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Gotowe bibliografie tematyczne / Corrugated louvred fin surfaces

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Gotowa bibliografia na temat „Corrugated louvred fin surfaces”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

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Artykuły w czasopismach na temat "Corrugated louvred fin surfaces"

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Sønderby, Simon Kaltoft, Mojtaba Mirhosseini, Alireza Rezania i Lasse Rosendahl. "Thermal-Hydraulic Performance of a Corrugated Cooling Fin with Louvered Surfaces". Energy Procedia 142 (grudzień 2017): 4077–84. http://dx.doi.org/10.1016/j.egypro.2017.12.328.

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KIM, Nae-Hyun. "An experimental investigation on the airside performance of fin-and-tube heat exchangers having corrugated louver fins - Part I; dry surface". Journal of Thermal Science and Technology 15, nr 1 (2020): JTST0004. http://dx.doi.org/10.1299/jtst.2020jtst0004.

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KIM, Nae-Hyun. "An experimental investigation on the airside performance of fin-and-tube heat exchangers having corrugated louver fins - Part II; wet surface". Journal of Thermal Science and Technology 15, nr 1 (2020): JTST0005. http://dx.doi.org/10.1299/jtst.2020jtst0005.

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Juneidi, Nuha, Rania Asha, Firas Jarrar i Fahrettin Ozturk. "Design for Manufacturing of an Aluminum Superplastic AA5083 Alloy Plate-Fin Heat Exchanger". Journal of Materials Science Research 5, nr 2 (10.03.2016): 115. http://dx.doi.org/10.5539/jmsr.v5n2p115.

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<p class="1Body">Compact, lightweight, strong, and corrosion-resistant heat exchangers are required for many applications. In heat exchangers, plate-fin exchangers design with corrugated fins of triangular cross-sections provide high heat transfer surface area to volume ratio. This study focuses on the design for manufacturing of an aluminum AA5083 alloy plate-fin heat exchanger. The superplastic forming method is considered for the fabrication of the heat exchanger. A two-dimensional plane strain finite element model is used to study the effect of the triangular fins’ aspect ratio on the thickness distribution and the required gas forming pressure cycles. The simulation results show that the thinning in deep channels can be improved by increasing the coefficient of friction but only up to a certain limit. In addition, increasing the coefficient of friction reduces the required applied pressure on the sheet and increases the forming time. The present effort represents a necessary step toward the design of sophisticated corrugated triangular fin surfaces considering both performance and manufacturability.</p>

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Juneidi, Nuha, Rania Asha, Firas Jarrar i Fahrettin Ozturk. "Design for Manufacturing of an Aluminum Superplastic AA5083 Alloy Plate-Fin Heat Exchanger". Journal of Materials Science Research 5, nr 2 (10.03.2016): 121. http://dx.doi.org/10.5539/jmsr.v5n2p121.

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<p class="1Body">Compact, lightweight, strong, and corrosion-resistant heat exchangers are required for many applications. In heat exchangers, plate-fin exchangers design with corrugated fins of triangular cross-sections provide high heat transfer surface area to volume ratio. This study focuses on the design for manufacturing of an aluminum AA5083 alloy plate-fin heat exchanger. The superplastic forming method is considered for the fabrication of the heat exchanger. A two-dimensional plane strain finite element model is used to study the effect of the triangular fins’ aspect ratio on the thickness distribution and the required gas forming pressure cycles. The simulation results show that the thinning in deep channels can be improved by increasing the coefficient of friction but only up to a certain limit. In addition, increasing the coefficient of friction reduces the required applied pressure on the sheet and increases the forming time. The present effort represents a necessary step toward the design of sophisticated corrugated triangular fin surfaces considering both performance and manufacturability.</p>

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Utriainen, E., i B. Sunde´n. "Evaluation of the Cross Corrugated and Some Other Candidate Heat Transfer Surfaces for Microturbine Recuperators". Journal of Engineering for Gas Turbines and Power 124, nr 3 (19.06.2002): 550–60. http://dx.doi.org/10.1115/1.1456093.

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To achieve high thermal efficiencies, 30 percent and higher, for small gas turbines a recuperator is mandatory. As the recuperator represents 25–30 percent of the overall machine cost, efforts are now being focused on establishing new low-cost recuperator concepts for gas turbine engines. In this paper the cross corrugated (CC), also called chevron pattern, heat transfer surface is reviewed to assess its thermal and hydraulic performance and compare it to some other candidate surfaces for a 50 kW microturbine. The surfaces may be categorized into three primary surface types and one plate-fin type. Design calculations of a recuperator heat transfer matrix using these surfaces enable direct comparison of the recuperator matrix volumes, weights and dimensions. It is concluded that the CC surface has great potential for use in recuperators of the future.

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Rozprawy doktorskie na temat "Corrugated louvred fin surfaces"

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Yong, Kin Ho. "The design, manufacture and performance of corrugated louvred fin heat transfer surfaces". Thesis, University of Brighton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.290439.

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Ng, Eton Yat-Tuen, i eton_ng@hotmail com. "Vehicle engine cooling systems: assessment and improvement of wind-tunnel based evaluation methods". RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2002. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080422.100014.

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The high complexity of vehicle front-end design, arising from considerations of aerodynamics, safety and styling, causes the airflow velocity profile at the radiator face to be highly distorted, leading to potentially reduced airflow volume for heat dissipation. A flow visualisation study showed that the bumper bar significantly influenced the cooling airflow, leading to three-dimensional vortices in its wake and generating an area of relatively low velocity across at least one third of the radiator core. Since repeatability and accuracy of on-road testing are prejudiced by weather conditions, wind-tunnel testing is often preferred to solve cooling airflow problems. However, there are constraints that limit the accuracy of reproducing on-road cooling performance from wind-tunnel simulations. These constraints included inability to simulate atmospheric conditions, limited tunnel test section sizes (blockage effects) and lack of ground effect simulations. The work presented in this thesis involved use of on-road and wind-tunnel tests to investigate the effects of most common constraints present in wind tunnels on accuracy of the simulations of engine cooling performance and radiator airflow profiles. To aid this investigation, an experimental technique for quantifying radiator airflow velocity distribution and an analytical model for predicting the heat dissipation rate of a radiator were developed. A four-hole dynamic pressure probe (TFI Cobra probe) was also used to document flow fields in proximity to a section of radiator core in a wind tunnel in order to investigate the effect of airflow maldistribution on radiator heat-transfer performance. In order to cope with the inability to simulate ambient temperature, the technique of Specific Dissipation (SD) was used, which had previously been shown to overcome this problem.

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Achaichia, A. "The performance of louvred tube-and-fin heat transfer surfaces". Thesis, University of Brighton, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375665.

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Madhavan, Srivatsan. "Review, Design and Computational Study of Some Compact Heat Exchangers". University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511885027497222.

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Książki na temat "Corrugated louvred fin surfaces"

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Achaichia, Abdennacer. The performance of louvred tube-and-plate fin heat transfer surfaces. [Brighton: Brighton Polytechnic, 1987.

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Yong, Kin Ho. The design, manufacture and performance of corrugated louvred fin heat transfer surfaces. 1990.

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Części książek na temat "Corrugated louvred fin surfaces"

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Saha, Sujoy Kumar, Hrishiraj Ranjan, Madhu Sruthi Emani i Anand Kumar Bharti. "Wavy Fin, 3D Corrugated Fin, Perforated Fin, Pin Fin, Wire Mesh, Metal Foam Fin, Packings, Numerical Simulation". W Heat Transfer Enhancement in Plate and Fin Extended Surfaces, 89–135. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20736-6_5.

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Streszczenia konferencji na temat "Corrugated louvred fin surfaces"

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Khan, Tariq Amin, Wei Li, Yan Xiaolong i Zhuo Yang. "Experimental Study on the Thermal-Hydraulic Performance of Louvered Fin and Flat Tube Heat Exchangers". W ASME 2020 Heat Transfer Summer Conference collocated with the ASME 2020 Fluids Engineering Division Summer Meeting and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ht2020-8990.

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Abstract In this study, the air side heat transfer and pressure drop characteristics of flat tube with louvered fins compact heat exchangers have been experimentally investigated. Three samples of heat exchangers, i.e., one without fins, one with flat louver fins and one with corrugated louver fins are studied. The louvers in the present samples have small louver pitch (Lp = 0.8mm) and high louver angle (θl = 37°) due to the space constraints in automotive applications. The performance tests were conducted in a high standard test facility which are composed of an evaporator chamber, condenser chamber and auxiliary units. In our study, only evaporators are tested and hence the condenser section is the same during the tests. Experimental results under the wet surface conditions show that the cooling capacity and pressure drop performances of evaporator with flat louver fins (HX2) is higher than the one with corrugated louver fins (HX3) while the evaporator without fins has the minimum heat transfer due to no interruptions. This can be due to higher number of tubes in the case of HX2 having small tube pitch. However, the overall performance (ratio of heat transfer per unit volume to pressure drop per unit volume) of HX2 is better than HX3 which signifies the importance of corrugated louver fins.

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Tafti, D. K., i J. Cui. "Advances in Computations of Air-Side Heat Transfer in Compact Heat Exchangers". W ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32830.

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The paper describes the computed flow structure and heat transfer in flat tube corrugated multilouvered fin heat exchanger at the fin-tube junction. Three Reynolds numbers, 300, 600 and 1100 are calculated. The junction region is characterized by large flow velocities on the top surface of the fin and a “vortex jet” which develops under the bottom surface. Both of these are highly unsteady at Re = 1100. Their strength and unsteadiness decrease as the Reynolds number decreases. The large induced flow velocities in this region have a big impact on tube heat transfer, increasing it by a factor of 1.75 to 2. In spite of this augmentation, tube heat transfer coefficients are between 2.5 to 3 times smaller that those found on the louver, hence decreasing the overall heat transfer coefficient by 20–25%. Comparison of the modeled geometry with correlations derived from full core experiments show good agreement.

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Perez Reisler, Rafael A., Jorge E. Gonza´lez, Hector M. Sanchez i Luis H. Alva. "Design and Construction of a Compact Air-Cooled Absorption Machine for Solar Energy Applications". W ASME 2004 International Solar Energy Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/isec2004-65097.

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This paper presents a methodical procedure for the design and sizing of a compact, water fired, air-cooled absorption chiller. The proposed compact machine uses Lithium-Bromide/Water as absorbent/refrigerant fluid pair. The machine was designed using a detailed heat transfer analysis for each individual component (i.e. desorber, condenser, absorber and evaporator). The condenser uses conventional fin-tube heat transfer surfaces while the evaporator uses an inner corrugated surface to increase the heat transfer area. The generator has a concentric tube arrangement in which the dilute solution is in the inner section and the heating water flows in the outside section. This arrangement results in a regeneration effect at temperatures close to 75°C which can be easily provided with solar collectors. The absorber and evaporator work together as a single unit. The vapor exiting the evaporator comes into thermal contact with the concentrated LiBr solution that enters the absorber from the top and falls inside the vertical tubes, creating the absorption effect. Moreover, air is cooling the outside surface of the tubes removing the heat released during the absorption process. The evaporator was designed to be a falling film evaporator such that when applying the cooling load, condensed water falling on the evaporator tubes evaporates and rises through the vertical tubes of the absorber. A set of highly efficient fans are used to bring outside air to remove the necessary heat in both the absorber and condenser, respectively. Furthermore, all system components have been constructed and assembled into a working prototype of variable cooling capacity between 10.5 to 17.5 kW having final dimensions equivalent to a volume of 5 m3. The preliminary characterization of the thermal performance of this prototype is presented in the paper with the objective of validating the design methodology.

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