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Готові списки джерел за темами / Contact heat and mass transfer / Статті в журналах

Статті в журналах з теми "Contact heat and mass transfer"

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Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Phattaranawik, Jirachote, and Ratana Jiraratananon. "Direct contact membrane distillation: effect of mass transfer on heat transfer." Journal of Membrane Science 188, no. 1 (June 2001): 137–43. http://dx.doi.org/10.1016/s0376-7388(01)00361-1.

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2

Brauner, N., D. Moalem Maron, and S. Sideman. "Heat and mass transfer in direct contact hygroscopic condensation." Wärme- und Stoffübertragung 21, no. 4 (July 1987): 233–45. http://dx.doi.org/10.1007/bf01004026.

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3

Madyshev, Ilnur N., Oksana S. Dmitrieva, and Andrey V. Dmitriev. "Determination of heat-mass transfer coefficients within the apparatuses with jet-film contact devices." MATEC Web of Conferences 194 (2018): 01013. http://dx.doi.org/10.1051/matecconf/201819401013.

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Анотація:

One of the ways of intensifying the heat and mass transfer processes in gas-fluid systems is designing jet-film contact devices with a developed surface of phase contact at high flow velocities. A contact jet-film device has been developed. The results of numerical investigation of the operation of this device are presented. There were determined the coefficients of heat transfer to the air from the surface of liquid inside of the drain cup of contact device. The criterion equations of convective heat transfer for engineering calculations of jet-film contact devices is corrected.

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4

Fair, James R. "Direct Contact Gas-Liquid Heat Exchange for Energy Recovery." Journal of Solar Energy Engineering 112, no. 3 (August 1, 1990): 216–22. http://dx.doi.org/10.1115/1.2930482.

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Анотація:

Energy from hot gas discharge streams can be recovered by transfer directly to a coolant liquid in one of several available gas-liquid contacting devices. The design of the device is central to the theme of this paper, and experimental work has verified that the analogy between heat transfer and mass transfer can be used for design purposes. This enables the large amount of available mass transfer data for spray, packed, and tray columns to be used for heat transfer calculations. Recommended methods for designing the several types of gas-liquid contacting device are summarized.

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5

OLIVER, J. M., J. P. WHITELEY, M. A. SAXTON, D. VELLA, V. S. ZUBKOV, and J. R. KING. "On contact-line dynamics with mass transfer." European Journal of Applied Mathematics 26, no. 5 (August 10, 2015): 671–719. http://dx.doi.org/10.1017/s0956792515000364.

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Анотація:

We investigate the effect of mass transfer on the evolution of a thin, two-dimensional, partially wetting drop. While the effects of viscous dissipation, capillarity, slip and uniform mass transfer are taken into account, other effects, such as gravity, surface tension gradients, vapour transport and heat transport, are neglected in favour of mathematical tractability. Our focus is on a matched-asymptotic analysis in the small-slip limit, which reveals that the leading-order outer formulation and contact-line law depend delicately on both the sign and the size of the mass transfer flux. This leads, in particular, to novel generalisations of Tanner's law. We analyse the resulting evolution of the drop on the timescale of mass transfer and validate the leading-order predictions by comparison with preliminary numerical simulations. Finally, we outline the generalisation of the leading-order formulations to prescribed non-uniform rates of mass transfer and to three dimensions.

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6

Aliev, E. K., V. V. Volodin, V. V. Golub, A. Yu Mikushkin, G. G. Timerbaev, and O. V. Chagin. "Comparative Heat and Mass Transfer Tests of Structured Packings with Film and Droplet Flow." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 4 (85) (August 2019): 4–21. http://dx.doi.org/10.18698/1812-3368-2019-4-4-21.

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The paper focuses on comparative studies of heat and mass transfer and hydraulic characteristics of two structured packings which provide heat and mass transfer of contacting media in the film flow of liquid Mellapak 250.X and with fluid dispersion in the gas volume PVN.22. The experiments were carried out in a heat-mass exchange column of 400 mm in diameter and of 1 m in height of a packed bed. The method of evaporative cooling of water in the air flow was adapted to obtain heat and mass exchange characteristics of packed contact devices. Findings of research show the effect of irrigation density and gas flow on heat and mass transfer and hydraulic characteristics of packings which provide heat and mass transfer of contacting media in film and droplet flows. A criterion for estimating the efficiency of contact devices is proposed.

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7

Qtaishat, M., T. Matsuura, B. Kruczek, and M. Khayet. "Heat and mass transfer analysis in direct contact membrane distillation." Desalination 219, no. 1-3 (January 2008): 272–92. http://dx.doi.org/10.1016/j.desal.2007.05.019.

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8

Sadykov, R. A., and L. R. Sadikova. "BOUND MOISTURE REMOVAL: HEAT AND MASS TRANSFER IN CONTACT DRYING." Drying Technology 16, no. 8 (January 1998): 1627–47. http://dx.doi.org/10.1080/07373939808917483.

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9

Ajaev, Vladimir S., and Oleg A. Kabov. "Heat and mass transfer near contact lines on heated surfaces." International Journal of Heat and Mass Transfer 108 (May 2017): 918–32. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2016.11.079.

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10

Voinov, Nikolai A., Anastasiya V. Bogatkova, and Denis A. Zemtsov. "Intensification of Heat and Mass Transfer in a Diabatic Column with Vortex Trays." ChemEngineering 6, no. 2 (April 12, 2022): 29. http://dx.doi.org/10.3390/chemengineering6020029.

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Анотація:

We used vortex contact devices that we developed and investigated to make a new design of an alcohol diabatic distillation column with heat exchange pipes (as the reflux condenser) passing through concentrating section trays. In the column, ascending vapors partially condensed on the surface of vertically installed heat exchange tubes, forming a reflux. The reflux was then mixed with the draining liquid flow in the vortex contact devices placed on the trays. Heat was removed from the column through the boiling of the draining water film along the inner surface of the heat exchange pipes. We compared both diabatic and adiabatic columns fitted with the developed vortex contact devices on the trays. The proposed innovative contact system allows increasing productivity, reducing column dimensions and steam- and heat-transfer medium consumption, and increasing separation efficiency. Dependences for calculating the gas content, hydraulic resistance, and interphase surface required for designing the vortex contact devices of the proposed unit trays are presented.

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11

Balázs, T., M. Örvös, and L. Tömösy. "Heat and Mass Transfer in an Agitated Contact-Convective Heated Dryer." Food and Bioproducts Processing 85, no. 3 (September 2007): 291–97. http://dx.doi.org/10.1205/fbp07026.

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12

Kurokawa, Hideaki, Toshio Sawa, and Kenji Mitani. "Characteristics of Heat and Mass Transfer in Direct-Contact Membrane Distillation." KAGAKU KOGAKU RONBUNSHU 17, no. 6 (1991): 1168–74. http://dx.doi.org/10.1252/kakoronbunshu.17.1168.

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13

Migunov, V. V. "Problem of heat and mass transfer during short-time phase contact." Journal of Engineering Physics 60, no. 6 (June 1991): 731–39. http://dx.doi.org/10.1007/bf00871512.

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14

Fomin, S. A. "Mathematical model of heat and mass transfer processes in contact melting." Journal of Soviet Mathematics 61, no. 6 (October 1992): 2426–38. http://dx.doi.org/10.1007/bf01100577.

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15

Ertas, A., E. E. Anderson, and S. Kavasogullari. "Comparison of Mass and Heat Transfer Coefficients of Liquid-Desiccant Mixtures in a Packed Column." Journal of Energy Resources Technology 113, no. 1 (March 1, 1991): 1–6. http://dx.doi.org/10.1115/1.2905774.

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Анотація:

In order to analyze the performance of packed columns for dehumidification processes, calculation of the mass and heat transfer coefficients of the packing material used in the column is necessary. This paper is concerned with the interface transfer of heat and mass when air is brought into contact with the liquid desiccant mixtures. A theoretical study of heat and mass transfer analysis in an air-desiccant dehumidification contact system (packed column) employing liquid-desiccants, namely calcium chloride (CaCl2), lithium chloride (LiCl), and a new liquid-desiccant mixture (Cost-Effective Liquid Desiccant, CELD) consisting of 50 percent lithium chloride and 50 percent calcium chloride is studied. Mass and heat transfer coefficients for the gas and liquid phase, by use of 0.5-in., 1-in., 1.5-in., and 2-in. ceramic Rasching rings, are calculated. The findings for the three liquid desiccants are compared and discussed.

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16

Eljan Bayramli, Qasim Mammadov. "EFFECT OF KEROSENE MASS FLOW RATE AND AVERAGE TEMPERATURE IN DIRECT CONTACT HEAT EXCHANGER." ETM - Equipment, Technologies, Materials 09, no. 01 (January 22, 2022): 57–68. http://dx.doi.org/10.36962/etm0901202257.

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Industrial plants are huge consumers of energy, these plants are installing heat exchangers in an effort to reduce energy consumption, and so improve operating efficiencies. Limited numbers of experimental and numerical investigations have dealt with the parameters affecting the heat transfer aspects in single phase direct contact heat exchangers which may be selected for their high thermal efficiency and minimum capital investment. In oil refineries energy from hot temperature oil streams can be recovered by transfer directly to a cheap coolant liquid in liquid-liquid direct contact heat exchangers. The heat recovered from these heat exchangers has different applications including preheating boiler feed water and preheating wash water. Heat recovery from hot temperature refinery products using direct contact heat exchanger throughout a theoretical phenomenological study is central to the theme of this paper. Kerosene-water system has been chosen. The effect of the heating fluid inlet temperature (65-97.50)°C, and mass flow rate (25 to 45) kg/s on direct contact heat exchanger design parameters and heat transfer characteristics were investigated theoretically throughout nine cases. Correlations of heat recovered from the system as well as design and operating characteristics of the heat exchanger were estimated. Increasing kerosene flow rate found to associate directly with increasing the contact surface area, number of plates, number of channels per pass and pressure drop, while when the heat exchanger is designed to operates at high kerosene inlet temperature, big heat exchangers with large areas, high number of plates and channels per pass are needed for efficient heat exchanger performance. Optimization and modeling the effect of kerosene operating variables on heat recovered was conducted using Response Surface Methodology. The results showed that an optimum heat recovery value of 6.8782 megawatt could be achieved for kerosene optimum inlet temperature (91.82°C), and mass flow rate (50.11 kg/s). Keywords: direct contact heat exchanger; kerosene and water system, kerosene mass flow rate and inlet temperature.

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17

Dmitriev, A. V., A. I. Khafizova, and O. S. Dmitrieva. "Jet-film contact devices for heat and mass transfer processes in heat power engineering." IOP Conference Series: Materials Science and Engineering 552 (June 25, 2019): 012002. http://dx.doi.org/10.1088/1757-899x/552/1/012002.

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18

Pushnov, A. S., A. S. Sokolov, and M. M. Butrin. "Methods of intensification of the process of heat and mass transfer in column apparatus with contact devices." Izvestiya MGTU MAMI 7, no. 1-4 (July 10, 2013): 237–42. http://dx.doi.org/10.17816/2074-0530-67909.

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Анотація:

The article gives a classification of intensification the methods of heat- and mass transfer. There are examined some advantages and disadvantages of nozzle and poppet pin devices. The method of influence analysis of nozzle form and construction on heat-, mass transfer process is provided. There is also described the effect of different parameters on the choice of the design of the nozzle. In article there were compared the most common in industry types of bulk and regular nozzles. An alternative method of intensification of heat and mass transfer finally was proposed.

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19

Madyshev, Ilnur N., Oksana S. Dmitrieva, and Andrey V. Dmitriev. "Heat-mass transfer efficiency within the cooling towers with jet-film contact devices." MATEC Web of Conferences 194 (2018): 01036. http://dx.doi.org/10.1051/matecconf/201819401036.

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Анотація:

Jet-film contact devices with special design elements for intensification of heat-mass transfer processes are proposed. An experimental apparatus has been created in order to study the interaction of water and air flows within these devices. It has been revealed that an increase in the ratio of mass flow rate of liquid and gas phases leads to a decrease in heat efficiency coefficient. Within the area of high values of specific loads, an increase in the local minimum of mass transfer efficiency is observed.

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20

Grigorova, N. P., P. V. Monastyrev, E. G. Pakhomova, and N. Ye Semicheva. "Investigation of the Degree of Augmentation of the Mass Transfer Coefficient of the Heat Transfer Medium in a Vortex Heat Exchanger of a Gas Pressure Regulating and Metering Station Heating System." Proceedings of the Southwest State University 25, no. 1 (May 30, 2021): 53–65. http://dx.doi.org/10.21869/2223-1560-2021-25-1-53-65.

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Анотація:

Purpose of research. is to investigate the degree of augmentation of the mass transfer coefficient of a heat transfer medium in contact with a "spot" of liquid on the surface of the vortex blade when it is bombarded with dispersed contaminants in a vortex heat exchanger in order to identify a pattern that allows obtaining design values of the heat transfer coefficient of the heat transfer medium that have the best agreement with the experimental values provided in previously published articles [4, 6, 7].Methods. A complex analysis of the degree of augmentation of the mass transfer coefficient of the heat transfer medium on the surface of the vortex blade in a vortex heat exchanger based on the known theoretical positions and equations of heat and mass transfer processes.Results. The dependence of the augmentation of the mass transfer coefficient of the heat transfer medium in contact with the "spot" of liquid on the surface of the vortex blade when it is bombarded with dispersed contaminants was obtained, which allows obtaining the best agreement of the design and experimental values of the heat transfer coefficient in the vortex heat exchanger of a gas pressure regulating and metering station.Conclusion. The values of the heat transfer coefficient of the heat transfer medium calculated using the obtained dependence of the augmentation of the mass transfer coefficient of the heat transfer medium have a satisfactory convergence with the experimental data, which allows us to use this dependence in engineering calculations of the design parameters of the vortex heat exchanger used as a heat exchanger for the heating system of the working area of the gas pressure regulating and metering station. This technical solution allows not only saving natural gas as a source of heat generation, but also reducing the negative impact on the environment, since there is no need to burn natural gas. In this case, the production of thermal energy is carried out due to a regulated pressure drop of natural gas coming from the main line to consumers.

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21

Shilyaev, Michael, Helen Khromova, and Alexander Tolstykh. "Simulation of contact heat and mass transfer in spray and bubbling apparatuses." EPJ Web of Conferences 76 (2014): 01020. http://dx.doi.org/10.1051/epjconf/20147601020.

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22

Feyissa, A. H., K. V. Gernaey, S. Ashokkumar, and J. Adler-Nissen. "Modelling of coupled heat and mass transfer during a contact baking process." Journal of Food Engineering 106, no. 3 (October 2011): 228–35. http://dx.doi.org/10.1016/j.jfoodeng.2011.05.014.

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23

Barabash, Petr, Andrii Solomakha, and Volodymyr Sereda. "Experimental investigation of heat and mass transfer characteristics in direct contact exchanger." International Journal of Heat and Mass Transfer 162 (December 2020): 120359. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2020.120359.

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24

Boulama, K., N. Galanis, and J. Orfi. "Heat and mass transfer between gas and liquid streams in direct contact." International Journal of Heat and Mass Transfer 47, no. 17-18 (August 2004): 3669–81. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2004.04.004.

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25

Mizonov, Vadim, Nickolay Yelin, and Piotr Yakimychev. "A Cell Model to Describe and Optimize Heat and Mass Transfer in Contact Heat Exchangers." Energy and Power Engineering 03, no. 02 (2011): 144–49. http://dx.doi.org/10.4236/epe.2011.32018.

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26

Vigants, Edgars, Toms Prodanuks, Girts Vigants, Ivars Veidenbergs, and Dagnija Blumberga. "Modelling of Technological Solutions to 4th Generation DH Systems." Environmental and Climate Technologies 20, no. 1 (November 27, 2017): 5–23. http://dx.doi.org/10.1515/rtuect-2017-0007.

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Анотація:

Abstract Flue gas evaporation and condensing processes are investigated in a direct contact heat exchanger - condensing unit, which is installed after a furnace. By using equations describing processes of heat and mass transfer, as well as correlation coherences for determining wet gas parameters, a model is formed to create a no-filling, direct contact heat exchanger. Results of heating equipment modelling and experimental research on the gas condensing unit show, that the capacity of the heat exchanger increases, when return temperature of the district heating network decreases. In order to explain these alterations in capacity, the character of the changes in water vapour partial pressure, in the propelling force of mass transfer, in gas and water temperatures and in the determining parameters of heat transfer are used in this article. The positive impact on the direct contact heat exchanger by the decreased district heating (DH) network return temperature shows that introduction of the 4th generation DH system increases the energy efficiency of the heat exchanger. In order to make an assessment, the methodology suggested in the paper can be used in each particular situation.

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27

Yukhymenko, Mykola, Artem Artyukhov, Ruslan Ostroha, Nadiia Artyukhova, Jan Krmela, and Jozef Bocko. "Multistage Shelf Devices with Fluidized Bed for Heat-Mass Transfer Processes: Experimental Studies and Practical Implementation." Applied Sciences 11, no. 3 (January 27, 2021): 1159. http://dx.doi.org/10.3390/app11031159.

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The article deals with the theoretical description and experimental study of the hydrodynamic and heat transfer properties regarding the operation of multistage gravitational devices of the fluidized bed with inclined perforated shelves. The peculiarities of the work and the implementation field of the multistage shelf units are described. A theoretical model to define the solubilizer’s velocity above the perforation holes, in the above-shelf space of the device and in the outloading gap, as well as the residence time of the dispersed phase at the stage (perforated shelf contact) of the device is presented. The results of experimental studies regarding the influence, made by the structural parameters of the perforated shelf contacts, on the distribution pattern of single-phase and gas-dispersed flows in the workspace of the device, on the intensity of interphase heat transfer are presented. The conditions to create active hydrodynamic operating modes of multistage gravitational shelf devices, which provide higher efficiency of heat-mass transfer processes, and with lower gas consumption and hydraulic resistance compared to typical fluidized bed devices, are proved. Peculiarities regarding the implementation of heat-mass transfer processes in multistage devices are described using heat treatment and drying processes as examples.

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28

Ibragimov, Aleksandr, Lubov Gnedina, Ksenia Zaytseva, Nikita Ushakov, and Konstantin Popkov. "Heat and mass transfer in laminated glued timber bar." E3S Web of Conferences 244 (2021): 09009. http://dx.doi.org/10.1051/e3sconf/202124409009.

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Анотація:

The main prerequisites for the development of wooden housing construction in Russia are given, which determined the goal of this study - to develop a mathematical model of heat and mass transfer (moisture transfer) in glued timber for rational design of enclosing structures. Lamellas can be classified as a capillary ‒ porous body. leaning on theory of academician A.V. Lykov, the formulation of the problem of heat and mass transfer in a multilayer glued laminated timber is presented a system of equations describing non-stationary heat, mass and pressure transfer under real possible operating conditions of enclosing structures is considered. An analytical method is proposed for calculating both individual lamellas and the entire multilayer glued beam. The proposed technique allows the method of solving the inverse problem to directly calculate the resistance value of the entire bar from the unsteady temperature field. The system of equations describing the process is nonlinear and analytically insoluble. To solve the problem, a combined method for solving boundary value problems of heat transfer was used, which is based on a combination of elements of analytical and numerical solutions. A feature of the problem under consideration is that the middle lamella has heat-conducting inclusions in the form of a bough. Method is that the entire heat transfer process is divided into a number of small time intervals. Within each interval, we assume that the temperature is constant at the interface between layers and a constant heat flux through the contacting surfaces, i.e. perfect thermal contact.

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29

Gadalla, Mohamed, and Saad Ahmed. "Performance Evaluation of a Thermal Energy Storage." Applied Mechanics and Materials 291-294 (February 2013): 642–47. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.642.

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The direct contact heat transfer technique gives better heat transfer rates. In this paper, the operation of a simple system was simulated under different operating conditions. During the charging mode of the operation, refrigerant R134a is injected into water stored in an evaporator to exchange directly heat with the water and form clathrates. Later, the clathrate is used to cool water which is used for air-conditioning purposes. Direct contact charging and/or discharging eliminate the necessity of a heat exchanger inside the storage tank and leads to an effective heat transfer method. The results indicate that the performance of the system depends on the refrigerant type, compressor speed and the mass flow rate of the refrigerant.

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30

Saatdjian, E., and J. F. Large. "Heat Transfer in a Countercurrent, Gas–Solid, Packed Column." Journal of Heat Transfer 110, no. 2 (May 1, 1988): 385–89. http://dx.doi.org/10.1115/1.3250496.

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Анотація:

A theoretical model has been used, in conjunction with pressure drop and solid holdup data, to predict correctly the thermal efficiency of a countercurrent, gas–solid, packed heat exchanger. In the model, the ideal efficiency is multiplied by a ratio of particles in contact with the gas to the total amount of particles in the packed section. The Ergun equation is used to obtain both an effective packing porosity and the number of particles in contact with the gas. The results show that the model correctly gives the efficiency versus gas velocity curve for different packing heights and solids mass fluxes. The calculated and experimental velocities for which exchanger efficiency is a maximum are also in agreement.

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31

Gandhidasan, P., C. F. Kettleborough, and M. Rifat Ullah. "Calculation of Heat and Mass Transfer Coefficients in a Packed Tower Operating With a Desiccant-Air Contact System." Journal of Solar Energy Engineering 108, no. 2 (May 1, 1986): 123–28. http://dx.doi.org/10.1115/1.3268078.

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Анотація:

Packed towers can be used for solar regeneration of aqueous solutions and dehumidification of air using aqueous solutions. These processes involve simultaneous heat and mass transfer with heat effects. In order to design a packed tower for aqueous solution-air contacting operations, heat and mass transfer coefficients for each phase are required. For the present study, aqueous calcium chloride solution is used; ceramic Raschig rings and Berl saddles are used as the packing material. In this paper air phase transfer coefficients are correlated with flow rates of air and liquid and the temperature of air, whereas liquid phase coefficients are correlated with rates of air and liquid flow, and the temperature and concentration of the liquid.

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32

Tuz, V. O., and N. L. Lebed. "Heat and mass transfer during adiabatic fluid boiling in channels of contact exchangers." Applied Thermal Engineering 185 (February 2021): 116383. http://dx.doi.org/10.1016/j.applthermaleng.2020.116383.

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33

Sadeghi, Farzad, Nasser Hamdami, Mohammad Shahedi, and Ali Rafe. "Numerical Modeling of Heat and Mass Transfer during Contact Baking of Flat Bread." Journal of Food Process Engineering 39, no. 4 (April 21, 2015): 345–56. http://dx.doi.org/10.1111/jfpe.12227.

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34

Shen, Hua, Atsushi Yokoyama, and Sachiko Sukigara. "Modeling of heterogeneous heat transfer in fabrics." Textile Research Journal 88, no. 10 (March 20, 2017): 1164–72. http://dx.doi.org/10.1177/0040517517698986.

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Анотація:

Thermal comfort, an important factor when designing fabric, is strongly related to heat transfer in the fabric. Fabric is not homogeneous because the constituent yarns are interlaced at a certain weave angle, and the contact area between yarns varies. Therefore, heat transfer along the yarn in the fabric is not yet well understood. In this study, we developed a heterogeneous fabric model in which heat transfer along the longitudinal and transverse directions of the yarn is treated independently, and proposed a method for estimating the contact heat transfer coefficients for yarns. The geometrical fabric structure was constructed based on the cross section of three fabrics observed with a three-dimensional microscope. The parameters used were the mass density, specific heat, and thermal conductivity of the fibers and air. The heat flow calculated using the model was compared with that measured experimentally. Fairly good agreement was observed, verifying the validity of this heterogeneous model. The simulation results indicated that when the anisotropy of the fiber thermal conductivity is high, heat is transferred significantly faster along the longitudinal direction than along the transverse direction of the yarn, and the equilibrium temperature distribution is strongly influenced by heat transfer in the longitudinal direction.

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35

Pyatkov, Sergey G., and Vladimir A. Belonogov. "On some classes of stationary inverse problems of determining the heat transfer coefficient for mathematical models of heat and mass transfer." Yugra State University Bulletin 18, no. 1 (May 10, 2022): 101–17. http://dx.doi.org/10.18822/byusu202201101-117.

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Анотація:

In the article we consider well-posedness in Sobolev spaces of stationary inverse problems of recovering the heat transfer coefficient at the interface which is included in the transmission condition of the imperfect contact type. The existence and uniqueness theorem are exhibited. The method is constructive and the approach allows to develop numerical methods for solving the problem. The proof relies on a priori estimates obtained and the fixed-point theorem.

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36

Sundararajan, T., and P. S. Ayyaswamy. "Heat and Mass Transfer Associated With Condensation on a Moving Drop: Solutions for Intermediate Reynolds Numbers by a Boundary Layer Formulation." Journal of Heat Transfer 107, no. 2 (May 1, 1985): 409–16. http://dx.doi.org/10.1115/1.3247430.

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Condensation heat and mass transfer to a liquid drop moving in a mixture of saturated vapor and a noncondensable have been evaluated. The Reynolds number of the drop motion is 0(100). The quasi-steady, coupled, boundary layer equations for the flow field and the transport in the gaseous phase are simultaneously solved. The heat transport inside the drop is treated as a transient process. Results are presented for the heat and mass transport rates to the drop, the surface shear stress, the velocity profiles across the boundary layer, and the temperature-time history of the drop. The comparisons of results with experimental data, where available, show excellent agreement. Tables summarizing results appropriate to a wide range of condensation rates have been included. Local heat and mass transfer rates have also been presented. These features will make the paper useful to the designer of direct contact heat transfer equipment.

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37

Kokh, A. E., V. N. Popov, and P. W. Mokrushnikov. "Numerical modeling of contact-free control over crystal growth heat–mass transfer processes through heat field rotation." Journal of Crystal Growth 230, no. 1-2 (August 2001): 155–63. http://dx.doi.org/10.1016/s0022-0248(01)01337-9.

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38

Strąk, Kinga, and Magdalena Piasecka. "Research on flow boiling heat transfer for vertical upward and downward flows along a minichannel with a smooth heated surface." E3S Web of Conferences 70 (2018): 02014. http://dx.doi.org/10.1051/e3sconf/20187002014.

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Анотація:

The paper reports results for flow boiling heat transfer in a 1.7 mm deep minichannel vertically-oriented with upward and downward flow. The heated element for HFE-649 flowing upward or downward in a channel was a smooth plate. Infrared thermography allowed determining changes in temperature on the outer plate side. Two-phase flow structures were recorded through a glass pane at the other side of the channel being in contact with the fluid. Analysis of the results was performed on the basis of experimental series obtained for the same heat flux for upward and downward flows and two mass flow velocities. The results are presented as relationships between the heat transfer coefficient or the plate temperature and the channel length, boiling curves, and between the heat flux and the heat transfer coefficient and two-phase flow structure images. The impact of mass flow velocity on the heat transfer coefficient and two-phase flow structures for vertical upward and downward flows were discussed.

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39

Gorodilov, A. A., M. G. Berengarten, and A. S. Pushnov. "Experimental study of mass transfer on structured packings of direct-contact crossflow heat exchangers." Theoretical Foundations of Chemical Engineering 50, no. 4 (July 2016): 422–29. http://dx.doi.org/10.1134/s0040579516040345.

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40

Facão, Jorge, and Armando C. Oliveira. "Heat and Mass Transfer in an Indirect Contact Cooling Tower: CFD Simulation and Experiment." Numerical Heat Transfer, Part A: Applications 54, no. 10 (November 3, 2008): 933–44. http://dx.doi.org/10.1080/10407780802359104.

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41

Babakhani, D., M. Soleymani, and A. Moheb. "Heat and Mass Transfer between Air and Liquid Desiccant in Cross-flow Contact Systems." Chemical Engineering & Technology 33, no. 2 (February 2010): 281–91. http://dx.doi.org/10.1002/ceat.200900383.

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42

Facão, Jorge, and Armando Oliveira. "Heat and mass transfer correlations for the design of small indirect contact cooling towers." Applied Thermal Engineering 24, no. 14-15 (October 2004): 1969–78. http://dx.doi.org/10.1016/j.applthermaleng.2004.02.007.

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43

Khayet, M., A. O. Imdakm, and T. Matsuura. "Monte Carlo simulation and experimental heat and mass transfer in direct contact membrane distillation." International Journal of Heat and Mass Transfer 53, no. 7-8 (March 2010): 1249–59. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2009.12.043.

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44

Termpiyakul, P., R. Jiraratananon, and S. Srisurichan. "Heat and mass transfer characteristics of a direct contact membrane distillation process for desalination." Desalination 177, no. 1-3 (June 2005): 133–41. http://dx.doi.org/10.1016/j.desal.2004.11.019.

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45

Inaba, H., S. Aoyama, N. Haruki, A. Horibe, and K. Nagayoshi. "Heat and mass transfer characteristics of air bubbles and hot water by direct contact." Heat and Mass Transfer 38, no. 6 (June 1, 2002): 449–57. http://dx.doi.org/10.1007/s002310100200.

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46

Andrjesdóttir, Ólöf, Chin Lee Ong, Majid Nabavi, Stephan Paredes, A. S. G. Khalil, Bruno Michel, and Dimos Poulikakos. "An experimentally optimized model for heat and mass transfer in direct contact membrane distillation." International Journal of Heat and Mass Transfer 66 (November 2013): 855–67. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2013.07.051.

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47

Dmitriev, A. V., I. N. Madyshev, O. S. Dmitrieva, and A. N. Nikolaev. "Research Dispersing Liquid and Gas in the Contact Device with an Increased Range of Stable Operation." Ecology and Industry of Russia 21, no. 3 (March 22, 2017): 12–15. http://dx.doi.org/10.18412/1816-0395-2017-3-12-15.

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Анотація:

To increase the efficiency of mass-transfer apparatus, a jet-bubbling contact device is suggested. The article considers perspectives for using of jet-bubble contact devices for heat and mass transfer apparatus. The distinctive feature of the developed device is an intensive countercurrent contact between the gas (vapor) and liquid in each element. The authors conducted experimental studies of dispersing liquid and gas in the proposed contact devices. Powerful turbulent axisymmetric perturbations occur in the bubbling layer, which affect the initial oscillations of the jet and determine the length of its decay. In the jets larger diameter distances between the involved gas bubbles less. Therefore, the resulting local jet are usually a smaller amount of liquid, which is decomposed accordingly into smaller drops.

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48

Ghali, K., N. Ghaddar, and E. Jaroudi. "Heat and Moisture Transport Through the Microclimate Air Annulus of the Clothing-Skin System Under Periodic Motion." Journal of Heat Transfer 128, no. 9 (February 10, 2006): 908–18. http://dx.doi.org/10.1115/1.2241811.

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The study is concerned with the heat and moisture transport in a ventilated fabric-skin system composed of a microclimate air annulus that separates an outer cylindrical fabric boundary and an inner oscillating cylinder representing human skin boundary for open and closed aperture settings at the ends of the cylindrical system. The cylinder ventilation model of Ghaddar et al. (2005, Int. J. Heat Mass Transfer, 48(15), pp. 3151–3166) is modified to incorporate the heat and moisture transport from the skin when contact with fabric occurs at repetitive finite intervals during the motion cycle. During fabric skin contact, the heat and moisture transports are modeled based on the fabric dry and evaporative resistances at the localized touch regions at the top and bottom of points of the cylinder. Experiments were conducted to measure the mass transfer coefficient at the skin to the air annulus under periodic ventilation and to measure the sensible heat loss from the inner cylinder for the two cases of fabric-skin contact and no contact. The model predictions of time-averaged steady-periodic sensible heat loss agreed well with the experimentally measured values at different frequencies. The model results showed that the rate of heat loss increased with increased ventilation frequency at fixed (=amplitude/mean annular spacing). At amplitude factor of 1.4, the latent heat loss in the contact region increased by almost 40% compared to the loss at amplitude factor of 0.8 due to the increase in fabric temperature during contact. The sensible heat loss decreased slightly between 3% at f=60rpm and 5% at f=25rpm in the contact region due to higher air temperature and lack of heat loss by radiation when fabric and skin are in touch. The presence of an open aperture has a limited effect on increasing the total heat loss. For an open aperture system at amplitude factor of 1.4, the increase in heat loss over the closed apertures is 4.4%, 2.8%, and 2.2% at f=25, 40, and 60rpm, respectively.

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49

Gandhidasan, P., M. Rifat Ullah, and C. F. Kettleborough. "Analysis of Heat and Mass Transfer Between a Desiccant-Air System in a Packed Tower." Journal of Solar Energy Engineering 109, no. 2 (May 1, 1987): 89–93. http://dx.doi.org/10.1115/1.3268198.

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Heat and mass transfer analysis between a desiccant-air contact system in a packed tower has been studied in application to air dehumidification employing liquid desiccant, namely calcium chloride. Ceramic 2 in. Raschig rings are used as the packing material. To predict the tower performance, a steady-state model which considers the heat and mass transfer resistances of the gas phase and the mass transfer resistance of the liquid phase is developed. The governing equations are solved on a digital computer to simulate the performance of the tower. The various parameters such as the effect of liquid concentration and temperature, air temperature and humidity and the rates of flow of air and liquid affecting the tower performance have been discussed.

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50

Rogers, J. A., and M. Kaviany. "Variation of Heat and Mass Transfer Coefficients During Drying of Granular Beds." Journal of Heat Transfer 112, no. 3 (August 1, 1990): 668–74. http://dx.doi.org/10.1115/1.2910439.

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During convective drying of initially fully saturated granular beds, the solid matrix is gradually exposed to the ambient air, resulting in heat transfer to both the liquid and solid. In an attempt to examine the heat and mass transfer processes occurring on the surface and to examine the influence of particle size and Bond number on the drying rate, experiments are performed in which granular beds constructed of spherical particles (which range from d = 0.2 mm to d = 25.4 mm) are convectively dried. For beds constructed of very small particles (d = 0.2 mm, Bo = 0.0035) the surface areas of the liquid and solid are difficult to estimate due to the random arrangement of the particles. The experimental results confirm existing knowledge that the evaporation rate is nearly constant during the funicular state of drying. For beds constructed of large particles (d = 25.4 mm, Bo = 21.7) an estimate of the surface areas of the liquid and solid reveals that the surface areas and the evaporation rate are highly dependent on surface saturation, contact angle, and surface tension. The results indicate that heat transfer from the solid to the liquid is significant and that the heat and mass transfer processes are not analogous.

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