Готові списки джерел за темами / (ƞ𝑡ℎ); Thermo hydraulic efficiency

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Добірка наукової літератури з теми "(ƞ𝑡ℎ); Thermo hydraulic efficiency"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "(ƞ𝑡ℎ); Thermo hydraulic efficiency"

Dr., Ashwini Kumar*. "A REVIEW REPORT FOR HEAT TRANSFER AND FLUID FLOW CHARECTRISTICS." Global Journal of Engineering Science and Research Management 4, no. 10 (2017): 98–120. https://doi.org/10.5281/zenodo.1034495.

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Solar air heaters are one of the simplest and cost effective solar energy utilization systems for various drying applications. The thermal efficiency of solar air heaters is found to be low due to low heat transfer coefficient on the air side. Attempts have been made to enhance the heat transfer rate from the absorber plate to air by using different roughness elements. Enhancement of heat transfer coefficient is achieved by providing artificial roughness, always goes with an increment of pressure drop and more pumping power is required. So, there is a need to optimize the system parameters to

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Smirnov, V. V., Yu V. Yavorovsky, V. V. Sennikov, and D. O. Romanov. "Comparative analysis of the efficiency of the application of thermal-hydraulic distributor with classical schemes of connecting subscribers." Vestnik IGEU, no. 3 (2019): 5–13. http://dx.doi.org/10.17588/2072-2672.2019.3.005-013.

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Analysis of the use of a thermo-hydraulic distributor in district heating schemes showed insufficient study of the mutual influence of the connected circuits, on which the coefficient of hydraulic stability of the heating network depends, and the lack of a comparative analysis of the efficiency of heat supply when using a scheme with a thermo-hydraulic distributor compared to widely used subscriber connection schemes. The purpose of the study is to compare the economic and energy efficiency of the proposed and existing subscriber connection schemes, which is an important task. In laboratory co

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Ferreiro Garcia, Ramon. "Prototyping disruptive self-sufficiency power machines composed by cascaded power units based on thermo-hydraulic actuators." JOURNAL OF ADVANCES IN PHYSICS 22 (September 19, 2024): 212–41. http://dx.doi.org/10.24297/jap.v22i.9662.

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This research focuses on developing a prototype for a disruptive Self-Sustaining Power Machine (SSPM) that consists of cascaded power units (PUs). Each PU integrates thermo-mechanical and thermo-hydraulic actuators to drive hydraulic pumps connected to generators. The prototype's design leverages two thermal cycle types, sVsVs and VsVs, which enable self-sustaining operations by employing several strategic capabilities that challenge the limitations of second-kind perpetual motion machines (PMMs). Therefore, key capabilities include: 1- Performing useful mechanical work through the expansion a

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Khalatov, А. А., І. І. Borisov, G. Kovalenko, and M. Muliarchuk. "APPLICATION OF DIMPLES AND HELICAL GROOVES ON THE OUTTER SURFACE OF TUBES TO INCREASE THERMAL-HYDRAULIC EFFICIENCY OF TUBE BUNDLES AT CROSS FLOW." Thermophysics and Thermal Power Engineering 46, no. 3 (2022): 16–22. http://dx.doi.org/10.31472/ttpe.3.2022.11.

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The flow structure and thermo-hydraulic efficiency of cross flow of tube bundles with dimples and helical grooves have been analyzed. The Reynolds number range (103-104) was typical for industrial heat exсhangers. It was found that dimples and grooves decrease scientifically the cylinder wake area and reduces the hydraulic losses. The heat transfer augmentation in five-row tube bundle by dimples is 35-40% while pressure drop increase by 10-15%. The hydraulic resistance of two-row bundle of tube with helical grooves is 20% lower than that of a smooth tube bundle, while heat transfer augmentatio

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Zahid, Hamid, Abdullah Mubashar, Muhammad Waqas, Muhammad Siddiqi, Umair Munir, and Syed Naqvi. "Experimental and CFD simulation study of shell and tube heat exchangers with different baffle segment configurations." Thermal Science, no. 00 (2022): 75. http://dx.doi.org/10.2298/tsci220124075z.

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Shell and tube heat exchanger (STHX) is an implement that has tremendous applications in numerous industrial processes and research areas. In this study, the commercial software ANSYS is used for 3-D computational fluid dynamics (CFD) to compare the thermo-hydraulic performance of STHXs with recently developed tri-angular (TRI) baffles, and tri-flower (TF) baffles with conventional segmental (SG) baffles at different flow rates. Simulations have been performed to analyze the heat transfer coefficient, pressure drop, and overall thermo-hydraulic performance among the recently developed TRI-STHX

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Ketelsen, Søren, Sebastian Michel, Torben O. Andersen, Morten Kjeld Ebbesen, Jürgen Weber, and Lasse Schmidt. "Thermo-Hydraulic Modelling and Experimental Validation of an Electro-Hydraulic Compact Drive." Energies 14, no. 9 (2021): 2375. http://dx.doi.org/10.3390/en14092375.

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Electro-hydraulic compact drives (ECDs) are an emerging technology for linear actuation in a wide range of applications. Especially within the low power range of 5–10 kW, the plug-and-play capability, good energy efficiency and small space requirements of ECDs render this technology a promising alternative to replace conventional valve-controlled linear drive solutions. In this power range, ECDs generally rely on passive cooling to keep oil and system temperatures within the tolerated range. When expanding the application range to larger power classes, passive cooling may not be sufficient. Re

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V. S. Hans, Sukhmeet Singh, and R. S. Gill. "Thermal and Thermo-hydraulic Performance of Packed Bed Solar Air Heater." Journal of Agricultural Engineering (India) 51, no. 1 (2024): 51–57. http://dx.doi.org/10.52151/jae2014511.1544.

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Modification of flow passage of air in a solar air heater using a packing material is one of available techniques to considerably improve thermal performance of solar air heaters. In an outdoor experimental study, thermal and thermohydraulic performance of a packed bed solar air heater were evaluated and compared with that of a conventional solar air heater. It was observed that due to presence of mild steel chips in the flow passage of air in packed bed solar air heater, its thermal efficiency improved considerably as compared to that of conventional solar air heater for the entire range of R

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Afsahnoudeh, Reza, Andreas Wortmeier, Maik Holzmüller, Yi Gong, Werner Homberg, and Eugeny Y. Kenig. "Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Secondary Structuring: A Numerical Analysis." Energies 16, no. 21 (2023): 7284. http://dx.doi.org/10.3390/en16217284.

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Pillow-plate heat exchangers (PPHEs) represent a suitable alternative to conventional shell-and-tube and plate heat exchangers. The inherent waviness of their channels promotes fluid mixing in the boundary layers and facilitates heat transfer. The overall thermo-hydraulic performance of PPHEs can further be enhanced by applying secondary surface structuring, thus increasing their competitiveness against conventional heat exchangers. In this work, various secondary structures applied on the PPHE surface were studied numerically to explore their potential to enhance near-wall mixing. Computation

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Shafiq, Mehak, Muhammad Farooq, Waqas Javed, George Loumakis, and Don McGlinchey. "Thermo-Hydraulic Performance Analysis of Fe3O4-Water Nanofluid-Based Flat-Plate Solar Collectors." Sustainability 15, no. 6 (2023): 4704. http://dx.doi.org/10.3390/su15064704.

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A cost-effective alternative for lowering carbon emissions from building heating is the use of flat-plate solar collectors (FPSCs). However, low thermal efficiency is a significant barrier to their effective implementation. Favorable nanofluids’ thermophysical properties have the potential to increase FPSCs’ effectiveness. Accordingly, this study evaluates the performance of an FPSC operating with Fe3O4-water nanofluid in terms of its thermo-hydraulic characteristics with operating parameters ranging from 303 to 333 K for the collector inlet temperature, 0.0167 to 0.05 kg/s for the mass flow r

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Azam, Mohammad. "Thermo Hydraulic Analysis of a Heat Pipe Using ANSYS Fluent." International Journal for Research in Applied Science and Engineering Technology 12, no. 8 (2024): 259–66. http://dx.doi.org/10.22214/ijraset.2024.63899.

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Abstract: Miniaturization, Integration of functionality and speed increase are recognized as business drivers in electronics industry today. The aspects increase power dissipation, high temperatures and affects reducing sizes because of limitations in cooling techniques. Heat pipes come handy in these situations as they operate with highest heat conductance compared to any other mode of heat transfer and available over wide range of parameters. It consists of an evaporative section, adiabatic section, and condensing section. The working fluids generally used are water, ethanol, acetone, sodium

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Дисертації з теми "(ƞ𝑡ℎ); Thermo hydraulic efficiency"

Мейріс, Антон Жанович. "Теплообмін та теплогідравлічна ефективність пучків труб з поверхневими заглибленнями". Thesis, Інститут технічної теплофізики НАН України, 2018. https://ela.kpi.ua/handle/123456789/38181.

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Робота виконана в Національному технічному університеті України «Київський політехнічний інститут імені Ігоря Сікорського» МОН України на кафедрі фізики енергетичних систем і в Інституті технічної теплофізики НАН України у відділі високотемпературної термогазодинаміки. Захищена в Інституті технічної теплофізики НАН України.<br>Дисертація присвячена експериментальному та теоретичному дослідженню теплообміну та гідродинаміки при поперечному обтіканні одиночної труби та пучку труб із поверхневими заглибленнями. Теоретично досліджено теплообмін та гідродинаміку при поперечному обтіканні одиночн

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Частини книг з теми "(ƞ𝑡ℎ); Thermo hydraulic efficiency"

Sarcinella, Antonella, José Luís Barroso de Aguiar, Sandra Cunha, and Mariaenrica Frigione. "Novel Sustainable Polymer-Based Phase Change Materials (PCMs) for Mortars Based on Different Binders for the Energy Efficiency of Buildings Located in Different Climatic Regions." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_61.

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AbstractA possible solution to reduce the consumption of fossil fuel and energy demand to power heating and cooling devices is represented by Phase Change Materials (PCMs). They can absorb, store and release energy according to their physical state that changes with the environmental temperature. In this work, novel eco-sustainable PCMs were developed through the form-stable method. Through this process, it was possible to create composite PCMs consisting of a natural inert matrix (i.e., a very porous stone obtained from processing waste) and an eco-friendly polymer, i.e., Poly-Ethylene Glycol

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Sihag, Anish, Neeti Arora, Munish Gupta, and Puneet Katyal. "Experimental Investigations on Thermo-Hydraulic Performance of TIO2/Water Nanofluids in a Flat Tube." In Advances in Chemical and Materials Engineering. IGI Global, 2025. https://doi.org/10.4018/979-8-3693-5513-8.ch010.

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The investigation aims to experimentally determine the thermophysical properties and heat transfer characteristics of TiO2 and water nanofluids flowing across a flat tube while characterizing the TiO2 nanoparticles. Thus, the paper contributes by experimentally assessing TiO2/water nanofluids in a flat tube, potentially offering improved heat transfer efficiency and insights into nanoparticle characterization, benefiting engineering and sustainability. The characterization of nanoparticles is performed using FESEM, XRD, and FT-IR. The experiment was conducted under a constant heat flux in a la

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Seiphoori Ali, Ferrari Alessio, and Laloui Lyesse. "An advanced calibration process for a thermo-hydro-mechanical triaxial testing system." In Deformation Characteristics of Geomaterials. IOS Press, 2011. https://doi.org/10.3233/978-1-60750-822-9-396.

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This paper presents an innovative double cell triaxial system developed for better understanding of the complex thermo-hydro-mechanical behaviour of soils. In addition to the conventional triaxial mechanical testing, the equipment is aimed to perform suction controlled tests under wide range of temperature and confining pressure. Suction controlled tests are implemented by the axis translation as well as vapor techniques to control the matric and total suction. The device is provided with two advanced features; the double-wall system which allows precise measurement of volume variation of the

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Mahdavi, Arash. "Recent Progress in Heat Transfer and Fluid Flow Characteristics Within Cross-Flow Heat Exchangers: A Passive Approach." In Innovative Heat Exchanger Technologies, Developments and Applications [Working Title]. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1005564.

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Efficient heat transfer in industry and commercial sectors is vital if saving energy is a concern. Heat exchangers are devices that are built for this aim. Here, cross-flow heat exchangers are analyzed to increase the heat transfer rate and reduce the pressure drop simultaneously. Cross-flow heat exchangers possess a simple geometry, yet a complex flow behavior. The reason lies behind the von Karman vortex structures that are created due to the presence of an initial row of tubes. This will affect the next stages of tube bundles and form an intricate thermo-hydraulic interplay. In general, the

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Тези доповідей конференцій з теми "(ƞ𝑡ℎ); Thermo hydraulic efficiency"

Afsahnoudeh, Reza, Julia Riese, and Eugeny Y. Kenig. "Thermo-Hydraulic Performance of Pillow-Plate Heat Exchangers with Streamlined Secondary Structures: A Numerical Analysis." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.178665.

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Анотація:

Pillow-plate heat exchangers (PPHEs) represent a viable alternative to conventional shell-and-tube and plate heat exchangers. The waviness of their channels intensifies fluid mixing in the boundary layers and facilitates heat transfer. Applying secondary surface structuring can further enhance the overall thermo-hydraulic performance of PPHEs, thus increasing their competitiveness against conventional heat exchangers. In this work, streamlined secondary structures applied on the PPHE surface were studied numerically to explore their potential in enhancing near-wall fluid mixing. Computational

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Lara-Monta�o, Oscar D., Fernando I. G�mez-Castro, Claudia Guti�rrez-Antonio, and Elena N. Dragoi. "Optimization Of Heat Exchangers Through an Enhanced Metaheuristic Strategy: The Success-Based Optimization Algorithm." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.167193.

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The optimization of shell-and-tube heat exchangers (STHEs) is critical for improving energy efficiency, reducing operational costs, and mitigating environmental impacts in industrial applications. This study evaluates the performance of the Success-Based Optimization Algorithm (SBOA), a novel metaheuristic strategy inspired by behavioral patterns in success perception, against seven established algorithms�Cuckoo Search, Differential Evolution (DE), Grey Wolf Optimization (GWO), Jaya Algorithm, Particle Swarm Optimization, Teaching-Learning Based Optimization, and Whale Optimization Algorithm�f

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Nakashima, Celso Y., Silvio Oliveira, and Elisio F. Caetano. "Thermo-Hydraulic Model of a Twin-Screw Multiphase Pump." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60139.

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The twin-screw multiphase pump has been studied as an alternative equipment to substitute the conventional system (fluid separation, liquid pumping and gas compression) in petroleum boosting. By “pumping” gas and liquid together, the multiphase pump could reduce production costs, particularly in deepwater activity. This paper presents a thermo-hydraulic model of a twin-screw multiphase pump developed to determine important parameters such as: volumetric efficiency, absorbed power, discharge conditions, heat transfer and pressure and temperature profiles. The continuous movement from suction to

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Virt, Vitaly, Vladimir Kosolapov, Vener Nagimov, et al. "Individual Fracture Efficiency Monitoring in Horizontal Wells by Using a New 3d Fine-Grid Temperature Modelling." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207237-ms.

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Abstract Profitable development of hard-to-recover reserves often involves drilling of horizontal wells with multistage hydraulic fracturing to increase the oil recovery factor. Usually to monitor the fracture sweep efficiency, pressure transient analysis is used. However, in case of several fractures this method delivers only average hydrodynamic parameters of the well-fracture system. This paper illustrates the value of temperature logging data and demonstrates possibilities of the 3-D thermo-mechanical modelling in evaluating the differential efficiency of multi-stage hydraulic fracturing.

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Batarseh, Sameeh I., Damian P. San Roman Alerigi, Ahmed A. Alrashed, and Ibrahim Zefzafy. "Photonic-Hydraulic Fracturing Hybrid Approach Minimizing Breaking Pressure." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216510-ms.

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Abstract This paper presents a novel approach to reducing the hydraulic breakdown pressure utilizing near-infrared continuous-wave high-power lasers (HPL). The thermo-mechanical and thermo-chemical processes induced by the HPL illumination of the rock above a particular threshold can lead to lower formation strengths, significantly reducing the formation's breaking pressure. This HPL application could improve energy efficiency and reduce the risk of hydraulic fracturing operations. The rock absorbs a portion of the HPL's energy as thermal energy, causing a localized temperature surge, resultin

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Li, Bing, Samuel D. Marshall, Rerngchai Arayanarakool, Lakshmi Balasubramaniam, Poh Seng Lee, and Peter C. Y. Chen. "Study of Performance Impact by Thermo-Hydraulic Developing Entrance in Spiral Microchannel With CFD Analysis." In ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/mnhmt2016-6408.

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Microchannel heat exchangers have become widely employed in modern systems, found within aerospace applications, waste heat recovery, water treatment processes, air conditioning, biomedical treatments and various industrial process applications. The microchannels increase the ratio of heat transfer surface to volume, thus improving the heat transfer performance significantly whilst reducing the overall weight and size. Moreover, by utilizing secondary flow from Dean Vortices induced by curved microfluidic channels, the fluid flow and heat transfer performance can be enhanced even further beyon

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Karlén, Niko, Tatiana Minav, and Matti Pietola. "Investigation of Thermal Effects in Direct Driven Hydraulic System for Off-Road Machinery." In 9th FPNI Ph.D. Symposium on Fluid Power. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fpni2016-1512.

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Several types of off-road machinery, such as industrial trucks, forklifts, excavators, mobile cranes, and wheel loaders, are set to be operated in environments which can differ considerably from each other. This sets certain limits for both the drive transmissions and working hydraulics of these machines. The ambient temperature must be taken into account when selecting the hydraulic fluid since the viscosity and density of the fluid are changing at different operating temperatures. In addition to the temperature, energy efficiency can also be a problem in off-road machinery. In most off-road

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Cheng, Jie, Yingwei Wu, G. H. Su, Suizheng Qiu, and Wenxi Tian. "Neutronics and Thermo-Hydraulic Analysis of Water-Cooled Blanket Based on PWR and SCWR Water Conditions for CFETR." In 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60392.

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China Fusion Engineering Test Reactor (CFETR) is a test tokamak reactor being designed in China to bridge the gap between ITER and future fusion power plant. As one of the candidates, a water-cooled solid breeder blanket based on PWR (pressurized water reactor) and SCWR (super-critical water reactor) water conditions were proposed. In the concept, multiplying layers separated by three breeding layers were designed and optimized for higher Tritium Breeding Ratio (TBR) and uniform heat distribution. This blanket uses the Li2TiO3 lithium ceramic pebbles as the breeder, while beryllium pebbles as

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Polanský, Jiří, and Roman Gášpár. "Optimization of the Thermodynamics Cycles of Generation IV Gas-Cooled Fast Reactors." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64565.

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This paper deals with the thermo-hydraulic properties of Generation IV Gas Cooled Fast Reactors. The paper is focused on the comparison of direct and indirect thermodynamic cycles of helium cooled reactors from a thermodynamic point of view. The calculation includes pressure losses at all major parts of the equipment — reactor, heat exchangers, pipe lines, etc. The compressor and the gas turbine efficiencies are included in calculation as well. The working fluid used in the primary circuit is helium. In the secondary circuit a mixture of helium and nitrogen is used. The cycle characteristic po

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Johansen, Per, Daniel B. Roemer, Torben O. Andersen, and Henrik C. Pedersen. "Analysis of the Thermo-Viscous Effect on Friction and Energy Dissipation in Oil Lubricated Interfaces." In 9th FPNI Ph.D. Symposium on Fluid Power. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fpni2016-1554.

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The last decade an increasing amount of work are performed with the aim of enhancing efficiency and reliability of fluid power components. Consequently, the loss mechanisms of lubricated tribological interfaces are of particular interest. This has led to development of sophisticated three-dimensional thermo-elasto-hydrodynamic lubrication models of fluid power components. The computational efforts involved in simulation with such models entail that design optimization are to some extend impractical. However, such models are also pursued in theoretical tribology with the aim to study loss and w

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