The Application of the Amorphous Metal Transformers in Heavy Oil Electric Heating System

2014 ◽  
Vol 532 ◽  
pp. 191-195 ◽  
Author(s):  
Bao Jiang Sun ◽  
Lei Su ◽  
Chao Zhang
Keyword(s):  
Electric Heating ◽  
Heating System ◽  
Intermediate Frequency ◽  
Amorphous Metal ◽  
Technical Performance ◽  
Alloy Material ◽  
Working Principle ◽  
The Stability ◽  
And Control ◽  
Fast Rise

In order to solve the problem that the big loss of no-load and the fast rise of temperature when employ the conventional silicon steel metal transformer (SSMT) in the electric heating system, we choose the amorphous metal transformer (AMMT). In this paper, firstly, we give a brief introduction of the amorphous alloy material properties and compare the no-load characteristic of the AMMT with the SSMT. Secondly, the structure of intermediate frequency heating system working principle and control strategy are introduced. Finally, extensive experiments were conducted to validate the ideas. The experiments show that the AMMT not only improve the efficiency of transformer, solve the heating problem of transformer, but also improve the stability, security and other technical performance of the system, so it is worth recommending and promoting.

The Air Controlled Hydraulic System Design of 3201z-Type Dump Truck Lifting Mechanisms

2011 ◽  
Vol 383-390 ◽  
pp. 1202-1207
Author(s):  
Tao Ping Yan
Keyword(s):  
Hydraulic System ◽  
Hydraulic Cylinder ◽  
Dump Truck ◽  
Gear Pump ◽  
Technical Parameters ◽  
Technical Performance ◽  
System Pressure ◽  
Working Principle ◽  
The Stability ◽  
Hydraulic System Design

3201Z-type dump truck is modification desiged by EQ3208GJ dump truck chassis which the technical performance parameters are known, and using a lifting mechanism of air controlled hydraulic system. By analyzing the composition and working principle of air controlled hydraulic system and referring to similar models, the design of the tank, the limiting mechanism and power taker are conducted. By calculating the main technical parameters, including in the performances of the hydraulic cylinder and the hydraulic pump, the dump truck's special oil cylinder HG-E180X780 and gear pump CBT-E563 are selected. By the stability of the piston rod, the system pressure and cars lifting time are checked; the reasonability and safty of the design can be proved.

Study on the Simulation of Electric Heating Phase Change Floor System

2011 ◽  
Vol 374-377 ◽  
pp. 263-267
Author(s):  
Jian Li ◽  
Jia Peng He
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Electric Heating ◽  
Heating System ◽  
Temperature Changes ◽  
Common System ◽  
The Common ◽  
Materials Used ◽  
The Stability ◽  
Floor System

Establishing a kind of electric heating system of phase change floor, analysing the stability and comfort through the simulation. Choosing the phase change materials, which the phase transition temperature is 29°C and the latent heat is 188 kJ/kg. The phase change materials used in electric heating floor heating system, comparing the general electric heating floor system, Calculating the floor surface temperature and indoor air temperature. It turned out that the heat storage of phase change floor system will be well, when compared to the common system, indoor temperature changes gently, human comfort higher. Phase change materials stores the cheap electricalheatenergy, and releases during daytime, So as to realize energy conservation and economy .

The Air Controlled Hydraulic System Design of 3201z-Type Dump Truck Lifting Mechanisms

2012 ◽  
Vol 433-440 ◽  
pp. 3852-3857
Author(s):  
Tao Ping Yan
Keyword(s):  
Hydraulic System ◽  
Hydraulic Cylinder ◽  
Dump Truck ◽  
Gear Pump ◽  
Technical Parameters ◽  
Technical Performance ◽  
System Pressure ◽  
Working Principle ◽  
The Stability ◽  
Hydraulic System Design

3201Z-type dump truck is modification desiged by EQ3208GJ dump truck chassis which the technical performance parameters are known, and using a lifting mechanism of air controlled hydraulic system. By analyzing the composition and working principle of air controlled hydraulic system and referring to similar models, the design of the tank, the limiting mechanism and power taker are conducted. By calculating the main technical parameters, including in the performances of the hydraulic cylinder and the hydraulic pump, the dump truck's special oil cylinder HG-E180X780 and gear pump CBT-E563 are selected. By the stability of the piston rod, the system pressure and cars lifting time are checked, the reasonability and safty of the design can be proved.

The Simulation of Temperature Control System Heated by Heat Transfer Oil in Vulcanizing Machine Based on Neural Network

2012 ◽  
Vol 516-517 ◽  
pp. 471-475
Author(s):  
Lin Fu Dong ◽  
Jing Jing Wu ◽  
Hua Long Ou
Keyword(s):  
Neural Network ◽  
Heat Transfer ◽  
Temperature Control ◽  
Heating System ◽  
Temperature Control System ◽  
Pi Control ◽  
System Robustness ◽  
Simulation Results ◽  
The Stability ◽  
And Control

This paper presents a method of a new system of heating vulcanizing machine by heat transfer oil, it is a system that based on neural network of fuzzy temperature control. One one hand, compared with the traditional PI control of relative ratio, we can make a conclusion that in the heating system of fuzzy control, the heating system robustness could be enhanced. One the other hand, through the analysis of the simulation results, this programme guarantees the stability of heating system and emission the temperature fluctuation which is caused by heating plate. The last but not the least, we can take these advantages and control the system easier.

scholarly journals SELECTION OF HEATING SYSTEM BASED ON ACQUISITION AND OPERATING COSTS FOR FAMILY HOUSES

2016 ◽  
Author(s):  
Miloslav Novotný ◽  
Karel Šuhajda ◽  
Radim Kucera ◽  
Eva Šuhajdová
Keyword(s):  
Electric Heating ◽  
Heating System ◽  
Operating Costs ◽  
Financial Return ◽  
Heating Systems ◽  
Promethee Method ◽  
Detached House ◽  
And Control ◽  
Family House ◽  
Selection Of

The aim of this study is to evaluate mutual dependences and significance of the input factors of a heating system for a family house. The input factors which are being most commonly considered are operating costs, acquisition prices on financial return rate, life span of these systems or requirements for maintenance and control. This research is focused on the analysis of three different heating systems in the common detached house; electric heating foils, heat pump and gas boiler. The building itself is evaluated in three variants; with and without a ventilation unit and with adjusted structure composition. To analyse the parameters mentioned above the Promethee method (multicriterial analysis) has been used.

The Heating System of Agricultural Facilities Using Excess Heat Power Transformers

2020 ◽  
Vol 67 (1) ◽  
pp. 42-47
Author(s):  
Anatoliy I. Sopov ◽  
Aleksandr V. Vinogradov
Keyword(s):  
System Design ◽  
Heat Supply ◽  
Cooling System ◽  
Power Transformer ◽  
Electric Heating ◽  
Heating System ◽  
Power Transformers ◽  
Large Power ◽  
Excess Heat ◽  
Power Centers

In power transformers, energy losses in the form of heat are about 2 percent of their rated power, and in transformers of large power centers reach hundreds of kilowatts. Heat is dissipated into the environment and heats the street air. Therefore, there is a need to consume this thermal energy as a source of heat supply to nearby facilities. (Research purpose) To develop methods and means of using excess heat of power transformers with improvement of their cooling system design. (Materials and methods) The authors applied following methods: analysis, synthesis, comparison, monographic, mathematical and others. They analyzed various methods for consuming excess heat from power transformers. They identified suitable heat supply sources among power transformers and potential heat consumers. The authors studied the reasons for the formation of excess heat in power transformers and found ways to conserve this heat to increase the efficiency of its selection. (Results and discussion) The authors developed an improved power transformer cooling system design to combine the functions of voltage transformation and electric heating. They conducted experiments to verify the effectiveness of decisions made. A feasibility study was carried out on the implementation of the developed system using the example of the TMG-1000/10/0.4 power transformer. (Conclusions) The authors got a new way to use the excess heat of power transformers to heat the AIC facilities. It was determined that the improved design of the power transformer and its cooling system using the developed solutions made it possible to maximize the amount of heat taken off without quality loss of voltage transformation.

A simulation apparatus for the experimental study of batch reactor control methods

1986 ◽  
Vol 51 (6) ◽  
pp. 1259-1267
Author(s):  
Josef Horák ◽  
Petr Beránek
Keyword(s):  
Experimental Study ◽  
Closed Loop ◽  
Dynamic Properties ◽  
Batch Reactor ◽  
Exothermic Reaction ◽  
Electric Heating ◽  
Batch Reactors ◽  
Exchange Area ◽  
The Stability ◽  
Methods Of Control

A simulation apparatus for the experimental study of the methods of control of batch reactors is devised. In this apparatus, the production of heat by an exothermic reaction is replaced by electric heating controlled by a computer in a closed loop; the reactor is cooled with an external cooler whose dynamic properties can be varied while keeping the heat exchange area constant. The effect of the cooler geometry on its dynamic properties is investigated and the effect of the cooler inertia on the stability and safety of the on-off temperature control in the unstable pseudostationary state is examined.

scholarly journals Data-Driven Stability Assessment of Multilayer Long Short-Term Memory Networks

2021 ◽  
Vol 11 (4) ◽  
pp. 1829
Author(s):  
Davide Grande ◽  
Catherine A. Harris ◽  
Giles Thomas ◽  
Enrico Anderlini
Keyword(s):  
Neural Network ◽  
Network Architecture ◽  
Short Term Memory ◽  
Moving Average ◽  
Machine Learning Algorithms ◽  
Physical Models ◽  
Data Driven ◽  
The Stability ◽  
And Control ◽  
Nonlinear Autoregressive

Recurrent Neural Networks (RNNs) are increasingly being used for model identification, forecasting and control. When identifying physical models with unknown mathematical knowledge of the system, Nonlinear AutoRegressive models with eXogenous inputs (NARX) or Nonlinear AutoRegressive Moving-Average models with eXogenous inputs (NARMAX) methods are typically used. In the context of data-driven control, machine learning algorithms are proven to have comparable performances to advanced control techniques, but lack the properties of the traditional stability theory. This paper illustrates a method to prove a posteriori the stability of a generic neural network, showing its application to the state-of-the-art RNN architecture. The presented method relies on identifying the poles associated with the network designed starting from the input/output data. Providing a framework to guarantee the stability of any neural network architecture combined with the generalisability properties and applicability to different fields can significantly broaden their use in dynamic systems modelling and control.

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