Process Waste Generation and Utilization in Steel Industry
Issue:
Volume 3, Issue 1, January 2018
Pages:
1-5
Received:
14 April 2018
Accepted:
2 May 2018
Published:
11 May 2018
Abstract: Steel production process is a complex process. For manufacturing of steel material various processes are required to do, that causes the production of the high amount of waste which need to be processed. Production of any product causes waste which has very less economy for the primary production process, but those waste products also have some economic value which can be increased by processing. In this paper, the production of waste in major industries and utilization of that waste and handling of waste has been studied. The paper mainly consists of waste production and utilization in steel industries, best possible way to get “Best from the waste”. The steel industries are one of the major waste producers, but they have invented new methods to utilize the wastes. These new methods helped for sustainable developments as they help in getting more efficiency and reducing the cost of primary methods. As per the ISO 14000 standards industries need to follow so many standards for recycling of the waste material.
Abstract: Steel production process is a complex process. For manufacturing of steel material various processes are required to do, that causes the production of the high amount of waste which need to be processed. Production of any product causes waste which has very less economy for the primary production process, but those waste products also have some eco...
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Speed Control of a Single Phase Induction Motor Using Step-down Cycloconverter
Ayebatonye Marttyns Epemu,
Kingsley Okeoghene Enalume
Issue:
Volume 3, Issue 1, January 2018
Pages:
6-10
Received:
6 December 2017
Accepted:
18 December 2017
Published:
15 May 2018
Abstract: Induction motor is a constant speed machine when operated from the mains. However it is necessary to vary the speed of the motor in some applications. The speed of a motor basically depends on the supply frequency and number of poles. While the frequency can easily be changed without changing the entire structure of the motor, the same cannot be said for the number of poles. This paper examines the use of cycloconverters to vary the speed of single phase induction motors. Cycloconverters work on changing the supply frequency to vary the speed of the motor. With the aid of three push buttons connected to the microcontroller and the program written on it, the speed of the motor was varied in three steps, at F, F/2 & F/3. The microcontroller sends the gating pulse through an optocoupler to trigger the thyristors in a dual bridge providing the alternating signal needed to drive the motor. As the frequency decreases, the speed of the motor also decreases. The cycloconverter was used on a single phase induction motor and the result shows that it can vary the speed of an induction motor.
Abstract: Induction motor is a constant speed machine when operated from the mains. However it is necessary to vary the speed of the motor in some applications. The speed of a motor basically depends on the supply frequency and number of poles. While the frequency can easily be changed without changing the entire structure of the motor, the same cannot be sa...
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