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In this paper, a solution for the mathematical modeling and control of the seamless steel pipes heat-treating process is proposed, considering as case study the annealing procedure. The proposed mathematical modeling procedure is based on analytical identification. In order to implement the proposed temperature control structure, the neural networks are used for learning the behavior of the system...
The identification of the static characteristics of an electric multizone furnace is considered. A gray box approach is utilized. The furnace is divided into segments both horizontally and radially, and physical equations are used to describe heat transfers between segments. The identification strategy seeks to estimate an accurate temperature profile of the furnace at steady-state using a smaller...
This paper deals with temperature profiles and temperature measurements on different experimental samples. Samples were made for illustrating problems that may occur in reflow-soldering technology that used IR emitter as a heat source. In this work we focus on the several problems which have the influence on temperature profile - problem with different volume of the components, problem with different...
In this paper, an on-line technology for measuring the temperature of the furnace chamber is introduced and a detailed installation technology including the detection note is provided. Without internal heat source and neglecting variation of temperature on both side, the heat transfer along the measuring pole is only regarded, which can be treat as one-dimensional stable heat conduction question....
Temperature and pressure are important parameters related to energy consumption and safe operation of oil depot. A mathematical model is established from the point of temperature drop and pressure drop during storage and transportation process based on the reasonably simplified physical model of oil depot. Then parameter distributions of each node are obtained by the application of sequential modular...
Regenerative rotary reheating furnace refers to those kinds of furnaces which not only have a rotary hearth but also utilize regenerative combustion technology. It makes use of low calorific value fuels such as the exhaust gas from the burners. This paper focuses on a large regenerative rotary furnace, analyzes and validates the mathematical model which is used for the regenerative rotary furnace...
The Reheating furnace is the major energy consumption item of equipment on a rolling steel production line within a metallurgical enterprise. Creating an optimized control system for the reheating furnace by using industrial controlled technology to control the temperature of the furnace, is the main method to promote reheating efficiency and reduce energy consumption of the furnace. The radiation...
Recently, there are some problems like complex system, large weight of pumping high-temperature pipe and easily damaged heat preservation on three media desiccation of large scale fan mill direct firing pulverizing system. Directed towards these problems, adopting water-cooled high temperature furnace gas pipe to adjustment high gas temperature is proposed, to change three media desiccation into two...
As the industrial furnace is characterized as large size and decentralized radiating surfaces, the air flow and heat recovery of the furnace can be effectively realized with bossing. This paper introduces the heat recovery mechanism through bossing. A thermal experiment table for heat recovery with visualized bossing was erected; orthogonal regression combination test was carried out; and the relation...
In reheating furnace, the response of strip temperature to furnace temperature is severely nonlinear and hysteretic. Although it is very important to obtain information on billet temperatures, it is not feasible during furnace operation. Consequently, a billet temperature profile should be estimated. The reheating furnace and roughing mill of a hot strip mill were studied. A novel control method using...
With the development of electronic information technology, microwave products have been developing towards the trend of high-performance and high-reliability, which leads to higher requirements for the performance of eutectic devices. This paper introduces the entire heat transfer process of the heating chamber of the eutectic furnace, which is used to encapsulate high-power LED chips. And corresponding...
A case study of a waste incineration plant operating close to optimality by using simple feed-back control schemes is presented. Using off-line optimization the structure of the optimization problem is exploited and a set of variables is found, such that if the process is controlled with those variables are at their setpoints, operation is near-optimal.
Comprehensive knowledge of the heat and mass transfer processes in the melt of induction applications is required to realize efficient metallurgical processes. Experimental and numerical studies of the melt flow in induction furnaces show that the flow pattern, which comprise several vortexes of the mean flow, and the temperature distribution in the melt are significantly influenced by low-frequency...
Cobalt-carbon eutectic-point (Co-C) was realized with a small simple single zone furnace in order to ensure if it is possible or not. The furnace is originally manufactured for palladium fixed point by wire bridge method. The temperature distribution of the furnace is not always good enough to realize the fixed point because it is not designed for crucible method. However the Co-C eutectic-point was...
ldquoDevelopment for advanced thermoelectric conversion systemsrdquo supported by the new energy and industrial technology development organization (NEDO) has been successfully completed as one of the Japanese national energy conservation projects. Three types of the cascaded thermoelectric modules operating up to 850 K in high electrode temperature and two types of Bi-Te thermoelectric modules operating...
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