WorldCat Identities

Berndes, Göran

Overview
Works: 4 works in 18 publications in 1 language and 713 library holdings
Roles: Editor, Author
Classifications: HD9502.5.B542, 333.9539
Publication Timeline
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Most widely held works by Göran Berndes
Advances in bioenergy : the sustainability challenge by Peter Lund( )

8 editions published between 2015 and 2016 in English and held by 551 WorldCat member libraries worldwide

Mobilisation of Forest Bioenergy in the Boreal and Temperate Biomes : Challenges, Opportunities and Case Studies by Göran Berndes( )

8 editions published in 2016 in English and held by 167 WorldCat member libraries worldwide

« Mobilisation of Forest Bioenergy in the Boreal and Temperate Biomes: Challenges, Opportunities, and Case Studies features input from key international experts who identify and analyze the main opportunities and roadblocks for the implementation of sustainable forest biomass supply chains in the boreal and temperate regions. It draws from responses to surveys that were sent to specialists from different countries, compares models of bioenergy deployment, and discusses different types of bioenergy carriers. »--
Advanced biofuel production via gasification – lessons learned from 200 man‐years of research activity with Chalmers' research gasifier and the GoBiGas demonstration plant( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract: This paper presents the main experiences gained and conclusions drawn from the demonstration of a first‐of‐its‐kind wood‐based biomethane production plant (20‐MW capacity, 150 dry tonnes of biomass/day) and 10years of operation of the 2–4‐MW (10–20 dry tonnes of biomass/day) research gasifier at Chalmers University of Technology in Sweden. Based on the experience gained, an elaborated outline for commercialization of the technology for a wide spectrum of applications and end products is defined. The main findings are related to the use of biomass ash constituents as a catalyst for the process and the application of coated heat exchangers, such that regular fluidized bed boilers can be retrofitted to become biomass gasifiers. Among the recirculation of the ash streams within the process, presence of the alkali salt in the system is identified as highly important for control of the tar species. Combined with new insights on fuel feeding and reactor design, these two major findings form the basis for a comprehensive process layout that can support a gradual transformation of existing boilers in district heating networks and in pulp, paper and saw mills, and it facilitates the exploitation of existing oil refineries and petrochemical plants for large‐scale production of renewable fuels, chemicals, and materials from biomass and wastes. The potential for electrification of those process layouts are also discussed. The commercialization route represents an example of how biomass conversion develops and integrates with existing industrial and energy infrastructures to form highly effective systems that deliver a wide range of end products. Illustrating the potential, the existing fluidized bed boilers in Sweden alone represent a jet fuel production capacity that corresponds to 10% of current global consumption. Abstract : The article presents a summary of experiences and conclusions drawn from comprehensive work on a first‐of‐its‐kind wood‐based biomethane production plant and 10years of operation of the 2–4‐MW research gasifier at Chalmers University of Technology in Sweden. We highlight key issues and breakthroughs that led to the successful operation of the gasification‐based plant of GoBiGas. Based on this valuable and unique experience, we give an outline for the commercialization of the technology for a wide range of applications and end‐products
Energy analysis of poplar production for bioenergy in Sweden( )

1 edition published in 2018 in English and held by 1 WorldCat member library worldwide

Abstract: Poplar ( Populus spp.) species are currently not widely grown in Sweden but offer interesting options for future large-scale biomass production for bioenergy. This study assesses the average annual net energy yield and the ratio between the gross energy yield and the total primary energy input for well-managed current commercial poplar production systems in Sweden, with and without fertilization with mineral nitrogen (N). The two systems perform similarly, mainly because the yield response to fertilization is estimated to be small. The average annual net energy yields with and without fertilization are estimated at 190 and 179GJha −1 yr −1, respectively. The corresponding energy ratios are 32 and 34, i.e., the total primary energy inputs correspond to only ca. 3% of the gross energy yield, in both cases. Therefore, improving the net energy yield by increasing the harvest level may be considered the most important objective from an energy performance point of view. To do this, more research is needed in order to develop poplar clones that are better adapted to the Swedish climate and identify in which situations poplar responds well to fertilization. At the same time, by reducing the energy inputs associated with the most fuel-intensive activities (wood-chip transportation, chipping, harvesting, forwarding, and stump lifting), greenhouse gas emissions can be reduced. The results should be interpreted with caution since several parameters, especially the yield response to fertilization and fuel consumption rates, are associated with considerable uncertainties. Highlights: Poplar-based bioenergy can contribute to Swedish energy and climate policy goals. Poplar with and without N-fertilization yield on average 190 and 179GJha −1 yr −1 . Energy ratios are 32 and 34 for poplar with and without N-fertilization. The most energy-intensive activities are transport, wood chipping and harvesting. Increasing yield levels is a major option for improving the energy performance
 
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Languages
English (18)