scholarly journals Análisis del Potencial Energético Solar Basado en Mediciones in Situ en el Municipio de Acacías - Meta

2018 ◽  
Vol 3 (1) ◽  
pp. 690
Author(s):  
Angel Alejandro Rodriguez Aya ◽  
John Alejandro Figueredo Luna ◽  
Juan Alejandro Chica García
Keyword(s):  
Solar Energy ◽  
Solar Power ◽  
Cost Benefit ◽  
Energy Systems ◽  
Energy System ◽  
Photovoltaic System ◽  
Cost Benefit Ratio ◽  
The Cost ◽  
The University

This research presents the preliminary results of the research entitled Design and implementation of a fixed and mobile photovoltaic system to capture the solar power, determining the cost-benefit ratio for the Acacías CEAD, a study that will determine the solar power that affects the University National Open and Distance - UNAD of the municipality of Acacías and deliver a study to determine the solar radiation of the area, in order to verify the potentiality and feasibility of installing solar energy systems in the University and nearby areas; It has been possible to determine that solar power in the area per m² is close to 45% of that measured by IDEAM (Hydrology, Meteorology and Environmental Studies Institute in Colombia), with a potential absorption of 331W per day in an area of 1m², which makes feasible a possible implementation of a solar energy system. Keywords: Solar power, solar energy, solar panel, energy efficiency.

scholarly journals HYRES: A Multi-Objective Optimization Tool for Proper Configuration of Renewable Hybrid Energy Systems

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 26 ◽  
Author(s):  
Katheryn Donado ◽  
Loraine Navarro ◽  
Christian G. Quintero M. ◽  
Mauricio Pardo
Keyword(s):  
Life Cycle Cost ◽  
Cost Benefit ◽  
Energy Systems ◽  
Energy System ◽  
Climatic Conditions ◽  
Hybrid Energy ◽  
Multi Objective ◽  
Viability Analysis ◽  
Hybrid Renewable Energy System ◽  
Cost Benefit Ratio

This paper presents the Hybrid Renewable Energy System (HYRES), a powerful tool to contribute to the viability analysis of energy systems involving renewable generators. HYRES considers various input parameters related to climatic conditions, statistical reliability, and economic views; in addition to offering multi-objective optimizations using Genetic Algorithms (GAs) that have a better cost-benefit ratio than mono-objective optimization, which is the technique used in several commercial systems like HOMER, a worldwide leader in microgrid modeling. The use of intelligent techniques in HYRES allows optimal sizing of hybrid renewable systems with wind and solar energy generators adapted to different conditions and case studies. The elements that affect the system design like buying and selling energy from/to the grid and the use of storage units can be included in system configuration according to the need. Optimization approaches are selectable and include Initial Cost, Life Cycle Cost, Loss of Power Probability, and Loss of Power Supply Probability.

Sustainability Assessment of Solar Energy Systems

Solar Energy ◽  
2004 ◽  
Author(s):  
Naim H. Afgan ◽  
Marina Jovanovic ◽  
Maria G. Carvalho
Keyword(s):  
Solar Energy ◽  
Sustainability Assessment ◽  
Social Indicators ◽  
Electric Energy ◽  
Energy Systems ◽  
Energy System ◽  
Photovoltaic System ◽  
Evaluation Procedure ◽  
Multi Criteria Evaluation ◽  
Optimization Function

Solar energy systems are becoming potential option for numerous applications. It has been shown that the application of solar energy system is strongly dependent on criteria’s used in their evaluation. Single criteria evaluation of solar energy systems has shown its deficiency due to limited possibility to compare them with other potential options. In particular, present economic system is based on the econometric analysis with priority given to the optimum obtained by the economically justified optimization function. For this reason, it has become needed to introduce multi-criteria evaluation procedure in the assessment of solar energy system and its comparison with other potential options. This paper presents evaluation of the solar photovoltaic system and its comparison with other renewable energy system options for stand-alone application. In this evaluation following energy systems will be taking into a consideration: grid electric energy supply, wind energy system, gas turbine with cogeneration, small hydro energy system and solar photo-voltaic energy system. In the evaluation of these systems the multi-criteria evaluation procedure is used. The multi-criteria evaluation procedure will comprise a following criteria’s: economic, environmental, technological and social indicators. Each of indicators will be based on the sub-criteria which are defined in the paper. The sustainability index as the agglomeration function indicators will be used in the determination of the rating among the options under consideration. Special emphasize in evaluation is given to to the conditional priority of indicators leading to the investigation of the effect of the indicator priority to the finale rating among options.

PRIORITIZATION OF RENEWABLE SOLAR ENERGY TO PREVENT ENERGY INSECURITY: AN INTEGRATED ROLE

2020 ◽  
pp. 1-22 ◽  
Author(s):  
ROBINA IRAM ◽  
MUHAMMAD KHALID ANSER ◽  
REHMAT ULLAH AWAN ◽  
AMJAD ALI ◽  
QAISER ABBAS ◽  
...  
Keyword(s):  
Solar Energy ◽  
Rural Areas ◽  
Solar Power ◽  
Selection Process ◽  
Mathematical Formulation ◽  
Energy Systems ◽  
Energy System ◽  
Multiple Point ◽  
Energy Potential ◽  
Power Point

Renewable energy decreases the threat of energy insecurity. Solar energy systems are proving to be an easy and cheaper solution to energy crisis worldwide. Developing countries including Pakistan have augmented efforts to boost the current solar capacity. The identification of desired solar power point plant fabrication requires robust analysis of several factors. Adequate research has not been done on the site selection process for solar projects in Pakistan. This study identifies and proposes multiple point states having solar energy potential. Based on the multiple main and sub-criteria obtained from the literature, a mathematical formulation has been used to install the solar projects at rural areas of Pakistan. An empirical assessment of the off-grid rural solar power projects in Pakistan has also been conducted in this case study. The results reveal that mass, money supply and ratio are important, while the transmission on the matrix, the cost of land and the sun were generated. The study found the district of Barkhan (R2) of Baluchistan to be the most ideal site, followed by Jacobabad (R3) and Mastung (R3). With respect to economic viability, this study found that solar energy systems provide electricity which is much cheaper than conventional energy supplied in the country. This study could be useful reference for South Asian countries including India, Bangladesh, and Afghanistan, which are currently electrifying remote and rural areas through solar energy system.

Is Prophyilaxis Necessary after Urodynamic Tests? Our Experience

2009 ◽  
Vol 76 (2) ◽  
pp. 98-100
Author(s):  
R. Pizzorno ◽  
G. Canepa ◽  
A. Simonato ◽  
M. Esposito ◽  
T. Montanaro ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Cost Benefit ◽  
Urodynamic Study ◽  
Urodynamic Investigation ◽  
Benefit Ratio ◽  
E Coli ◽  
M 10 ◽  
Cost Benefit Ratio ◽  
The Cost ◽  
The University

Urodynamic studies should be performed only on patients with sterile urine. The use of prophylaxis after urodynamic investigation is debated (positive urinoculture in 9 to 15% of cases). The Units of Urodynamics at the Urological Clinic of the University of Genoa and of the Galliera Hospital of Genoa assessed the prevalence of bacteriuria on a sample of 336 patients (314 females and 22 males), average age 62.3, between January and December 2006. All patients with sterile urine before examination underwent a complete urodynamic test. Concomitant diseases were: diabetes (7.7%), multiple sclerosis (3.5%), Parkinson's disease (1.2%), urinary retention treated by autocatheterism (1.2 %). Urinoculture was performed seven days after the urodynamic study. All patients were asymptomatic; 40/336 urinocultures were positive (E. coli 80%, Proteus M. 10%, other 10%). The prophylaxis does not eliminate but only reduces post-urodynamic infections; we believe that the cost-benefit ratio is unfavorable.

Hybrid Solar Energy System as Alternative Power Supply in Mindanao State University-Sulu: Impact on Quality Services

2021 ◽  
Vol 4 (2) ◽  
pp. 391-406
Author(s):  
Maryjoy A. Busaña
Keyword(s):  
Solar Energy ◽  
Power Supply ◽  
Solar Power ◽  
Energy System ◽  
School Administrator ◽  
Quality Service ◽  
State University ◽  
Alternative Power ◽  
The University ◽  
Teaching Personnel

To ascertain the hybrid solar energy system as alternative power supply in Mindanao State University-Sulu and its  impact to quality service, This study aims to investigate the extent of benefits of hybrid solar power in terms of a) cost, b) availability, and c.)sustainability, moreover, it also investigate its preferability of hybrid solar power over traditional electricity, while it identifies the significant impact of Hybrid Solar power as a source of power supply to the quality of service of MSU-Sulu Administration, significant correlation between the preferability level and the impact of Hybrid Solar power. The quantitative data was analysed and interpreted using statistical tools weighted arithmetic mean and correlation and for qualitative data which is the interview, thematic analysis was utilized. The researcher was able to analyzed the gathered data through Mix Method for the preferability of hybrid solar power over traditional electricity and hybrid solar power its impact to quality service were obtained. The respondents of this study were the forty eight (48) teaching personnel and thirty eight (38) non-teaching personnel and an expert on solar panels. Purposive and random Sampling was used in the selection of the respondents. The instruments of the study were Guided Interview Questions and survey questionnaire. The qualitative data were obtained from the interview by the expert on solar panels. The quantitative data checklist questionnaire were obtained personally by the researcher and validated by three (3) Experts. The study revealed that the use of hybrid solar energy system as an alternative power supply has an impact to the quality service of Mindanao State University-Sulu, thus, both teaching and non-teaching personnel preferred the use of Hybrid solar energy system over traditional electricity. The extent of benefits of hybrid solar power in term costs is feasible for the costs of its installation will be treated as an investment for its 5 or more years of use of its naturally free electric power supply. In the long run, the Hybrid Solar energy will ensure a return of investment in its electric consumption. In terms of availability, it is guaranteed available by the partner company and in terms of its sustainability, it can support the entire university for 5 year’s or more with quality solar equipment that it turns, the university will be able to provide quality service to its clientele. Hence, the following are the recommendations of the study. on research agenda, the school administrator should consider this study as beneficial to the school, the adaption of the Hybrid Solar Energy power to the electric supply of the Mindanao State University-Sulu, Quality service entails the need of uninterrupted power supply and this hybrid solar energy power is the solution, and Quality service rendered by both teaching and non-teaching personnel would be maximized with the help of this hybrid power energy system. On this note, the following are the recommended policy: School administrator must look into ways on the adaptation of the hybrid power energy system into the university, Rigorous planning and careful assessment on the applicability of hybrid solar energy power on each college as well as administrative offices, pioneered application among key services provider of the university like registrar and cashier’s office, gradual use of hybrid Solar Energy power among colleges, mainly on the enrolment process to the releasing of grades,  and School administrator should conduct a seminar to its constituents on the cognizance on the benefits of using solar power and raising an awareness on how to conserve Energy and use it in a proper way.

scholarly journals Study on the Implementation of a Solar Photovoltaic System with Self-Consumption in an Educational Building

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2214
Author(s):  
Carolina dos Santos Castilho ◽  
João Paulo N. Torres ◽  
Carlos A. Ferreira Fernandes ◽  
Ricardo A. Marques Lameirinhas
Keyword(s):  
Solar Energy ◽  
Financial Analysis ◽  
Energy System ◽  
Economic Feasibility ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Electricity Grid ◽  
System Versus ◽  
Solar Photovoltaic System ◽  
The Cost

In this work, the study of different remuneration schemes for the implementation of a solar energy system on a building was performed. The photovoltaic system was implemented on a public educational building, and four different schemes are compared to understand the economic feasibility of self-consuming solar energy with and without a battery system, versus selling to the electricity grid. The system performance is compared to the building’s needs, and the different consumption and grid-injection shares are analyzed. Three of the schemes are applied according to the conditions and requirements of the Portuguese Law, while the remaining one is not yet allowed, and so the legislation from another chosen country is considered. Lastly, a financial analysis was performed to evaluate and compare the feasibility of each project implementation. The results of this analysis show that both the non-legislated and legislated self-consumption schemes make for an attractive investment, and that savings resulting from the consumption of solar energy are much higher than the revenues from selling to the grid, which presents as the least attractive scheme. Finally, the battery implementation also does not show feasibility because the cost of technology is still too high, despite the reduction witnessed in recent years.

scholarly journals Sustainable Practices Improving the University Campus: Feasibility of A Photovoltaic System

2021 ◽  
Vol 7 (2) ◽  
pp. 43-53
Author(s):  
Jandira Menezes ◽  
J.C. Cury ◽  
L.M. Souza
Keyword(s):  
Return On Investment ◽  
Energy System ◽  
Cost Estimate ◽  
Photovoltaic System ◽  
University Campus ◽  
Viability Analysis ◽  
Energy Demands ◽  
A Value ◽  
The Cost ◽  
The University

This article aimed to discuss the principles of sustainability applied to the built environment, highlighting the importance of universities as replicators of these practices. To respond to a demand from the campus for more security in the energy supply, the work proposes the implementation of a solar photovoltaic energy system. For this, it carried out an economic viability analysis through bibliographic review activities, characterization of the study area, dimensioning of photovoltaic systems, budgets, cost analysis and payback calculation. The research evaluated the system’s implementation considering two energy demands, for the entire campus and for a smaller building. It was found that the CSL-UFSJ consumes, on average, 27,300.38 kWh, at a cost of US$ 2,736. Thus, an annual savings of US$ 32,833 is calculated. The cost estimate analyzes showed a value of US$ 139,784 for the implementation of the system. The return on investment time was  calculated for 4.3 and 4.9 years considering simple and discounted Payback respectively.It is estimated that the consumption of the DECEB building is 13,187.1 kWh with a cost of US$ 1,322 per month, which results in an annual savings of US$ 15,860. The cost estimate analyzes showed a value of US$ 40.601 for the implementation of the system and values of 4.3 and 4.9 years were obtained as return on investment time considering the calculations for simple and discounted Payback, respectively. The research demonstrates that the implementation of the photovoltaic solar energy generation system is feasible for both cases analyzed. 

Tissue- and development-specific induction and turnover of hsp70 transcripts from loci 87A and 87C after heat shock and during recovery inDrosophila melanogaster

2002 ◽  
Vol 205 (3) ◽  
pp. 345-358 ◽  
Author(s):  
S. C. Lakhotia ◽  
K. V. Prasanth
Keyword(s):  
Heat Shock ◽  
Cost Benefit ◽  
Cell Types ◽  
Specific Induction ◽  
Cost Benefit Ratio ◽  
Multiple Copies ◽  
The Stability ◽  
The Cost ◽  
Different Cell Types

SUMMARYThe haploid genome of Drosophila melanogaster normally carries at least five nearly identical copies of heat-shock-inducible hsp70 genes, two copies at the 87A7 and three copies at the 87C1 chromosome sites. We used in situ hybridization of the cDNA, which hybridizes with transcripts of all five hsp70 genes, and of two 3′ untranslated region (3′UTR; specific for the 87A7- and 87C1-type hsp70 transcripts) riboprobes to cellular RNA to examine whether all these copies were similarly induced by heat shock in different cell types of D. melanogaster. Our results revealed remarkable differences not only in the heat-shock-inducibility of the hsp70 genes at the 87A7 and 87C1 loci, but also in their post-transcriptional metabolism, such as the stability of the transcripts and of their 3′UTRs in different cell types in developing embryos and in larval and adult tissues. Our results also revealed the constitutive presence of the heat-shock-inducible form of Hsp70 in a subset of late spermatogonial cells from the second-instar larval stage onwards. We suggest that the multiple copies of the stress-inducible hsp70 genes do not exist in the genome of D. melanogaster only to produce large amounts of the Hsp70 rapidly and at short notice, but that they are specifically regulated in a developmental-stage-specific manner. It is likely that the cost/benefit ratio of not producing or of producing a defined amount of Hsp70 under stress conditions varies for different cell types and under different physiological conditions and, accordingly, specific regulatory mechanisms operating at the transcriptional and post-transcriptional levels have evolved.

Feasibility Study of Solar Energy System at the University of North Dakota

2019 ◽  
Author(s):  
Bo K. Yesel ◽  
Jonathan J. Eslinger ◽  
Michael Nord ◽  
Daisy Flora Selvaraj ◽  
Prakash Ranganathan
Keyword(s):  
Solar Energy ◽  
North Dakota ◽  
Feasibility Study ◽  
Energy System ◽  
University Of North Dakota ◽  
The University

Ultra-resistant schizophrenia and potentiation strategies

2017 ◽  
Vol 41 (S1) ◽  
pp. s834-s834 ◽  
Author(s):  
S. Khouadja ◽  
R. Ben Soussia ◽  
S. Younes ◽  
A. Bouallagui ◽  
I. Marrag ◽  
...  
Keyword(s):  
Treatment Resistance ◽  
Cost Benefit ◽  
Clinical Excellence ◽  
University Hospital ◽  
Dsm Iv ◽  
Competing Interest ◽  
A Prospective Study ◽  
Psychiatric Department ◽  
The Cost ◽  
The University

IntroductionTreatment resistance to clozapine is estimated at 40–70% of the treated population. Several clozapine potentiation strategies have come into clinical practice although often without evidence-based support.ObjectiveThe aim of our work was to identify the potentiation strategies in ultra-resistant schizophrenia depending on the subtype of schizophrenia.MethodologyThis is a prospective study conducted on patients with the diagnosis of schizophrenia, based on DSM-IV-TR criteria, and hospitalized in the psychiatric department of the university hospital in Mahdia, Tunisia. The study sample consisted of patients meeting the resistant schizophrenia criteria as defined by national institute for clinical excellence (NICE), and the prescription of clozapine for 6 to 8 weeks was shown without significant improvement.Resultswe have collected 10 patients. The mean serum level of clozapine was 462.25 mg/L. The potentiation strategies were different depending on the subtype of schizophrenia. For the undifferentiated schizophrenia, we have chosen ECT sessions. For the disorganized schizophrenia, we opted for amisulpiride and aripiprazole. For the paranoid forms, we have chosen the association of risperidone and ECT. A psychometric improvement was noted in BPRS ranging from 34 to 40%.ConclusionEvery potentiation strategy entails a cost, whether it is an additional monetary cost, adverse effects or greater stress to caregivers. The cost/benefit equation should be thoroughly evaluated and discussed before commencing a strategy.Disclosure of interestThe authors have not supplied their declaration of competing interest.

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