Energy Consumption Pattern in Rolling Mill Company, Kano Northwest Nigeria
Abdullahi Ahmed,
Bashir Isyaku Kunya,
Salihu Omonowo Siyaka
Issue:
Volume 3, Issue 5, October 2017
Pages:
90-94
Received:
14 May 2017
Accepted:
4 July 2017
Published:
6 September 2017
Abstract: The electrical and fuel energy consumption for seven years period was collected for rolling mill company, Kano northwest Nigeria. Monthly energy consumption data were gathered and analyzed. The average electrical energy and thermal energy consumption per tonne of product for the period considered are 34.04GJ/Tonne and 99.74GJ/Tonne respectively. The energy end users were identified as electric furnace, DC main motor, Compressor machine, Air-conditioning, Lightning and Electrical equipment. Regression techniques were used to correlate the monthly energy consumption with product weights in Tons. The Coefficient of determinant (R2) for electrical energy consumption was 0.8458 while R2 for fuel oil energy consumption was 0.7773 indicating strong correlation for electrical and fuel oil energy consumption.
Abstract: The electrical and fuel energy consumption for seven years period was collected for rolling mill company, Kano northwest Nigeria. Monthly energy consumption data were gathered and analyzed. The average electrical energy and thermal energy consumption per tonne of product for the period considered are 34.04GJ/Tonne and 99.74GJ/Tonne respectively. Th...
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Positive Streamer Simulation in Air Using Finite Element Method
Abd Elatif El-Zein,
Mohamed Talaat,
Ashraf Samir
Issue:
Volume 3, Issue 5, October 2017
Pages:
95-100
Received:
20 August 2017
Accepted:
30 August 2017
Published:
26 September 2017
Abstract: A new methodology for positive streamer process is presented. This process depends on the critical electric field value that required for streamer initiation. So, an accurate computational of the electric field distribution across needle-to-plane gap is required. A finite element method using Comsol Multiphysics program is adopted for this simulation. The streamer path has been considered as a conducting path of 300 micro-meter in length and 30 micro-meter in radius with 108 electrons on its head. The results have been verified with others.
Abstract: A new methodology for positive streamer process is presented. This process depends on the critical electric field value that required for streamer initiation. So, an accurate computational of the electric field distribution across needle-to-plane gap is required. A finite element method using Comsol Multiphysics program is adopted for this simulati...
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An Overview of Frequency Control as a Criterion of Power System Reliability and International Survey of Determining Operating Reserve
Md Saleh Ebn Sharif,
Mahmud-Ul-Tarik Chowdhury,
Md Janatul Ferdous,
Md Moniruzzaman,
Md Monower Zahid Khan
Issue:
Volume 3, Issue 5, October 2017
Pages:
101-114
Received:
6 October 2017
Accepted:
23 October 2017
Published:
28 October 2017
Abstract: In this paper an extensive literature review of power system frequency control regulation and in relation to this, operating reserve determination policy have been highlighted. In terms of power system reliability and stability aspect, frequency control mechanism is the most important factor; hence there is a need for sufficient capacity reserve in case of contingency. An investigation of operating reserve policy in different regions, e.g., US, Canada, Europe and Asia have been conducted to clearer understand of reserve policy. It has been identified that, probabilistic approach is the best suited for determining generation adequacy in terms of economic and reliability point of view. Different type of reserve is allocated at different level of frequency control level. So, technical specification and timing for frequency control level of different system operator have been discussed widely. A comparison of frequency control framework between European and US is also presented. To ensure reliability and stability, it is recommended to adopt special protection scheme alongside new technologies – WAMS, SmartGrid.
Abstract: In this paper an extensive literature review of power system frequency control regulation and in relation to this, operating reserve determination policy have been highlighted. In terms of power system reliability and stability aspect, frequency control mechanism is the most important factor; hence there is a need for sufficient capacity reserve in...
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