scholarly journals Invernadero utiliza energía solar para el control de temperatura

2019 ◽  
pp. 17-23
Author(s):  
Eva Claudia Pérez-Ortega ◽  
Alberto Chavira-Álvarez
Keyword(s):  
Carbon Dioxide ◽  
Solar Energy ◽  
Electric Energy ◽  
Photovoltaic System ◽  
Operating Costs ◽  
National Council ◽  
Atmospheric Emissions ◽  
Climate Control ◽  
Technological University ◽  
A Company

A company dedicated to the branch of vegetables in Jiménez city, Chihuahua, MX. Through a project with the National Council of Science and Technology (CONACyT) linked to the Technological University of Chihuahua, they develop a prototype of a greenhouse based on the use of solar energy in order to reduce the use of LP gas for heating the greenhouse and the implementation of chimneys worked under the Venturi principle, which is estimated to reduce the use of electric fans and extractors. The greenhouse construction is 60 x 70 meters. The electronic greenhouse system allows measuring, controlling, automating and monitoring the temperature and humidity parameters. Climate control of the greenhouse is possible thanks to the use of sensors of different climatic variables such as temperature, humidity, wind speed and carbon dioxide. The implementation of the solar thermal and photovoltaic system, with the synergy of electronics and automation achieves an efficient saving of electric energy through the designed prototype Objectives: Develop a greenhouse prototype with the operation based on the use of solar energy for the conditioning of its facilities (cooling and heating), allowing a significant reduction in its operating costs by reducing the use of fuels such as gas and electricity and consequently a decrease in atmospheric emissions

scholarly journals Application of Energy Efficiency in A Company Through A Photovoltaic Energy System on Grid

2020 ◽  
Vol 8 (11) ◽  
pp. 634-645
Author(s):  
Samuel Guimaraes Ferreira ◽  
Livia Da Silva Oliveira ◽  
David Barbosa de Alencar
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Solar Energy ◽  
Energy Demand ◽  
Energy System ◽  
Photovoltaic System ◽  
Technical Feasibility ◽  
Useful Life ◽  
A Company ◽  
Over Time

Energy consumption is a major factor in relation to an organization's costs and expenses, determining the need to apply methods that can minimize or reduce these expenses as much as possible. Having these factors in context, the present work aims to present the technical feasibility of implementing a project that uses solar energy through the on-grid solar system to supply the energy demand of a company. The methodology used was the descriptive, in which several data were collected and documentations were analyzed that supported and justified the elaboration of a photovoltaic project and development of the budget and analysis of the costs of a solar energy system. Through the results obtained, it was possible to arrive at a solar project that would be able to establish the necessary power for the company for a cost of R $ 20,916.96 and a payback of 5 years and 5 months. Thus, it is possible to conclude that the photovoltaic system is viable in its use and application, not only because of the advantages associated with the environment, but taking into account its self-sustainability over time and with a useful life of up to 25 years.

EXPERIMENTAL STUDIES OF CARBON DIOXIDE INTAKE INTO THE ROOM FROM A PERSON ENGAGED IN MENTAL WORK

2021 ◽  
pp. 30-38
Author(s):  
Дмитрий Валерьевич Лобанов ◽  
Игорь Иванович Звенигородский ◽  
Александр Александрович Мерщиев ◽  
Роман Александрович Шепс
Keyword(s):  
Carbon Dioxide ◽  
Experimental Studies ◽  
Individual Characteristics ◽  
Mental Activity ◽  
Operating Costs ◽  
Breathing Zone ◽  
Climate Control ◽  
Mental Work ◽  
The Individual ◽  
Ventilation Systems

Умственный труд достаточно разнообразен и характеризуется различной степенью ответственности, монотонности, внимания, уровнем эмоционального напряжения. Для обеспечения комфортных условий пребывания человека на постоянном рабочем месте, необходимо в том числе организовывать системы климатизации. Наиболее перспективными для указанной деятельности, являются персональные системы вентиляции, обеспечивающие качественную воздушную среду в зоне дыхания человека при одновременном снижении капитальных и эксплуатационных затрат по сравнению с традиционными видами систем вентиляции (смешивающая, вытесняющая вентиляция). Однако, при проектировании таких систем следует ориентироваться не на «среднего условного человека», а учитывать индивидуальные особенности работника (возраст, пол и др.), выполняющего конкретный вид умственной деятельности. С целью уточнения фактической величины углекислого газа, выделяемого человеком при определенной умственной работе, проведены натурные экспериментальные исследования, результатом которых является подтверждение характера и динамики изменения углекислого газа в помещении при отсутствии (бездействии) вентиляционных систем (линейная зависимость), а также уточнение величины выделяющейся двуокиси углерода при конкретном виде умственной деятельности (исследовался труд инженера-проектировщика). Intellectual work is quite diverse and is characterized by different degrees of responsibility, monotony, attention, the level of emotional tension. In order to ensure comfortable conditions for a person staying at a permanent workplace among other things it is necessary to arrange climate control systems. The most promising ventilation systems for the above activities are personal ones that provide high-quality air environment in the breathing zone of a person while reducing capital and operating costs compared with traditional types of ventilation systems (mixing, displacement ventilation). However, the design of such systems should be guided not by the "average conditional person" but by the individual characteristics of the worker (age, gender, etc.) performing a particular type of mental activity. In order to clarify the actual value of carbon dioxide emitted by a person doing a particular mental work, we conducted a series of field experimental studies. They resulted in confirmation of the nature and dynamics of changes in carbon dioxide in the room in the absence (inactivity) of ventilation systems (linear dependence). As well we clarified the value of emitted carbon dioxide at a particular type of mental activity (in this article we studied the work of an engineer-designer).

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.

scholarly journals IMPLEMENTACIÓN DE UN SISTEMA FOTOVOLTÁICO EN EL DISTRITO DE SAN BORJA, PARA APROVECHAR LA ENERGÍA SOLAR DURANTE LOS MESES DE VERANO

2016 ◽  
Vol 26 (1) ◽  
pp. 115
Author(s):  
Harry A. Rivera Tito ◽  
María E. Quintana Caceda ◽  
Vanessa Teixeira Roth
Keyword(s):  
Carbon Dioxide ◽  
Solar Energy ◽  
Electric Power ◽  
Solar Power ◽  
Electrical Power ◽  
Photovoltaic System ◽  
Pv System ◽  
Carbon Dioxide Co2 ◽  
Coast Region

RESUMENEn este trabajo exponemos un método para abastecer de energía eléctrica a un grupo de personas que habitan en el distrito de San Borja – Lima, a través de un Sistema Fotovoltaico (SFV), lo cual no es común en la zona. Esto ayudará a disminuir los niveles de emisión de dióxido de carbono (CO2) a la atmósfera. Se ha determinado mediante el Atlas Solar del Perú que la potencia solar en la región de la costa alcanza al día un promedio, en el mes de marzo, de 6 a 6,5 kW.h/m2, si convertimos este dato a energía, es equivalente de 21,6 a 23,4 MJ/m2, lo cual es provechoso para el proyecto.Palabras clave- Energía solar, irradiancia, sistema fotovoltaico y energía eléctrica. ABSTRACTThrough this work we explain a method to provide electrical power to a group of people living in the district of San Borja - Lima, through a PV system, which is not common in the area. This would help to reduce emission levels of carbon dioxide (CO2) to the atmosphere. It has been determined by the Solar Atlas of Peru that the coast region solar power reaches 6 to 6,5 kW.h/m2 per day, average in the month of March, if we convert this data to energy is equivalent to 21,6 to 23,4 MJ/m2, which is of great advantage for the proyect.KeyWords.- Solar energy, irradiance, photovoltaic system and electric power.

scholarly journals IMPLEMENTACIÓN DE UN SISTEMA FOTOVOLTÁICO EN EL DISTRITO DE SAN BORJA, PARA APROVECHAR LA ENERGÍA SOLAR DURANTE LOS MESES DE VERANO

2016 ◽  
Vol 26 (1) ◽  
pp. 115
Author(s):  
Harry A. Rivera Tito
Keyword(s):  
Carbon Dioxide ◽  
Solar Energy ◽  
Electric Power ◽  
Solar Power ◽  
Electrical Power ◽  
Photovoltaic System ◽  
Pv System ◽  
Carbon Dioxide Co2 ◽  
Coast Region

RESUMENEn este trabajo exponemos un método para abastecer de energía eléctrica a un grupo de personas que habitan en el distrito de San Borja – Lima, a través de un Sistema Fotovoltaico (SFV), lo cual no es común en la zona. Esto ayudará a disminuir los niveles de emisión de dióxido de carbono (CO2) a la atmósfera. Se ha determinado mediante el Atlas Solar del Perú que la potencia solar en la región de la costa alcanza al día un promedio, en el mes de marzo, de 6 a 6,5 kW.h/m2, si convertimos este dato a energía, es equivalente de 21,6 a 23,4 MJ/m2, lo cual es provechoso para el proyecto.Palabras clave- Energía solar, irradiancia, sistema fotovoltaico y energía eléctrica. ABSTRACTThrough this work we explain a method to provide electrical power to a group of people living in the district of San Borja - Lima, through a PV system, which is not common in the area. This would help to reduce emission levels of carbon dioxide (CO2) to the atmosphere. It has been determined by the Solar Atlas of Peru that the coast region solar power reaches 6 to 6,5 kW.h/m2 per day, average in the month of March, if we convert this data to energy is equivalent to 21,6 to 23,4 MJ/m2, which is of great advantage for the proyect.Key Words.- Solar energy, irradiance, photovoltaic system and electric power.

Manual de sistemas fotovoltaicos de geração distribuída: Teoria e prática

2021 ◽  
Author(s):  
Giuliano Arns Rampinelli ◽  
Solange Machado
Keyword(s):  
Solar Energy ◽  
Graduate Program ◽  
Technological Development ◽  
Electric Energy ◽  
Scientific Research ◽  
National Council ◽  
Santa Catarina ◽  
Research And Innovation ◽  
The People ◽  
Photovoltaic Solar Energy

This book started from a desire to contribute scientifically with the knowledge about photovoltaic solar energy – an art promoted and developed by members of School of Sun and the NTEEL Solar. It has been possible through the research groups from School of Sun Project and the Electric Energy Technological Nucleus – Solar (NTEEL Solar). The School of Sun is a project from Federal University of Santa Catarina (UFSC) which promotes scientific knowledge by the promotion of the information. The NTEEL Solar is a group which develops projects and scientific research in Photovoltaic Solar Energy and its applications. This work presents topics about the Brazilian electrical sector and its commercialization of energy, concepts about the reasoning and measurement of the solar radiation, characteristics and technologies of photovoltaic cells and modules; characteristics and technologies of inverters; monitoring and analysis of the photovoltaic systems; consumptions and generation profiles, rules and law, operation and maintenance of systems, softwares to dimension and simulate systems, and energy efficiency at buildings. It is a pleasure to share these research results from projects and scientific researches with you, dear reader. We would like to thank all the people that have been helping us with research so far, especially with this book. We are also thankful for the organizations which have been supporting us: the Federal University of Santa Catarina (UFSC), the School of Sun (UFSC), the Electric Energy Technological Nucleus – NTEEL Solar, Graduate Program in Energy and Sustainability (PPGES), the Undergraduate Program in Energy Engineering, the Coordination of Personnel Improvement of Graduate and Undergraduate Studies (CAPES), The National Council of Scientific and Technological Development (CNPq) and the Foundation of Support to Scientific Research and Innovation from Santa Catarina State (FAPESC). This book contributes scientifically to the promotion of renewable technology, reliable, competitive; towards sustainable development. We hope that you appreciate it and have a great reading.

Thermal/electric energy generation and CO2 production for greenhouse facilities

2019 ◽  
Vol 2 (3) ◽  
pp. 141-151
Author(s):  
O. E. Gnezdova ◽  
E. S. Chugunkova
Keyword(s):  
Carbon Dioxide ◽  
Power Distribution ◽  
Power Plants ◽  
Electric Energy ◽  
Electricity Consumption ◽  
Vegetable Crops ◽  
Carbon Dioxide Injection ◽  
Electricity Rates ◽  
Traditional Patterns ◽  
Generation Power

Introduction: greenhouses need microclimate control systems to grow agricultural crops. The method of carbon dioxide injection, which is currently used by agricultural companies, causes particular problems. Co-generation power plants may boost the greenhouse efficiency, as they are capable of producing electric energy, heat and cold, as well as carbon dioxide designated for greenhouse plants.Methods: the co-authors provide their estimates of the future gas/electricity rates growth in the short term; they have made a breakdown of the costs of greenhouse products, and they have also compiled the diagrams describing electricity consumption in case of traditional and non-traditional patterns of power supply; they also provide a power distribution pattern typical for greenhouse businesses, as well as the structure and the principle of operation of a co-generation unit used by a greenhouse facility.Results and discussion: the co-authors highlight the strengths of co-generation units used by greenhouse facilities. They have also identified the biological features of carbon dioxide generation and consumption, and they have listed the consequences of using carbon dioxide to enrich vegetable crops.Conclusion: the co-authors have formulated the expediency of using co-generation power plants as part of power generation facilities that serve greenhouses.

Modernization of Water Treatment System at Agricultural Enterprises Due to Introduction of Solar Energy

2020 ◽  
Vol 67 (1) ◽  
pp. 142-147
Author(s):  
Alina A. Aleksandrova ◽  
Maksim S. Zhuzhin ◽  
Yuliya M. Dulepova
Keyword(s):  
Mathematical Model ◽  
Water Treatment ◽  
Solar Energy ◽  
Energy Saving ◽  
Electric Energy ◽  
Solar Water Heater ◽  
Water Heater ◽  
Agricultural Enterprises ◽  
Solar Water ◽  
The Cost

Energy saving today is an integral part of the development strategy of agricultural organizations. Considerable attention is paid to the modernization and automation of technological processes in agricultural enterprises, which can improve the quality of work and reduce the cost of production. The direction of modernization is to reduce the consumption of electric energy by improving the water treatment system in livestock complexes. (Research purpose) The research purpose is to determine the potential of solar energy used in the Nizhny Novgorod region and to determine the possibility of its use for water heating in livestock complexes and to consider the cost-effectiveness of using a device to heat water through solar energy. (Materials and methods) Authors used an improved algorithm of Pixer and Laszlo, applied in the NASA project «Surface meteorology and Energy», which allows to calculate the optimal angle of inclination of the device for heating water. (Results and discussion) Designed a mock-up of a livestock complex with a solar water heater installed on the roof, protected by patent for invention No. 2672656. A mathematical model was designed experimentally to predict the results of the plant operation in non-described modes. (Conclusions) The article reveales the optimal capacity of the circulation pump. Authors have created a mathematical model of the device that allows to predict the water heating in a certain period of time. The article presents the calculations on the energy and economic efficiency of using a solar water heater. An electric energy saving of about 30 percent, in the economic equivalent of 35 percent.

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