معــــــــــــــــــــــــــا نرســـــــــــــــــــــــــــــم عالمنــــــــــــــــــــــــــا

اهلا وسهلا بك زائرنا الكريم يسعدنا تسجيلك في اسرتنا او دخولك اذا كنت عضوا
في منتدانا المتواضع`·.¸¸.·´´¯`··._.· (معــــــــــــــــــــــــــــــــا ) `·.¸¸.·´´¯`··._.·`


انضم إلى المنتدى ، فالأمر سريع وسهل

معــــــــــــــــــــــــــا نرســـــــــــــــــــــــــــــم عالمنــــــــــــــــــــــــــا

اهلا وسهلا بك زائرنا الكريم يسعدنا تسجيلك في اسرتنا او دخولك اذا كنت عضوا
في منتدانا المتواضع`·.¸¸.·´´¯`··._.· (معــــــــــــــــــــــــــــــــا ) `·.¸¸.·´´¯`··._.·`

معــــــــــــــــــــــــــا نرســـــــــــــــــــــــــــــم عالمنــــــــــــــــــــــــــا

هل تريد التفاعل مع هذه المساهمة؟ كل ما عليك هو إنشاء حساب جديد ببضع خطوات أو تسجيل الدخول للمتابعة.

معــــــــــــــــــــــــــا نرســـــــــــــــــــــــــــــم عالمنــــــــــــــــــــــــــا


    Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks

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    mostafasharshar

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    Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks 700850549
    ذكر
    عدد المساهمات : 244

    نقاط : 728
    تاريخ التسجيل : 09/11/2009
    المزاج : الحمد لله

    Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks Empty Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks

    مُساهمة من طرف mostafasharshar الخميس يناير 21, 2010 11:44 am

    Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks

    Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks 51+u-QJxTrL

    Biofuels, Solar and Wind as Renewable Energy Systems: Benefits and Risks
    By David Pimentel


    Publisher: Springer
    Number Of Pages: 506
    Publication Date: 2008-09-01
    ISBN-10 / ASIN: 1402086539
    ISBN-13 / EAN: 9781402086533
    Binding: Hardcover




    With shortages of fossil energy, especially oil and natural gas, and
    heavy biomass energy use occurring in both developed and developing
    countries, a major focus has developed worldwide on renewable energy
    systems. Renewable energy systems include wind power, biomass,
    photovoltaics, hydropower, solar thermal, thermal ponds, and biogas.



    Currently, a heavy focus is on biofuels made from crops, such as
    corn, sugarcane, and soybeans, for use as renewable energy sources.
    Wood and crop residues also are being used as fuel. Though it may seem
    beneficial to use renewable plant materials for biofuel, the use of
    crop residues and other biomass for biofuels raises many concerns about
    major environmental problems, including food shortages and serious
    destruction of vital soil resources.



    All renewable energy systems need to be investigated because
    humankind has only about 40 years of oil and gas reserves remaining.
    There is a 50 to 100 year supply of coal resources in the ground, but
    coal will become increasingly difficult to extract and will greatly
    increase the global warming threat.



    Serious energy conservation and research on viable renewable energy
    technologies are needed. This book considers the effectiveness and
    economics of several renewable energy technologies of current interest,
    including biofuels, solar and wind.














    http://www.filefactory.com/file/272e1f/n/biosolwin_rar/








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