Academic literature on the topic 'Break thermal efficiency'

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Journal articles on the topic "Break thermal efficiency"

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Susorova, Irina, Brent Stephens, and Benjamin Skelton. "The Effect of Balcony Thermal Breaks on Building Thermal and Energy Performance: Field Experiments and Energy Simulations in Chicago, IL." Buildings 9, no. 9 (2019): 190. http://dx.doi.org/10.3390/buildings9090190.

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A common envelope performance problem in buildings is thermal bridging through balcony slab connections, which can be improved with the use of commercially available thermal break products. Several prior studies have used simulation-based and/or hot box test apparatus approaches to quantify the likely effect of balcony thermal breaks on effective thermal resistance of building enclosures. However, in-situ measurements of thermal performance in real buildings remain limited to date. This study uses a combination of field measurements and models to investigate the effects of installing balcony t
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Xiao, Helin, Xiaolong Yang, Ru Wang, Shengjun Li, Jie Ruan, and Hongling Ju. "The effects of exhaust gas re-circulation and injection timing on combustion performance and emissions of biodiesel and its blends with 2-methylfuran in a diesel engine." Thermal Science 24, no. 1 Part A (2020): 215–29. http://dx.doi.org/10.2298/tsci190112304x.

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In this study, the influences of injection timing and exhaust gas re-circulation on combustion and emissions characteristics of biodiesel/2-methylfuran blends are investigated on a modified water-cooled 4-cylinder four-stroke direct injection compression ignition engine. The experimental conditions are, respectively, to adjust injection timing and exhaust gas re-circulation ratio at 0.38 MPa break mean effective pressure with the engine speed at 1800 rpm constantly. With injection timing in advance, the peak cylinder pressure rose while maximum heat re-lease rate first decreased and next sligh
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Santos, Paulo, Diogo Mateus, Daniel Ferrandez, and Amparo Verdu. "Numerical Simulation and Experimental Validation of Thermal Break Strips’ Improvement in Facade LSF Walls." Energies 15, no. 21 (2022): 8169. http://dx.doi.org/10.3390/en15218169.

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Thermal bridges may have a significant prejudicial impact on the thermal behavior and energy efficiency of buildings. Given the high thermal conductivity of steel, in Lightweight Steel Framed (LSF) buildings, this detrimental effect could be even greater. The use of thermal break (TB) strips is one of the most broadly implemented thermal bridge mitigation technics. In a previous study, the performance of TB strips in partition LSF walls was evaluated. However, a search of the literature found no similar experimental campaigns for facade LSF walls, which are even more relevant for a building’s
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Jasim, Ra’ed R. "Experimental Study of the Effect of Octane Number on the Performance Coefficients of the Two Strokes Spark Ignition Engine." Tikrit Journal of Engineering Sciences 16, no. 3 (2009): 12–17. http://dx.doi.org/10.25130/tjes.16.3.08.

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The experiments had been carried out using two stroke, single cylinder type (TD113), with compression ratio of (7.3:1) Coupled to hydraulic dynamometer type (TD115). The results showed that there is enhancement of the engine performance with increasing octane number. This appears clearly when comparing the results of performance with fuel of 75 and 95 octane number. The torque increases 10% at speed of 2750 RPM. The break power also increases 18% when the octane number changed from 75 to 95 at 3000 RPM of engine speed. The same change in octane number will increase the thermal efficiency by 9%
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Yuvarajan, D., K. Pradeep, and S. Magesh Kumar. "Impact of Oxygenated Additives on Performance Characteristics of Methyl Ester in IC Engine." Applied Mechanics and Materials 852 (September 2016): 724–28. http://dx.doi.org/10.4028/www.scientific.net/amm.852.724.

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In this present work, the impact of blending n-butyl alcohol, a next generation biofuel with jatropha biodiesel on the performance of a diesel engine are examined. Tests were performed on a constant speed compression ignition engine using n-butyl alcohol / jatropha biodiesel blends. N-butyl alcohol was added to jatropha biodiesel by 10, 20 and 30% by volume. Performance parameters namely break thermal efficiency (BTE), Brake specific fuel consumption (BSFC) and Exhaust gas temperature (EGT) were analyzed in this work. It was experimentally found that by adding n-butyl alcohol to neat jatropha
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Guanco, Jerry, and Leomarich Casinillo. "Performance Evaluation of a Rice Hull-fueled Cabinet Food Dryer." Recoletos Multidisciplinary Research Journal 9, no. 1 (2021): 23–38. http://dx.doi.org/10.32871/rmrj2109.01.03.

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This study was conducted to determine the technical performance of a rice hull-fueled cabinet food dryer. Data gathered from the drying performance in terms of drying behavior, drying rate, and dryer heat utilization efficiency using cassava chips was analyzed through an experimental design. The study also evaluated fuel consumption, thermal conversion efficiency, energy use efficiency, heat utilization efficiency, temperature distribution and economic performance. Results indicated that the dryer's average fuel consumption and the thermal conversion efficiency is 11.19 kg/hr and 6.17%. While
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Santos, Paulo, Paulo Lopes, and David Abrantes. "Thermal Performance of Load-Bearing, Lightweight, Steel-Framed Partition Walls Using Thermal Break Strips: A Parametric Study." Energies 15, no. 24 (2022): 9271. http://dx.doi.org/10.3390/en15249271.

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Thermal bridges are a very relevant issue for lightweight steel-framed (LSF) construction systems given the high thermal conductivity of steel, which can negatively compromise their thermal behaviour, reduce their durability, and decrease the building energy efficiency. Several thermal bridge mitigation strategies exist, including the attachment of thermal break strips (TBS) to the steel studs’ flanges as one of the most widely employed techniques. In this research, the relevance of TBS to the thermal performance improvement of load-bearing LSF partition walls was assessed by performing a para
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Tran, Quoc Dang. "Effect of ignition timing on engine characteristics of a single cylinder spark ignition engine with CNG fueled." Science and Technology Development Journal 20, K6 (2017): 79–86. http://dx.doi.org/10.32508/stdj.v20ik6.1179.

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This article shows an investigated research on Compressed Natural Gas (CNG) engine with a port injection when varying ignition timing. The obtained results from simulating study have indicated that both of brake thermal efficiency and torque have a similar trend when varying ignition timing. The effect of ignition timing on the value of brake thermal efficiency is stronger in comparison with torque, however, the increase in engine speed or lambda value have to adjust the ignition timing more early. To reach the maximum break torque at each engine speed, the ignition timing should be adjusted I
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Mohan, B., S. Raju, and M. Srinivasnaik. "Experimental Investigation on Performance Characteristics o f Diesel Engine Using Various Blended Biodiesels." Indian Journal Of Science And Technology 17, no. 37 (2024): 3865–70. http://dx.doi.org/10.17485/ijst/v17i37.2793.

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Objectives: To evaluate the performance characteristics of diesel engines through experimental research with various biodiesel blends. Method: Three types of oils were chosen for this study: waste cooking oil, waste chicken oil, and palm oil. The methyl esters were produced from waste chicken oil (COME), waste cooking oil (WCOME), and palm oil (POME). The test runs were done on a 4.5 kW direct injection, air-cooled, four-stroke, single-cylinder, and constant-speed diesel engine using varied fuel at maximum load. Findings: This study finds performance analysis for a variety of methyl esters and
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Chai, Jian, Wenyue Fan, and Jing Han. "Does the Energy Efficiency of Power Companies Affect Their Industry Status? A DEA Analysis of Listed Companies in Thermal Power Sector." Sustainability 12, no. 1 (2019): 138. http://dx.doi.org/10.3390/su12010138.

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Under the concept of green development, coal and oil control policies were frequently introduced, but the “cold” thinking under the “hot” environment is more conducive to the smooth promotion of the “transitional period” of China’s power-structure transformation. How to better consider production efficiency and environmental benefits is the theme that thermal power enterprises need to constantly break through. The most feasible “transitional period” path for thermal power enterprises is improving the efficiency of energy saving, reducing emissions, and simultaneously ensuring benefits and soci
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Dissertations / Theses on the topic "Break thermal efficiency"

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Nwankwo, Jonathan Emeka. "Gas utilization in Nigeria : an economic comparison of gas-to-liquid and liquefied natural gas technologies / J.E. Nwankwo." Thesis, North-West University, 2008. http://hdl.handle.net/10394/2056.

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Book chapters on the topic "Break thermal efficiency"

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Xu, Liu-Jun, and Ji-Ping Huang. "Theory for Enhanced Thermal Concentrators: Thermal Conductivity Coupling." In Transformation Thermotics and Extended Theories. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5908-0_8.

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AbstractIn this chapter, we propose the theory of conductivity coupling to solve the problem that the concentrating efficiency of a thermal concentrator is restricted by its geometric configuration. We first discuss a monolayer scheme with an isotropic thermal conductivity, which can break the upper limit but is still restricted by the geometric structure. We further explore another degree of freedom by considering the monolayer scheme with an anisotropic thermal conductivity or adding the second shell with an isotropic thermal conductivity, thereby freeing the concentrating efficiency from th
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Gonzalez Cuadra, Jaime, Abderrahim Lahlahi, Samuel Porcar, et al. "Zinc Oxide Thin Films: Synthesis and Photocatalytic Applications." In Nanotechnology and Nanomaterials. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.115470.

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The upcoming chapter explores zinc oxide (ZnO) thin films, examining their crystalline and optical properties. It discusses various deposition techniques for creating thin films, defined as layers from nanometers to micrometers thick, used in electronics, optics, and coatings. Thin film deposition methods, crucial for controlling film thickness and properties, include physical vapor deposition (PVD), sputtering, thermal evaporation, electron beam evaporation, and pulsed laser deposition (PLD). These techniques are vital in electronics, optics, and materials research. The chapter also covers Zn
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Kumar, Harish, and Himansh Kumar. "Experimental Investigation of Alcohol-Based Hybrid Biofuel From Used Cooking Oil Fueled in a CI Engine." In Advances in Chemical and Materials Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-5320-2.ch012.

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The current experimental study is centered on exploring the advantages of hybrid biofuel derived from used cooking oil (UCO), on the performance, combustion, and emission characteristics of a 4-stroke single-cylinder CI engine. The hybrid biofuel is based upon microemulsification of UCO, ethanol, and 2-butanol. The break thermal efficiency (BTE) of UCOHBF was almost comparable with used cooking oil-based biodiesel (B100) and B50 but slightly lower than B10 and B20 and petrodiesel. The brake specific fuel consumption (BSFC) of UCOHBF was lower than B100 and comparable with B50 but higher than B
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Udgire, Manoj Kumar N., and Dr Vishwajit Bhagwat. "EXPERIMENTAL INVESTIGATION OF PERFORMANCE ANALYSIS ON JATROPHA AS BIO DIESEL FOR A SINGLE CYLINDER COMPRESSION IGNITION ENGINE." In Futuristic Trends in Mechanical Engineering Volume 3 Book 8. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bkme8p6ch1.

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The creation of the cars in all over the world is increased due to the reliance on motor vehicles. The means of transport, energy is required, and most of them are based, and oil-based products, such as the main location in the series. In fact, it is a type of alternative fuel it is simply to any equipment with the exception of petroleum products, coal, and on the side, and the ground cover, which can be used as a fuel to operate a motor vehicle.Bio-diesel can be deleted from a variety of materials, such as oil, biomass, growth rate, greens, dairy products, debris, etc. Jatropha is one of the
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Yongsawatdigul, J., and J. W. Park. "Gelation of threadfin bream surimi as affected by thermal denaturation, transglutaminase and proteinase(s) activities." In More Efficient Utilization of Fish and Fisheries Products - Proceedings of the International Symposium on the occasion of the 70th anniversary of the Japanese Society of Fisheries Science, held in Kyoto, Japan, 7-10 October 2001. Elsevier, 2004. http://dx.doi.org/10.1016/s0167-4501(04)80035-9.

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Ben Hassen, Wafa. "Diagnosis and Monitoring of Electrical Wiring and Interconnection Systems." In Aircraft Manufacturing, Safety and Control [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1010959.

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The continued operation of aircraft beyond their initially intended service life, combined with the increasing electrification of onboard systems, has intensified the need for reliable diagnosis and monitoring of electrical wiring interconnection systems (EWIS). The latter usually operates in harsh environments, exposed to mechanical, thermal, and electromagnetic stresses that can lead to faults such as insulation damage, conductor breaks, and connector failures. Moreover, since the EWIS is often embedded within the aircraft structure, it presents significant challenges for fault detection and
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Conference papers on the topic "Break thermal efficiency"

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Pekala, Sagar Mohana, Nevin Zacharias, and Krathika Kulkarni. "Method and System for Efficient Thermal Management in Electric Vehicles." In SAENIS TTTMS Thermal Management Systems Conference. SAE International, 2024. http://dx.doi.org/10.4271/2024-28-0060.

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<div class="section abstract"><div class="htmlview paragraph">Electric Trucks offer one of the most promising alternatives to vehicles in the field of transport of goods. In battery electric trucks, heat is generated by components present in the electric truck such as battery of the electric vehicle, electric drive system, Endurance Brake System etc. which require cooling and Thermal management system to control and monitor the cooling system.</div><div class="htmlview paragraph">The thermal management system considered here includes two coolant tanks. The first coolant
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Addepalli, Srinivasa Krishna, Michael Pamminger, Riccardo Scarcelli, and Thomas Wallner. "Numerical Investigation of the Impact of Spray – Bowl Interaction on Thermal Efficiency of a Gasoline Compression Ignition Engine." In ASME 2021 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/icef2021-67851.

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Abstract Gasoline compression ignition (GCI) is a promising way to achieve high thermal efficiency and low emissions while leveraging conventional diesel engine hardware. GCI is a partially premixed combustion concept, which derives its superiority from good volatility and long ignition delay of gasoline-like fuels. The present study investigates the interaction between the piston bowl and the spray plume of a compression ignition engine that operates with a late fuel injection strategy using computational fluid dynamics (CFD) analysis. Simulations were carried out on a single cylinder of a mu
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Merca, Senfred Matthew O., Julius Caezar II M. Damo, Hannah Kristel D. Vargas, et al. "Tuned Photodegradation Efficiency of Bimetallic Copper-Iron Oxide Catalysts via Precursor Stoichiometry Control for Water Decontamination." In International Conference on Advanced Materials, Mechanics and Structural Engineering. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-umwd6s.

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Inadequate handling and disposal of contaminated industrial waste significantly contribute to environmental pollution. The presence of pollutants, including dyes, in wastewater necessitates the development of innovative remediation techniques. Metal oxide-catalyzed photodegradation capitalizes on the capacity of a dye to absorb light energy, offering a rapid method to break down the dye into less harmful, colorless byproducts. In this work, bimetallic copper-iron oxides with various copper to iron were synthesized for the photodegradation of fuchsine. The photocatalysts were prepared through o
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Choi, Gyeung Ho, Tae Kwon Kim, Boo Youn Lee, Ju Hee Lee, Yon Jong Chung, and Sung Bin Han. "An Experimental and Numerical Study of a Miller Cycle for a Gas Engine Converted From a Diesel Engine." In ASME/IEEE 2007 Joint Rail Conference and Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/jrc/ice2007-40078.

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Studies on internal combustion engines have made great efforts to develop engines with high efficiency for energy saving and emission gas reduction. The thermal efficiency of an internal combustion engine can be increased by expanding the pressure energy obtained through combustion to the maximum extent to convert the supplied thermal energy into work to the maximum extent. The cycle that can realize this goal is the Miller cycle. This Miller cycle converts the supplied thermal energy into mechanical energy to the maximum extent by making the expansion ratio greater than the compression ratio
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Rao, A. D., A. Verma, and G. S. Samuelsen. "Engineering and Economic Analyses of a Coal-Fueled Solid Oxide Fuel Cell Hybrid Power Plant." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68762.

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An advanced coal based power plant system that has an electrical efficiency of 60% on an HHV basis is defined. The solid oxide fuel cell (SOFC) hybrid has been shown to be an essential requirement in order to achieve such a high efficiency. The coal is gasified utilizing a high pressure air-blown advanced transport reactor (ATR). A thermo-economic analysis of this integrated gasification fuel cell (IGFC) plant is performed by comparing it to an integrated gasification combined cycle (IGCC) plant that utilizes a gas turbine combined cycle for power generation. Results of this thermo-economic an
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Eraslan, Tolga Arda, Cem Keskin, and Mehmet Pınar Mengüç. "Airflow Characteristics and Thermal Comfort of Air Diffusers." In ASME 2023 17th International Conference on Energy Sustainability collocated with the ASME 2023 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/es2023-107024.

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Abstract Indoor environment quality control is very important for building operations as occupant of buildings spend up to 90% of their time indoors. After Covid-19 pandemic break out, indoor environment quality has become even more crucial to the society because of health concerns. Indoor Environmental Quality (IEQ) covers conditions such as air quality, lighting, thermal conditions, ergonomics inside a building and their effects on the occupant or occupants of the building. Thermal conditions and air quality are usually achieved with the mechanical or natural ventilation systems or by HVAC e
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Huonker, Martin, Christoph Tillkorn, Stefan Dorer, and Michael Lang. "Novel optical concept for line beam optics for large area thermal processing." In ICALEO 2018: 37th International Congress on Applications of Lasers & Electro-Optics. Laser Institute of AmericaLIA, 2018. https://doi.org/10.2351/7.0003995.

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With the availability of high-power infrared laser sources, the thermal processing of large area substrates with lasers becomes increasingly attractive. Besides the laser source, one of the core components is the beam shaping optics for the generation of a line-shaped intensity profile with an extreme aspect ratio. We report on a novel optical concept for laser-based large area thermal processing based on the thin disk laser platform providing output power in excess of 10 kW per unit. The most unique feature of this novel modular concept is the capability to precisely combine several optical u
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Moghe, Shashank S., and Scott M. Janowiak. "Large Eddy Simulation of Cylindrical Jet Break-Up and Correlation of Simulation Results With Experimental Data." In ASME 2016 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icef2016-9340.

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Modern engines with increasing power densities have put additional demands on pistons to perform in incrementally challenging thermal environments. Piston cooling is therefore of paramount importance for engine component manufacturers. The objective of this CFD study is to identify the effect of a given piston cooling nozzle (PCN) geometry on the cooling oil jet fanning (spreading) phenomenon. The scope of this study is to develop a numerical set-up using the open-source CFD tool OpenFOAM® for measuring the magnitude of oil jet fanning and comparing it to experimental results. Large eddy simul
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Jericha, H., W. Sanz, E. Go¨ttlich, and F. Neumayer. "Design Details of a 600 MW Graz Cycle Thermal Power Plant for CO2 Capture." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50515.

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The high power highest efficiency zero-emission Graz Cycle plant of 400 MW was presented at ASME IGTI conference 2006 and at CIMAC conference 2007. In continuation of these works a raise of power output to 600 MW is presented and important design details are discussed. The cycle pressure ratio is increased from 40 to 50 bar by a half-speed stage connected via gears to the main compressor shaft allowing to keep the volume flow to the main compressors constant. The compressors are driven by the transonic compressor turbine stage. Mass flow to the compressors is increased by the factor of 1.27, d
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Chaudhary, Alok Subhash, Preetam Ghodake, and Kundan Biswas. "Accurate Urea Consumption Prediction in SCR System Using CFD Simulation." In SAENIS TTTMS Thermal Management Systems Conference. SAE International, 2024. http://dx.doi.org/10.4271/2024-28-0100.

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<div class="section abstract"><div class="htmlview paragraph">The selective catalytic reduction (SCR) is a technique, which is using in diesel engine to reduce harmful nitrogen oxide (NOx) emissions. SCR technique involves the injection of urea-water-solution (Water-urea solution) into the hot exhaust stream. The water first evaporates and then urea undergoes thermal decomposition. The thermal decomposition of urea produces ammonia, which reacts with the nitrogen oxides inside a SCR catalyst layers and nitrogen and water vapor are the final product. The production of ammonia from u
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Reports on the topic "Break thermal efficiency"

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Magaraphan, Rathanawan. The effects of Ethoxylated Bisphenol A Dimethacrylates content on the thermal and thermo-mechanical properties of chemical crosslinked Polylactic acid. Chulalongkorn University, 2015. https://doi.org/10.58837/chula.res.2015.85.

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Crosslinking structures of PLA can be effectively introduced into PLA by melt mixing using the initiation of dicumyl peroxide (DCP) in the presence of ethoxylated bisphenol A dimethacrylates (Bis−EMAs) which was used as a crosslinking agent. The results showed that the introduction of DCP into PLA above 3 phr increased storage modulus and complex viscosity when compared to PLA. DCP/PLA in the presence of Bis−EMAs content showed the optimum of storage modulus and complex viscosity were at a 5 phr Bis–EMAs loading and decreased as more Bis–EMAs were incorporated into DCP/PLA. The thermal stabili
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