar energy is considered as one of the main energy resources in warm countries. Also solar energy is a clean, easily accessible and abundantly available alternative energy source in nature and has been used traditionally since ages in the absence of energy sources. Hence we require a system which will be able to efficiently utilize solar energy such as solar panels but these have some drawbacks as they don’t rotate with the movement of the sun, hence the need arises for that of a solar tracker. KEYWORDS- IoT, Ldr, Servomotors, Solar Panel

scholarly journals Phumdis-A Promising Alternative Energy Resource

2021 ◽  
Author(s):  
Ayesha Siddiqua ◽  
Sweekrity Kanodia ◽  
Jincy Jacob ◽  
Darwilin Khumanthem ◽  
Keke Thakhell ◽  
...  
Keyword(s):  
Alternative Energy ◽  
Energy Resource ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Eastern India ◽  
Promising Alternative ◽  
Alternative Energy Source ◽  
Loktak Lake ◽  
North Eastern ◽  
Calorific Content

ABSTRACTThe inadequate sources of energy coupled with the increasing demands of power have necessitated the search for novel renewable energy resources. ‘Phumdis’ are one such promising alternative. Phumdis are floating mats of heterogeneous mass of vegetation, soil and organic matter found in Loktak Lake in Manipur, North Eastern India. This paper delineates the use of Phumdis as an alternative energy source. Phumdis from Loktak Lake, Manipur were processed and analyzed for their biofuel capabilities. The Results indicate that the phumdis have high calorific content, cloudpoint and flash point indicating that they are at par with other fuels.

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