scholarly journals Heat and Mass Transfer Coef. in a Cooling Tower

1952 ◽  
Vol 16 (5) ◽  
pp. 151-153
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Cooling Tower

scholarly journals ANALYSIS OF HEAT AND MASS TRANSFER ON COOLING TOWER FILL

2020 ◽  
Vol 14 (1) ◽  
pp. 25
Author(s):  
Abdul Aziz Rohman Hakim ◽  
Engkos Achmad Kosasih
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Relative Humidity ◽  
Heat And Mass Transfer ◽  
Cooling Tower ◽  
Stream Velocity ◽  
Design Data ◽  
Analogy Method ◽  
Ambient Relative Humidity ◽  
Air Stream

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.

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

2008 ◽  
Vol 16 (1) ◽  
pp. 30-37 ◽  
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.

scholarly journals New explicit analytical solutions of equations for heat and mass transfer in a cooling tower energy system

2019 ◽  
Vol 11 (12) ◽  
pp. 168781401989614
Author(s):  
Qianjian Guo ◽  
Xiaoni Qi ◽  
Peng Sun ◽  
Pengjiang Guo
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Analytical Solutions ◽  
Cooling Tower ◽  
Mass Transfer Process ◽  
Energy System ◽  
Transfer Model ◽  
Elementary Functions ◽  
Solutions Of Equations ◽  
The One

The aim of this article is to develop an accurate and fast analytical method for heat and mass transfer model in a cooling tower energy system. Some algebraic explicit analytical solutions of the one-dimensional differential equation sets describing the coupled heat and mass transfer process in a cooling tower are derived. The explicit solutions have not yet been published before. The explicit equations of heat and mass transfer are expressed in elementary functions. By solving these differential equations in a cooling tower, the temperature distribution of liquid and gas, the moisture content in the air can be obtained in each section over the vertical height of the tower. A comparison of analytical and experimental results was given in this article, and good agreements were shown for the typical cases studied. The analytical solutions can serve as a benchmark to check the results of numerical calculation.

scholarly journals Development of Modified Incompressible Ideal Gas Model for Natural Draft Cooling Tower Flow Simulation

2018 ◽  
Vol 180 ◽  
pp. 02037
Author(s):  
Tomáš Hyhlík
Keyword(s):  
Mathematical Model ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Cooling Tower ◽  
Flow Simulation ◽  
Ideal Gas ◽  
Specific Humidity ◽  
Boussinesq Model ◽  
Natural Draft ◽  
Ideal Gas Model

The article deals with the development of incompressible ideal gas like model, which can be used as a part of mathematical model describing natural draft wet-cooling tower flow, heat and mass transfer. It is shown, based on the results of a complex mathematical model of natural draft wet-cooling tower flow, that behaviour of pressure, temperature and density is very similar to the case of hydrostatics of moist air, where heat and mass transfer in the fill zone must be taken into account. The behaviour inside the cooling tower is documented using density, pressure and temperature distributions. The proposed equation for the density is based on the same idea like the incompressible ideal gas model, which is only dependent on temperature, specific humidity and in this case on elevation. It is shown that normalized density difference of the density based on proposed model and density based on the nonsimplified model is in the order of 10-4. The classical incompressible ideal gas model, Boussinesq model and generalised Boussinesq model are also tested. These models show deviation in percentages.

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