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7篇 您的检索式:作者名="A.K.Pandey"
    题名 作者 年代 出处 被引量
1Advancements in the Development of Various Types of Dye-Sensitized Solar Cells:A Comparative Review显示文摘The global increase in energy demand has resulted in the depletion of non-renewable resources and caused environmental degradation.Consequently,emerging renewable technologies are a potential solution to fulfil energy demand and mitigate the effect of global warming.Low-cost solar energy harvesting technologies are most feasible technologies.Various solar cells technologies have been developed with improved overall performance and conversion effi-ciency.However,due to low cost and a wide range of applications,dye-sensitized solar cells(DSSCs)have been immensely focused on one of the most promising third-generation solar cells.The highest conversion efficiency of DSSC achieved after three decades of research is more than 14%,but the commercialization of this technology is still a challenge.In this review paper,an attempt has been made to present the comparison of different articles published,that gives the in-depth study of recent developments in various types of DSSCs based on architectural assembly and physical appearance.An overview of the limitations and challenges with their possible improvement strategies have also been discussed.This review paper concludes that appropriate selection of electrolytes dramatically affects the performance of DSSC,and quasi-solid-state electrolyte proves to be a better option.Besides,it also concludes that tandem structures are widely agreed with the approach to expand light utilization spectrum for an overall increase in its performance.However,still,the research is required,which could efficiently widen the applications of the DSSCs.Sandhia Bai A.K.Amirruddin A.K.Pandey M.Samykano Muhammad Shakeel Ahmad Kamal Sharma V.V.Tyagi 2021Energy Engineering2021,118,4:0
2An Updated Review on Low-Temperature Nanocomposites with a Special Focus on Thermal Management in Buildings显示文摘Buildings contribute to 33%of total global energy consumption,which corresponds to 38%of greenhouse gas emissions.Enhancing building’s energy efficiency remains predominant in mitigating global warming.Advance-ments in thermal energy storage(TES)techniques using phase change material(PCM)have gained much attention among researchers,primarily to minimize energy consumption and to promote the use of renewable energy sources.PCM technology stays as the most promising technology for developing high-performance and energy-efficient buildings.The major drawback of PCM is its poor thermal conductivity which limits its potential use which could be resolved by dispersing conductive nanofillers.The acquired database on synthesis routes,properties,and performance of nano-dispersed phase change materials(NDPCMs)with various techniques presented in the paper should deliver useful information in the production of NDPCMs with desirable characteristics mainly for building construction applications.An outline of contemporary developments and use of NDPCMs as TES medium is delivered.Finally,a brief discussion on challenges and the outlook was also made.In-depth research is needed to explore the fundamental mechanisms behind the enhanced thermal conductivity of NDPCM with nanofillers dispersion and also a thorough investigation on how these mechanisms drive improvement in building performance.John Paul K.Kadirgama M.Samykano R.Saidur A.K.Pandey R.V.Mohan 2022Energy Engineering2022,119,4:0
3阻燃防渗透的胶布显示文摘橡胶的一个主要缺点是其具有可燃性。所以在电缆护套、输送带、防护涂料及矿用导风筒等应用场合,橡胶制品的可燃性仍就是人们非常关心的问题。橡胶行业对这一问题的研究已远落后于塑料行业。橡胶的燃烧能力一般强于木材和天然纤维。D.K.Setua A.K.Pandey 王进文 2000橡胶参考资料2000,30,1:0
4Preparation,characterization and thermophysical properties investigation of A70/polyaniline nanocomposite phase change material for medium temperature solar applications显示文摘The ever-present demand for energy from various application in industrial and domestic processes has led to the consumption of fossil fuel at a rapid rate with adverse effect due to global warming.This study focuses on the thermal energy storage aspect intended for medium temperature applications.A novel composite A70 and PANI was prepared and characterized.The study investigates the composites thermophysical and optical properties.Differential Scanning Calorimetry and Transient Hot Bridge measured thermal storage capacity and thermal conductivity of the composite,respectively.The heat storage capacity of the composite remained stable within 4%whereas a highest rise of 11.96%in thermal conductivity was measured.The composites thermal,chemical,and physical stability were analysed from Thermogravimetric Analyser,Fourier Infrared Transform,and Scanning Electron Microscope,respectively.The composites were thermally stable up to a temperature of 250°C.No chemical reaction occurred between the nanomaterial and base PCM matrix.The microscopic visuals did not show any considerable change in the microscopic structure of the material.In the case of optical properties,the composites showed significant reduction in transmittance of solar spectrum with respect to pure A70.The maximum decrement in transmission was around~89%compared to A70.As the composite prepared were thermally stable till 250°C,hence may be utilized for solar thermal and low concentrated photovoltaic application but not limited to these.A.K.Pandey Mathew George Nasrudin Abd Rahim V.V.Tyagi Syed Shahabuddin R.Saidur 2021Energy and Built Environment2021,2,3:0
5Effect of graphene and its derivatives on thermo-mechanical properties of phase change materials and its applications:a comprehensive review显示文摘Phase change materials(PCMs)play a leading role in overcoming the growing need of advanced thermal management for the storage and release of thermal energy which is to be used for different solar applications.However,the effectiveness of PCMs is greatly affected by their poor thermal conductivity.Therefore,in the present review the progress made in deploying the graphene(Gr)in PCMs in the last decade for providing the solution to the aforementioned inadequacy is presented and discussed in detail.Gr and its derivatives((Gr oxide(GO),Gr aerogel(GA)and Gr nanoplatelets(GNPs))based PCMs can improve the thermal conductivity and shape stability,which may be attributed to the extra ordinary thermo-physical properties of Gr.Moreover,it is expected from this review that the advantages and disadvantages of using Gr nanoparticles provide a deep insight and help the researchers in finding out the exact basic properties and finally the applications of Gr can be enhanced.In this work,Gr and its derivatives based PCMs was characterized by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction spectroscopy(XRD),and scanning electron microscopy(SEM)by which crystal structure was known,phase was identified along with the knowledge of surface structure respectively.The increase in the mass fraction(%)of the filler(Gr and its derivatives)led to even better thermo-physical properties and thermal stability.The thermal characterization was also done by differential scanning calorimetry(DSC),thermo gravimetric analysis(TGA)and thermal conductivity tests.The enthalpy of freezing and melting showed that Gr and its derivatives based PCMs had a very high energy storage capability as reflected in its various applications.Sumit NAGAR Kamal SHARMA A.K.PANDEY V.V.TYAGI 2022Frontiers in Energy2022,16,2:0
6Effects of harvesting intensities and techniques on re-growth dynamics and quality of Terminalia bellerica fruits in central India显示文摘Terminalia bellerica Roxb.(Belleric myrobalan)is one of the important multipurpose trees in central India.The fruits of the tree are highly valued for medicinal uses,with the greatest demand coming from the pharmaceutical industry.This has resulted in overexploitation and present harvesting practices have led to a significant decline in natural regeneration for this tree species.Our study was conducted from 2006 to2009 in Chhattisgarh(India)to standardize suitable harvesting practices for sustainable management for this valuable species.Experiments were conducted at four different sites located in Dhamtari,Sarguja,and Raigarh forest divisions of the state,covering both protected and open forest in a complete randomized block design(RCBD).At each site,linear transects of 200 m別100 m(2 ha)were randomly selected to sample the initial population and study the effects of two harvesting methods(traditional and nondestructive)and four harvesting intensities(60%,70%,80%,and 90%)on the sustainability of T.bellerica.Fruits were collected and analyzed for their tannin and gallic acid content.Significant increase in tannin and gallic acid content was found with the maturity of fruits(September to December).This is the first study to experimentally assess the consequences of harvesting of T.bellerica fruits in central India.Our findings reveal that harvesting intensity,time,and method are key factors for maintaining the population.Nondestructive harvesting methods were found to be superior to traditional harvesting in terms of regeneration,recruitment,and concentration of active ingredients.When the fruits were harvested through non-destructive means at maturity,the population of species increased.The study concludes that 70%harvest of T.bellerica fruits through non-destructive means maintains the sustainability and provides quality raw material for the pharmaceutical industry.A.K.Pandey Pankaj Bhargava 2014Journal of Forestry Research2014,25,1:0
7喷丝头的制造、维修和测试显示文摘喷丝头是生产合成纤维中最昂贵的部件之一。适合于制造喷丝头的材料的要求虽然未完全确定,但很明显这种材料必须有优良的耐氧化、耐腐蚀性,以及能长期保持形状、强度、硬度和韧性。N.D.Sharma A.K.Pandey 关桂荷 1991国外纺织技术(化纤.染整.环境保护分册)1991,,1:0
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