Advances in Applied Sciences

Volume 4, Issue 2, April 2019

  • Heat Balance Analysis in Cement Rotary Kiln

    Shihab Ali Khalifa, Doha Yahia Alsadig

    Issue: Volume 4, Issue 2, April 2019
    Pages: 26-32
    Received: 7 October 2018
    Accepted: 3 December 2018
    Published: 26 May 2019
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    Abstract: The purpose of this study is optimizing the air and fuel quantities at kiln considering design parameters of the cement plant by keeping adequate safety factors at each level of calculations to assure that neither production rate nor quality of the clinker vary. Analysis of Heat balance was used to determine the sources of heat loss from the kiln s... Show More
  • Electrical and Exergy Analysis of a Simple Pass Photovoltaic–Thermal (PV/T) Air Heater with Slats Under Weather Conditions of the Far Nord Region, Cameroon

    Paiguy Armand Ngouateu Wouagfack, Ariane Laurelle Ngankou, Noël Djongyang, Réné Tchinda

    Issue: Volume 4, Issue 2, April 2019
    Pages: 33-43
    Received: 23 March 2019
    Accepted: 23 April 2019
    Published: 26 May 2019
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    Abstract: In this paper, a simple pass photovoltaic-thermal air heater system with slats has been considered to study its electrical and exergy performance by theoretical and numerical analysis. The collector has been modeled in such a way that the absorber plate is totally covered by photovoltaic modules. The climatic data (solar irradiation, ambient temper... Show More
  • Effects of Varieties and Intra Row Spacing on Yield of Maize (Zea mays L) Under Supplementary Irrigation in an Arid Region of Western Ethiopia

    Tasisa Temesgen

    Issue: Volume 4, Issue 2, April 2019
    Pages: 44-50
    Received: 16 March 2019
    Accepted: 6 May 2019
    Published: 31 May 2019
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    Abstract: Determination of optimum plant population and the use of improved varieties in combination with appropriate agronomic practices are important components of maize production package for maximizing productivity. The study was conducted 2017- 2018 under supplementary irrigation at 9o 10' 00'' N' latitude and 35o22' 00′′ E longitude, Western Ethiopia, ... Show More
  • Design and Simulation of Photo-voltaic Water Pumping System for Irrigation

    Abdulbasit Nasir

    Issue: Volume 4, Issue 2, April 2019
    Pages: 51-63
    Received: 19 March 2019
    Accepted: 14 May 2019
    Published: 12 June 2019
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    Abstract: In locations where electricity is not available, other means are necessary to pump water for different applications. Using a diesel pump to deliver water causes economic and environmental problems. The higher price of diesel increases operation costs of diesel water pumping system thereby reducing the incomes. In addition, the use of a diesel pump ... Show More
  • Challenges of Female Students Academic Achievement: The Case of Debre Markos University

    Genanew Jemberu Engida

    Issue: Volume 4, Issue 2, April 2019
    Pages: 64-71
    Received: 15 October 2018
    Accepted: 28 December 2018
    Published: 12 June 2019
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    Abstract: Females have their own contribution in economic, political and social aspects of a country. Educated females are taking a lion share in a country’s development. In Ethiopia female students’ participation at university level is growing time to time. But, the numbers of female students who graduate from the universities are low compared with male stu... Show More