Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Advances in Science and Technology. Research Journal

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Results of Mathematical Modeling of Evaporation Process the Drops of Sulfuric Acid in the Gas Flow

Khimka Uliana, Helesh Andriy, Bukliv Roksoliana, Śniadkowski Mariusz

Advances in Science and Technology. Research Journal

2023

Vol. 17, no 5

41--47

The processes of concentration of dilute solutions of sulfuric acid (H2SO4), in particular hydrolytic sulfuric acid for the production of pigment titanium (IV) oxide, were analyzed. It is proposed to concentrate solutions of Н2SO4 by evaporation in direct contact of acid droplets with hot industrial exhaust gases. The mathematical model of the evaporation of Н2SO4 drops in a hot gas stream, which used for the calculations, makes it possible to calculate the mass, temperature, velocity, and coordinates of the drop at any time with sufficient accuracy. However, the calculations are difficult, cumbersome and require multiple processing of large data sets. Therefore, the aim of the article was to approximate the calculated technological parameters of sulfuric acid droplet evaporation by obtaining simple mathematical dependencies. The mathematical dependences of the mass transfer coefficient and the distance traveled by a drop of Н2SO4 during evaporation on air temperature and drop diameter were obtained. It has been established that technologically expedient evaporation of Н2SO4 drops with a diameter of ≤ 0,5·10-3 m in traditional devices leads to significant droplet loss, increased corrosion of equipment, etc. So, in order to practically implement the technology of evaporation of HSA solutions with industrial exhaust gases, it is necessary to change the technological mode of operation of the evaporator and the design of the main device. It is proposed to use the obtained results to study the methods of intensification of the evaporation process, selecting a modern mass transfer apparatus, developing a technology for utilizing hydrolytic sulfuric acid and producing pigment titanium (IV) oxide.

Functionality of TV Control Applications

Śniadkowski Mariusz

Advances in Science and Technology. Research Journal

2021

Vol. 15, no 4

192--201

The need for remote control of a television is uniform, expressed mainly in the ability to change TV channels, TV settings or use the functions built into the TV set. Remote controls have changed over time to meet users' expectations. The latest technologies make it possible to customize remote controls and configure them according to the user's needs. For the average per-son not well familiar with technology and applications, choosing the right one for a particular brand of TV is not the easiest thing to do, as the amount available is overwhelming the Google offer. The aim of the study is to analyze, compare and identify the most functional application for controlling modern TV sets based on classic Smart TV and Android TV software. The analysis covers applications available on the Google platform, i.e. the Play Store.