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409 articles for “alternative energy”
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A New Approach to Analyze the Performance of Flat Plate Collector
Abstract: AbstractAs per standards, the thermal efficiency test for the flat plate collector is used to be conducted under specified steady state conditions and then incident angle modifier ‘Kτα’ has been used to calculate the thermal efficiency at a different angle of incidence. These standards do not consider the effect of solar azimuth angle, as well as time consumption and require the costly test setup. In this paper, a new approach …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 2, 2018 · pp. 39–49 Read article
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Analysis of Effect of Human Hair in Compressive and Split Tensile Strength of Concrete
Abstract: AbstractThis research paper presents the analysis of the effect of human hair in compressive and split tensile strength of concrete. In the recent time due to a significant increase in population increases large amount of human hairs. Human hairs are strong in tension and it also reduces greater impact, abrasions and shatter resistances in concrete and prevents many problems in this environment. Fiber reinforcement improves the impact strength and fatigue …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 2, 2018 · pp. 50–61 Read article
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Experimental Study on Corrosion of Steel in Coarse Aggregate Medium
Abstract: AbstractThere are many practical situations were steel exposed to coarse aggregate. Deterioration of steel in such case it depends upon the nature of coarse aggregate, especially the types and the concentration of ions present in the moisture within the coarse aggregate since coarse aggregate vary in nature it is necessary to understand the nature of corrosion of steel in each samples of coarse aggregate. This aspect was taken for the …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 2, 2018 · pp. 69–76 Read article
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Paper Production from Flower: Recycling of Flower Waste
Abstract: AbstractThis proposal provides an alternative approach for solid waste management. Solid waste is usually landfilled or incinerated, the volume of solid waste that can be recycled is found to be minimal. This approach will focus on reducing the solid floral waste. India is a country where religion and festivals are part of our lives; we usually worship by providing offerings mostly flowers, coconut, and fruits. Flowers are been widely used …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 2, 2018 · pp. 77–80 Read article
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Comparative Study of Performance and Emission of Gasoline and Gasoline-Ethanol Blends
Abstract: AbstractThis study is about analysing performance of gasoline and gasoline-ethanol blends in multi-fuel engine. Performance, combustion and emission characteristics of gasoline fuel and gasoline ethanol blended fuels have been analysed in detail under various load conditions, various ignition angle, different compression ratios and at different rpm. The study showed improvement in thermal efficiency at higher compression ratios compared to lower compression ratios as well as with ethanol blended fuel. There …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 9, Issue 3, 2018 · pp. 1–8 Read article
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Basic Multi-ampere Solar Mobile Charger
Abstract: AbstractAs we know that nowadays usage of smart phones is increasing. Major issue which we are facing is the battery backup of smart-phone is lower comparatively. Another issue we are facing is that the charging rate of battery varies from one company to another thus using charger of one company for another, which causes damage to battery life of smart-phone. In this paper, we have addressed both the problems of …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 1, 2019 · pp. 39–41 Read article
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Multilevel Inverter Based PV System with MPPT Application
Abstract: Abstract: An improved MPPT converter with voltage and current (perturb & observe) method for photo voltaic (PV) and 5-level H-bridge multilevel inverter is connected to solar panel, applications is presented in this study. The proposed method used to implement maximum power point tracking (MPPT) and convert DC power into AC power by variable reference of voltage and current which is continuously changed during some time (up to 5 sec). In …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 1, 2019 · pp. 42–52 Read article
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Small Grid Connected Solar Rooftop System Implementation is Economical in India: A Case Study
Abstract: This work presents the basic preplanning for installing a grid connected PV system on the rooftop of the Central Library at Integral University, Lucknow, India. The strategy undergoes as per economical facility and support provided by the state and central government. Also the technical feasibility is analysed with the help of solar industrial market. So, we present an effective market survey report and government facilities aiming the design of an …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 1, 2017 · pp. 23–25 Read article
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Emission Characteristics Investigation of Single Cylinder VCR Diesel Engine using Calophyllum inophyllum Biodiesel Blends as Fuel
Abstract: This work presents experimental investigation on a single cylinder vertical diesel engine with Calophyllum inophyllum (Undi) biodiesel blends. Experiments were conducted using pure diesel, 25, 50 and 75% blends by varying the compression ratio, and the exhaust emission characteristics obtained using a computerized exhaust gas analyzer are presented here. From the results obtained, it was concluded that the biodiesel blends had equivalent emission characteristics with no modifications in the VCR …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 1, 2016 · pp. 1–7 Read article
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Drying and Particle Size Characteristics of Danta (Nesogordonia papavereria) and Hard Cross (Vitex doniana) Wood Sawdusts at Different Temperatures
Abstract: The drying and particle size characterization of Danta (Nesogordonia papavereria) and Hard Cross (Vitex doniana) hardwood sawdusts were investigated at temperatures 80 ºC, 90 ºC and 105 . The experimental drying data were modeled using eighteen existing drying models. The results showed that the modified Henderson and Pabis model offered the best fit to the drying curves of Danta and Hard Cross sawdusts. The experimental data obtained from the particle …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 1, 2016 · pp. 30–38 Read article
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Effect of Climate Change on Water Resources
Abstract: Observational records and climate projections provided enough evidence for the effect of climate change on global water resources and its consequences for human societies and ecosystems. It is a big environmental challenge to environmentalist for planning a long term water resources system and its management. Extensive studies are required to establish a relation among hydrology, water resources, planning management, operation management, environmental protection and ecological balance due to climate change. …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 1, 2016 · pp. 44–48 Read article
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Heat Transfer in Single Effect Solar Assisted LiBr-H2O Absorption Refrigeration Cycle
Abstract: This paper describes the heat transfer model of LiBr-H2O vapour absorption cooling system implemented in engineering equation solver (EES). The detailed first law analysis of the system is presented. Effects of operating temperature and pressure on the heat load in various components, coefficient of performance (COP), and circulation ratio of the system have been carried out. Impact of solution heat exchanger effectiveness on system performance is also studied. The study …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 2, 2016 · pp. 1–11 Read article
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Modeling the Variation in Specific Heat of Phase Change Materials during Phase Transition
Abstract: Specific heat of phase change materials varies significantly during phase transition. Accurate knowledge of variation in specific heat is vital for proper numerical simulation of heat transfer in such materials. Specific heat of phase change material (PCM) during phase transition has been modeled as delta, triangular and Gaussian function by researchers. In the present work, variation of specific heat is presented in the form of Fourier series. Fourier coefficients are …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 2, 2016 · pp. 28–33 Read article
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Preparation of Biodiesel from Karanja Oil using Homogeneous and Heterogeneous Catalyst
Abstract: In India, diesel consumption is increasing at an alarming rate which is increasing the import bill and the problems related to environment pollution. Biodiesel (BD) from non-edible oil like karanja is attractive feed stock for diesel engine. Due to high acid value of karanja oil (KO), a two-step process is necessary for BD production using homogeneous catalyst. In present study, BD was produced from KO by transesterification process using homogeneous …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 3, 2016 · pp. 23–37 Read article
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Investigating the Effect of Spectral Variations on the Performance of Monocrystalline, Polycrystalline and Amorphous Silicon Solar Cells
Abstract: The study of spectral variations is very important in the characterization of silicon solar cells. The spectral variations of monocrystalline, polycrystalline and amorphous solar cells is studied through the spectral response with the help of spectral response evaluation meter, CEP-25HS-50SR. PVsyst 6.4.3 software is used to study the variation of air mass throughout the day and the year and to understand that how solar irradiance varies with the changing air …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 7, Issue 3, 2016 · pp. 28–36 Read article
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Effects of Oil Extraction Methods on Bio-diesel Production from Wild Grape Seeds: A Case Study of Soxhlet Extraction and Mechanical Press Engine Driven Expeller Methods
Abstract: In this research, two samples of wild grape seeds (Lannea Microcarpa) were used to produce biodiesel. The first sample was washed; dried and powdered, oil was extracted from the sample using soxhlet extraction method with n-hexane as solvent. The second sample was washed and dried, oil was extracted from the sample using mechanical press engine driven expeller. The oil yield from the first method was 33.3% while the oil yield …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 1, 2015 · pp. 35–40 Read article
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Performance Evaluation of Petrol-Ethanol Blends and Testing on Multicylinder 4-Stroke SI Engine
Abstract: The usage of different alcohols as a fuel for spark ignition (SI) engines has been in progress since the invention of engine, with ethanol being renewable, bio-based and ecofriendly is the best replacement for petrol as fuel in SI engines. Ethanol is derived basically from sugarcane, cassava, corn and other waste biomass materials. The choice of ethanol as a fuel is due to the positive influence on engine performance due …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 1, 2015 · pp. 41–45 Read article
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Parametric Study of Parabolic Trough Solar Collector System: A Review
Abstract: The detailed thermal analysis of a parabolic trough collector (PTC) was carried out to predict the thermal performance. The analysis is based on the established theory of PTC—the radiation absorption, heat loss from the collector, and temperature distribution on the plate. An analytical program, suitable for use on a digital computer is developed for the purpose of studying the hourly behavior of a solar collector. The exergy output is optimized …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 1, 2015 · pp. 46–50 Read article
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Parametric Study of a Solar Heat Driven Silica Gel–Water Paired Adsorption Chiller
Abstract: Heat driven sorption based cooling systems are gaining interest as they are environmentally friendly and have the potential to save precious fossil fuel resources. Low grade thermal sources like solar or waste heat can run a silica gel-water paired adsorption chiller to generate chilled water below 10°C. However, the performance of the adsorption chillers is poor when compared to vapour absorption or vapour compression based cooling systems. An effort has …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 2, 2015 · pp. 19–29 Read article
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A Brief Study of an Installation of a Rooftop Solar PV System in India
Abstract: AbstractSolar rooftop photovoltaic installation is one of the most popular setups used in the country of India, being economical and apt for the space available in the country. This paper focuses on the key aspects of the design involved in the setup of the system, regarding not just the engineering design for a PV system, but also other key components such as installation site evaluation of a given rooftop to …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 10, Issue 3, 2019 · pp. 1–7 Read article