Automatic control of the oxygen content in a tunnel kiln for firing porcelain

1973 ◽  
Vol 30 (5) ◽  
pp. 330-331
Author(s):  
I. I. Metla ◽  
L. F. Neviditsyn ◽  
V. N. Pan'ko ◽  
N. M. Gizun
Keyword(s):  
Automatic Control ◽  
Oxygen Content ◽  
Tunnel Kiln ◽  
Firing Porcelain

Automatic control of tunnel kiln heat cycles

Refractories ◽  
1966 ◽  
Vol 7 (7-8) ◽  
pp. 439-443
Author(s):  
L. G. Gozenbuk ◽  
V. R. Ksendzovskii
Keyword(s):  
Automatic Control ◽  
Tunnel Kiln

scholarly journals Investigation of the Robust Absolute Stability of the Tunnel Kiln Control System with Delay

2021 ◽  
Vol 20 ◽  
pp. 25-30
Author(s):  
N. A., Tseligorov ◽  
A. V., Chubukin ◽  
E. N. Tseligorova
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Automatic Control ◽  
Tunnel Kiln ◽  
Absolute Stability ◽  
Graphical Method ◽  
Parametric Uncertainty ◽  
Transition Process ◽  
Kiln Temperature ◽  
Interval Coefficients

The paper considers the system of automatic control of the tunnel kiln temperature conditions. The investigation of a delay influence on the transition process has been carried on. The transfer function of the object under control with interval coefficients taking into account possible effects of the parametric uncertainty has been obtained. A graphical method of representing the obtained results in the form of displaying the modified amplitude-phase characteristics on a complex plane has been applied which obviously demonstrates a robust absolute stability of the system under investigation. The simulation performed in the Matlab environment has proved the correctness of the results obtained.

MODERNIZATION OF TUNNEL KILN FOR CERAMIC BRICKS CALCINATION LLC «METEKHIS CERAMICS» (GEORGIA)

2017 ◽  
pp. 67
Author(s):  
A.I. Torchinskij ◽  
A.Yu. Ljashko ◽  
Z. Chichua
Keyword(s):  
Automatic Control ◽  
Control Systems ◽  
Tunnel Kiln ◽  
Engineering Equipment ◽  
Automatic Control Systems ◽  
Advantages And Disadvantages ◽  
Manufactured Products ◽  
Aerodynamic Parameters ◽  
Firing Ceramic

Gas-burning devices of SG Series and the system of automatic control of firing ceramic bricks for the tunnel kiln by production of Gas Institute of NAS of Ukraine were mounted at the enterprise LLC «Metekhis ceramics» (Georgia. The analysis of the design features of this type of furnaces was made by the Bulgarian project. The advantages and disadvantages caused by outdated thermal equipment and the lack of aerodynamic parameters of automatic control systems are also considered. The fundamental scheme of the kiln is designed with a new thermo-heating engineering equipment and automatics for thermal and aerodynamic modes regulation The influence of new heating engineering equipment and automatics is considered for the quality of manufactured products, kiln productivity and natural gas specific consumption. Bibl. 5, Fig. 2

Automatic control of porcelain firing in a tunnel kiln

1974 ◽  
Vol 31 (8) ◽  
pp. 559-561
Author(s):  
V. V. Kortnev ◽  
B. D. Aleksandrov ◽  
M. Ya. Rekhtman ◽  
V. S. Kalita ◽  
V. V. Martynenko
Keyword(s):  
Automatic Control ◽  
Tunnel Kiln ◽  
Porcelain Firing

A system of measurement and automatic control of tunnel kiln operating conditions

Refractories ◽  
1986 ◽  
Vol 27 (7-8) ◽  
pp. 406-410
Author(s):  
Yu. A. Levchenko ◽  
M. Z. Shvartsman ◽  
N. B. Gertsyk ◽  
V. V. Strekotin ◽  
N. A. Tyutin ◽  
...  
Keyword(s):  
Automatic Control ◽  
Tunnel Kiln ◽  
Operating Conditions

The stability of dislocation networks under various oxygen-doping conditions in superconducting Bi2Sr2CaCu2Oy single crystals and their influence on the flux pinning properties

1994 ◽  
Vol 52 ◽  
pp. 802-803
Author(s):  
Y. Feng ◽  
X. Y. Cai ◽  
R. J. Kelley ◽  
D. C. Larbalestier
Keyword(s):  
Single Crystals ◽  
Oxygen Content ◽  
Basal Plane ◽  
Flux Pinning ◽  
Pinning Centers ◽  
Before And After ◽  
Anomalous Peak ◽  
Basal Plane Dislocation ◽  
The Stability ◽  
Further Development

The issue of strong flux pinning is crucial to the further development of high critical current density Bi-Sr-Ca-Cu-O (BSCCO) superconductors in conductor-like applications, yet the pinning mechanisms are still much debated. Anomalous peaks in the M-H (magnetization vs. magnetic field) loops are commonly observed in Bi2Sr2CaCu2Oy (Bi-2212) single crystals. Oxygen vacancies may be effective flux pinning centers in BSCCO, as has been found in YBCO. However, it has also been proposed that basal-plane dislocation networks also act as effective pinning centers. Yang et al. proposed that the characteristic scale of the basal-plane dislocation networksmay strongly depend on oxygen content and the anomalous peak in the M-H loop at ˜20-30K may be due tothe flux pinning of decoupled two-dimensional pancake vortices by the dislocation networks. In light of this, we have performed an insitu observation on the dislocation networks precisely at the same region before and after annealing in air, vacuumand oxygen, in order to verify whether the dislocation networks change with varying oxygen content Inall cases, we have not found any noticeable changes in dislocation structure, regardless of the drastic changes in Tc and the anomalous magnetization. Therefore, it does not appear that the anomalous peak in the M-H loops is controlled by the basal-plane dislocation networks.

A study of oxygen and vacancy ordering in YBa2Cu3O7−x

1989 ◽  
Vol 47 ◽  
pp. 164-165
Author(s):  
Y. P. Lin ◽  
A. H. O’Reilly ◽  
J. E. Greedan ◽  
M. Post
Keyword(s):  
Electron Microscopy ◽  
Neutron Diffraction ◽  
Oxygen Content ◽  
Carbon Film ◽  
Nitrogen Atmosphere ◽  
Vacancy Ordering ◽  
Powder Samples ◽  
Vacancy Chains ◽  
Chain Ordering

In the basal planes of the orthorhombic YBa2Cu3O7-X compound with x=0.07, which has a Tc of around 90K, chains of copper-oxygen are formed along the [010] direction. Previous investigations on the variation of Tc with oxygen content have shown the existence of a plateau at Tc = 60K for x=0.3 to 0.4, suggesting the presence of a separate phase. This phase has also been identified to be orthorhombic, but with a 2x superlattice along [100] of the parent structure, and the superlattice has been attributed to the formation of alternating copper-oxygen and copper-vacancy chains. In our work, we have studied the chain ordering phenomenon by electron microscopy and neutron diffraction on samples with different oxygen contents. We report here some of our electron microscopy findings for samples with x=0.4.Powder samples of YBa2Cu3O7-X were prepared by controlled re-oxidation of previously reduced material. For electron microscopy, the sample was dry ground using a mortar and pestle in a dry nitrogen atmosphere without the use of any solvent and transferred dry onto holey carbon film for examination in a Philips CM12 microscope.

The biochemistry of drugs and doping methods used to enhance aerobic sport performance

2008 ◽  
Vol 44 ◽  
pp. 63-84 ◽  
Author(s):  
Chris E. Cooper
Keyword(s):  
Oxygen Uptake ◽  
Oxygen Content ◽  
Oxygen Delivery ◽  
Sport Performance ◽  
Blood Substitutes ◽  
Altitude Training ◽  
Blood Oxygen ◽  
Oxygen Carriers ◽  
Sports Performance ◽  
Blood Doping

Optimum performance in aerobic sports performance requires an efficient delivery to, and consumption of, oxygen by the exercising muscle. It is probable that maximal oxygen uptake in the athlete is multifactorial, being shared between cardiac output, blood oxygen content, muscle blood flow, oxygen diffusion from the blood to the cell and mitochondrial content. Of these, raising the blood oxygen content by raising the haematocrit is the simplest acute method to increase oxygen delivery and improve sport performance. Legal means of raising haematocrit include altitude training and hypoxic tents. Illegal means include blood doping and the administration of EPO (erythropoietin). The ability to make EPO by genetic means has resulted in an increase in its availability and use, although it is probable that recent testing methods may have had some impact. Less widely used illegal methods include the use of artificial blood oxygen carriers (the so-called ‘blood substitutes’). In principle these molecules could enhance aerobic sports performance; however, they would be readily detectable in urine and blood tests. An alternative to increasing the blood oxygen content is to increase the amount of oxygen that haemoglobin can deliver. It is possible to do this by using compounds that right-shift the haemoglobin dissociation curve (e.g. RSR13). There is a compromise between improving oxygen delivery at the muscle and losing oxygen uptake at the lung and it is unclear whether these reagents would enhance the performance of elite athletes. However, given the proven success of blood doping and EPO, attempts to manipulate these pathways are likely to lead to an ongoing battle between the athlete and the drug testers.

Sign in / Sign up

Export Citation Format

Share Document