36 results on '"Sharma, Pushpendra Kumar"'
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2. Cow-urine emulsified diesel fuel: preparation, stability, and rheological study for diesel engine application
- Author
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Jhalani, Amit, Sharma, Sumit, Singh, Digambar, and Sharma, Pushpendra Kumar
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- 2024
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- View/download PDF
3. Characterization of homogenous acid catalyzed biodiesel production from palm oil: experimental investigation and numerical simulation
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Singh, Digambar, Sharma, Dilip, Sharma, Pushpendra Kumar, Jhalani, Amit, and Sharma, Dinesh Kumar
- Published
- 2023
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4. Feasibility assessment of a newly prepared cow-urine emulsified diesel fuel for CI engine application
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Jhalani, Amit, Sharma, Dilip, Soni, Shyamlal, Sharma, Pushpendra Kumar, and Singh, Digambar
- Published
- 2021
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5. A Comprehensive Review on 1st-Generation Biodiesel Feedstock Palm Oil: Production, Engine Performance, and Exhaust Emissions
- Author
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Singh, Digambar, Sharma, Dilip, Soni, S. L., Inda, Chandrapal Singh, Sharma, Sumit, Sharma, Pushpendra Kumar, and Jhalani, Amit
- Published
- 2021
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6. Characterization of the hydroxy fueled compression ignition engine under dual fuel mode: Experimental and numerical simulation
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Sharma, Pushpendra Kumar, Sharma, Dilip, Soni, Shyam Lal, Jhalani, Amit, Singh, Digambar, and Sharma, Sumit
- Published
- 2020
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7. Present servicability rating (PSR) of major roads in Chandigarh, India: A case study.
- Author
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Singh, Vishaldeep and Sharma, Pushpendra Kumar
- Subjects
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PAVEMENTS , *AUTOMOBILE wheels , *SKID resistance , *TRAFFIC fatalities , *SURFACE roughness , *ROADS - Abstract
The roads are the dominant mode of transportation in India today. India has dubious distinction of nation with about 8-10% towards road death which is nearly one lakh every year. Pavement surface quality is a primefactor which enhances the serviceability of a road. Pavement surface quality is spoken in unevenness and assessed in terms of the automobile wheels movements and suspension arrangement along with the drivers' understanding of speed and acceleration. Though, notwithstanding the rapid high-tech advancement of high-speed roughness checking apparatus, it should not be ignored that highway pavements are constructed for the drivers, who have ever been keenly aware of the relative degrees of ease or distress felt in traveling. Mostly, travellers believe in three basic things from the pavement surface; even trip, sufficient resistance to slipping, and enough power to shift the traffic to the following section of the highway configuration. Hence their insight on road surface quality should also be considered. In this case study an attempt has been made to maintain the roads by monitoring the roughness of road surface whether they exist in good, average or poor condition at specific reach of Chandigarh city in India. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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8. Economical societal approach to sustainability for domestic sector in mitigating electricity consumption.
- Author
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Dhir, Amit Kumar and Sharma, Pushpendra Kumar
- Subjects
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ELECTRIC power consumption , *BAND gaps , *ENERGY dissipation , *HEAT losses , *GOVERNMENT policy , *COOLING loads (Mechanical engineering) - Abstract
The unmatched construction increase happened in last decade and the domestic construction from late 80s can be labelled as inefficient energy units. Building sector consumes energy more than 54 % and residential sector around 24 % in north region. The rising cost of per unit energy is huge concern especially the cooling loads. The inefficient houses are raising the peak demand becomes a challenge to meet the demand versus generation. This issue must be addressed at micro level. The major energy loss happened through windows (being the crucial component of building services) and more heat inside the building than other components such as wall, roof etc. This paper investigates the possible reasons and gaps that why residential sector is not susceptible towards sustainable windows to lower their electricity bills. The research carried in two phases and questionnaire is framed to gather the data for analysis with aid of experts and literature reviews. It is concluded that awareness of occupant plays a pivotal role in advancement of sustainable windows besides other crucial factors such as orientation, make, glazing type etc. The collective efforts of architect, engineer, vendors and occupant can bridge the gap to reduce energy consumption. The initial cost of sustainable windows can be offset with savings and aid of government policies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
9. Overall construction safety and terror management.
- Author
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Kanwar, Shubham and Sharma, Pushpendra Kumar
- Subjects
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CONSTRUCTION project management , *ALARMS , *BUILDING sites , *LINEAR equations , *CONSTRUCTION industry , *HEALTH facilities - Abstract
Generally new constructions go on remote areas to develop where there are no means of transport, medical facilities, first aids, security by the contractors in sufficient numbers and a huge number of helpless, low paid laborers reside there on spot of construction. So these construction sites are very much vulnerable to the terrorists‟ attacks. Recently number of terrorists‟ attacks on constructions in progress and existing both drew the researchers and designers attention. In this research 18 Indian construction organizations were surveyed and it was investigated that most of the companies were performing well in overall safety measures needing little improvement to reach to the excellence but in terrorism management before, during or after completion of the project leaving a few construction companies rest were lagging behind as revealed by considerable R2 value (0.754) with trending linear equation of which positive vertical intercept (0.6931) showing only first three companies taking care and negative slope (-0.0462) of line shows terror management failing in most of the companies surveyed. This research will not only enrich the construction project management domain but will be an alarm to governments and for safety of constructions before, during or after completion of projects also. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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10. Statistical analysis of quality learning and career over aftermaths MOOCS and done with face to face (F2F) classes.
- Author
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Pandit, Snigdha and Sharma, Pushpendra Kumar
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MASSIVE open online courses , *VIRTUAL classrooms , *COVID-19 pandemic , *ONLINE education , *CLASSROOMS - Abstract
During COVID-19 pandemic from 2019 onwards emergent demand of online classes has become worldwide prevalent. In the present era of pandemics along with advanced information and communication technology (ICT), institutions have shifted their pedagogy and are providing effective class room learning using web. Students are also joyful getting rid of class room constraints like modality, rigidity and inconveniency. The main objective of this research was to determine quality learning and students career growth as educational outcome via massive open online courses (MOOCS) as compared to that of traditional classes going physically offline and face to face (F2F). A total of 92 students of UG and PG level from different Indian universities and 8 countries including India were interviewed through questionnaire shared to achieve the objective. No significant difference was observed. In many research questions MOOCS were better proved than F2F. This paper will enrich the domain of distance learning, management and promote online learning using ICT. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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11. Analytical cost-effective solutions to self-sufficient structures using locally available materials in rural northeast of India.
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Pamnani, Anurag and Sharma, Pushpendra Kumar
- Subjects
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ANALYTICAL solutions , *SOLAR panels , *CIVIL engineering , *CIVIL engineers , *SELF-reliant living - Abstract
It is very common part of discussion that normal structures lag behind in terms of energy saving and its corresponding impacts on environment. This drives research to show implementation of common solutions and concepts that can be easily applied by majority of individuals to fulfill sustainable and self-sufficient goals to lead to a better habitat to live in. The aim of paper is to explore proper application of most common and most essential cost-effective design solutions to make structure following a step towards self-sufficient in itself. The paper has emphasized on quantitative and mathematical approach of study generating owns secondary data, from various research papers that are based upon similar background aspects. The value analyzed for solar panel tilt should range from 20o-30o for maximum efficiency, similarly distance between panels should be 1m-1.6m and horizontal shading device and vertical shading device should have at least depth of 450mm and 700mm respectively. The study is limited to a particular climate and region. i.e., Northeast region of India and focuses only upon most critical parameters. This paper will provide new directions for self-sufficiency in structures, which will further add values to the domain of architecture and civil engineering. Further, new areas of research can be application of new design alternatives for self-sufficiency, with respect to several other climatic conditions and regions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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12. Monitoring ambient air quality of Aligarh city UP, India.
- Author
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Hussain, Saheb, Khursheed, Anwar, Ayub, Sohail, and Sharma, Pushpendra Kumar
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AIR quality monitoring ,AIR quality ,PARTICULATE matter - Abstract
An investigational study on the ambient air quality of Aligarh city at six different locations designated as; Sir Syed Nagar, Jamalpur, Dodhpur, Center Point, Numaish Ground, Chungi was performed. Six primary and important locations of Aligarh city were chosen to monitor the quantities of key pollutants like PM10 and PM2.5. The outside areas were susceptible to extraordinary RSPM levels because of prevalent town ambient air excellence of Aligarh city and also due to high road traffic circulation at Dodhpur, chauraha and centre point. The concentration of PM2.5 at Aligarh city atmosphere was observed from 3.5 µg/m³ to 15 µg/m³ and PM10 level of concentrations at all the designated locations varied from 75 - 250 µg/m³. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
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13. Performance Optimization and Numerical Analysis of Boiler at Husk Fuel Based Thermal Power Plant
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Mohan Ravindra, Saxena Nishant Vibhav, Shrivastava Ashish, Sharma Pushpendra Kumar, Choubey Abhishek, and Kumar Santosh
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Environmental sciences ,GE1-350 - Abstract
The increasing cost of fuel oil forced the industry to search for alternate fuels, and biomass. In general, rice husks were considered an appropriate substitute for producing energy. Because, the use of rice husk offered lot of benefits such as reduction in emission of sulfur and other pollutants connected with the use of other fossil fuel, cheaper than coal (approx. 36%), and carbon neutral. Hence, in this paper, water, Fuel and Steam generation data of husk-based Boiler has been measured, numerically analyzed and plotted graphically. The results revealed that husk based thermal power plant has huge potential. Further, it is supposed that exploiting the renewable energy potential and utilizing agricultural waste will be useful to the country’s energy portfolio while adding numerous environmental and social benefits (reducing CO2 emissions, improving air quality, and diminishing the unemployment rate).
- Published
- 2023
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14. Influence of substituting aggregates on the characteristics of high-strength concrete.
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Mahajan, Akshat and Sharma, Pushpendra Kumar
- Published
- 2024
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15. Fresh, Compressive and Direct-Tensile characterization of Engineered Cementitious Composite.
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Jaggi, Sahil and Sharma, Pushpendra Kumar
- Published
- 2024
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16. A comprehensive review on water-emulsified diesel fuel: chemistry, engine performance and exhaust emissions
- Author
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Jhalani, Amit, Sharma, Dilip, Soni, Shyam Lal, Sharma, Pushpendra Kumar, and Sharma, Sumit
- Published
- 2019
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17. Development and validation of immunoassay for whole cell detection of Brucella abortus and Brucella melitensis
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Hans, Richa, Yadav, Pranjal Kumar, Sharma, Pushpendra Kumar, Boopathi, Mannan, and Thavaselvam, Duraipandian
- Published
- 2020
- Full Text
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18. Need of geotechnical investigations in ensuring the success of solidification grouting conducted in head race tunnels found in naturally weak/broken quartzite rocks.
- Author
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Sawhney, Ranjeev and Sharma, Pushpendra Kumar
- Subjects
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QUARTZITE , *GROUTING , *TUNNELS , *SOLIDIFICATION , *STONE - Abstract
Confusions in different land conditions in normally delicate Quartzite rock regions represent various issues for architects and organizers to go through for development exercises particularly the development of Hydro Power Plants. This paper clarifies that how the complete geotechnical examination program attempted at the site guides in battling the topographical varieties and intricacies to guarantee the achievement of solidification grouting performed at Power Tunnels viz. Head Race Tunnels, Tail Race Tunnels. The information about the presence of discontinuities like flaws, deficiencies, gaps, number of weak zones, exceptionally changing topographical conditions with over trouble of thick vegetative cushion which presents danger to development exercises in delicate quartzite rock mass should be surveyed prior to undertaking the Consolidation Grouting activity. Solidification Grouting under high tension is normally led to make up for shortfalls in rocks and to combine the stone mass around the fringe of passages so the delicate stone mass around the passages should act as a solid construction and become impermeable. The porousness tests are then led to dissect and survey the productivity of combination grouting. This paper uncovers how the different geographical tests embraced at site not just assistance the designers and organizers in keeping up with noteworthy improvement in porousness esteems in delicate quartzite rock mass around the head race burrows yet additionally help in setting aside cash, labor and material. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
19. Necessity to adapt adaptive and green infrastructure.
- Author
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Pamnani, Anurag and Sharma, Pushpendra Kumar
- Subjects
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STANDARD of living , *SUSTAINABLE buildings , *LITERATURE reviews , *GREEN infrastructure , *CIVIL engineers , *BUDGET , *GREEN business - Abstract
The Adaptive, Green, Smart and Eco sensitive buildings are one of the most trending topics with prime focus on Eco sensitive approaches. Last few years were worse for us, as pandemic struck hard and made us to rethink on such topics and our living standards. The aim of paper is to highlight the importance and necessity of adaptive, green, smart and Eco sensitive built-in, as per today's context and scenario. In order to this, paper focuses quantitative approach of study from data analysis of various literature review papers to compare between conventional and green buildings on normal ground with basic factors. It has been analyzed with the data that green building can perform better with respect to conventional building in adverse scenarios with less negative impact on environment. This paper will open the door sustainability in broader context and will enrich the domain of civil engineering to great extent. New areas of research can be development of Eco-sensitive material within low-cost budgets, so that it can even be implemented in small scale projects, which will enhance the living standards further. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
20. Economic computation and simulation for different window formations in reducing energy consumption in building sector.
- Author
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Dhir, Amit Kumar and Sharma, Pushpendra Kumar
- Subjects
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ENERGY consumption of buildings , *ENERGY consumption , *WINDOWS , *ELECTROCHROMIC windows , *CONSTRUCTION management , *PAYBACK periods , *COOLING loads (Mechanical engineering) , *GLOBAL warming - Abstract
Energy consumption has become the challenge especially in developing countries such as India and China. In recent times, increasing fears about the environmental impressions of energy consumption and global warming has exaggerated this concern. The building sector is consuming one-fourth of the share at state level power consumption in Punjab where the procurement of coal even becomes the challenge and thermal plants needs to be stopped leading to almost blackout in the state. This paper examines the energy saving conformations leading to reduction in energy management of the building. To achieve this, a residential building is modeled in Design builder software and simulation is carried with Energy Plus integrated tool. In this paper, simulation were carried out with variety of double glass formations with infill material such as argon and air in gap of 12 mm. Full year simulation was performed for the composite climate. Simulation results indicated the considerable reduction in solar gains by 28.28% and cooling load by 27.08%. Further, initial assessment was carried out by calculating approximately the cost of double glass unit and payback period for different window formations. It is recommended to use the double glass unit empanelled window formation which has the potential to reduce the electricity bill considerably. The initial cost is approximately 2.12 times more than traditional window which be offset by the savings over energy consumption. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
21. Variance in assessment and simulation for effect of double glass unit in built environment.
- Author
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Dhir, Amit Kumar and Sharma, Pushpendra Kumar
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BUILT environment , *HOME energy use , *COMPOSITE construction , *CURTAIN walls , *PAYBACK periods - Abstract
Due to number of parameters effect with varied variety in energy of the building, it is difficult to judge about the effect of different energy efficacy approaches without simulation implements. The study focus on the annual energy consumption of an residential building simulated in Design Builder software utilizing efficient double glazing window formation with respect to traditional window. The building is in composite climate and window to wall ratio kept is 50%. The authorization of simulation results through electricity records with simulation error in the range of 1.39% - 6.89 %. Two promising strategies are proposed to management for reduction in the energy consumption, first, replacement of traditional glass with low-e double glazed unit having argon gas and secondly by double glazed window formation having air as infill material. The simulations results showed the benefit reap out of these strategies are 36.1 % and 25.04% respectively. Further, economic assessment showed that the payback period for first and second strategy is 1.43 years and 1.73 years respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
22. A sustainable design of energy efficient and environment friendly residential building for tropical climate.
- Author
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Shukla, Bishnu Kant, Parashar, Bhupender, Bharti, Gaurav, Sharma, Pushpendra Kumar, and Kumar, Ashish
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CLEAN energy ,SUSTAINABLE design ,TROPICAL climate ,TROPICAL conditions ,SOLAR chimneys ,SOLAR power plants - Abstract
Requirement for sustainable development is constantly rising and civilization is at a point where population must learn to see beyond its animal instincts and desires. At this stage of civilization, man must learn that his actions may have a consequence which may prove to be beyond his control, non-sustainable engineering is being observed as an increasing threat. In the current paper, efforts have been done to design a house which is aimed to save energy and provide comfort for its residents. With the adoption of basic principles and laws that incorporate passive techniques of cooling and heating into building a home that shall stand firm against the changing course of nature in tropical region, against the scorching heat of summer as well as the fierce chill of winter and provide comfort within with a minimal use of energy. A latent or passive house has been planned, thinking about a tropical area, where summers as well as winters are outrageous. In summers, the working process includes air flow path, techniques of thermal insulation have been provided by providing solar chimneys, hollow area between outer and inner walls, hollow roof, specifically designed roof vents etc. and in winters ventilation with air exchange technique has been used. Large diameter underground pipes have also been provided for circulation of air within the buildings. Specific window, roof and mathematically designed overhangs have been provided in order to make house suitable for tropical climatic conditions. The study aims that such building shall not only serve their materialistic functions but also will insist in the minds of the billions of people a sense of responsibility towards sustainability. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
23. An experimental study on design mixes of pervious concrete for optimum compressive strength.
- Author
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Shukla, Bishnu Kant, Shenoy, Aparupa, Parashar, Bhupender, Kumar, Ashish, and Sharma, Pushpendra Kumar
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COMPRESSIVE strength ,EXPERIMENTAL design ,RATIO & proportion ,CONCRETE mixing ,LIGHTWEIGHT concrete ,CONCRETE - Abstract
The present work concentrates on different blend plans of the pervious concrete according to IS10262-2009 and IS456-2000 in order to accomplish blend plans of M20 concrete by changing water to ratio of cement proportion and various extent of fine totals. The analyses were completed using tierce water-cement proportion i.e 0.420, 0.460, and 0.500 and coarse to fine total aggregates were saved equivalent to 6.0:1.0, 5.5:1.5 and 5:2. The experimental work pointed toward accomplishing an extent which gives sufficient compressive strength as well as is adequately permeable to deplete water through the blend. Because of broad test works, it was reasoned that blend having water-cement proportion 0.460 with coarse total to fine total proportion of 5.5:1.5 was permeable enough as well as shown compressive forte equivalent to 20.287 MPa in 28 days. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
24. Performance and Emission Characteristics of a Compression Ignition Engine Operating on Blends of Castor Oil Biodiesel–Diesel
- Author
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Kanwar, Roopesh, Sharma, Pushpendra Kumar, Singh, Aditya Narayan, and Agrawal, Yadvendra Kumar
- Published
- 2017
- Full Text
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25. Biodegradation of quinalphos by gram negative bacteria Pantoea agglomerans and Acinetobacter sp. dcm5A.
- Author
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Mayanglambam, Thoibi, Sharma, Pushpendra Kumar, Singh, D. K., L., Arunkumar, M., Joychandra, Mishra, Anup Kumar, and Rawat, Rashmi Tyagi
- Abstract
Five bacterial strains for biodegradation study were initially isolated from quinalphos exposed soil from cotton field of Indian Agricultural Research Institute, India by Serial dilution and enrichment technique. Amongst them, two strains Pantoea agglomerans and Acinetobacter sp. dcm5A were exposed to different concentrations (50-250 ppm, parts per million) of quinalphos to evaluate their tolerance and the optimum concentration of quinalphos supported growth. Growth kinetics of the isolates was studied by means of optical density of the culture media (150 rpm, rotation per minute) at 30oC for 15 days. The optimal concentration of quinalphos for the growth of Pantoea agglomerans was 100 ppm, while for Acinetobacter sp. dcm5A was 200 ppm. Bacterial strains Pantoea agglomerans and Acinetobacter sp. dcm5A degraded quinalphos 60% and 79.7% respectively in 7 days incubation and 100% degradation by both strains was observed after 13 days of incubation. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
26. Impact of Fine Slag Aggregates on the Final Durability of Coal Bottom Ash to Produce Sustainable Concrete.
- Author
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Ganesan, Halan, Sachdeva, Abhishek, Petrounias, Petros, Lampropoulou, Paraskevi, Sharma, Pushpendra Kumar, and Kumar, Abhinav
- Abstract
In the current investigation is presented the prospective substitution of cement and fine aggregates with fine slag material (Alccofine 1203) and coal bottom ash, respectively. The investigation was carried out in two steps, viz. Phase I and Phase II. In Phase I, a control mix was designed with basic ingredients of concrete, and then fine aggregates were partially replaced with five percentages (10%, 20%, 30%, 40% and 50%) of coal bottom ash (CBA). To improve the characteristics of coal bottom ash concrete mixtures, ultra-fine slag material, i.e., Alccofine 1203 (an innovative ultra-fine slag material, low calcium silicate, which offers reduced water demand depending upon the concrete performance) was used as a partial replacement of cement. In Phase II, the inspected effect of replacing 5%, 10%, 15% and 20% cement with Alccofine, a concrete mix containing 40% coal bottom ash, on concrete properties such as workability, compressive strength, split tensile strength, flexural strength, pulse velocity, rapid chloride penetration along with a microstructural analysis using SEM was studied. It was concluded from cost analysis that the 15% replacement of cement with ultra-fine material Alccofine in 40% coal bottom ash concrete achieved the properties of high-strength concrete, with an 8.14% increase in cost compared to the control increase. The significance of this work lies in the fact that we achieved a high-strength concrete by using 40% industrial waste, i.e., coal bottom ash, as a partial replacement of fine aggregates in combination with the 15% Alccofine inclusion as a partial replacement of cement. About 58% improvement in compressive strength was recorded for 40% coal bottom ash and 15% Alccofine mix. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
27. Effects of process parameters on performance and emissions of a water-emulsified diesel-fueled compression ignition engine.
- Author
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Jhalani, Amit, Sharma, Dilip, Soni, Shyam Lal, and Sharma, Pushpendra Kumar
- Subjects
DIESEL motors ,HYDROPHILE-lipophile balance ,NITROGEN oxides emission control ,DIESEL fuels ,DIESEL motor exhaust gas ,WASTE gases ,THERMAL efficiency ,PARTICULATE matter - Abstract
Out of various strategies to extenuate the diesel engine emissions, use of water-blended diesel fuel in emulsified form is found to be a prominent option. The studies carried out by various researchers give quite inconsistent results for optimum water concentration, surfactant concentration, and HLB value. An effort has been made in this paper to analyze this inconsistency of water concentration and surfactant for engine emissions and performance along with the effect of compression ratio. The work has been carried out on a non-road, constant rpm, VCR (variable compression ratio) diesel engine. Different emulsions of 5%, 10%, 15%, and 20% water-in-diesel with 3% emulsifier concentration were tested on the diesel-optimized engine at CR 21. The results showed that emulsion of 15% water-in-diesel is optimal on the basis of emissions and performance. Further, the selected 15% emulsion is tested with 4% emulsifier concentration. It improved the stability of emulsion and performance of the engine with slight adverse effects on the NOx emissions. Then, emulsion with 4% surfactant and 15% water is tested to determine optimum compression ratio for emulsified fuels. CR 20 is found in optimum. Remarkably 9.28% improvement in BTE is observed reaching up to 23.89% as compared to 21.86% with bare diesel. 25.1% reduction in NOx and more than 50% reduction in smoke is observed. Overall, it is concluded that the water-blended diesel emulsion could serve as a fuel-efficient cleaner combustion technology and needs to be standardized. Abbreviations HLB: Hydrophile–Lipophile Balance; C
v : Calorific Value; W/D: Water in Diesel; PM: Particulate matter; RPM: Rotation per minute; HC: Hydrocarbon; CR: Compression Ratio; EGT: Exhaust Gas Temperature; BTE: Brake Thermal Efficiency; NOx : Oxides of Nitrogen; BSFC: Brake specific fuel consumption [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
28. Double Steps Processing of Various Food Samples under Different Temperature Conditions for the Estimation of Uncertainty and the Stability of the Pesticides in Multiresidue Analysis Followed Gas Chromatography with Electron Capture Detection.
- Author
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SUMAN, POOJA, SHARMA, PUSHPENDRA KUMAR, and SINGH, DILEEP K.
- Subjects
TEMPERATURE ,PESTICIDES ,GAS chromatography ,MATRIX effect ,DRY ice - Abstract
The concept of sampling constant was applied for the estimation of uncertainty in sample processing, carried out through double steps in two different processing equipments. The efficiency of both the sample processing equipment was determined by chlorpyriphos as internal standard. Samples analyzed were orange, lettuce, and mango. These matrixes were spiked with the treating solution prepared by mixture of pesticides (10 mg each) and were processed through two sets of experiment. The first set of experiment involved processing of sample at ambient conditions and in the second experiment processing was carried out at lower temperature conditions using dry ice. The recovery of multiresidues from the matrixes was above 70%, but the captan recovered lowest around 55-68%. The total uncertainty was below 2% from both the experiments. Second step of processing increased the extraction efficiency and 5 g analytical portion recovered highest from both the experimental conditions. Orange and mango recovered efficiently at ambient conditions and lettuce recovered better at lower temperature conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
29. A review on production processes, performance and emissions analysis of hydrogen as a fuel in I.C. engines.
- Author
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Rajora, Monu, Sharma, Dilip, Singh, Digambar, Sharma, Sumit, Sharma, Pushpendra Kumar, Jhalani, Amit, and Mishra, Ipsit
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HYDROGEN as fuel ,HYDROGEN analysis ,MANUFACTURING processes ,INTERNAL combustion engines ,HYDROGEN production - Abstract
The energy demand increases continuously with rapid increase in the world's population. Continuous depletion of limited non conventional energy resources forces the move towards alternate energy solution. Hydrogen is the environment-friendly and most promising source to meet future energy demand. Non-toxic, non-metallic and high energy content make the hydrogen as a future generation fuel. The main sources of hydrogen production are hydro, biomass, nuclear, wind, geothermal, and solar. Hydrogen can be produced from different methods like thermal, biological, electrical, and photonic. This review article provides detailed information about the production processes of hydrogen, and performance and emissions analysis of hydrogen when it is used as a fuel in internal combustion engines. Brake thermal efficiency of the engine increases with the increase of hydrogen energy share at high and moderate loads. However, at low loads, the efficiency decreases. Carbon-based emissions (HC, CO and CO
2 ) under dual-fuel mode decreases substantially at all loads due to carbon content in the fuel. This review will help researchers to get the significant details of hydrogen production processes and its optimum utilisation in internal combustion engines. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
30. A review on emissions reduction techniques used in internal combustion engines.
- Author
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Singh, Digambar, Sharma, Dilip, Soni, S. L., Sharma, Sumit, Sharma, Pushpendra Kumar, and Jhalani, Amit
- Subjects
INTERNAL combustion engines ,SPARK ignition engines ,STANDARD of living ,COMBUSTION chambers ,POLLUTION monitoring ,STANDARDIZATION - Abstract
Continuous growing population and a rise in living standards are creating widespread use of vehicles. Motor vehicle emissions contribute significantly to air pollution and other adverse environmental and health effects. The primary contaminants from internal combustion (IC) engines are NOx, CO, CO
2 , unburnt hydrocarbons (HC), and PM. Their control strategies were considered seriously throughout the discussion. This analysis summarises emissions from both compression ignition (CI) and spark ignition (SI) engines with government-setting emission regulatory standards. This article also gives detailed insight into pollution monitoring methods and their control policy for both CI and SI engines. Emissions from SI engines are more harmful to human health, with more CO and HC emissions in comparison with CI engines. CO emissions are insignificant in CI engines due to lean-burn nature. High temperatures and significant oxygen supply in the combustion chamber make CI engines prone to NOx emissions. This analysis will help researchers to obtain comprehensive emission and their reduction methodologies information for IC engines. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
31. Experimental studies on combustion duration and ignition delay period for a newly synthesised gomutra emulsified diesel.
- Author
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Jhalani, Amit, Sharma, Dilip, Soni, Shyam Lal, Sharma, Pushpendra Kumar, and Singh, Digambar
- Subjects
COMBUSTION ,DIESEL motors ,EMULSIONS - Abstract
Aligning to water-in-diesel emulsion technology, a newer work has been proposed in this study by introducing gomutra-in-diesel emulsion (GMD emulsion) fuel for application in CI engine. Experimental investigations have been performed in this study for ignition delay and combustion duration to understand the underlying mechanisms of combustion with this fuel. The complete work has been performed over a variable compression ratio (VCR) stationary diesel engine. Emulsions of different gomutra-in-diesel (5%, 10%, 15% and 20%) concentrations were taken for the study. The ignition delay was found to be 24°, 27°, 29°, 32°, and 34° crank angle (CA) with diesel, 5%, 10%, 15%, and 20% water-in-diesel emulsions respectively. The effect of injection timing on the engine performance was also analysed. It was observed that the combustion duration got decreased by a maximum of 12 degrees CA with 20% GMD emulsion. It is estimated that after the optimisation of other engine parameters like injection pressure and compression ratio, the performance of the engine could further be improved. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
32. Multifarious Applications of Photoacoustic Spectrophotometer and Its Importance in Forensic Investigation.
- Author
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Singh, Aditya Narayan, Sharma, Pushpendra Kumar, and Agrawal, Y. K.
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PHOTOACOUSTIC spectrometers , *TECHNOLOGICAL innovations , *CRIME scene searches , *FORENSIC sciences , *COMMERCIALIZATION , *MARKETING research - Abstract
Abstract:Photoacoustic spectrophotometer (PAS) has emerged as the most promising technology with its promise to resolve unmet issues in various domains. The advantages of PAS are nonvulnerability of the sample, trace quantity sample analysis, and short response time. Though it showed distinguished features close to its emergence, it is bereft of its importance in the present scenario. Certainly, there exists a transparent gap in understanding the current situation in forensic crime scene management and the application of PAS within the same discipline. This article aims to consolidate all this information to fill an existing knowledge gap and tries to establish trajectory of research done up to now. This article will also pinpoint the reasons behind why this advanced technique could not accomplish its respectable feat inside the market and restraint of optical business toward inventing and commercializing this merchandise. [ABSTRACT FROM PUBLISHER]
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- 2014
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33. Isotherms describing physical adsorption of Cr(VI) from aqueous solution using various agricultural wastes as adsorbents.
- Author
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Sharma, Pushpendra Kumar, Ayub, Sohail, Tripathi, Chandra Nath, and Dubey, Shashi
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TEA , *PEAS , *GINGER , *BANANAS , *SORBENTS , *PHYSISORPTION , *AQUEOUS solutions , *AGRICULTURAL wastes - Abstract
Various agricultural wastes such as peels of pea (Pisum sativum) pod, tea (Camellia sinensis), and ginger (Zingiber officinale) and banana (Musa lacatan) waste were used to adsorb Cr(VI) from the aqueous solutions. A comparative adsorption efficiency study for all these adsorbents was done in laboratory for various pH, adsorbent doses, initial chromium concentrations, contact time, adsorbent sizes, temperature, and mixing speeds up to the optimization. The equilibrium sorption data were fitted into Langmuir, Freundlich, and Temkin isotherms and also the various thermodynamic parameters were determined. The value of R2 was determined for Freundlich, Langmuir, and Temkin as 0.964, 0.963, and 0.858 (pea pod peels waste (PPP)), 0.969, 0.986, and 0.841(tea & ginger waste (T&G)), 0.985, 0.982, and 0.886 (banana peel waste (BW)). The maximum monolayer coverage (Q0) from Langmuir isotherm model for pea pod, tea & ginger and banana peels waste were found to be 4.33 mg/g, 7.29 mg/g, and 10 mg/g, respectively, with separation factors (RL) 0.0331, 0.0343, and 0.0756 which are well within favorable sorption. From Freundlich isotherm model, the sorption intensity (n) for the same adsorbents was also less than unity showing normal sorption. The heat of sorption (B) was also determined from Temkin isotherm model as 0.215, 0.271, and 0.271, respectively, vividly proving a favorable physical sorption. The Gibbs free energy was found maximum for BW as 6.0679 joule/ mole. Out of the above said combination, BW was found the best low-cost adsorbent with high potential for the removal of hexavalent chromium from aqueous solutions. [ABSTRACT FROM AUTHOR]
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- 2016
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34. Impact assessment of acetylene fueling on the performance, emissions, and combustion of a spark-ignition engine.
- Author
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Sharma, Sumit, Sharma, Dilip, Singh, Digambar, and Sharma, Pushpendra Kumar
- Abstract
Along with industrialization and transportation, the higher living standard is also the main reason for the increase in energy demand. This increasing energy demand motivates researchers to find new alternative fuels that are eco-friendly and sustainable. In this concern, to analyze the performance, emissions, and combustion characteristics of an SI engine fueled by petrol-acetylene under DF mode is the main purpose of this study. For this purpose, a VCR spark ignition engine was used and operated at the engine maximum speed (1800 rpm). The experimental study was carried out at different acetylene gas flow rates and spark timing.In this study, the acetylene gas flow rate was first optimized on a performance basis. Furthermore, the engine was run at an optimized acetylene gas flow rate (100 LPH) to find out the optimum value of spark timing. In further experimentation, it is also found that the BThE to be maximum and emissions were significantly low or comparable at spark timing 20º CA bTDC (at 100 LPH) as compared to other spark timing and baseline case at all loads. The effects of NOx and smoke are not considerable. Hence, it is not covered in this study. The heat release rate and peak cylinder pressure are found to increase with the advancement of spark timing. But knocking was observed at higher spark advance. [ABSTRACT FROM AUTHOR]
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- 2021
- Full Text
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35. A comprehensive review of biodiesel production from waste cooking oil and its use as fuel in compression ignition engines: 3rd generation cleaner feedstock.
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Singh, Digambar, Sharma, Dilip, Soni, S.L., Inda, Chandrapal Singh, Sharma, Sumit, Sharma, Pushpendra Kumar, and Jhalani, Amit
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- *
DIESEL motors , *BIODIESEL fuels , *PETROLEUM as fuel , *ALTERNATIVE fuels , *WASTE management , *FREE fatty acids - Abstract
Latest research on fuels focused on exploring better alternatives for compression ignition engines. A large number of studies reported that the properties of biodiesel are comparable with traditional diesel fuel, which makes it a suitable alternative source of energy. Among various available feedstocks, waste cooking oil is considered as the most viable source for biodiesel production. Apart from being economical, it also reduces waste disposal issues. High free fatty acids and water content in waste cooking oil cause the production of biodiesel difficult. In order to overcome this difficulty, two-step transesterification method is preferred for commercial-scale biodiesel production. Several factors like catalyst concentration, alcohol to oil molar ratio, reaction temperature, and time of reaction affect the yield of biodiesel. This article provides a comprehensive review of biodiesel production from waste cooking oil and its use in compression ignition engines. In this review, fatty acid composition, pre-treatment process, catalytic and non-catalytic approaches of biodiesel production with their advantages and limitations are included. The effect of transesterification reaction parameters on biodiesel yield is also covered. The high viscosity of biodiesel than diesel fuel causes an increase in brake specific fuel consumption and a decrease in brake thermal efficiency of engines. Significant reduction in CO, HC, PM, and smoke emissions are identified; however, NO X and CO 2 emissions found increased due to the oxygenating nature of biodiesel. Overall, it could be concluded that biodiesel produced from waste cooking oil serves as a cleaner and economical alternative source of fuel for compression ignition engines. [Display omitted] • Approximately 30% of per capita edible oil consumption is generated as waste. • Two-step transesterification is the most efficient method for biodiesel production. • Yield of biodiesel is most influenced by the type of catalyst and its concentration. • Brake specific fuel consumption increases due to poor atomization of biodiesel. • CO, HC, PM, and smoke emissions from engine exhaust are reduced significantly. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
36. A comprehensive review of physicochemical properties, production process, performance and emissions characteristics of 2nd generation biodiesel feedstock: Jatropha curcas.
- Author
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Singh, Digambar, Sharma, Dilip, Soni, S.L., Inda, Chandrapal Singh, Sharma, Sumit, Sharma, Pushpendra Kumar, and Jhalani, Amit
- Subjects
- *
BIODIESEL fuels , *JATROPHA , *DIESEL motor exhaust gas , *DIESEL motors , *MANUFACTURING processes , *UNSATURATED fatty acids - Abstract
• Classification of biodiesel generations on the basis of the type of feedstocks is covered. • Botanical description and growth condition requirements of jatropha are discussed. • Physicochemical properties and fatty acid profile of jatropha biodiesel are analyzed. • Production of biodiesel from jatropha oil with different techniques is summarized. • Performance and emissions characteristics of C.I. engine fuelled with jatropha biodiesel are reviewed. Due to limited reserves of conventional fossil fuels and their negative impact on global climate and human health, researches are focused to find the alternate energy substitute. Comparable properties of biodiesel make it one of the most promising alternatives of conventional diesel fuel. Jatropha curcas oil (non-edible oil) belongs to the second-generation of biodiesel. In this review, the physicochemical properties, fatty acids distribution, stability of jatropha oil are discussed in detail. The change in fatty acid profile affects the fuel properties, performance and emissions of diesel engines operated on jatropha biodiesel. Oxidation stability of jatropha biodiesel is poor due to the high amount of unsaturated fatty acids. Blending, thermal cracking, micro-emulsification, and transesterification are four basic approaches for production of biodiesel. Transesterification is the most adoptive method due to less expensive operation and high product yield. This article also highlighted the performance and emissions of compression ignition engines operated on jatropha biodiesel and its blends. The lower calorific value of jatropha biodiesel is responsible for the decrease in brake thermal efficiency and an increase in brake specific fuel consumption. High availability of oxygen in jatropha biodiesel reduces HC, CO, and PM emissions, while NOx emission increases significantly. This article provides the most of details of optimum parameters for jatropha biodiesel production and its efficient use in diesel engines. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
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