Some features of mass-exchange processes in processing single complex viscose yarns

1985 ◽  
Vol 17 (2) ◽  
pp. 155-158
Author(s):  
G. G. Finger
Keyword(s):  
Mass Exchange ◽  
Complex Viscose ◽  
Exchange Processes ◽  
Single Complex

scholarly journals Methodology of software development for artificial microclimate control systems

2020 ◽  
pp. 21-31
Author(s):  
Ihor Golinko ◽  
Pavlo Gikalo
Keyword(s):  
Control System ◽  
Software Development ◽  
Control Systems ◽  
Mass Exchange ◽  
Air Conditioning ◽  
Block Diagram ◽  
Dew Point ◽  
Program Logic ◽  
Air Conditioners ◽  
Exchange Processes

The specificity of accelerated software development for microcontrollers is considered. The software development technique for a program-logic controller is presented on the example of an algorithm for controlling the industrial premises microclimate. The method of “dew point” for the control system of industrial air conditioning. The analysis of the functioning of the control system of industrial air conditioning according to the “dew point” method has been carried out and a block diagram of the control system of an artificial microclimate has been proposed. Structurally, the mathematical description of an artificial microclimate system is presented, which takes into account the nonlinearity of mass-exchange processes of air preparation. It can be used by specialists to implement computer-integrated technologies and to analyze and adjust the parameters of the control system of industrial air conditioners.

scholarly journals Universal multifunctional device for heat and mass exchange processes during organic raw material processing

2018 ◽  
Vol 6 (1 (96)) ◽  
pp. 47-54 ◽  
Author(s):  
Aleksey Zagorulko ◽  
Andrii Zahorulko ◽  
Kateryna Kasabova ◽  
Vitalii Chervonyi ◽  
Oleksandr Omelchenko ◽  
...  
Keyword(s):  
Material Processing ◽  
Mass Exchange ◽  
Raw Material ◽  
Heat And Mass Exchange ◽  
Exchange Processes ◽  
Multifunctional Device

Contact Devices for High-Heat Mass-Exchange Processes (Review)

2014 ◽  
Vol 50 (5-6) ◽  
pp. 301-305
Author(s):  
A. V. Stepykin ◽  
A. A. Sidyagin
Keyword(s):  
Mass Exchange ◽  
High Heat ◽  
Exchange Processes ◽  
Contact Devices

scholarly journals Modeling of greenhouse radiant heating

2018 ◽  
Vol 193 ◽  
pp. 03006 ◽  
Author(s):  
Mikhail Pavlov ◽  
Sergey Lukin ◽  
Oleg Derevianko
Keyword(s):  
Mathematical Model ◽  
Air Temperature ◽  
Mass Exchange ◽  
Thermal Power ◽  
Equation System ◽  
Radiant Heating ◽  
Heat And Mass Exchange ◽  
Heating Systems ◽  
Exchange Processes ◽  
The Impact

Commercially available greenhouses are commonly used for provision of year-round growing of agricultural crops at protected ground. In order to provide favorable conditions for plants growth these agricultural constructions should be equipped by artificial heating systems in cold sea-sons. This work presents an overview of basic traditional and alternative heating systems which find their applications in agriculture. Advantages of application of roof radiant heating with infrared radiation sources for green-houses are discussed. It was discovered that now there is no appropriate mathematical model of greenhouse radiant heating, which takes into account both heat and mass exchange processes. Here we propose a mathematical model of radiant heating, which includes equation system of both heat and mass exchange processes for greenhouse, its enclosure and soil. The numer-ical calculations were performed for commercially available greenhouse “Farmer 7.5”. We investigated the impact of external air temperature and heat exchange rate on the following greenhouse radiant heating characteris-tics: internal air temperature, heating system thermal power and water dis-charge for soil watering.

scholarly journals Heat-mass exchange processes dynamics forecasting in fires in typical multistorey apartment buildings

2020 ◽  
Vol 1441 ◽  
pp. 012018
Author(s):  
E A Bedrina ◽  
A S Rekin ◽  
S F Khrapsky ◽  
A I Bokarev ◽  
E S Denisova
Keyword(s):  
Mass Exchange ◽  
Apartment Buildings ◽  
Exchange Processes

Mass Transfer Modeling into Disk Spaces of Heat Turbomachines

2015 ◽  
Vol 362 ◽  
pp. 1-12
Author(s):  
Nikolay Lazarovski ◽  
Paskal Novakov ◽  
Anastas Yangyozov
Keyword(s):  
Mass Exchange ◽  
Three Dimensional ◽  
Axial Loading ◽  
Steam Turbines ◽  
Labyrinth Seals ◽  
Axial Forces ◽  
Exchange Processes ◽  
Working Medium ◽  
Flow Part ◽  
Mass Transfer Modeling

The thermal aerodynamic analysis of the processes in thermal turbomachinery is of great importance when it comes their design and operation in order to achieve reliable and trouble-free operation in the required turbo-power range. The distribution of kinematic and thermodynamic parameters of the working medium around heavy loaded working disks and labyrinth seals has a significant influence on heat-mass exchange and energy transformation processes. Object of this work is thermo-aerodynamic research of mass exchange processes associated with the movement of the working medium in typical complex clearances between the rotor and stator of the steam turbines of disk type and determining axial forces in the rotor. Results based on one-dimensional and two-dimensional formulations of the problem are analyzed and compared with the results of field experiment of turbine P12-90 / 18, which before the reconstruction had problems with unstable axial loading during operation in wide power range. After proper reconstruction the turbine is in a sustainable balance throughout the whole range of operation modes. There is consistency in the results in quantitative and qualitative terms regarding the extreme conditions of axial loading. There is a three-dimensional approach to solving the problem of distribution of axial loading on the structural elements of the rotor, whose advantage is the obtaining of a detailed picture of the passing fluid in the clearances between the rotor and stator of the aggregate and diaphragm-disk spaces, and a detailed presentation of the uneven distribution of the axial forces on the front surfaces. The applied thermal aerodynamic approach allows to predict the main characteristics of steam turbines at different axial and radial clearances, changing during the operation in case of wear of the the crest of the labyrinth seals. This approach can serve as a thermo-aerodynamic diagnosis of the condition of the flow part of different thermal turbomachinery and in variable working modes.

scholarly journals Measurement of mass exchange processes and coefficients in a simplified open-channel lateral cavity connected to a main stream

2016 ◽  
Vol 17 (3) ◽  
pp. 429-448 ◽  
Author(s):  
Emmanuel Mignot ◽  
Wei Cai ◽  
Juan Ignacio Polanco ◽  
Cristian Escauriaza ◽  
Nicolas Riviere
Keyword(s):  
Mass Exchange ◽  
Open Channel ◽  
Main Stream ◽  
Exchange Processes ◽  
Lateral Cavity

Comparative characteristics of industrial packings for heat-and mass-exchange processes

2008 ◽  
Vol 44 (3-4) ◽  
pp. 187-192 ◽  
Author(s):  
A. M. Kagan ◽  
A. S. Pushnov
Keyword(s):  
Mass Exchange ◽  
Heat And Mass Exchange ◽  
Exchange Processes

Effect of mass-exchange processes in the channel of a carbon electrode on the kinetics of vaporization of impurity elements

1975 ◽  
Vol 23 (4) ◽  
pp. 1303-1305
Author(s):  
V. R. Ognev ◽  
�. Ya. Ogneva ◽  
G. M. Zairova
Keyword(s):  
Mass Exchange ◽  
Carbon Electrode ◽  
Exchange Processes ◽  
Impurity Elements ◽  
Kinetics Of
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