Deciphering the heat and mass transfer behaviors of staggered tube bundles in a closed wet cooling tower using a 3-D VOF model

This paper discusses heat and mass transfer in cooling tower fill. In this research, dry bulb temperature at the bottom fill, ambient relative humidity, air stream velocity entering fill, dry bulb temperature leaving the fill, relative humidity of air leaving the fill, inlet and outlet water temperature of cooling tower were measured. Those data used in heat and mass transfer calculation in cooling tower fill. Then, do the heat and mass transfer calculation based on proposed approch. The results are compared with design data. The design and analogy method showed different result. The parameter which influence the heat transfer at cooling tower are represented by coefficient of heat transfer hl and coefficient of mass transfer kl. The differencies result between design and analogy method shows that there is important parameter which different. Deeply study needed for it.

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Experimental studies and numerical modelling of heat and mass transfer process in shell-and-tube heat exchangers with compact arrangements of tube bundles

MATEC Web of Conferences ◽

10.1051/matecconf/201824002006 ◽

2018 ◽

Vol 240 ◽

pp. 02006 ◽

Cited By ~ 2

Author(s):

Valery Gorobets ◽

Yurii Bohdan ◽

Viktor Trokhaniak ◽

Ievgen Antypov

Keyword(s):

Mass Transfer ◽

Numerical Modelling ◽

Heat And Mass Transfer ◽

Heat Exchangers ◽

Experimental Studies ◽

Mass Transfer Process ◽

Experimental Investigations ◽

Transfer Processes ◽

Tube Bundles ◽

Shell And Tube

Shall-and-tube heat exchangers based on the bundles with in-line or staggered arrangements have been widely used in industry and power engineering. A large number of theoretical and experimental works are devoted to study of hydrodynamic and heat transfer processes in such bundles. In that, works the basic studies of heat and mass transfer for these bundles are found. However, heat exchangers of this type can have big dimensions and mass. One of the ways to improve the weight and dimensions of the shell-and-tube heat exchangers is to use compact arrangement of tube bundles. A new design of heat exchanger is proposed, in which there are no gaps between adjacent tubes that touch each other. Different geometry of these tube bundles with displacement of adjacent tubes in the direction of transverse to the flow is considered. Numerical modelling and experimental investigations of hydrodynamic, heat and mass transfer processes in such tube bundles has been carried out. The distribution of velocities, temperatures, and pressure in inter-tube channels have been obtained.

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Experimental and numerical studies of heat and mass transfer in low-temperature heat accumulator with phase transformations of accumulating material

MATEC Web of Conferences ◽

10.1051/matecconf/201824001009 ◽

2018 ◽

Vol 240 ◽

pp. 01009 ◽

Cited By ~ 2

Author(s):

Valery Gorobets ◽

Ievgen Antypov ◽

Viktor Trokhaniak ◽

Yurii Bohdan

Keyword(s):

Mass Transfer ◽

Phase Transformations ◽

Heat And Mass Transfer ◽

Thermal Energy ◽

Experimental Studies ◽

Experimental Plant ◽

Chemical Transformations ◽

Heat Accumulator ◽

Tube Bundles ◽

Melting And Crystallization

Accumulation of thermal energy is produced with the aim of storing at certain times, when there is an overabundance of this energy and its further use in other periods of time when there is a deficit thermal energy. Thermal energy storage may be carried out under heating of any material (water, solid materials etc.) or by using the phase or chemical transformation of the material (melting and crystallization processes, direct and reverse chemical reaction). Thermal accumulators with phase or chemical transformations are allowed to concentrate a large amount of energy in a relatively small volume of accumulating material. In this paper an experimental study and numerical modeling of heat and mass transfer in the heat accumulator during phase transformations of the accumulating material are presented. The experimental plant consists of a chamber filled with paraffin. In experimental studies, the changes of the temperature distribution in heat accumulating material and tube bundles have investigated. Numerical simulation of melting and solidification of heat accumulating material during the heated and cooled of tube bundles were performed. As the results of research, the basic laws of melting and crystallization processes in heat accumulator during phase transformations of heat accumulating material were determined.

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Mathematical modeling of heat and mass transfer in transpiration cooling of water droplets in a cooling tower

Journal of Engineering Physics and Thermophysics ◽

10.1007/bf00862104 ◽

1993 ◽

Vol 64 (2) ◽

pp. 119-123 ◽

Cited By ~ 2

Author(s):

S. P. Fisenko

Keyword(s):

Mathematical Modeling ◽

Mass Transfer ◽

Heat And Mass Transfer ◽

Cooling Tower ◽

Transpiration Cooling ◽

Water Droplets

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AERODYNAMICS OF CERAMIC REGULAR SEDIMENTATION FOR HEAT AND MASS TRANSFER APPARATUSES OF ENVIRONMENTAL PROTECTION/KERAMINIŲ REGULIARIŲ ANTGALIŲ AERODINAMIKA ŠILUMOS IR MASĖS PERNAŠOS PROCESAMS APLINKOS APSAUGOS ĮRENGINIUOSE VYKDYTI/ АЭРОДИНАМИКА КЕРАМИЧЕСКИХ РЕГУЛЯРНЫХ НАСАДОК ДЛЯ ТЕПЛОМАССООБМЕННЫХ ПРОЦЕССОВ В АППАРАТАХ ЗАЩИТЫ ОКРУЖАЮЩЕЙ СРЕДЫ

Journal of Environmental Engineering and Landscape Management ◽

10.3846/1648-6897.2008.16.30-37 ◽

2008 ◽

Vol 16 (1) ◽

pp. 30-37 ◽

Cited By ~ 1

Author(s):

Aleksandr Pushnov ◽

Algirdas Sakalauskas

Keyword(s):

Mass Transfer ◽

Environmental Protection ◽

Heat And Mass Transfer ◽

Cooling Tower ◽

Ceramic Foam ◽

Test Facility ◽

Test Results ◽

Aerodynamic Test ◽

Processing Techniques ◽

Aerodynamic Investigation

A new efficient ceramic regular sedimentation for heat and mass transfer in apparatuses of environmental protection is proposed. A new sedimentation realization with isotropic properties of a structure is offered. The aerodynamic test results of the new sedimentation are shown. The paper describes a laboratory test facility designed for conducting aerodynamic investigation of cooling tower sedimentation. Measured parameters, data processing techniques and examples of the results obtained are discussed. The tested sedimentation is a porous layer of ceramic foam manufactured by special technology. Santrauka Siūloma nauja keraminių reguliarių antgalių dinamika šilumos ir masės pernašos procesams aplinkos apsaugos įrenginiuose vykdyti. Siūlomas antgalis leis realizuoti poringojo sluoksnio izotopinę struktūrą. Pateikti naujo antgalio aerodinaminių bandymų rezultatai. Резюме Предложена новая эффективная керамическая регулярная насадка для осуществления процессов тепло- и массообмена в аппаратах газоочистки. Предлагаемая насадка позволяет реализовать изотропную структуру зернистого слоя. Приведены результаты аэродинамических испытаний новой насадки.

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