Download or read book High Tonnage Forest Biomass Production Systems from Southern Pine Energy Plantations written by and published by . This book was released on 2014 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, a high-tonnage harvesting system designed specifically to operate efficiently in the expected stand types of a bioenergy scenario was built, deployed, and evaluated in a production setting. Stands on which the system was evaluated exhibited the heavy stocking levels (> 600 stems per acre) and tree size distributions with significant volume in small stems (down to 2" DBH) that were expected in the modified energy plantation silvicultural approach. The harvest system also was designed to be functional in the traditional plantation stands dominating the commercial forestry landscape in the region. The Tigercat 845D feller buncher, which was a prototype machine designed for the high tonnage harvest system, used a boom-mounted prototype DT1802 shear felling head and incorporated a number of options intended to maximize its small-stem productivity, including: a high-speed shear severing system that was cheaper to operate than a saw; a large-pocket felling head that allowed larger accumulations of small stems to be built before expending the time to drop them for the skidder; efficient, low ground pressure, tracked carrier system to decrease the amount of maneuvering, saving time and minimizing soil disturbance; and various energy-saving devices to lower fuel costs and minimize air quality impacts. Overall, the feller buncher represented a quantum advance in small-stem harvesting technology. Extensive testing showed the machine's production rate to be relatively insensitive to piece size, much less so than comparable traditional equipment. In plantation stands, the feller buncher was able to produce approximately 100 green tons of biomass per productive machine hour (PMH), and in natural stands, it produced nearly 120 green tons per PMH. The ability of the high tonnage feller buncher to maintain high productivity in stands with smaller diameter stems is something that has not been achieved in previous feller buncher designs. The Tigercat 845D feller buncher is now a production machine for Tigercat and is being sold in their current product line. The high-speed felling system was paired with a Tigercat 630D skidder and high-capacity grapple; one that could match the felling productivity when pulling small stems. The harvesting system minimized hourly costs using a single, high-capacity skidder (with a single operator), rather than two smaller ones, which is the traditional practice. The skidder itself can be considered a mid-range size and had an engine no larger than other machines in its class, but it incorporated a very large capacity 25 ft2 grapple. The large grapple is well suited to grabbing and hauling a large bunch of small-diameter trees, as produced by the high tonnage feller buncher. The grapple worked effectively in larger stems as well, but its ability to carry large numbers of small stems meant the average payload did not drop as stand DBH decreased. Tests with the machine indicated its travel speeds were nearly the same as, or perhaps slightly better than, conventionally equipped skidders, but grapple capacity was 75% larger. Productivity and cost per ton of the new skidder were better than conventional skidders for average skid distances of any length greater than 100 feet. Measured skidder productivity was as high as 143 gt/PMH. Its productivity exceeded that of the high-capacity feller buncher for skid distances out to nearly 700 feet, so system productivity could be expected to remain high for stands of a size typical in the southern U.S. The Tigercat 630D skidder is a production machine for Tigercat and the large grapple can now be ordered by customers using it for small diameter trees. When the feller buncher and skidder are analyzed as a two-machine system, overall productivity is fixed at the level of the least productive machine. Results from a set of side-by-side tests in the same density stand with conventional feller bunchers and skidders showed that the high tonnage system produced 97 gt/P ...

Download or read book Forest Bioenergy written by Ana Cristina Gonçalves and published by Springer Nature. This book was released on 2024-01-02 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive overview of the forest bioenergy, from feedstock production to end products. The book presents the state of the art of forest biomass production, assessment, characterization, and conversion into heat and power. It starts with forest sources of biomass and potential availability. Continues with the characterization of the forest stands and the availability of biomass for energy per stand structure, including stands managed for timber, non-wood products, and energy plantations. It follows with biomass evaluation and monitoring considering data sources, modeling methods, and existing models. are also addressed. After the initial focus on forest biomass production and estimation, this resource is assessed as a feedstock for energy conversion. Not only current, but also emerging biofuels obtained from forest biomass are considered. Established and emerging conversion technologies for the production of bio-heat and bio-power are examined and the impacts of the conversion systems presented.

Download or read book Wood Energy in Developed Economies written by Francisco X. Aguilar and published by Routledge. This book was released on 2014-08-27 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been a recent resurgence of interest in wood energy as part of a sustainable range of renewable energy options. This book addresses the current gap in the energy and public policy literature for a reference book that compiles the most-recent wood energy assessments, and evaluates current and potential future wood energy uses and the role for public policy to foster efficient use of the most-widely consumed renewable energy in the world. It brings together a group of expert authors covering topics from forest management, operations and engineering, to socio-economics and energy policy perspectives. It thus covers practical issues such as silviculture, harvesting, processing, comparative cost estimates, public policy tools and market effects. As such the book provides a comprehensive review of the complex dimensions of wood energy as well as practical guidance for professionals, researchers and advanced students. It will also provide invaluable guidance for economic development agencies, practitioners and policy-makers, when evaluating the impacts of wider wood energy adoption as part of a strategy for sustainable energy generation. The main focus is on industrialised production and developed economies, particularly the USA and Europe.

Download or read book Bioenergy from Wood written by Thomas Seifert and published by Springer Science & Business Media. This book was released on 2013-12-02 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written for scientists and practitioners interested in deepening their knowledge of the sustainable production of bioenergy from wood in tropical and sub-tropical countries. Utilising the value chain concept, this book outlines the necessary aspects for managing sustainable bioenergy production. A wide range of topics is covered including biomass localization, modelling and upscaling, production management in woodlands and plantations, and transport and logistics. Biomass quality and conversion pathways are examined in order to match the conversion technology with the available biomass. A section is dedicated to issues surrounding sustainability. The issues, covered in a life-cycle assessment of the bioenergy system, include socio-economic challenges, local effects on water, biodiversity, nutrient-sustainability and global impacts. Through this holistic approach and supporting examples from tropical and sub-tropical countries, the reader is guided in designing and implementing a value chain as the main management instrument for sustainable wood.

Download or read book Solar Energy Update written by and published by . This book was released on 1981 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy From Forest Biomass written by W. Ramsay Smith and published by Elsevier. This book was released on 2012-12-02 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy from Forest Biomass is a book that emerged from the papers presented at the International Union of Forestry Research Organization (IUFRO) XVII World Congress held in Kyoto, Japan. This book includes 18 papers representing different authors from nine countries. The book is divided into four parts. The first part contains discussions of the various researches on fuel plantations around the world, as well as harvesting techniques and associated costs. The second part discusses information on the actual and potential availability of biomass from sources other than fuel plantations. This part also examines the different types of biomass fuels currently used in Japan. The third part deals with the intermediate technology that can be used, such as charcoal production and direct combustion. The last part discusses the innovations in producing energy, such as gasification and liquidification. This book will be useful to graduate and undergraduate students, researchers, scientists, and readers who are interested in the use of biomass for energy purposes.

Download or read book Proceedings of the 1984 Southern Forest Biomass Workshop written by J. R. Saucier and published by . This book was released on 1985 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 1983 Southern Forest Biomass Workshop written by Southern Forest Biomass Working Group. Workshop and published by . This book was released on 1984 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of the Feasibility of Forest Biomass Production from Pine Plantations in Georgia written by Josh Love and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Bioenergy Crop Plants written by Chittaranjan Kole and published by CRC Press. This book was released on 2012-03-22 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the world’s population is projected to reach 10 billion or more by 2100, devastating fossil fuel shortages loom in the future unless more renewable alternatives to energy are developed. Bioenergy, in the form of cellulosic biomass, starch, sugar, and oils from crop plants, has emerged as one of the cheaper, cleaner, and environmentally sustainable alternatives to traditional forms of energy. Handbook of Bioenergy Crop Plants brings together the work of a panel of global experts who survey the possibilities and challenges involved in biofuel production in the twenty-first century. Section One explores the genetic improvement of bioenergy crops, ecological issues and biodiversity, feedstock logistics and enzymatic cell wall degradation to produce biofuels, and process technologies of liquid transportation fuels production. It also reviews international standards for fuel quality, unique issues of biofuel-powered engines, life-cycle environmental impacts of biofuels compared with fossil fuels, and social concerns. Section Two examines commercialized bioenergy crops, including cassava, Jatropha, forest trees, maize, oil palm, oilseed Brassicas, sorghum, soybean, sugarcane, and switchgrass. Section Three profiles emerging crops such as Brachypodium, diesel trees, minor oilseeds, lower plants, Paulownia, shrub willow, sugarbeet, sunflower, and sweet potato. It also discusses unconventional biomass resources such as vegetable oils, organic waste, and municipal sludge. Highlighting the special requirements, major achievements, and unresolved concerns in bioenergy production from crop plants, the book is destined to lead to future discoveries related to the use of plants for bioenergy production. It will assist in developing innovative ways of ameliorating energy problems on the horizon.

Download or read book Miscellaneous Publication written by and published by . This book was released on 1981 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy from Biomass written by and published by . This book was released on 1987 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Production from Hardwoods Growing on Southern Pine Sites written by Joseph Karchesy and published by . This book was released on 1979 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The raw material. Direct combustion. Gasification. Pyrolysis. Other process. Industrial use of wood energy. Economics. The future.

Download or read book Research Accomplished written by and published by . This book was released on 1979 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Utilization of Hardwoods Growing on Southern Pine Sites Products and prospective written by Peter Koch and published by . This book was released on 1985 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sustainable Aviation Fuels written by Michael P. Wolcott and published by Frontiers Media SA. This book was released on 2022-11-08 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Utilization of Hardwoods Growing on Southern Pine Sites written by Peter Koch and published by . This book was released on 1985 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt: