The Fire and Fuels Extension to the Forest Vegetation Simulator
The Fire and Fuels Extension to the Forest Vegetation Simulator

Author: Elizabeth D. Reinhardt

Publisher:

Published: 2003

Total Pages: 222

ISBN-13:

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The Fire and Fuels Extension (FFE) to the Forest Vegetation Simulator (FVS) simulates fuel dynamics and potential fire behavior over time, in the context of stand development and management. Existing models of fire behavior and fire effects were added to FVS to form this extension. New submodels representing snag and fuel dynamics were created to complete the linkages. This report contains four chapters. Chapter 1 states the purpose and chronicles some applications of the model. Chapter 2 details the model's content, documents links to the supporting science, and provides annotated examples of the outputs. Chapter 3 is a user's guide that presents options and examples of command usage. Chapter 4 describes how the model was customized for use in different regions. Fuel managers and silviculturists charged with managing fire-prone forests can use the FFEFVS and this document to better understand and display the consequences of alternative management actions.

Nuclear Fuel Elements
Nuclear Fuel Elements

Author: Brian R. T. Frost

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 284

ISBN-13: 1483155250

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Nuclear Fuel Elements: Design, Fabrication and Performance is concerned with the design, fabrication, and performance of nuclear fuel elements, with emphasis on fast reactor fuel elements. Topics range from fuel types and the irradiation behavior of fuels to cladding and duct materials, fuel element design and modeling, fuel element performance testing and qualification, and the performance of water reactor fuels. Fast reactor fuel elements, research and test reactor fuel elements, and unconventional fuel elements are also covered. This volume consists of 12 chapters and begins with an overview of nuclear reactors and fuel elements, as well as fuel element design and development based on the reactor operator's approach, materials scientist's approach, and interdisciplinary approach. The reader is then introduced to different types of nuclear fuels and their irradiation behavior, considerations for using cladding and duct materials in fuel element design and development, and fuel element design and modeling. The chapters that follow focus on the testing of fuel element performance, experimental techniques and equipment for testing fuel element designs, and the performance of fuels for water reactors. Fuel elements for gas-cooled reactors, fast reactors, and research and test reactors are also described. The book concludes with an assessment of unconventional fuel elements. This book will be useful to fuel element technologists as well as materials scientists and engineers.

Biomass combustion science, technology and engineering
Biomass combustion science, technology and engineering

Author: H. Widell

Publisher: Elsevier Inc. Chapters

Published: 2013-04-04

Total Pages: 33

ISBN-13: 0128087625

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Biomass-fired steam boilers are finding increasing use in industrial-scale applications for both heat and power generation. This chapter compares the main technologies for biomass combustion – spreader stoker, mass burn and biomass bubbling fluidised bed (BFB)/circulating fluidised bed (CFB) – and discusses specific issues to be addressed in the design of biomass-fired steam boiler plants. Examples of recent biomass-to-energy plants are given in order to illustrate how project-specific factors influenced the design. A section is dedicated to non-wood biomass fuels and how their characteristics affect plant design. Conversion of existing coal-fired boilers to biomass firing is also discussed. The final part of the chapter deals with operational issues of biomass-fired plants.

National Oil Companies and Value Creation
National Oil Companies and Value Creation

Author: Silvana Tordo

Publisher: World Bank Publications

Published: 2011-07-13

Total Pages: 149

ISBN-13: 0821388312

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National Oil Companies (NOCs) directly or indirectly control the majority of oil and gas reserves. As such, they are of great consequence to their country's economy, to importing countries' energy security, and to the stability of oil and gas markets. The paper analyzes the available evidence on the objectives, governance and performance of 20 NOCs from both net importing and net exporting countries, and draws conclusions about the design of policies and measures that are more likely to lead to social value creation. NOCs differ from private companies on a number of very important variables, including the level of competition in the market in which they operate, their business profile along the sector value chain, and their degree of commercial orientation and internationalization. Most share some core characteristics: they are usually tied to the 'national purpose' and serve political and economic goals other than maximizing the firm's profits. This paper introduces a conceptual model to analyze value creation by NOCs that takes into consideration their complex objective function. Our analysis aims to answer the following questions: Are certain corporate governance arrangements more suited than others to promote value creation? Is good geology a pre-condition for NOC value creation? Are there benefits from exposing the NOC to competition from private oil companies? Does the development of forward and backward linkages hamper NOC value creation?

The Distributional Implications of the Impact of Fuel Price Increases on Inflation
The Distributional Implications of the Impact of Fuel Price Increases on Inflation

Author: Mr. Kangni R Kpodar

Publisher: International Monetary Fund

Published: 2021-11-12

Total Pages: 34

ISBN-13: 1616356154

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This paper investigates the response of consumer price inflation to changes in domestic fuel prices, looking at the different categories of the overall consumer price index (CPI). We then combine household survey data with the CPI components to construct a CPI index for the poorest and richest income quintiles with the view to assess the distributional impact of the pass-through. To undertake this analysis, the paper provides an update to the Global Monthly Retail Fuel Price Database, expanding the product coverage to premium and regular fuels, the time dimension to December 2020, and the sample to 190 countries. Three key findings stand out. First, the response of inflation to gasoline price shocks is smaller, but more persistent and broad-based in developing economies than in advanced economies. Second, we show that past studies using crude oil prices instead of retail fuel prices to estimate the pass-through to inflation significantly underestimate it. Third, while the purchasing power of all households declines as fuel prices increase, the distributional impact is progressive. But the progressivity phases out within 6 months after the shock in advanced economies, whereas it persists beyond a year in developing countries.