scholarly journals Influence of the temperature field in the energy-saving carbon-graphite thermal unit on configuration of the solidification front under different conditions of growing fluoride single crystals by the HDS method

2021 ◽  
Vol 2056 (1) ◽  
pp. 012045
Author(s):  
V A Yusim ◽  
S E Sarkisov ◽  
Y Y Kloss ◽  
F A Yusim ◽  
L V Ivanova
Keyword(s):  
Mathematical Modeling ◽  
Temperature Field ◽  
Energy Saving ◽  
Single Crystals ◽  
Solidification Front ◽  
Thermal Unit ◽  
Growing Conditions

Abstract Mathematical modeling of the influence of the temperature field created by the ECU on the position and on configuration of the solidification front under different conditions of growing single crystals of fluorides by the HDS method has been carried out. Data were obtained for different growing conditions for single crystals of fluorides and their effect on configuration of the solidification front in various modifications of the ECU of the first and second types. From a comparison of mathematical calculations, a conclusion was made about the most suitable conditions for the synthesis of these single crystals.

Spin-Lattice Coupling and Peculiarities of Magnetic Behavior of Ferrimagnetic Ludwigites Mn0.52+M1.52+Mn3+BO5(M=Cu, Ni)

2015 ◽  
Vol 233-234 ◽  
pp. 133-136 ◽  
Author(s):  
Leonard Bezmaternykh ◽  
Evgeniya Moshkina ◽  
Evgeniy Eremin ◽  
Maxim Molokeev ◽  
Nikita Volkov ◽  
...  
Keyword(s):  
Temperature Field ◽  
Low Temperature ◽  
Magnetic Anisotropy ◽  
Single Crystals ◽  
Magnetic Behavior ◽  
Temperature Hysteresis ◽  
Spin Lattice ◽  
Field Magnetization ◽  
Lattice Coupling

Temperature-field and orientational magnetization dependences of single crystals were measured. Both samples demonstrate significant field-depending temperature hysteresis and low-temperature counter field magnetization. The correlation of orientational dependences of these effects and magnetic anisotropy is analyzed; the role of spin-lattice interactions is discussed.

The Dispatch Method Based on Demand Response under the Pressure of Energy-Saving

2013 ◽  
Vol 860-863 ◽  
pp. 746-753
Author(s):  
Shu Xiang Wang ◽  
Ji Chun Liu ◽  
Chuang Deng ◽  
Wei Dong Zheng ◽  
Hou Dong Xu ◽  
...  
Keyword(s):  
Energy Saving ◽  
Demand Response ◽  
Optimal Allocation ◽  
Demand Side ◽  
Thermal Unit ◽  
Nsga Ii ◽  
On Demand ◽  
Unit Output ◽  
Grid Operation

To promote the development of energy-saving dispatch under the pressure of energy saving and environmental protection, this paper proposes an energy-saving dispatch method based on considering demand response, which establishes a bi-level optimization model based on the optimal allocation plan of thermal units and interruptible loads, and solve the problem with improved NSGA-II and sensitivity analysis between unit interrupt capacity and thermal unit output. The case study shows that this model can decrease the pollutants at both generation side and demand side significantly with guaranteeing the economic of power grid operation. The model can also give the dispatch schedule of thermal units and interruptible loads accurately and thus has some use value.

Displacement Control of Hydraulic Pump with Servo System for Energy Saving

2011 ◽  
Vol 148-149 ◽  
pp. 942-946 ◽  
Author(s):  
Jin Сhun Song ◽  
Guan Gan Ren ◽  
Yu Jie Ren ◽  
Bai Sen Zhang
Keyword(s):  
Mathematical Modeling ◽  
Energy Saving ◽  
Pressure Loss ◽  
Hydraulic System ◽  
Actual Situation ◽  
Displacement Control ◽  
Hydraulic Pump ◽  
Servo Valve ◽  
Governing System ◽  
Large Pressure

The worst problem we are facing in the hydraulic system is the serious loss of energy, due to bad matching between the power components and the actuators and the large pressure loss when oil flowing though the various hydraulic elements, especially in speed governing system. However, Servo pump which is introduced in this paper can cover the problems mentioned above finely. The most difficult thing is its mathematical modeling, in the paper, it is established according to the actual situation. Here, the modeling between servo valve and cylinder, between cylinder and pump are established respectively, then these are connected by geometry relationship, finally ,the whole modeling is completed.

scholarly journals Mathematical Modeling of Temperature Field of Multilayer Enclosure Structures

2016 ◽  
Vol 73 ◽  
pp. 02023
Author(s):  
Boris Aksenov ◽  
Svetlana Karyakina ◽  
Oleg Stepanov ◽  
Anatoly Shapoval ◽  
Mikhail Bodrov
Keyword(s):  
Mathematical Modeling ◽  
Temperature Field

scholarly journals Developments in the control of growing conditions in Dutch glasshouse horticulture.

1986 ◽  
Vol 34 (3) ◽  
pp. 381-385
Author(s):  
E. Kooistra
Keyword(s):  
Information Systems ◽  
Energy Saving ◽  
Management Information Systems ◽  
Short Review ◽  
Artificial Substrates ◽  
Management Information ◽  
Recent Advances ◽  
Growing Conditions ◽  
Automated Management

A short review and discussion on recent advances in greenhouse heating and ventilation, energy saving, growing on artificial substrates, and automated management information systems. (Abstract retrieved from CAB Abstracts by CABI’s permission)

FEM and FIM Study of Reaction Zones on Platinum

1997 ◽  
Vol 62 (2) ◽  
pp. 213-217
Author(s):  
Zlatko Knor ◽  
Jan Plšek ◽  
Luboš Dvořák
Keyword(s):  
Temperature Field ◽  
Low Temperature ◽  
Single Crystals ◽  
Room Temperature ◽  
Effect Of Temperature ◽  
Surface Anisotropy ◽  
Initial Shape ◽  
Reaction Zones

The initial shape of the reaction zones for the interaction of hydrogen and oxygen on the surfaces of the single crystals of platinum in FEM and FIM devices is discussed in connection with the effect of temperature and surface anisotropy. Interaction of the (H2 + O2) mixture has been studied at room temperature and the results were confronted with the interaction of hydrogen and preadsorbed oxygen at low temperature and with the anisotropy of the low-temperature field-corrosion of platinum.

scholarly journals Nucleation Control in Physical Vapor Transport Growth of AlN Single Crystals on Polycrystal Tungsten Substrates

2019 ◽  
Vol 26 (2) ◽  
pp. 139-142
Author(s):  
Honglei WU ◽  
Zuoyan QIN ◽  
Xueyong TIAN ◽  
Zhenhua SUN ◽  
Baikui LI ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Temperature Field ◽  
High Temperature ◽  
Single Crystals ◽  
Thermal Gradient ◽  
Vapor Transport ◽  
Physical Vapor Transport ◽  
Heating Process ◽  
X Ray ◽  
Tungsten Substrate

The improved resistively-heated furnace with two heaters established a vertical thermal gradient to control nucleation during AlN single crystals Physical Vapor Transport (PVT) growth on polycrystal tungsten substrates. During the high temperature (> 1850 °C) heating process, the reverse temperature field (i.e., the temperature difference between the sublimation zone and the crystalline zone ΔT < 0) was obtained to reduce the number of nuclei on the tungsten substrate. During growth, the proper positive values of ΔT T were chosen to content the supersaturation values (0.25 < S < 0.3). The reverse temperature condition during high temperature (> 1850 °C) cooling was fulfilled to avoid recrystallization on grown AlN crystal. AlN single crystals made through the method were characterized by X-ray diffractions (XRD) and Raman spectroscopy.

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