Nusselt number and friction factor correlations for solar air heater duct with broken V-down ribs combined with staggered rib roughness. The special collection covers climatological analyses, soiling….
The research published in these titles paves the way for new fields of study, gives rise to new techniques, and provides inspiration to contemporary researchers. Log in | Register Cart. It is seen that there is a significant change in Nusselt number and friction factor as a result of providing discrete multi v-shape ribs. Solar drying refers to the method of using the sun’s energy for drying but excludes open air sun drying. Thermohydraulic performance of solar air heater has been found to be substantially improved by the application such perforated baffles. The results of this ABC analysis show an increase in net output work and the thermal efficiency up to more than 55%, which in turn leads to have less specific fuel consumption. The increase of greenhouse gas (GHG) emissions is irreversibly raising the earth’s temperature, with its effects already being seen across the world, with higher frequency and intensity of extreme weather events and natural disasters. Website © 2020 AIP Publishing LLC. Organization of QDs into arrays leads to increase in the oscillator strengths and overall brightening of the optical transitions.
High capacity cobalt boride prepared via vacuum freeze-drying method and used as anode material for alkaline secondary battery. The streamwise and spanwise spacing of jets has been varied from 0.435 to 1.739 and 0.435 to 0.869, respectively, and Reynolds number range covered is 3800–16000. Stand-alone micro-hydro power plant with induction generator supplying single phase loads.
The effect of geometrical parameters, especially the streamwise and spanwise pitch has been investigated. s), high thixotropic index (6.50), and good printability when the percentage of organic medium is about 12.00 wt. Micro-hydro power plants less than 10 kW usually supply isolated networks. Therefore, the maximum efficiency point tracking (MEPT) controller is necessary to maintain the optimal efficiency over a broad range of operating conditions. Yuhao Nie, Yuchi Sun, Yuanlei Chen, Rachel Orsini and Adam Brandt, Klemens Ilse, Muhammad Zahid Khan, Katja Lange, Harish Nagari Gurumoorthy, Volker Naumann, Christian Hagendorf and Jörg Bagdahn, Yelena L. Pichugina, Robert M. Banta, W. Alan Brewer, L. Bianco, C. Draxl, J. Kenyon, J. K. Lundquist, J. The electrochemical activities of the Co–B samples were examined by cyclic voltammetry (CV) and charge–discharge test. The heat transfer characteristics and performance of the flat plate solar air heater with thermal storage are to be studied in this paper deals with the effect of the solar intensity. RENEWABLE ENERGY 5.439; INTERNATIONAL JOURNAL OF COAL GEOLOGY 5.330; Journal of Energy Chemistry 5.162; FUEL 5.128; Sustainable Energy & Fuels 4.912; ENERGY … The Journal of Renewable and Sustainable Energy (JRSE) is an interdisciplinary, peer-reviewed journal covering all areas of renewable and sustainable energy relevant to the physical science and engineering communities. characteristics of solar air heater duct roughened with broken V-down rib combined with staggered rib piece. Website © 2020 AIP Publishing LLC. Manage your foundational research collections. The relative gap width (g/e) was varied from 0.5 to 1.5. Iranna-Bapat’s model demonstrated acceptable results, and statistically displayed lower values of RMSEs. To sign up for alerts, please log in first. Since 2019, the Editor-in-Chief is Carlos F. M. Coimbra (University of California San Diego) and the Deputy Editors are Jan Kleissl (University of California San Diego) and Raúl Cal (Portland State University). The adoption behavior of new energy automotive technology in Chinese firms: A knowledge rigidity perspective. In this paper, results of an experimental investigation on heat transfer and friction in a rectangular duct roughened with discrete multi v-shaped rib on one of its broad wall are presented. Taking related interactive factors into account, this paper develops a system dynamics model for describing the impact of knowledge rigidity on adoption of new energy automotive technology in Chinese firms. 25.5 CiteScore. Copyright © 2020 Elsevier Ltd. All rights reserved.
The availability of the solar energy potential data is very scarce and often not readily accessible. With this approach, we have been able to achieve power conversion efficiency of 5.4% using a standard solar simulator with an irradiance of 100 mW/cm2.
Effect of solar intensity on efficiency of the convection solar air heater. The results show a stable operation for a wide range of loads, during both steady-state and transitory regimes; moreover, the maximum obtained power in single-phase mode of operation is close to the generator rating in three-phase mode of operation. It is also found that the duct having this roughness geometry results in best thermo-hydraulic performance in comparison to other geometries under similar operating conditions. to keep up with new developments in theory and applications and to provide alternative energy solutions to current issues such as the greenhouse effect, sustainable and clean energy … Reynolds number and roughness parameters on Nusselt number and friction factor has been explored and the results are compared with continuous V-down rib roughened duct and smooth duct under similar flow conditions. This model uses the most commonly measurable meteorological parameters such as ambient temperature, humidity, wind-speed, moisture for a given location. 25.5 CiteScore. It was found that (3–sulfonic acid)–propyltriethylammonium chloroironinate [HO3S–(CH2)3–NEt3]Cl–FeCl3 (molar fraction of FeCl3 x = 0.67) was an efficient catalyst for the reaction, and a synergetic effect of Brønsted and Lewis acid sites enhanced the catalytic performance of ionic liquid (IL). As a result of using scavenging air to air heat exchanger, the exit desiccant concentration increases by about 21.5% while the heat rate required for regeneration can be decreased by about 18% for the same exit concentration. We examined the energy and costs savings potential by comparing existing prevalent T12 fluorescent lighting fixtures to two T8 fixtures and two T5 fixtures. Through simulations and experiments, the reliability of such a configuration is tested when supplying varying loads. Heat transfer and friction characteristics of solar air heater duct roughened by broken V-shape ribs combined with staggered rib piece. Sign in to set up alerts.
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The review covers the current state of theoretical study, choice of adsorbent-adsorbate, experimental performance study, and further scope of research in adsorption cooling system. Considering the long hot and sunny days of summer (about 12 h in Yazd), the use of this system in warm and dry region is recommended. The main objective of this study was to estimate the monthly average global solar radiation at various locations for South America, by the generalized Iranna-Bapat’s model. View editorial board. The computed values from Iranna-Bapat’s model are compared with the measured values. Enhancement of efficiency of a conducting polymer P3HT:CdSe/ZnS quantum dots hybrid solar cell by adding single walled carbon nanotube for transporting photogenerated electrons. Journal of Renewable and Sustainable Energy | Citations: 886 | Read 1100 articles with impact on ResearchGate, the professional network for scientists. This paper presents the outcome of experimental study on heat transfer and fluid friction Keep up to date with the latest research in your field. The journal also aims to help researchers, scientists, manufacturers, institutions, world agencies, societies, etc. Using numerical methods, we demonstrated that the feed-in tariff model has the potential to exhibit bandwagon or accelerated adoption effects. Experimental data pertinent to heat transfer and friction was generated and thermohydraulic performance was determined for different sets of roughness and flow parameters. Different ways to characterize such policies have included whether these policies are Price driven or Quota (Quantity) driven, generation based or capacity driven, etc. Artificial roughening of a broad wall of solar air heater leads to significant enhancement in heat transfer besides comparable rise in friction losses. Read the latest issue and learn how to publish your work in International Journal of Sustainable Energy. The interdisciplinary approach of the publication ensures that the editors draw from researchers worldwide in a diverse range of fields. Governmental subsidy encourages the firms to further develop the production capacity of new energy technology, though it only works after the mass production is initiated.