Готові списки джерел за темами / Resistance to enthalpy transfer

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Добірка наукової літератури з теми "Resistance to enthalpy transfer"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Resistance to enthalpy transfer"

LEE, EUL-JONG, JUNG-PYO LEE, HYUN-MIN SIM, and NAE-HYUN KIM. "MODELING AND VERIFICATION OF HEAT AND MOISTURE TRANSFER IN AN ENTHALPY EXCHANGER MADE OF PAPER MEMBRANE." International Journal of Air-Conditioning and Refrigeration 20, no. 03 (2012): 1250015. http://dx.doi.org/10.1142/s2010132512500150.

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In this study, heat and moisture transfer model of an enthalpy exchanger is proposed. With separately measured sorption constant and diffusion coefficient, the model predicts the heat and moisture transfer effectiveness of an enthalpy exchanger. Two sample enthalpy exchangers were tested at a KS condition to verify the model. The model predicts the heat transfer effectiveness within 4%, and the moisture transfer effectiveness within 10%. Pressure drop is predicted within 6%. The spacer fin efficiency for heat transfer was 0.11 to 0.13. The fin efficiency for moisture transfer, however, was neg

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Zhang, L. Z., and J. L. Niu. "Effectiveness Correlations for Heat and Moisture Transfer Processes in an Enthalpy Exchanger With Membrane Cores." Journal of Heat Transfer 124, no. 5 (2002): 922–29. http://dx.doi.org/10.1115/1.1469524.

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The performance correlations for the effectiveness of heat and moisture transfer processes in an enthalpy exchanger with membrane cores are presented. The physical phenomena relevant to the heat and moisture transfer in these devices have been used to develop a novel set of correlations based on the relevant dimensionless parameters. The total enthalpy effectiveness can be calculated from sensible effectiveness, latent effectiveness, and the ratio of latent to sensible energy differences across the unit. Studies show that the sensible effectiveness is a function of NTU, the number of transfer

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Zhai, Yu, Zhikun Ling, Xu Zhao, and Zhifeng Dong. "Effects of Structure Parameters of Gravity-Type Heat Pipe on Heat Transfer Characteristics for Waste Heat Recovery from Mine Return Air." Energies 17, no. 24 (2024): 6495. https://doi.org/10.3390/en17246495.

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In the condition of waste heat recovery from mine return air with a temperature of 20~30 °C and velocity about 4 to 8 m/s, the structure of gravity-type heat pipe with fin increases the heat exchange areas and meanwhile increases the resistance of air flow, which consumes a large amount of main fan power driven by a motor. Furthermore, the resistance of air flow increases greatly with the velocity of the air flow. In this paper, the gravity-type heat pipe with elliptical smooth surface is studied to decrease the resistance and loss of energy of the air flow. In order to obtain the influence of

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Križo, Kamil, Andrej Kapjor, and Michal Holubčík. "Polymer Membranes for Enthalpy Exchangers." Energies 15, no. 16 (2022): 6021. http://dx.doi.org/10.3390/en15166021.

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A membrane-based enthalpy exchanger is a device used for heat and humidity recovery in ventilated buildings. The energy-saving potential of such a device is dependent on the parameters responsible for heat and moisture recovery. The trend is toward composite membranes, which are custom produced, and their parameters can be adjusted for a given application; therefore, the diffusion and sorption characteristics of such membranes are unknown. In order to obtain the values of the water vapor diffusivity of three investigated handmade membranes, a serial resistance model using a Field and Laborator

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Li, Yong An, Xue Lai Liu, Jia Jia Yan, and Teng Xing. "Research on Wet Thermal Recovery Plant Used by Air Conditioning." Advanced Materials Research 424-425 (January 2012): 1155–58. http://dx.doi.org/10.4028/www.scientific.net/amr.424-425.1155.

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Based on the simulation Computational Fluid Dynamics method, in view of air conditioning with wet thermal recovery plant for heat and mass transfer characteristic, establishes air channels in three-dimensional laminar flow and heat transfer, mass transfer coupling process of mathematical physics model, discusses the air conditioning with wet thermal recovery plant air channels in temperature, concentration and pressure parameters such as distribution, application enthalpy efficiency analysis method to the heat transfer performance is evaluated. The results indicate that structure parameters of

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El-Dessouky, H. T. A., A. Al-Haddad, and F. Al-Juwayhel. "A Modified Analysis of Counter Flow Wet Cooling Towers." Journal of Heat Transfer 119, no. 3 (1997): 617–26. http://dx.doi.org/10.1115/1.2824150.

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The paper describes a theoretical investigation for the steady-state counter flow wet cooling tower with modified definitions for both the number of transfer units and the tower thermal effectiveness. The modified number of transfer units is dependent on both air and water heat capacity. The effectiveness is defined by the tower cooling range and the approach to equilibrium. A new expression relating the tower effectiveness to the modified number of transfer units and the capacity rate ratio has been developed. The model considered the resistance to heat transfer in the water film, the nonunit

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Shishatskii, Y. I., S. A. Nickel, S. A. Tolstov, I. A. Avcinov, A. A. Derkanosova, and A. E. Emelyanov. "Heat transfer mechanisms in cooling towers (theory and calculation methods)." Proceedings of the Voronezh State University of Engineering Technologies 86, no. 1 (2024): 31–37. https://doi.org/10.20914/2310-1202-2024-1-31-37.

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Cooling towers are high-intensity mixing heat exchangers. In them, heat exchange occurs at direct contact (contact) of heat carriers, i.e. in heat exchangers there is no thermal resistance of the wall. When circulating water is cooled by air, part of the heat is transferred due to surface evaporation of water - transformation of water into vapor with subsequent transfer of vapor by diffusion into the air stream. The other part is due to the temperature difference between water and air, i.e. heat transfer by contact (conduction and convection). Heat transfer by direct contact between air and in

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Kurose, Ryoichi, Naohisa Takagaki, Atsushi Kimura, and Satoru Komori. "Direct numerical simulation of turbulent heat transfer across a sheared wind-driven gas–liquid interface." Journal of Fluid Mechanics 804 (September 13, 2016): 646–87. http://dx.doi.org/10.1017/jfm.2016.554.

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Turbulent heat transfer across a sheared wind-driven gas–liquid interface is investigated by means of a direct numerical simulation of gas–liquid two-phase turbulent flows under non-breaking wave conditions. The wind-driven wavy gas–liquid interface is captured using the arbitrary Lagrangian–Eulerian method with boundary-fitted coordinates on moving grids, and the temperature fields on both the gas and liquid sides, and the humidity field on the gas side are solved. The results show that although the distributions of the total, latent, sensible and radiative heat fluxes at the gas–liquid inter

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Gallardo, Andres, and Umberto Berardi. "A simple method for validating a simulation model of a radiant ceiling panel with thermal energy storage." Journal of Physics: Conference Series 2069, no. 1 (2021): 012119. http://dx.doi.org/10.1088/1742-6596/2069/1/012119.

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Abstract This paper focuses on validating a simulation model of a radiant ceiling panel (RCP) incorporating phase change materials (PCM) for heating and cooling applications in buildings. The development of an RCP with thermal energy storage capacity aims to encourage high thermal mass radiant systems in existing buildings to replace the traditional all-air HVAC system. First, a heat flow meter (HFM) is used to perform enthalpy measurements at a product scale (macro-encapsulated PCM). Then, a small test chamber is constructed to measure the dynamic thermal performance of an RCP with PCM under

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Mahir, Maha, Anas El Maakoul, Ismail Khay, Said Saadeddine, and Mohamed Bakhouya. "An Investigation of Heat Transfer Performance in an Agitated Vessel." Processes 9, no. 3 (2021): 468. http://dx.doi.org/10.3390/pr9030468.

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Agitated vessels (or mechanically stirred reactors) are heat exchange devices that are most widely used in many chemical and biochemical process industries, such as anaerobic digestion process. The mixing and heat transfer performances in these vessels are of crucial importance for increasing the energy efficiency in both batch and continuous processes. In this paper, a series of experiments were conducted to investigate heat transfer performance in agitated vessels for various configurations. In fact, this study examines the effects of heat transfer geometry (wall jacket and helical coils), h

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Дисертації з теми "Resistance to enthalpy transfer"

Tseitlin, Musii, and Valentina Raiko. "Ratio between heat and mass transfer when concentrating the solution in a cooling tower." Thesis, Lviv Polytechnic National University, 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42106.

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The ratio between the intensity of the mass transfer in gas and the heat transfer in liquid during the evaporative solution concentration has been studied. It was determined that the share of liquid resistance in the total resistance to enthalpy transfer increases in the temperature range from 30 to 50°C by almost 2 times, and reaches 40 %. The technique has been developed for the separate determination of the mass transfer coefficients in gas and heat transfer in liquid. Досліджено співвідношення між інтенсивністю масопереносу в газі та передачею тепла в рідині під час концентрації випарно

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Jeong, Dahai. "Laboratory Measurements of the Moist Enthalpy Transfer Coefficient." Scholarly Repository, 2008. http://scholarlyrepository.miami.edu/oa_theses/145.

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The enthalpy (sensible and latent heat) exchange processes within the surface layers at an air-water interface have been examined in 15-m wind-wave tunnel at the University of Miami. Measurements yielded 72 mean values of fluxes and bulk variables in the wind speed (referred to 10 m) range form 0.6 to 39 m/s, covering a full range of aerodynamic conditions from smooth to fully rough. Meteorological variables and bulk enthalpy transfer coefficients, measured at 0.2-m height, were adjusted to neutral stratification and 10-m height following the Monin-Obukhov similarity approach. The ratio of the

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Staton, JoAnna Christen II. "Heat and Mass Transfer Characteristics of Desiccant Polymers." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/9785.

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Desiccant-enhanced air conditioning equipment has exhibited both the capability to improve humidity control and the potential to save energy costs by lowering the latent energy requirement of the supply air stream. The resulting increasing popularity of desiccant-enhanced air conditioning systems has sparked new interest in the search for a better, more efficient desiccant material. The ultimate goal of this research was to develop a material that, when applied to an existing air-to-air heat exchanger, would achieve the necessary heat and mass transfer in a single process, thus transforming a

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Maza, William Antonio. "Reaction Enthalpy and Volume Profiles for Excited State Reactions Involving Electron Transfer and Proton-Coupled Electron Transfer." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4539.

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Electron transfer, ET, and proton-coupled electron transfer, PCET, reactions are central to biological reactions involving catalysis, energy conversion and energy storage. The movement of electrons and protons in either a sequential or concerted manner are coupled in a series of elementary reaction steps in respiration and photosynthesis to harvest and convert energy consumed in foodstuffs or by absorption of light into high energy chemi-cal bonds in the form of ATP. These electron transfer processes may be modulated by conformational dynamics within the protein matrix or at the protein-protei

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Mondragon, Camacho Ricardo. "Non-physical enthalpy method for phase change modelling in the solidification process." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/nonphysical-enthalpy-method-for-phase-change-modelling-in-the-solidification-process(2ab7597c-eaaa-44d8-abb8-0bf49e413c76).html.

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This research is concerned with the development of a mathematical approach for energy and mass transport in solidification modelling involving a control volume (CV) technique and finite element method (FEM) and incorporating non-physical variables in its solution. The former technique is used to determine an equivalent capacitance to describe energy transport whilst the latter technique provides temperatures over the material domain. The numerical solution of the transport equations is achieved by the introduction of two concepts, i.e. weighted transport equations and non-physical variables. T

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Alamaro, Moshe 1948. "Wind wave tank for experimental investigation of momentum and enthalpy transfer from the ocean surface at high wind speed." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/51587.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2001. Includes bibliographical references (leaves 77-79). Thermodynamic analysis and numerical modeling of hurricane intensity has shown that its is controlled by the enthalpy transfer from the ocean surface and by drag. Direct measurements of drag, evaporation, and sensible heat transfer are not easily performed on the high seas. Therefore, a wind wave tank has been constructed in which a few aspects of a tropical storm are simulated. The air velocity inside the annular tank is com

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Stanczak-Mrozek, Kinga Izabela. "Antimicrobial resistance gene transfer between MRSA from colonized patients." Thesis, St George's, University of London, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687072.

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Methicillin-resistant Staphylococcus aureus (MRSA) are opportunistic commensal bacteria that are evolving to become increasingly resistant to antimicrobial agents. Resistance is due to acquisition of resistance genes encoded by mobile genetic elements (MGEs) but little is known about the gene transfer and conditions influencing this process in clinically important MRSA isolates. In this thesis I showed that populations of MRSA colonizing isolates vary phenotypically in antimicrobial resistance (AMR) and genotypically in MGE profiles. A potential mechanism of horizontal gene transfer (HGT) in c

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Wang, Lin. "Mass Transfer and GDL Electric Resistance in PEM Fuel Cells." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/486.

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Many modeling studies have been carried out to simulate the current distribution across the channel and shoulder direction in a proton exchange membrane (PEM) fuel cell. However the modeling results do not show agreement on the current density distribution. At the same time, no experimental measurement result of current density distribution across the channel and the shoulder direction is available to testify the modeling studies. Hence in this work, an experiment was conducted to separately measure the current densities under the channel and the shoulder in a PEM fuel cell by using the specia

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Barbosa, Teresa Maria Leite Martins. "Tetracycline resistance transfer among obligate anaerobes from the ruminant gut." Thesis, University of Aberdeen, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286850.

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The main aim of this work was to investigate the nature, distribution and transmissibility of tetracycline resistance (TcR) genes among ruminant anaerobic bacteria. Two TcR rumen strains of Butyrivibrio fibrisolvens, 1.230 and 1.23, were able to transfer the resistance phenotype to the type strain, 2221R although a third TcR strain, 1.210, could not. PCR amplification of 16S rDNA sequences showed that the three isolates were phylogenetically distinct from the recipient strain, but related to each other. Hybridisation work suggested the presenc

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Barnard, Danielle. "Conjugative Transfer Pathways of High-Level Mupirocin Resistance and Conjugative Transfer Genes in Staphylococcus." Digital Commons @ East Tennessee State University, 2006. https://dc.etsu.edu/etd/2188.

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To combat widespread infections caused by Staphylococcus aureus, mupirocin was introduced at the Veterans Affairs Medical Center, Mountain Home, Tennessee. Soon after introduction, high-level mupirocin-resistance emerged. The rapid emergence was hypothesized to be due to conjugative transfer of the mupA resistance gene from S. epidermidis to S. aureus. Results have shown that transfer of high-level mupirocin-resistance from S. aureus donors commonly occurs. However, transfer from naturally-occurring S. epidermidis donors was not attainable. Staphylococcus epidermidis transconjugants, how

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Книги з теми "Resistance to enthalpy transfer"

B, Levy Stuart, Novick Richard P. 1932-, Cold Spring Harbor Laboratory, United States. Environmental Protection Agency., and National Science Foundation (U.S.), eds. Antibiotic resistance genes: Ecology, transfer, and expression. Cold Spring Harbor Laboratory, 1986.

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Salyers, Abigail A. Antibiotic resistance transfer in the mammalian intestinal tract. Springer, 1995.

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Lai, Chan Ji. Flow resistance, discharge capacity and momentum transfer in smooth compound closed ducts. University of Birmingham, 1986.

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Pioro, I. L. Heat transfer and hydraulic resistance at supercritical pressures in power engineering applications. ASME Press, 2007.

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Barrington, Frank. Conjugative transfer of high-level gentamicin resistance in clinical and community isolates of enterococci. The Author], 1993.

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United States. National Aeronautics and Space Administration., ed. Effects of the cooling system parameters on heat transfer and performance of the PAFC stack during transient operation. Cleveland State University, 1992.

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Thomas, Barbara Ruth. Guidelines for seed transfer of western white pine in B.C. based on frost hardiness. Forestry Canada, 1993.

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Lai, Yan-ho. Legal Resistance under Authoritarianism. Amsterdam University Press, 2025. https://doi.org/10.5117/9789048558438.

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Legal Resistance Under Authoritarianism: The Struggle for the Rule of Law in Hong Kong examines the decline of Hong Kong’s rule of law under China’s expanding authoritarian influence. While the imposition of the National Security Law in 2020 is seen as a turning point, this book argues that threats to Hong Kong’s rule of law began with the 1997 sovereignty transfer. Drawing on comprehensive fieldwork, Yan-ho Lai explores the tensions between legal profession, political authorities and the state’s broader authoritarian project between the 2014 Umbrella Movement and the 2019 Anti-extradition Bil

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Amedeo, Premoli, ed. Tables for active filter design: Based on Cauer MCPER functions. Artech House, 1985.

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Частини книг з теми "Resistance to enthalpy transfer"

Tacke, K. H., and Α. Harnisch. "Finite Difference Enthalpy Methods for Dendritic Growth." In Heat Transfer, edited by L. C. Wrobel and C. A. Brebbia. De Gruyter, 1991. http://dx.doi.org/10.1515/9783110853209-012.

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Shang, Joseph J. S. "Radiative Heat Transfer." In Classic and High-Enthalpy Hypersonic Flows. CRC Press, 2023. http://dx.doi.org/10.1201/9781003212362-13.

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Gooch, Jan W. "Resistance Transfer Factor (RTF)." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_14682.

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Saharan, Govind Singh, Naresh K. Mehta, and Prabhu Dayal Meena. "Transfer of Disease Resistance." In Genomics of Crucifer’s Host-Resistance. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0862-9_4.

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Gong, Z. X., Y. F. Zhang, and A. S. Mujumdar. "An Efficient Finite Element Procedure for the Solution of Enthalpy Model for Phase Change Heat Conduction Problems." In Heat Transfer, edited by L. C. Wrobel and C. A. Brebbia. De Gruyter, 1991. http://dx.doi.org/10.1515/9783110853209-007.

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Kayser, F. H., and B. Berger-Bächi. "Transposon Transfer of Drug Resistance." In Perspectives in Antiinfective Therapy. Vieweg+Teubner Verlag, 1989. http://dx.doi.org/10.1007/978-3-322-86064-4_15.

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Kayser, F. H., and B. Berger-Bächi. "Transposon Transfer of Drug Resistance." In Perspectives in Antiinfective Therapy. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-46666-3_16.

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Roy, Paul H. "Genetic Mechanisms of Transfer of Drug Resistance." In Antimicrobial Drug Resistance. Humana Press, 2009. http://dx.doi.org/10.1007/978-1-59745-180-2_5.

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Roy, Paul H., and Sally R. Partridge. "Genetic Mechanisms of Transfer of Drug Resistance." In Antimicrobial Drug Resistance. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-46718-4_5.

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Sasoh, A., X. Chang, T. Murayama, and T. Fujiwara. "Radiative heat transfer from non-equilibrium high-enthalpy shock layers." In Shock Waves. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77648-9_113.

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Тези доповідей конференцій з теми "Resistance to enthalpy transfer"

Mittal, Garima, Imran Bhamji, Francesco Fanicchia, and Shiladitya Paul. "Development of Solution Precursor Plasma Spray TiO2/Al2O3 Composite Coatings for Heat Exchanger Application." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16304.

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Abstract Surface modification of the metal components involved in heat transfer is one of the passive methods used to enhance their heat transfer efficiency. Coatings with micro- or nano-scale features are widely employed to modify surfaces due to their enhanced surface area, which increases the number of boiling nucleation sites, leading to the generation of a higher number of bubbles. In geothermal power generation, due to the aggressive nature of the working fluid and chemistry of the geothermal brine, ceramic coatings are preferred. Along with having good compressive strength and hardness,

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Krishnan, Shankar, Jayathi Y. Murthy, and Suresh V. Garimella. "A Two-Temperature Model for Solid/Liquid Phase Change in Metal Foams." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56337.

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Transient solid/liquid phase change occurring in metal foams impregnated with phase change material (PCM) is investigated. Natural convection in the melt is considered. Volume-averaged mass and momentum equations are employed, with the Brinkman-Forchheimer extension to the Darcy law to model the porous resistance. Owing to the difference in the thermal diffusivities between the metal foam and the PCM, local thermal equilibrium between the two is not assured. Assuming equilibrium melting at the pore scale, separate volume-averaged energy equations are written for the solid metal foam and the PC

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Naoua, S. B., M. El Ganaoui, P. Fauchais, and H. Sammouda. "Parametric Study of the Transient Cooling During Suspension D. C. Plasma Spraying of Stabilized Zirconia." In ITSC2005, edited by E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2005. http://dx.doi.org/10.31399/asm.cp.itsc2005p1311.

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Abstract A numerical study has been conducted on yttria stabilized zirconia and molybdenum splat cooling taking into account the effects of various parameters. In particular, the effect of the splat thickness, the splat/substrate interface thermal resistance, the latent heat of solidification and the substrate initial temperature on the solidification occurrence and kinetics have been studied. A two-dimension model of heat transfer taking into account the phase change during rapid solidification with an enthalpy formulation has been used for these calculations.

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Hawkes, Grant, and Russell Jones. "CFD Model of a Planar Solid Oxide Electrolysis Cell: Base Case and Variations." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32310.

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A three-dimensional computational fluid dynamics (CFD) model has been created to model high-temperature steam electrolysis in a planar solid oxide electrolysis cell (SOEC). The model represents a single cell, as it would exist in an electrolysis stack. Details of the model geometry are specific to a stack that was fabricated by Ceramatec, Inc. and tested at the Idaho National Laboratory. Mass, momentum, energy, and species conservation and transport are provided via the core features of the commercial CFD code FLUENT. A solid-oxide fuel cell (SOFC) module adds the electrochemical reactions and

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Fronk, Brian M., and Srinivas Garimella. "Heat Transfer and Pressure Drop During Condensation of Ammonia in Microchannels." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75265.

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An experimental investigation of condensation heat transfer and pressure drop of ammonia flowing through a single, circular, microchannel (D = 1.435 mm) was conducted. The use of ammonia in thermal systems is attractive due to its high latent heat, favorable transport properties, zero ozone depletion (ODP), and zero global warming potential (GWP). At the same time, microchannel condensers are also being adopted to increase heat transfer performance to reduce component size and improve energy efficiency. While there is a growing body of research on condensation of conventional refrigerants (i.e

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Wang, Han, Qincheng Bi, Linchuan Wang, Haicai Lv, and Laurence K. H. Leung. "Experimental Study of Heat Transfer to Supercritical Pressure Water Flowing in a 2×2 Rod Bundle." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30313.

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An experiment has recently been performed at Xi’an Jiaotong University to study the wall temperature and pressure drop at supercritical pressures with upward flow of water inside a 2×2 rod bundle. A fuel-assembly simulator with four heated rods was installed inside a square channel with rounded corner. The outer diameter of each heated rod is 8 mm with an effective heated length of 600 mm. Experimental parameters covered the pressure of 23–28 MPa, mass flux of 350–1000 kg/m2s and heat flux on the rod surface of 200–1000 kW/m2. According to the experimental data, it was found that the circumfer

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deBock, Peter, Rinaldo Miorini, Cathleen Hoel, Darin Sharar, and Bryan Whalen. "Experimental Characterization of Heat Transfer and Thermal Energy Storage Capability Using Swirling Two-Phase Flow in the Package Integrated Cyclone COoler (PICCO)." In ASME 2020 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipack2020-2606.

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Abstract The increasing demand for high power density wide-bandgap power electronics has propelled heat transfer research leading to a constant increase in the thermal performance of cold plates and heat sinks. Most of this research has focused on reducing thermal resistance of the package which can have a detrimental effect on transient thermal performance if thermal capacitance is reduced. In order to provide both a low thermal resistance and a higher thermal capacitance integrated into the package and near the thermal junction, a new cold plate called the Package Integrated Cyclone COoler (

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Sun, Ming, Yingzi Kang, Mengmeng Wang, and Wen-Bin Shangguan. "Research on the Flow and Heat Exchange Performance of the Chiller for Electric Vehicles." In WCX SAE World Congress Experience. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-2412.

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<div class="section abstract"><div class="htmlview paragraph">A set of enthalpy difference test equipment is set up to test flow and heat exchange performance of chillers. The empirical correlations for the convective heat transfer coefficients on the coolant side and the refrigerant side are obtained by fitting the test data, and a two-particle lumped parameter model of the chiller is established. Based on this, the heat exchange performance of the chiller under different operating conditions is given. The effects of herringbone corrugated plate parameters, including angle, pitch,

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Buonomo, Bernardo, Maria Rita Golia, Oronzio Manca, Sergio Nardini, and Renato Elpidio Plomitallo. "Convergent and Divergent Shell and Tube TES Partially Filled With PCM and Metal Foam." In ASME 2024 Heat Transfer Summer Conference collocated with the ASME 2024 Fluids Engineering Division Summer Meeting and the ASME 2024 18th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/ht2024-131196.

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Abstract The ongoing European energy crisis and the imperative to reduce carbon emissions have driven the exploration of energy storage systems. This research focuses on latent heat thermal energy storage systems (LTES). LTESs, utilizing phase change materials (PCMs) combined with metal foams, offer advantages over sensible thermal energy storage systems. Metal foams enhance the thermal conductivity of PCMs, creating a system with a fast-absorbing energy zone defined by low thermal resistance. The study investigates a vertical shell and tube geometry with a non-constant internal tube section,

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Randle, Lindsey V., and Brian M. Fronk. "Investigation of Buoyancy Effects in Asymmetrically Heated Near-Critical Flows of Carbon Dioxide in Horizontal Microchannels Using Infrared Thermography." In ASME 2021 Heat Transfer Summer Conference collocated with the ASME 2021 15th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/ht2021-63004.

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Abstract In this study, we use infrared thermography to calculate local heat transfer coefficients of top and bottom heated flows of near-critical carbon dioxide in an array of parallel microchannels. These data are used to evaluate the relative importance of buoyancy for different flow arrangements. A Joule heated thin wall made of Inconel 718 applies a uniform heat flux either above or below the horizontal flow. A Torlon PAI test section consists of three parallel microchannels with a hydraulic diameter of 923 μm. The reduced inlet temperature (TR = 1.006) and reduced pressure (PR = 1.03) ar

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Звіти організацій з теми "Resistance to enthalpy transfer"

Rich, J. W., Walter R. Lempert, and Igor V. Adamovich. Energy Transfer Processes Among Electrons and Vibrationally Excited Air Species in High Enthalpy Flows. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada478735.

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Haus, Brian K., and Mark A. Donelan. Enthalpy Flux in Extreme Winds and the Roles of Sensible, Latent and Spray Heat Transfer Processes. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada573403.

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Zelcer, Aaron, and George Bates. Asymmetric hybridization in crop plants: studies on cellular and genetic mechanisms and transfer of viral resistance. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604276.bard.

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Liu, Li, Zhenyan Wang, Yun He, et al. Trend and prevalence of transmitted drug resistance (TDR) to integrase-strand transfer inhibitors (INSTIs) and drug resistance mutations (DRMs) among HIV-1 patients in China: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2025. https://doi.org/10.37766/inplasy2025.3.0113.

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Gera, Abed, Abed Watad, P. Ueng, et al. Genetic Transformation of Flowering Bulb Crops for Virus Resistance. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7575293.bard.

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Objectives. The major aim of the proposed research was to establish an efficient and reproducible genetic transformation system for Easter lily and gladiolus using either biolistics or Agrobacterium. Transgenic plants containing pathogen-derived genes for virus resistance were to be developed and then tested for virus resistance. The proposal was originally aimed at studying cucumber mosaic virus (CMV) resistance in plants, but studies later included bean yellow mosaic virus (BYMV). Monoclonal antibodies were to be tested to determine their effectiveness in interning with virus infection and v

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Hansen, Peter J., and Amir Arav. Embryo transfer as a tool for improving fertility of heat-stressed dairy cattle. United States Department of Agriculture, 2007. http://dx.doi.org/10.32747/2007.7587730.bard.

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The overall objective of the current proposal is to develop procedures to improve the pregnancy rate achieved following transfer of fresh or cryopreserved embryos produced in the laboratory into heat-stress recipients. The overall hypothesis is that pregnancy rate in heat-stressed lactating cows can be improved by use of embryo transfer and that additional gains in pregnancy rate can be achieved through development of procedures to cryopreserve embryos, select embryos most likely to establish and maintain pregnancy after transfer, and to enhance embryo competence for post-transfer survival thr

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Sink, Ken, Shamay Izhar, and Abraham Nachmias. Asymmetric Somatic Hybridization: Developing a Gene Transfer System for Solanaceous Vegetable Crops. United States Department of Agriculture, 1996. http://dx.doi.org/10.32747/1996.7613010.bard.

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Highly asymmetric somatic hybrid plants were obtained by PEG/DMSO fusion of gamma irradiated (100, 250, 7500 and 1000 Gy) protoplasts of a (KmR-) interspecific hybrid Lycopersicon esculentum x L. pennellii (EP) with protoplasts of eggplant (E). Somatic hybrid calli were selected based on kanamycin resistance and verified by PCR of the NptII gene, RAPD's and Southern's using potato rDNA pTHG2 probes. Flow cytometry indicated all hybrid calli that did not regenerate shoots were 5-9n. Three asymmetric plants regenerated only from callus close to 4n and such calli oly occurred when EP received 100

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Perl, Avichai, Bruce I. Reisch, and Ofra Lotan. Transgenic Endochitinase Producing Grapevine for the Improvement of Resistance to Powdery Mildew (Uncinula necator). United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7568766.bard.

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The original objectives are listed below: 1. Design vectors for constitutive expression of endochitinase from Trichoderma harzianum strain P1. Design vectors with signal peptides to target gene expression. 2. Extend transformation/regeneration technology to other cultivars of importance in the U.S. and Israel. 3. Transform cultivars with the endochitinase constructs developed as part of objective 1. A. Characterize foliar powdery mildew resistance in transgenic plants. Background of the topic Conventional breeding of grapevines is a slow and imprecise process. The long generation cycle, large

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Fuchs, Marcel, Ishaiah Segal, Ehude Dayan, and K. Jordan. Improving Greenhouse Microclimate Control with the Help of Plant Temperature Measurements. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604930.bard.

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A model of the energy balance of a transpiring crop in a greenhouse was developed in a format suitable for use in climate control algorithms aimed at dissipating excess heat during the warm periods. The model's parameters use external climatic variables as input. It incorporates radiation and convective transfer functions related to the operation of control devices like shading screens, vents, fans and enhanced evaporative cooling devices. The model identified the leaf boundary-layer resistance and the leaf stomatal and cuticular resistance as critical parameters regulating the temperature of

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Sessa, Guido, та Gregory Martin. MAP kinase cascades activated by SlMAPKKKε and their involvement in tomato resistance to bacterial pathogens. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7699834.bard.

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The research problem: Pseudomonas syringae pv. tomato (Pst) and Xanthomonas campestrispv. vesicatoria (Xcv) are the causal agents of tomato bacterial speck and spot diseases, respectively. These pathogens colonize the aerial parts of the plant and cause economically important losses to tomato yield worldwide. Control of speck and spot diseases by cultural practices or chemicals is not effective and genetic sources of resistance are very limited. In previous research supported by BARD, by gene expression profiling we identified signaling components involved in resistance to Xcvstrains. Follow u

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