International Journal of Energy and Power Engineering

Volume 3, Issue 6, December 2014

  • Load Flow Solution of the Tanzanian Power Network Using Newton-Raphson Method and MATLAB Software

    Mashauri Adam Kusekwa

    Issue: Volume 3, Issue 6, December 2014
    Pages: 277-286
    Received: 15 November 2014
    Accepted: 27 November 2014
    Published: 5 December 2014
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    Abstract: Load flow studies are the backbone of power system analysis and design. They are necessary for planning, operation, optimal power flow and economic scheduling and power exchange between utilities. This paper describes modelling procedure and present models of system components used in performing load flow analysis. The developed models are joined t... Show More
  • Assessment on Passive Cooling Techniques to Improve Steel Roof Thermal Performance in Hot Tropical Climate

    Madi Kabore, Etienne Wurtz, Yézouma Coulibaly, Adamah Messan, Patrice Moreaux

    Issue: Volume 3, Issue 6, December 2014
    Pages: 287-295
    Received: 25 November 2014
    Accepted: 9 December 2014
    Published: 18 December 2014
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    Abstract: In African hot tropical climate countries, due to climate and the unsuitability of construction materials, building’s indoor environment remains over the thermal comfort acceptable limit over long periods of time during the year. Among the building envelope components, roof is a critical part that is highly susceptible to solar radiation. Solutions... Show More
  • Heating and Cooling Hybrid System and Method for Its Calculation and Design

    Zohrab Melikyan

    Issue: Volume 3, Issue 6, December 2014
    Pages: 296-307
    Received: 8 December 2014
    Accepted: 24 December 2014
    Published: 31 December 2014
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    Abstract: In this article newly developed heating and cooling hybrid system is discussed. The system combines a heat pump, heating boiler and solar air heater. Low temperature source of heat pump is a gas mixture composed of waste warm gases, like inside used ventilation air, flue gases of heating boiler (smock), as well as outside air, heated in solar air h... Show More
  • A System Dynamics Model for Energy Planning in Niger

    Yacouba Moumouni, Sajjad Ahmad, R. Jacob Baker

    Issue: Volume 3, Issue 6, December 2014
    Pages: 308-322
    Received: 15 December 2014
    Accepted: 6 January 2015
    Published: 19 January 2015
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    Abstract: This paper proposes an energy management model using system dynamics (SD) modeling approach. The time span of the model extends from 2003 to 2030. The Model was calibrated and used for the evaluation of six policy scenarios. Population, per capita electricity consumption, and the industrial sectors were identified as key components and used as inpu... Show More
  • Thermal Analysis of the Combustion Chamber of an Industrial Hot Water Spray Washing Machine

    Ashimedua Ogochukwu Godwin, Enibe Samuel Ogbonna, Kebodi Chiedu Lawrence

    Issue: Volume 3, Issue 6, December 2014
    Pages: 323-330
    Received: 17 December 2014
    Accepted: 30 December 2014
    Published: 20 January 2015
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    Abstract: The thermal analysis of an industrial hot water spray washing machine using hot air from the combustion of diesel fuel to heat up water that flows through a spirally coiled steel tube heat exchanger inside a steel shell combustion chamber was analyzed. The working fluids used are water and air. The spirally coiled tube is made by bending a 15mm dia... Show More
  • Resource Assessment and Optimization Study of Efficient Type Hybrid Power System for Electrification of Rural District in Ethiopia

    Samuel Tesema, Getachew Bekele

    Issue: Volume 3, Issue 6, December 2014
    Pages: 331-340
    Received: 19 December 2014
    Accepted: 6 January 2015
    Published: 30 January 2015
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    Abstract: The Somali region in Ethiopia enjoys an average wind speed of 5m/s at 10m elevation and an average daily solar radiation of 7.5kwh/m2/day. Within this perspective, a remote rural village in Somali region calledWerder district (6050'N 45030' E) can be electrified with a stand-alone hybrid renewable energy system. The village is far away from the nat... Show More