Science Journal of Energy Engineering

Volume 2, Issue 2, April 2014

  • Characterization of Physical and Chemical Properties of Biodiesel Produced from Jatropha Curcas Seeds Oil Cultivated in Rwanda

    Jean Ntaganda, Andre Ndagijimana, Oscar Benimana

    Issue: Volume 2, Issue 2, April 2014
    Pages: 8-12
    Received: 5 March 2014
    Accepted: 10 April 2014
    Published: 20 April 2014
    Abstract: A yield of 26.88% of seed oil was obtained from Jatrophacurcas cultivated in Rwanda. Within 2 hours of reaction, the methyl ester (Biodiesel) was produced at a yield of 85.3% from obtained oil through direct base-catalysed trans-esterification process using methanol and sodium hydroxide as alcohol and catalyst. The proportion of 0.6g of NaOH in 20m... Show More
  • A Mathematical Model for Estimating the Life-Cycle Costs of Hydrogen-Powered Vehicles

    Jungin Kim, Yeonhee Lee

    Issue: Volume 2, Issue 2, April 2014
    Pages: 13-17
    Received: 28 April 2014
    Accepted: 8 May 2014
    Published: 20 May 2014
    Abstract: This study provides a mathematical model that delivers fundamental data for developing a pricing strategy for fuel cell electric vehicles (FCEVs). A mathematical model that transforms the life-cycle cost of a hydrogen vehicle into the corresponding gasoline vehicle is designed using cost-benefit analysis and life-cycle analysis. The FCEV obtains ec... Show More