Wyniki wyszukiwania - BazTech

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Exploring acceptance on benefit of solar farm implementation in Malaysia

Mohammad Shahrul Nizam, Mohamed Yusof Mohamed Khatif Tawaf, Mohd Puaad Muhammad Bazli Faliq, Zakaria Rozana, Baki Amin

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska

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2023

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Vol. 32, No. 1

87--98

EN

Exploring acceptance on benefits of solar farm implementation in Malaysia. Implementation of solar farms to generate electricity is still low in Malaysia, where only 1%, or 227.5 MW of the total installed electrical capacity in Malaysia was produced from solar PV installations in 2016. Renewable energies, e.g. solar energy, have been adopted in many countries to generate electricity as a response to global environment issues. The aim of this study is to determine financial opportunities and benefits of solar farm implementation towards the society and the environment. Data were acquired through a literature review and questionnaire survey that was conducted among the respondents that are directly involved in the solar energy. Long-term financial savings constitute the most identified financial opportunities for the implementation of solar farms in generating clean electricity. Implementation of solar farms will encourage more businesses related to solar energy to be established in the country and will lead to new business opportunities. Solar farms are far better than conventional fossil fuel power plants in terms of the environmental effect and also reduce the health effects on the society during the electric generating process.

2

PV panel cooling using stack effect

Rao Kudithi Nageswara, Ganesamoorthy Rajkumar

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska

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2023

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T. 13, nr 3

83--85

EN

Unsatisfactory feat of the photo-voltaic cell is solitary in every of the foremost issues among the promotion of PV technology. A vital strand changing cell performance is operative temperature of the cell. The voltage of the cell, declines near directly with a rise in the operative temperature of the photo-voltaic cell. The temperature condition on the in-operative surface of a photo-voltaic panel remains usually 22–30°C beyond the normal temperature conditions. Upon the premise concerning those issues, the potency of the photo-voltaic cell will be refined by sustaining their operative temperatures as low as possible. This paper portrays a technique of PV/solar panel cooling using convection generated by the chimney effect. This paper considers the diminution of warmth from the Photo-voltaic panel for both active and inactive conditions.

PL

Niezadowalająca wydajność ogniwa fotowoltaicznego jest jednym z najważniejszych problemów związanych z promocją technologii PV. Istotnym czynnikiem wpływającym na wydajność ogniwa jest jego temperatura robocza. Napięcie ogniwa spada niemal bezpośrednio wraz ze wzrostem temperatury roboczej ogniwa fotowoltaicznego. Temperatura na powierzchni działającego panelu fotowoltaicznego pozostaje zwykle o 22–30°C wyższa od normalnych warunków temperaturowych. Zgodnie z założeniami dotyczącymi tych kwestii, moc ogniwa fotowoltaicznego zostanie poprawiona poprzez utrzymanie ich temperatury roboczej na jak najniższym poziomie. Niniejszy artykuł przedstawia technikę chłodzenia paneli fotowoltaicznych/solarnych z wykorzystaniem konwekcji generowanej przez efekt kominowy. W artykule uwzględniono zmniejszenie ciepła z panelu fotowoltaicznego zarówno w warunkach aktywnych, jak i nieaktywnych.

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Maximum power point tracking techniques for low-cost solar photovoltaic applications – Part I: constant parameters and trial-and-error

Sutikno Tole, Subrata Arsyad Cahya, Pau Giovanni, Jusoh Awang, Ishaque Kashif

Archives of Electrical Engineering

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2023

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Vol. 72, nr 1

125--145

EN

The development of research on the maximum power point tracking (MPPT) controller has increased significantly in this decade. The MPPT technique, however, is still demanding because of the ease and simplicity of implementing tracking technique on the maximum power point (MPP). In this paper, MPPT techniques and their modifications from various literature are classified and examined in detail. The discussions are focused on the main objective of obtaining the best possible MPPT technique with the best results at a low cost. The assessment for the selection of MPPT techniques is based on assessments from the previous literature. The discussion of the MPPT technique assessment is divided into two parts. In Part I, the MPPT technique based on constant parameters, and trial-and-error will be discussed in detail, along with its algorithm development in recent times.

4

Maximum power point tracking techniques for low-cost solar photovoltaic applications – Part II: Mathematical Calculation and Measurement and Comparison, criteria on choices and suitable MPPT techniques

Sutikno Tole, Subrata Arsyad Cahya, Pau Giovanni, Jusoh Awang, Ishaque Kashif

Archives of Electrical Engineering

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2023

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Vol. 72, nr 2

299--322

EN

In the last decade, there has been a substantial surge in the advancement of research into the maximum power point tracking (MPPT) controller. The MPPT approaches, on the other hand, continue to be in high demand due to the ease and simplicity with which tracking techniques can be implemented on the maximum power point (MPP). Diverse MPPT approaches and their modifications from various literature are categorized and thoroughly explored in this work, which is divided into two sections. The discussions are centered on the primary goal of attaining the most extraordinary feasible MPPT technique that produces the best results at the lowest possible expense. In order to determine which MPPT approaches to use, evaluations from earlier literature are used to guide the decision. In this section, we will examine the evaluation of the MPPT technique in two sections. Previously, in Part I, we explored the MPPT techniques based on constant parameters and trial-and- error. Part II of this article will examine the MPPT technique, which is based on mathematical computation, measurement, and comparison, and the algorithm development that has occurred in recent years. Furthermore, this section’s assessment for selecting MPPT approaches is based on previous literature reviews. To aid with this selection, the following criteria for the MPPT approach are proposed: sensors and analog/digital requirements, costeffectiveness, simplicity, stability, efficiency, and tracking speed. This enables the reader to select the MPPT technique that is most appropriate for their application.

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Electricity supply to irrigation systems for crops away from urban areas

Skibko Zbigniew, Romaniuk Wacław, Borusiewicz Andrzej, Derehajło Stanisław

Journal of Water and Land Development

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2022

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no. 53

73--79

EN

Water scarcity is a phenomenon that is occurring more and more frequently in larger areas of Europe. As a result of drought, there are significant drops in yields. As demand for food continues to rise, it is becoming necessary to bring about a substantial increase in crop production. The best solution to water scarcity appears to be irrigation for crops that are particularly sensitive to drought. Today, many technical solutions are used to supply and distribute water to crops. The optimal solution is drip irrigation, which makes it possible to deliver water directly to the plant root system to save melting freshwater resources. In the article special attention was paid to methods of supplying electricity to power irrigation pumps. The analysis was made for areas with a significant distance between the agricultural land and the urbanised area (which has water and electricity). The authors have selected the parameters of an off-grid photovoltaic mini-hydropower plant with energy storage (with a power of 1.36 kW). An analysis was made of the profitability of such an investment and a comparison with other types of power supply. Based on the performed calculations, a prototype power supply system equipped with photovoltaic panels was made to show the real performance of the proposed system. The tests carried out showed that the irrigation pump will be powered most of the time with a voltage whose parameters will be very close to the nominal ones.

6

Solar energised transport solution and customer preferences and opinions about alternative fuel vehicles - the case of Slovenia

Knez M., Sternad M.

Transport Problems

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2015

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T. 10, z. 3

17--28

EN

Authorities in Slovenia and other EU member states are confronted with problems of city transportation. Fossil-fuel based transport poses two chief problems – local and global pollution, and dwindling supplies and ever increasing costs. An elegant solution is to gradually replace the present automobile fleet with low emission vehicles. This article first explores the economics and practical viability of the provision of solar electricity for the charging of electric vehicles by installation of economical available PV modules and secondly the customer preferences and opinions about alternative low emission vehicles. Present estimates indicate that for the prevailing solar climate of Celje – a medium-sized Slovenian town – the cost would be only 2.11€ cents/kWh of generated solar electricity. Other results have also revealed that the most relevant factor for purchasing low emission vehicle is total vehicle price.

RU

Власти Словении и других стран-членов ЕС сталкиваются с проблемами городского транспорта. Транспорт работающий на основе ископаемых видов топлива представляет две главные проблемы - локальное и глобальное загрязнение, сокращающиеся поставки и постоянно растущие расходы. Хорошим решением является постепенная замена существующего автомобильного парка на транспортные средства с низким уровнем выбросов. Эта статья впервые исследует экономику и практическую жизнеспособность использования солнечной электроэнергии для зарядки электрических транспортных средств путем установки экономичных доступных PV модулей и, во-вторых, предпочтений заказчиков и мнений об альтернативных транспортных средствах с низким уровнем выбросов. Современные оценки показывают, что для имеющего в основном солнечный климат, Целье - среднего размера города Словении - цена будет только 2.11 евроцентов / кВт-ч выработанной солнечной электроэнергии. Другие результаты также показали, что наиболее важным фактором при покупке транспортного средства со сниженным уровнем вредных выбросов является его полная стоимость.