Science Journal of Energy Engineering

Volume 7, Issue 3, September 2019

  • Cost Accounting of Environmental Degradation by Pollution Loss Method

    Li Yuhang, Shi Jiayi, Liu Zhuokai

    Issue: Volume 7, Issue 3, September 2019
    Pages: 35-38
    Received: 22 September 2019
    Accepted: 28 September 2019
    Published: 12 October 2019
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    Abstract: The biosphere provides many natural processes to maintain a healthy and sustainable environment for human life, which is known as ecosystem services. Economic theory often disregards the impact of its decisions on the biosphere or assumes unlimited resources or capacity for its needs. However, whenever humans alter the ecosystem, we potentially lim... Show More
  • Determination of the Solar Cell Optimal Junction Recombination Velocity Using Hybrid Method

    Nzonzolo, Ibondji Mwaziby Nionsi, Louis Okotaka Ebale, Desire Lilonga-Boyenga

    Issue: Volume 7, Issue 3, September 2019
    Pages: 39-44
    Received: 16 September 2019
    Accepted: 5 October 2019
    Published: 20 October 2019
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    Abstract: In this paper we present a technique for determining the optimum junction recombination velocity of a solar cell, using a combination of the electrical equivalent model, and the finite element method. Starting from the continuity equation that describes the solar cell operation solved in one dimension by the finite element method, the excess minori... Show More
  • Design of Combustible Gas Automatic Detection and Alarm System

    Yunfei Zhang, Zhengguang Liu, Qiaoyu Liu

    Issue: Volume 7, Issue 3, September 2019
    Pages: 45-53
    Received: 18 September 2019
    Accepted: 9 October 2019
    Published: 20 October 2019
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    Abstract: With the social development, gas has been widely applied to various aspects of social life. However, the combustible gas has brought us great convenience, but also there is a considerable risk. Based on this, we designed a kind of "prevention" as the characteristics of the combustible gas automatic detection and alarm systems. The system is the cho... Show More