scholarly journals Techno-Economic Feasibility Analysis of a Stand-Alone Photovoltaic System for Combined Aquaponics on Drylands

2020 ◽  
Vol 12 (22) ◽  
pp. 9556
Author(s):  
Bateer Baiyin ◽  
Kotaro Tagawa ◽  
Joaquin Gutierrez
Keyword(s):  
Food Production ◽  
Meteorological Data ◽  
Soil Salinization ◽  
Economic Feasibility ◽  
Photovoltaic System ◽  
Power Demand ◽  
Sustainable Food ◽  
Cost Of Energy ◽  
One Year ◽  
Excess Power

An open-field cultivation combined-type aquaponic system (OCAS) was developed to effectively utilize saline groundwater and prevent soil salinization while ensuring food production in drylands. To achieve the sustainable food production of the OCAS in power-scarce areas, a stand-alone photovoltaic system (PVS) for the OCAS was designed through a feasibility study of utilizing solar energy to meet its power demand. As a case study, the OCAS was established in La Paz, Baja California Sur, Mexico, with power consumption 22.72 kWh/day and annual average daily global horizontal irradiation (GHI) 6.12 kWh/m2/day, considering the 2017 meteorological data. HOMER software was employed for performance analysis and techno-economic evaluation of an appropriate PVS. Thousands PVS configurations were evaluated in terms of total net present cost (NPC) and levelized cost of energy (COE). The PVS that fulfilled the power demand and had the smallest NPC was proposed, for which the NPC and COE were calculated as $46,993 and $0.438/kWh, respectively. The relationship between its annual power supply and power demand of the OCAS was also analyzed in detail. It was found that the operation hours and the amount of power generation by the proposed PVS were 4156 h and 19,106 kWh in one year. Additionally, it was predicted that the excess power would occur almost every afternoon and reach 43% of the generated power. Therefore, the COE can be further reduced by rationally utilizing the excess power during operation.

One-Year Evaluation of a 20 MW Photovoltaic Power Station

2013 ◽  
Vol 805-806 ◽  
pp. 143-148
Author(s):  
Li Ying Xie ◽  
Yun Lin Sun ◽  
Rui Jiang Hong
Keyword(s):  
Low Cost ◽  
Weather Conditions ◽  
Photovoltaic System ◽  
Test Field ◽  
Power Demand ◽  
Power Station ◽  
High Quality ◽  
Partial Shading ◽  
Photovoltaic Power ◽  
One Year

Grid-connected PV power station is one of the most important applications of photovoltaic system, generating low cost and high-quality electric power without non-renewable energy, as well as relaxing the tightness of daytime power demand. In China, it is usually installed on remote open area for low cost to guarantee the abundant solar power. However, this kind of place usually comes with tough weather conditions. In this paper, the property of the PV test field is estimated by its output characteristic. One inevitable and two avoidable reasons which affect the plant output are proposed. Firstly, the inevitable factor is weather, and the assessment analyzing the performance of PV power system under different weather conditions, such as sunny, cloudy, rainy and snowy is then presented. Secondly, losses owing to the mounting type and partial shading, which can be reduced by well designing and installing, are also mentioned and analyzed.

scholarly journals Simulation and Economic Analysis of Photovoltaic Rooftop System on the Female Dormitory

2020 ◽  
Vol 194 ◽  
pp. 02024
Author(s):  
Krittaphas Mongkoldhumrongkul
Keyword(s):  
Alternative Energy ◽  
Economic Feasibility ◽  
Photovoltaic System ◽  
Electricity Production ◽  
Life Meaning ◽  
Cost Of Energy ◽  
University Of Technology ◽  
Ordinary Type ◽  
Total Capacity ◽  
The Cost

Solar energy is an ordinary type of renewable energy accustomed to produce electricity. However, the photovoltaic system may confront risks and uncertainties for operation. King Mongkut’s University of Technology North Bangkok, Rayong campus (KMUTNB), situated in an area which is suitable for photovoltaic installation, plans to expand their alternative energy proportion. This research focuses on the design and economic feasibility of the photovoltaic rooftop system on the female dormitory. By using the System Advisor Model (SAM) program simulation, the total capacity of the panels is found to be about 198.23 kWp with a total electricity production of about 281.827 MWh per year. The economic results revealed that the photovoltaic rooftop system has the potential to produce electricity at a competitive price. The cost of energy is obtained for 0.1297 USD per kWh throughout the project’s life, meaning that the project would serve as a means of reducing 3,535.7327 tons of carbon dioxide equivalent.

scholarly journals Investigation of wind shear coefficients and their effect on annual energy yields along the coastal sites of Pakistan

2020 ◽  
pp. 014459872093042
Author(s):  
Muhammad Sumair ◽  
Tauseef Aized ◽  
Syed Asad Raza Gardezi ◽  
Syed Muhammad Sohail Rehman ◽  
Syed Ubaid ur Rehman
Keyword(s):  
Wind Speed ◽  
Energy Density ◽  
Wind Energy ◽  
Wind Power ◽  
Power Density ◽  
Wind Shear ◽  
Meteorological Data ◽  
Economic Feasibility ◽  
Wind Power Density ◽  
Cost Of Energy

Ten-year hourly recorded wind meteorological data at six sites along the coastline of Pakistan at two heights (10 and 50 m) were extrapolated to two higher heights (80 and 100 m). Monthly and seasonal analysis of variation in air density (ρ), wind speed, Weibull parameters ( K and C), wind power density, and wind energy density with height was investigated. Analysis shows that wind shear coefficient is highest in winter and lowest in summer. ρ, wind speed, wind power density, and wind energy density all increase with increasing hub height, with the most prominent increment in winter and the lowest in summer. With increasing height, K has been found to decrease slightly while C increases. Techno-economic feasibility analysis of annual energy production using 15 turbines was carried out which shows that capacity factor alone cannot render a turbine feasible but also economic assessment is mandatory to evaluate the feasibility of turbines. G1 and G2 turbines have been found the best options while B5 and V2 as the worst. Comparison among sites shows that Karachi is the most potential site with cost of energy of $0.017/kW h while Jiwani is the worst site with cost of energy of $0.039/kW h both at 100 m height.

scholarly journals VIABILIDADE ECONÔMICA DA ENERGIA FOTOVOLTAICA PARA IRRIGANTES NO NORTE DE MINAS E VALE DO JEQUITINHONHA

2021 ◽  
Vol 36 (1) ◽  
pp. 58-71
Author(s):  
Marcelo Rossi Vicente ◽  
Tarlei Aparecido Santos ◽  
Thalles Loiola Dias ◽  
Patrícia De Oliveira e Lucas ◽  
Ronaldo Medeiros dos Santos ◽  
...  
Keyword(s):  
Feasibility Studies ◽  
Working Hours ◽  
Minas Gerais ◽  
Economic Feasibility ◽  
Photovoltaic System ◽  
Economic Viability ◽  
Photovoltaic Energy ◽  
Cost Of Energy ◽  
Minas Gerais State ◽  
Weighted Values

VIABILIDADE ECONÔMICA DA ENERGIA FOTOVOLTAICA PARA IRRIGANTES NO NORTE DE MINAS E VALE DO JEQUITINHONHA   MARCELO ROSSI VICENTE1, TARLEI APARECIDO SANTOS2, THALLES LOIOLA DIAS1, PATRÍCIA DE OLIVEIRA E LUCAS1, RONALDO MEDEIROS DOS SANTOS1, CAIO VINICIUS LEITE3   1 Instituto Federal de Ensino, Ciência e Tecnologia do Norte de Minas Gerais – campus Salinas (IFNMG – campus Salinas), Fazenda Varginha, Rod. Salinas/Taiobeiras, Km 02, 39560-000, Salinas, Minas Gerais, Brasil. [email protected], [email protected], [email protected], [email protected]. 2 Departamento de Engenharia Cartográfica, Universidade Federal De Pernambuco (UFPE), Av. da Arquitetura, s/n, Cidade Universitária, 50740-550, Recife, Pernambuco, Brasil. [email protected]. 3 Instituto Federal de Ensino, Ciência e Tecnologia de Brasília – campus Planaltina (IFB - campus Planaltina), Rodovia DF – 128, km 21, Zona Rural, 73380-900, Planaltina, Distrito Federal, Brasil. [email protected]   RESUMO: Embora careçam de estudos de viabilidade, soluções baseadas em energia fotovoltaica têm se tornado muito atrativas para irrigantes, principalmente devido às constantes elevações nos custos de eletricidade. Com isso, objetivou-se realizar um estudo sobre a viabilidade econômica do uso da energia fotovoltaica para irrigação nas regiões do Vale do Jequitinhonha e Norte de Minas Gerais. Para a realização do trabalho utilizou-se a base de dados disponibilizada pelo Atlas Brasileira de Energia Solar e como índice de viabilidade econômica da energia fotovoltaica, o custo nivelado de energia (LCOE). Os valores de LCOE foram comparados com valores ponderados da tarifa de energia elétrica, em R$ kWh do Grupo Tarifário B2 Rural em diferentes cenários com jornadas de trabalho (noturna e diurna). Observou-se que quanto maior a radiação solar disponível e quanto maior a potência do sistema fotovoltaico, maior a tendência de viabilidade do investimento, em virtude da redução do LCOE. O uso de energia fotovoltaica é viável, com exceção das menores potências no Vale do Jequitinhonha e microrregiões limítrofes com o Norte de Minas, quando comparada ao uso exclusivo diurno da irrigação. O uso majoritário da tarifa com desconto noturno é uma alternativa à energia fotovoltaica quando se trata de viabilidade econômica.   Palavras - chave: irradiação solar, custo nivelado de energia, tarifa de energia elétrica.   ECONOMIC FEASIBILITY OF PHOTOVOLTAIC ENERGY FOR FARMERS IN NORTHERN MINAS GERAIS STATE AND JEQUITINHONHA VALLEY   ABSTRACT: Although there is a lack of feasibility studies, solutions based on photovoltaic energy have become attractive for farmers due to the constant increases in electricity costs. Thus, this paper aimed to evaluate economic viability of photovoltaic energy for irrigation in the regions of Jequitinhonha Valley and the Northern Minas Gerais State. The database uses in this study came form the Brazilian Atlas of Solar Energy was used. The levelized cost of energy (LCOE) was used as an economic viability index for photovoltaic energy.  The LCOE values were compared with the energy tariff weighted values, in R$ kWh, of the B2 Rural Tariff Group in different nights and day-working hours scenarios. It was observed that the greater the generation potential and the power of the photovoltaic system, the greater the trend of investment viability due to the LCOE reduction. The use of photovoltaic energy is feasible, except to lower powers in the Jequitinhonha Valley and Northern Minas Gerais State neighboring microregions, when compared to daytime irrigation. The mainly use of the nightly discounted energy tariff is an alternative to photovoltaic energy when it comes to economic viability.   Keywords: Solar radiation, LCOE, Energy tariff

scholarly journals An Economic Analysis of Small-Scale Standalone Photovoltaic System with Hydrogen Storage System

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Nur Dalilah Nordin ◽  
Hasimah Abdul Rahman
Keyword(s):  
Economic Analysis ◽  
Hydrogen Storage ◽  
Meteorological Data ◽  
Photovoltaic System ◽  
Small Scale ◽  
Optimal Size ◽  
Pv System ◽  
Levelized Cost ◽  
Cost Of Energy ◽  
Power Load

This paper proposes design steps in obtaining the optimal size of a standalone photovoltaic (PV) system, which is able to meet a predetermined power load requirement. The keys of the system sizing are primarily to satisfy a specific load demand that depends on the power generated from the installed PV system and also to maintain hydrogen storage state of charge. A case study was conducted using Kuala Lumpur's meteorological data and a typical rural area load profile of 2.215 kWh. An economic analysis on the system was performed in order to determine system feasibility. The levelized cost of energy for the proposed system was RM1.98/kWh. However, the results showed that if the same configuration used absorbent glass mat (AGM) battery as the backup power supply, the system cost and levelized cost of energy is lower. Therefore, a sensitivity analysis of the electrolyzer and fuel cell efficiencies towards levelized cost of energy for the proposed system was executed. The result indicates that unless the efficiency of hydrogen storage technologies significantly increases in the future, the system will not be feasible to be implemented in Malaysia.

Governing climate change for sustainable food production: A case study of emerging markets

2019 ◽  
Vol 3 (2) ◽  
pp. 64-75
Author(s):  
Robert Ddamulira
Keyword(s):  
Climate Change ◽  
Food Production ◽  
Extreme Weather Events ◽  
Sustainable Food ◽  
Role Of The State ◽  
Weather Events ◽  
Future Success ◽  
Governance Challenges ◽  
Change Impact ◽  
Document Review

This article addresses three research questions: How does climate change impact food production? What are the governance challenges associated with managing such impacts? What are the conditions for future success in managing the impacts of climate change on food production? To answer these questions, the researcher undertook a document review and analysis to address these various aspects with a major focus on East Africa. The study finds that climate change affects food production largely through its physical impacts on precipitation and increased the frequency of extreme weather events. Within a context of weak governance; climate change further challenges governance institutional structures and mechanisms. The study concludes that specific aspects of the prevailing climate change governance regime require major reforms (particularly the role of the state, corporations and civil society) while other climate governance mechanisms need to be completely overhauled (for example through establishment of a new World Environment Organization).

Characterization of putative salinity-responsive biomarkers in olive (Olea europaea L.)

2021 ◽  
pp. 1-11
Author(s):  
Monther T. Sadder ◽  
Ahmad F. Ateyyeh ◽  
Hodayfah Alswalmah ◽  
Adel M. Zakri ◽  
Abdullah A. Alsadon ◽  
...  
Keyword(s):  
Food Production ◽  
Stress Protein ◽  
Adaptor Protein ◽  
Structural Features ◽  
Nacl Stress ◽  
Soil Salinization ◽  
Limiting Factors ◽  
Stress Levels ◽  
Quality Water

Abstract Low-quality water and soil salinization are increasingly becoming limiting factors for food production, including olive – a major fruit crop in several parts of the world. Identifying putative salinity-stress tolerance in olive would be helpful in the future development of new tolerant varieties. In this study, novel salinity-responsive biomarkers (SRBs) were characterized in the species, namely, monooxygenase 1 (OeMO1), cation calcium exchanger 1 (OeCCX1), salt tolerance protein (OeSTO), proteolipid membrane potential modulator (OePMP3), universal stress protein (OeUSP2), adaptor protein complex 4 medium mu4 subunit (OeAP-4), WRKY1 transcription factor (OeWRKY1) and potassium transporter 2 (OeKT2). Unique structural features were highlighted for encoded proteins as compared with other plant homologues. The expression of olive SRBs was investigated in leaves of young plantlets of two cultivars, ‘Nabali’ (moderately tolerant) and ‘Picual’ (tolerant). At 60 mM NaCl stress level, OeMO1, OeSTO, OePMP3, OeUSP2, OeAP-4 and OeWRKY1 were up-regulated in ‘Nabali’ as compared with ‘Picual’. On the other hand, OeCCX1 and OeKT2 were up-regulated at three stress levels (30, 60 and 90 mM NaCl) in ‘Picual’ as compared to ‘Nabali’. Salinity tolerance in olive presumably engages multiple sets of responsive genes triggered by different stress levels.

scholarly journals A global database of diversified farming effects on biodiversity and yield

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Sarah K. Jones ◽  
Andrea C. Sánchez ◽  
Stella D. Juventia ◽  
Natalia Estrada-Carmona
Keyword(s):  
United Nations ◽  
Food Production ◽  
Food Systems ◽  
Biological Diversity ◽  
Meta Analysis ◽  
Farming Systems ◽  
Convention On Biological Diversity ◽  
Sustainable Food ◽  
Global Database ◽  
Diversified Farming Systems

AbstractWith the Convention on Biological Diversity conference (COP15), United Nations Climate Change Conference (COP26), and United Nations Food Systems Summit, 2021 is a pivotal year for transitioning towards sustainable food systems. Diversified farming systems are key to more sustainable food production. Here we present a global dataset documenting outcomes of diversified farming practices for biodiversity and yields compiled following best standards for systematic review of primary studies and specifically designed for use in meta-analysis. The dataset includes 4076 comparisons of biodiversity outcomes and 1214 of yield in diversified farming systems compared to one of two reference systems. It contains evidence from 48 countries of effects on species from 33 taxonomic orders (spanning insects, plants, birds, mammals, eukaryotes, annelids, fungi, and bacteria) of diversified farming systems producing annual or perennial crops across 12 commodity groups. The dataset presented provides a resource for researchers and practitioners to easily access information on where diversified farming systems effectively contribute to biodiversity and food production outcomes.

scholarly journals An intelligent management system for aquaponics

2021 ◽  
Vol 69 (4) ◽  
pp. 345-350
Author(s):  
Divas Karimanzira ◽  
Thomas Rauschenbach
Keyword(s):  
Food Production ◽  
Large Scale ◽  
Optimum Conditions ◽  
Sustainable Food ◽  
Water Recirculation ◽  
Increase Productivity ◽  
Intelligent Management ◽  
Set Up ◽  
Aquaculture Production ◽  
The Eu

Abstract Population rise, climate change, soil degradation, water scarcity, and food security require efficient and sustainable food production. Aquaponics is a highly efficient way of farming and is becoming increasingly popular. However, large scale aquaponics still lack stability, standardization and proof of economical profitability. The EU-INAPRO project helps to overcome these limitations by introducing digitization, enhanced technology, and developing standardized modular scalable solutions and demonstrating the viability of large aquaponics. INAPRO is based on an innovation a double water recirculation system (DRAPS), one for fish, and the other one for crops. In DRAPS, optimum conditions can be set up individually for fish and crops to increase productivity of both. Moreover, the integration of digital technologies and data management in the aquaculture production and processing systems will enable full traceability and transparency in the processes, increasing consumers’ trust in aquaculture products. In this paper, the innovations and the digitization approach will be introduced and explained and the key benefits of the system will be emphasized.

scholarly journals Techno-economic feasibility analysis of a 3-kW PV system installation in Nepal

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Ramhari Poudyal ◽  
Pavel Loskot ◽  
Ranjan Parajuli
Keyword(s):  
Net Present Value ◽  
Meteorological Data ◽  
Electric Energy ◽  
Simulation Software ◽  
Economic Feasibility ◽  
Performance Ratio ◽  
Energy Output ◽  
Solar Pv ◽  
Economic Returns ◽  
Pv System

AbstractThis study investigates the techno-economic feasibility of installing a 3-kilowatt-peak (kWp) photovoltaic (PV) system in Kathmandu, Nepal. The study also analyses the importance of scaling up the share of solar energy to contribute to the country's overall energy generation mix. The technical viability of the designed PV system is assessed using PVsyst and Meteonorm simulation software. The performance indicators adopted in our study are the electric energy output, performance ratio, and the economic returns including the levelised cost and the net present value of energy production. The key parameters used in simulations are site-specific meteorological data, solar irradiance, PV capacity factor, and the price of electricity. The achieved PV system efficiency and the performance ratio are 17% and 84%, respectively. The demand–supply gap has been estimated assuming the load profile of a typical household in Kathmandu under the enhanced use of electric appliances. Our results show that the 3-kWp PV system can generate 100% of electricity consumed by a typical residential household in Kathmandu. The calculated levelised cost of energy for the PV system considered is 0.06 $/kWh, and the corresponding rate of investment is 87%. The payback period is estimated to be 8.6 years. The installation of the designed solar PV system could save 10.33 tons of CO2 emission over its lifetime. Overall, the PV systems with 3 kWp capacity appear to be a viable solution to secure a sufficient amount of electricity for most households in Kathmandu city.

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