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  • 1
    Online Resource
    Online Resource
    New York, NY :Springer,
    Keywords: Solar power plants--Spain--Finance. ; Electric utilities--Spain--Rate of return. ; Electronic books.
    Description / Table of Contents: This book offers the first bulk analysis of a large-scale, real-world deployment of 3.5 GW of installed, grid-connected solar plants in Spain, including all of the factors that limited and adjusted the real electricity output through one full-year cycle.
    Type of Medium: Online Resource
    Pages: 1 online resource (141 pages)
    Edition: 1st ed.
    ISBN: 9781441994370
    Series Statement: SpringerBriefs in Energy Series
    DDC: 333.792330946
    Language: English
    Note: Intro -- Spain's Photovoltaic Revolution -- Preface -- Acknowledgments -- About the Authors -- Contents -- Table of Equivalences -- Abbreviations and Acronyms -- Chapter 1: Introduction: Solar Energy and Human Civilization -- Why EROI? -- Solar Energy-Derived Fossil Fuels -- What Level of EROI Do We Need? -- Why the Kingdom of Spain? -- Spain (2009-2011): An Excellent Test Bed for Solar PV Energy Costs and Gains -- Energy in Spain -- Contemporary Spain -- References -- Chapter 2: The Evolution of the Demand for Primary Energy and Electricity in Spain -- Recent Evolution of the Spanish Electricity Supply -- An Overview of the Status of Renewable Energies in Spain -- Chapter 3: The Historical, Legal, Political, Social and Economic Context of Solar Photovoltaics in Spain -- Development and Deployment of Photovoltaic Energy Technologies in Spain -- Electrical Output of Solar Photovoltaic Plants -- Photovoltaic Technologies Utilized in Spain -- Large Government Subsidies and the Solar PV Installation Boom -- Bending the Rules -- Ups and Downs with the Royal Decrees: Growing Premium Tariffs vs. Growing Dif culties in Government Budgets -- Theoretical Interest Is Still Alive Despite the Reduction in Premium Tariffs and Assigned Quotas -- Dancing with the Prices -- Impacts on Spain's Industries -- …And Spain Died of Success -- Dif culties Associated with the Success of the Spanish Solar PV Program -- The Increasing Use of Imported PV Components and Equipment -- Solar PV as a Financial Product, Rather Than a Renewable Asset -- Fraud -- The Financial Support to Renewable Energies from a Fossil-Fuelled Society -- Chapter 4: Calculating the Energy Return on Energy Invested (EROEI or EROI) for Spain's Solar Photovoltaic Energy -- Energy Outputs (Numerator) -- Energy Inputs (Denominator) -- Deriving Energy Intensities for Money Spent on Inputs. , Calculating an Extremely Rough EROI for a 1 GW Solar Photovoltaic Plant in Spain -- Spanish Data Sources: A Good Start with Good Institutions and Public Companies -- Literature -- Chapter 5: Methods: Calculating the Energy Output. The Energy Returned (ER or E out) -- Definitions of Solar Photovoltaic Power Used in Our EROI Analysis -- Annual Electrical Output Compared to Nominal Capacity for Spain -- Factors Considered -- l 1 : Mismatch of Modules -- l 3 : Angular and Spectral Losses -- l 4 : Nonful llment of Nameplate (Peak) Power -- l 5 : Losses Due to Temperature -- l 6 : Shadowing/Shading -- l 7 : Maximum Power Point Tracker -- l 8 : Direct Current Wiring -- l 9 : Alternative Current/Direct Current Output of Inverter -- l 10 : AC Wiring Within the PV Plant -- Extended Performance Ratio Factors -- l 11 : Medium-Voltage Losses (Within the PV plant) -- Losses in Conversion from Low to High Voltage -- l 12 : Voltage Switch Offs, Voltage Sags, and Voltage Swells -- l 13 : Peak Versus Nominal Installed Power Factoring -- l 14 : Losses in the Evacuation Line to the Electric Network -- Would Rooftop PV Mountings Save These Losses? -- l 15 : Degradation of Modules over Time -- Cumulative Impact -- Chapter 6: Methods: Calculating the Energy Input. The Energy Invested (EI or Ein) -- Calculating the Energy Inputs -- Direct Energy and Material Inputs -- a 1 Accesses, Foundations, and Perimeter Fencing -- External Accesses -- Internal Ways -- Foundations -- Canals -- Fencing -- a 2 Energy Investments for Evacuation Lines and Their Rights of Way -- Other Necessary Energy Investments Derived from Economic Expenses and Translated into Energy Equivalences -- a 3 Operation and Maintenance Energy Costs -- a 4 Module Washing and/or Cleaning -- a 5 Self-Consumption of Energy in Plants -- a 6 Security and Surveillance -- Indirect Energy Inputs and Material Inputs. , Energy Derived from Conventional Life Cycle Analysis Studies and Calculated as an Inverse Factor of an EPBT -- a 7 Modules, Inverters, Trackers, and Metallic Infrastructure (Labor Excluded) -- a 8 Transportation: from Local Manufacturing to Air Shipments from China -- a 9 Premature Phase out of Unamortized Manufacturing and Other Equipment -- Operating Expenses -- a 10 Energy Costs Associated with Injection of Intermittent Loads: Pump Up Costs and/or Other Massive Storage Systems, When Applying -- Energy Estimates from Monetary Values -- Financial Services -- a 11 Insurance -- a 12 Fairs, Exhibitions, Promotions, Conferences, etc. -- a 13 Administration Expenses -- a 14 Municipality Taxes, Duties, Levies, and Taxes on Production -- a 15 Cost of Long-Term Rents or Ownership of Land for Solar PV Plants -- a 16 Circumstantial Labor and Associated Economic/Energy Costs (Under V. Financial): Consultants, Notary Publics, Public Register, Civil Servants/Public Of cers, Engineering Colleges, Legal Firms, etc. -- Consultants -- Notary Publics -- Social Costs to Develop Photovoltaics or Any Other Engineered Facility -- Engineering Colleges -- Legal Costs -- Civil Servants/Public Of cers -- Electric Utilities' Workers, Electric Regulators' Specialists, IDAE, University Departments and Solar PV Associations -- a 17 Agent Representative or Market Agent -- a 18 Equipment Stealing and Vandalism -- a 19 Communications, Remote Control and Management -- a 20 Pre-inscription, Inscription, Registration Bonds and Fees -- Other (Hardware) -- a 21 Electrical Network/Power Lines Restructuring -- a 22 Faulty Modules, Inverters, and Trackers -- a 23 Energy Costs Associated with the Network Stabilization Required with the Injection of Intermittent Loads -- a 24 Force Majeure, Acts of God and Others: Windstorms, Lighting, Flooding, Hailstorms -- Summary of Energy Costs. , Chapter 7: Results, Sensitivity Analysis, and Conclusions -- Energy Return on Investment for Spanish Photovoltaic Energy in 2008 -- Sensitivity Analysis -- Discussion -- Conclusion -- References -- Index.
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  • 2
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Endangered ecosystems. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (177 pages)
    Edition: 1st ed.
    ISBN: 9783319478210
    Series Statement: Lecture Notes in Energy Series ; v.36
    DDC: 333.79
    Language: English
    Note: Intro -- Preface -- Acknowledgements -- Contents -- Energy and Investments -- 1 Investments -- Reference -- 2 The Development of the Laws of Thermodynamics -- 2.1 The History of Our Understanding of Energy -- 2.2 Heat Energy -- 2.3 Developing the Laws of Thermodynamics -- 2.4 Understanding the Laws of Thermodynamics Today -- 2.5 Implications of the Second Law -- 2.6 The Second Law and Efficiencies -- Reference -- 3 About Energy -- 3.1 What Is Energy? -- 3.2 Biology -- 3.3 Quantity of Energy -- 3.4 Exergy and Emergy -- 3.5 Quality of Energy -- 3.6 Types of Energy -- 3.7 Energy Density -- 3.8 Power -- References -- 4 Energy and the Physical World -- 4.1 Main Sources of Energy on Earth -- 4.2 Hadley Cells -- 4.3 "Investments" by Nature -- 4.4 The Formation of Fossil Fuels -- 4.5 Oil -- 4.6 Natural Gas -- 4.7 Unconventional Petroleum: The Fracking Revolution -- 4.8 Coal -- References -- Energy and Biology -- 5 The Ecological Theater and the Evolutionary Play -- 5.1 Energy and Biology -- 5.2 Fuels -- 5.3 Metabolism -- References -- 6 Energy Return on Investment as Master Driver of Evolution -- 6.1 Darwinian Evolution -- 6.2 Fitness -- 6.3 What Determines the Distribution and Abundance of Species? -- 6.4 Energy as the Master Resource for Evolution -- 6.5 Energy Return on Investment as Master Driver -- 6.5.1 A Special Section for Fly Fishers -- 6.5.2 EROI and the Growth of Tits -- 6.6 Energy Return on Investment as the Means of Obtaining Darwinian Fitness -- References -- 7 Maximum Power and Biology -- 7.1 History -- 7.2 Maximum Power for One Process -- 7.3 Maximum Power for Systems -- 7.4 Proposals for Maximum Power Principle as the 4th Thermodynamic Law -- 7.5 Conclusion -- Acknowledgments -- References -- Energy and Human Economies -- 8 Energy in Early Human Economies -- 8.1 Application to Our Early Ancestors -- 8.2 Hunter-Gatherers. , 8.3 Agriculture and Deforestation -- 8.4 Were Early Human Societies Sustainable? -- 8.5 Expense of Energy to Early Civilizations -- 8.6 EROI Analyses Over Very Long Periods of Time -- References -- 9 Fossil Fuels -- 9.1 Economic Implications of Fossil Fuels -- 9.2 Efficiency in Energy Use -- 9.3 Fossil Energy and Economics -- 9.4 The Role of BioPhysical Economics -- References -- 10 EROI and Industrial Economies -- 10.1 Introduction -- 10.2 Why Should EROI Change Over Time: Technology Versus Depletion -- 10.3 What We Know About EROI Values and Trends for Different Fuels -- References -- 11 Methods and Critiques for EROI Applied to Modern Fuels -- 11.1 How We Do EROI Analysis: More Detail -- 11.2 Energy Return Data -- 11.3 Energy Investment Data -- 11.3.1 National Energy Accounts of Direct Energy Used -- 11.3.2 National-Level Accounts for Capital Expenditures and Other Indirect Uses -- 11.3.3 Process Analysis -- 11.4 Quality Corrections -- 11.5 Estimating EROI at Point of Use -- 11.6 EROI of Obtaining Energy Through Trade -- 11.7 Methodological Issues, Problems and Criticisms of EROI -- 11.7.1 Criticisms of EROI Studies: Definitions -- 11.7.2 Differences in Results: Corn-Based Ethanol -- 11.7.3 Differences in Results: Photovoltaic Systems -- 11.7.4 Corrections for Energy Quality -- 11.7.5 Theoretical Versus Empirical Assessments of Electricity Output -- 11.7.6 Boundaries and Comprehensiveness of the Cost Assessments -- 11.7.7 Technological Changes Over Time -- 11.8 Other Issues That Need Consideration That Might Decrease the EROI of Solar Energy: Storage -- 11.9 Exponential Growth of Energy Production -- 11.10 Summary of Critiques -- 11.11 Further Issues in Comprehensiveness of EROI Analysis -- 11.12 Business Services and Taxes -- 11.13 Labor -- Acknowledgments -- References -- 12 The History, Future, and Implications of EROI for Society. , 12.1 Sustainability -- 12.2 Peak Oil: How Long Can We Depend on Oil and Other Fossil Fuels? -- 12.3 New Technologies to the Rescue? -- 12.4 EROI -- 12.5 What Level EROI Does Society Need? -- 12.6 Economic Impacts of Peak Oil and Decreasing EROI -- 12.6.1 Secular Stagnation -- 12.7 Developing Energy Policy -- References -- Index.
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  • 3
    Publication Date: 2022-05-25
    Description: Author Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Biogeochemistry 98 (2010): 139-151, doi:10.1007/s10533-009-9382-0.
    Description: Inspired by previous studies that have indicated consistent or even well-constrained relationships among carbon (C), nitrogen (N) and phosphorus (P) in soils, we have endeavored to explore general soil C:N:P ratios in China on a national scale, as well as the changing patterns of these ratios with soil depth, developmental stages and climate; we also attempted to determine if well-constrained C:N:P stoichiometrical ratios exist in China’s soil. Based on an inventory data set of 2,384 soil profiles, our analysis indicated that the mean C:N, C:P and N:P ratios for the entire soil depth (as deep as 250 cm for some soil profiles) in China were 11.9, 61 and 5.2, respectively, showing a C:N:P ratio of ~60:5:1. C:N ratios showed relatively small variation among different climatic zones, soil orders, soil depth and weathering stages, while C:P and N:P ratios showed a high spatial heterogeneity and large variations in different climatic zones, soil orders, soil depth and weathering stages. No well-constrained C:N:P ratios were found for the entire soil depth in China. However, for the 0-10 cm organic-rich soil, where has the most active organism-environment interaction, we found a well-constrained C:N ratio (14.4, molar ratio) and relatively consistent C:P (136) and N:P (9.3) ratios, with a general C:N:P ratio of 134:9:1. Finally, we suggested that soil C:N, C:P and N:P ratios in organic-rich topsoil could be a good indicator of soil nutrient status during soil development.
    Description: This study was supported by NASA Interdisciplinary Science Program (NNG04GM39C), NASA Land Cover and Land Use Change Program (NNX08AL73G_S01), and the Chinese Academy of Science ODS Program.
    Keywords: Carbon ; Nitrogen ; Phosphorus ; Stoichiometry ; China
    Repository Name: Woods Hole Open Access Server
    Type: Preprint
    Format: application/pdf
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 255 (1975), S. 136-138 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A nearly continuous record of the atmospheric concentration of CO 2 has been maintained for the past 16 yr at Mauna Loa, Hawaii (19.5N, 155.6W, 3,400 m altitude7'9'10) which is located within the well-mixed tradewind belt. The annual variation in CO2 content there is 6 p.p.m., roughly ...
    Type of Medium: Electronic Resource
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  • 5
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    Unknown
    New York : Periodicals Archive Online (PAO)
    Population and environment. 15:6 (1994:July) 505 
    ISSN: 0199-0039
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Sociology
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Environmental management 1 (1977), S. 5-7 
    ISSN: 1432-1009
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1009
    Keywords: Bolivia ; Carbon exchange ; Costa Rica ; Land use ; Panama ; Peru ; Tropics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Our group, composed of modelers working in conjunction with tropical ecologists, 3 has produced a simulation model that quantifies the net carbon exchange between tropical vegetation and the atmosphere due to land use change. The model calculates this net exchange by combining estimates of land use change with several estimates of the carbon stored in tropical vegetation and general assumptions about the fate of cleared vegetation. In this report, we use estimates of land use and carbon storage organized into sixlife zone (sensu Holdridge) categories to calculate the exchange between the atmosphere and the vegetation of four tropical countries. Our analyses of these countries indicate that this life zone approach has several advantages because (a) the carbon content of vegetation varies significantly among life zones, (b) much of the land use change occurs in life zones of only moderate carbon storage, and (c) the fate of cleared vegetation varies among life zones. Our analyses also emphasize the importance of distinguishing between temporary and permanent land use change, as the recovery of vegetation on abandoned areas decreases the net release of carbon due to clearing. We include sensitivity analysis of those factors that we found to be important but are difficult to quantify at present.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Environmental management 10 (1986), S. 331-334 
    ISSN: 1432-1009
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Environmental management 10 (1986), S. 577-580 
    ISSN: 1432-1009
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1009
    Keywords: Carbon exchange ; Computer calculation ; Land use change ; Sensitivity analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The rationale, assumptions, structure and basic mathematical functions of the model used to produce the simulation results reported in the first two articles of this series are described in detail. Sensitivity analysis indicates that the most important parameters in the model, and, presumably, in the carbon exchange between tropical forests and the atmosphere, are: (a) the conversion rate of forests to permanent pasture and agriculture, (b) the changes that are occurring and have occurred in the shifting cultivation system, and (c) the fate of cleared vegetation. Although it is not possible to validate the model against direct measurements of carbon exchange, the model has been proven robust when subject to a series of explicit analyses and comparisons with other assessments.
    Type of Medium: Electronic Resource
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