Search results: Found 46

Listing 1 - 10 of 46 << page
of 5
>>
Sort by
Sulfur-tolerant natural gas reforming for fuel-cell applications

Author:
ISBN: 9783866444591 Year: Pages: II, 144 p. DOI: 10.5445/KSP/1000014763 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:01:57
License:

Loading...
Export citation

Choose an application

Abstract

An attractive simplification of PEM-FC systems operated with natural gas would be the use of a sulfur tolerant reforming catalyst, but such a catalyst has not been available thus far. In this work it is demonstrated that a tailor made rhodium catalyst retains useful activity for typical sulfur levels in the feed. A brief economic comparison showed however that this alternative process is still less economical than the traditional process employing removal of sulfur components by adsorption.

Structure and Diagenesis in Upper Carboniferous Tight Gas Reservoirs in NW Germany

Author:
ISBN: 9783731507345 Year: Pages: XI, 144 p. DOI: 10.5445/KSP/1000076144 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Ethnology
Added to DOAB on : 2019-07-28 18:37:01
License:

Loading...
Export citation

Choose an application

Abstract

Upper Carboniferous sandstones are important tight gas reservoirs in Central Europe. This field-based study, conducted in a km-scale reservoir outcrop analog (Piesberg quarry, Lower Saxony Basin, NW Germany), focused on the diagenetic control on spatial reservoir quality distribution. Geothermometers were used to characterize a fault-related thermal anomaly. A prototype workflow based on terrestrial laser scanning is presented, which allowed for the automated detection and analysis of fractures.

Life Cycle Assessment on Green Building Implementation

ISBN: 9783038422563 9783038422570 Year: Pages: XIV, 214 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Engineering
Added to DOAB on : 2016-09-02 17:52:30
License:

Loading...
Export citation

Choose an application

Abstract

Greenhouse-gas emissions have become one of the most impacting environmental issues in today’s society. A rapidly increasing trend in global CO2emissions particularly since the early nineties (23.64% since 1990) has led to the generation of about 50,000 million tons of CO2–equivalent (eqv) worldwide in 2010. According to mainstream climate experts, the increasing concentration of greenhouse-gases is having a warming effect on the world climate. To slow down global warming, there is a global focus on reducing greenhouse-gas emissions. Life cycle assessment in green building implementation is the focus of this Special Issue.

Navigating the Future: An Ethnography of Change in Papua New Guinea

Authors: ---
ISBN: 9781760461232 Year: Language: Undetermined
Publisher: ANU Press
Subject: Ethnology --- Medicine (General)
Added to DOAB on : 2017-08-04 11:02:08
License: ANU Press

Loading...
Export citation

Choose an application

Abstract

Navigating the Future draws on long-term ethnographic fieldwork with Kubo people and their neighbours, in a remote area of Papua New Guinea, to explore how worlds are reconfigured as people become increasingly conscious of, and seek to draw into their own lives, wealth and power that had previously lain beyond their horizons. In the context of a major resource extraction project—the Papua New Guinea Liquefied Natural Gas (PNG LNG) Project–taking shape in the mountains to the north, the people in this area are actively reimagining their social world. This book describes changes in practice that result, tracing shifts in the ways people relate to the land, to each other and to outsiders, and the histories of engagement that frame those changes. Inequalities are emerging between individuals in access to paid work, between groups in potential for claiming future royalties, and between generations in access to information. As people at the village of Suabi strive to make themselves visible to the state and to petroleum companies, as legal entities entitled to receive benefits from the PNG LNG Project, they are drawing new boundaries around sets of people and around land and declaring hierarchical relationships between groups that did not exist before. They are struggling to make sense of a bureaucracy that is foreign to them, in a place where the state currently has minimal presence. A primary concern of Navigating the Future is with the processes through which these changes have emerged, as people seek to imagine—and work to bring about—a radically different future for themselves while simultaneously reimagining their own past in ways that validate those endeavours.

Political Ecology of REDD+ in Indonesia

Author:
Book Series: Routledge studies in political economy ISBN: 9781138479319 9781351066020 Year: Pages: 230 Language: English
Publisher: Taylor & Francis
Subject: Agriculture (General) --- Geology --- Earth Sciences
Added to DOAB on : 2019-01-17 11:41:37
License:

Loading...
Export citation

Choose an application

Abstract

Indonesia’s commitment to reducing land-based greenhouse gas emissions&#xD;significantly includes the expansion of conservation areas, but these developments&#xD;are not free of conflicts. This book provides a comprehensive analysis of agrarian&#xD;conflicts in the context of the implementation of REDD+ (Reducing Emissions&#xD;from Deforestation and Forest Degradation) and forest carbon offsetting in&#xD;Indonesia, a country where deforestation is a major issue.&#xD;The author analyzes new kinds of transnational agrarian conflicts which&#xD;have strong implications for global environmental justice in the REDD+ pilot&#xD;province of Jambi on the island of Sumatra. The chapters cover: the rescaling of&#xD;the governance of forests; privatization of conservation; and the transnational&#xD;dimensions of agrarian conflicts and peasants’ resistance in the context of&#xD;REDD+. The book builds on an innovative conceptual approach linking&#xD;political ecology, politics of scale and theories of power. It fills an important&#xD;knowledge and research gap by focusing on the socially differentiated impacts&#xD;of REDD+ and new forest carbon offsetting initiatives in Southeast Asia,&#xD;providing a multi-scalar perspective.&#xD;It is aimed at scholars in the areas of political ecology, human geography,&#xD;climate change mitigation, forest and natural resource management, as well as&#xD;environmental justice and agrarian studies.

Burning Up

Author:
ISBN: 9780745335629 9781786803122 9781786803139 Year: Language: English
Publisher: Pluto Press Grant: Knowledge Unlatched - 102237
Subject: Environmental Sciences
Added to DOAB on : 2019-02-05 09:51:01
License:

Loading...
Export citation

Choose an application

Abstract

Coal, gas and oil have been capitalism's main fuels since the industrial revolution. And yet, of all the fossil fuels ever consumed, more than half were burned in the last 50 years. Most alarming of all, fossil fuel consumption has grown fastest in the last three decades, since scientists confirmed that it is the main cause of potentially devastating global warming. In Burning Up, Simon Pirani recounts the history of fossil fuels' relentless rise since the mid twentieth century. Dispelling explanations foregrounding Western consumerism, and arguments that population growth is the main problem, Pirani shows how fossil fuels are consumed through technological, social and economic systems, and that these systems must change. This is a major contribution to understanding the greatest crisis of our time.

In-situ H2O removal via hydorphilic membranes during Fischer-Tropsch and other fuel-related synthesis reactions

Author:
ISBN: 9783866446403 Year: Pages: IV, 244 p. DOI: 10.5445/KSP/1000022232 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:01:57
License:

Loading...
Export citation

Choose an application

Abstract

The general objective of this thesis was to explore the potential of in-situ H2O removal during fuel-related synthesis reactions with focus on in-situ H2O removal by hydrophilic membranes and by chemical reaction. It is demonstrated that in-situ H2O removal through vapour permeation during CO2 hydrogenation to Fischer-Tropsch hydrocarbons and during DME/DEE synthesis leads to increased conversion and yield levels, which are directly linked to the degree of H2O recovery.

Gas transfer at the air-water interface in a turbulent flow environment

Author:
Book Series: Dissertationsreihe am Institut für Hydromechanik der Universität Karlsruhe (TH) ISSN: 14394111 ISBN: 3937300740 Year: Volume: 2005,4 Pages: IX, 128 p. DOI: 10.5445/KSP/1000003544 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: General and Civil Engineering
Added to DOAB on : 2019-07-30 20:01:58
License:

Loading...
Export citation

Choose an application

Abstract

The gas transfer process across the air-water interface in a ottom-shear-induced turbulent environment was investigated to gain improved fundamental understanding of the physical mechanisms that control the process. For this purpose, it is necessary to reveal the hydrodynamics of the flow field as well as the molecular diffusion and the turbulent transport contributions to the total flux. Therefore, detailed laboratory experiments were conducted to obtain these information.The experiments were performed in a grid-stirred tank using a combined Particle Image Velocimetry - Laser Induced Fluorescence (PIV-LIF) technique that has been developed for these near surface gas transfer measurements. The turbulence characteristics of the velocity near the interface were acquired from the PIV measurements and showed generally good agreement with the theoretical profiles from Hunt & Graham (1978). The LIF technique enabled visualization of the planar concentration fields which provided more insight into the gas transfer mechanisms. The high data resolution allowed detailed quantification of the concentration distribution within the thin aqueous boundary layer. The mean and turbulent fluctuation characteristics of the concentration could be elucidated and the molecular diffusion contribution to the total flux across the interface could be determined. With the combined PIV-LIF technique, which enables simultaneous and spatially synoptic measurements of 2D velocity and concentration fields, the turbulent mass flux term cw and also the total mass flux across the air-water interface could be quantified directly. For the first time, a particular trend can be inferred from the measured mean cw profiles. It could also be shown that the contribution of the turbulent mass flux to the total gas flux is significant. The co-spectra indicated different behavior for the cases with lower and higher turbulent Reynolds numbers.The interrelated interpretation of the obtained results suggest that the gas transfer process is controlled by a spectrum of different eddy sizes and the gas transfer at different turbulence levels can be associated to certain eddy sizes. For high turbulence levels the gas transfer should be asymptotic to the small eddy model, whereas for low turbulence level to the large eddy model. The new results of turbulent mass flux should aid as an excellent database in refining numerical models and developing more accurate models for the prediction of the transfer velocity.

Thin film MOFs (SURMOFs) for application in gas separation

Author:
ISBN: 9783731508830 Year: Pages: XIV, 153 p. DOI: 10.5445/KSP/1000088874 Language: ENGLISH
Publisher: KIT Scientific Publishing
Subject: Biology
Added to DOAB on : 2019-07-30 20:01:59
License:

Loading...
Export citation

Choose an application

Abstract

In this work, the deposition of ZIF-8 surface-anchored metal-organic framework (SURMOF) films was systematically studied. A proper characterization and optimization of the synthesized films was performed and their separation performance was determined. Furthermore, a general description of the system was achieved using the Maxwell-Stefan surface diffusion model.

Ein Ansatz zur Bewertung klimapolitischer Instrumente am Beispiel der Metallerzeugung und -verarbeitung

Author:
Book Series: Produktion und Energie / Karlsruher Institut für Technologie, Institut für Industriebetriebslehre und industrielle Produktion u. Deutsch-Französisches Institut für Umweltforschung ISSN: 21942404 ISBN: 9783731504948 Year: Volume: 11 Pages: XVII, 402 p. DOI: 10.5445/KSP/1000052714 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Astronomy (General)
Added to DOAB on : 2019-07-30 20:02:01
License:

Loading...
Export citation

Choose an application

Abstract

Achieving the ambitious greenhouse gas (GHG) reduction targets set up by German legislation requires political incentives to reduce GHG emissions of energy intensive industries without hampering their international competitiveness. This dissertation therefore analyses the influence of different political instruments (ETS, EEG, EnergieStG, StromStG) on induced emission reductions as well as on relevant economic parameters. Thereby, the focus is set on the metal production.

Listing 1 - 10 of 46 << page
of 5
>>
Sort by