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Fossil fuels --- Energy minerals --- Mines and mineral resources --- National Energy Technology Laboratory (U.S.) --- United States.
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Fossil fuels --- Energy minerals --- Mines and mineral resources --- Research --- National Energy Technology Laboratory (U.S.)
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Forecasting --- Energy management --- Energy technology --- Energy conservation --- Linear models --- Models --- Documentation --- Computer software
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This thesis deals with the development of a model-based adaptive test design strategy with a focus on steady-state combustion engine calibration. The first research topic investigates the question how to handle limits in the input domain during an adaptive test design procedure. The second area of scope aims at identifying the test design method providing the best model quality improvement in terms of overall model prediction error. To consider restricted areas in the input domain, a convex hull-based solution involving a convex cone algorithm is developed, the outcome of which serves as a boundary model for a test point search. A solution is derived to enable the application of the boundary model to high-dimensional problems without calculating the exact convex hull and cones. Furthermore, different data-driven engine modeling methods are compared, resulting in the Gaussian process model as the most suitable one for a model-based calibration. To determine an appropriate test design method for a Gaussian process model application, two new strategies are developed and compared to state-of-the-art methods. A simulation-based study shows the most benefit applying a modified mutual information test design, followed by a newly developed relevance-based test design with less computational effort. The boundary model and the relevance-based test design are integrated into a multicriterial test design strategy that is tailored to match the requirements of combustion engine test bench measurements. A simulation-based study with seven and nine input parameters and four outputs each offered an average model quality improvement of 36 % and an average measured input area volume increase of 65 % compared to a non-adaptive space-filling test design. The multicriterial test design was applied to a test bench measurement with seven inputs for verification. Compared to a space-filling test design measurement, the improvement could be confirmed with an average model quality increase of 17 % over eight outputs and a 34 % larger measured input area.
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This Open Access book builds upon Science and Technology Studies (STS) and provides a detailed examination of how large-scale energy research projects have been conceived, and with what consequences for those involved in interdisciplinary research, which has been advocated as the zenith of research practice for many years, quite often in direct response to questions that cannot be answered (or even preliminarily investigated) by disciplines working separately. It produces fresh insights into the lived experiences and actual contents of interdisciplinarity, rather than simply commentating on how it is being explicitly advocated. We present empirical studies on large-scale energy research projects from the United Kingdom, Norway, and Finland. The book presents a new framework, the Sociology of Interdisciplinarity, which unpacks interdisciplinary research in practice. This book will be of interest to all those interested in well-functioning interdisciplinary research systems and the dynamics of doing interdisciplinarity, including real ground-level experiences and institutional interdependencies.
Sociology --- Energy technology & engineering --- The environment --- Central government policies --- Interdisciplinarity --- energy research --- STS --- Research policy --- energy social research --- Open Access
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In response to growing environmental concerns, particularly climate change, governments have encouraged innovation and adoption of clean technologies through various policy measures. At present more than half a trillion US dollars is being invested annually in clean technologies. Based on the existing literature, this study analyzes whether investments in clean technologies increase productivity. The findings are mixed. Employing firm-level data, the majority of ex-post studies show a positive relationship between clean investments and firms' productivity, especially in the energy-intensive manufacturing sector. Most studies for the transport, building and power sector use an ex-ante, technology or sectoral level analysis instead of ex-post analysis to examine the economics of clean technologies. In the transport sector, transportation services with electricity or hydrogen are still more expensive than that with gasoline and diesel vehicles. Some studies, however, project that cleaner vehicles will be economically attractive within a decade. Many studies report that clean technologies reduce energy consumption and save energy bills in the building sector, although some studies do not agree. Most studies for the power sector indicate that renewable technologies have not yet reduced the average costs of grid electricity because of their intermittency and a smaller share in the total electricity supply.
Clean Energy Technology --- Energy --- Energy Efficiency --- Energy Policies and Economics --- Green Energy --- Private Sector Development --- Private Sector Economics
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Electrical engineering --- Electricity --- Génie électrique --- Electricité --- Periodicals --- Périodiques --- #ANTIL9511 --- Engineering --- Electrical Engineering --- Génie électrique --- Electricité --- Périodiques --- 53.39 electrical energy technology: other. --- Electrical engineering. --- Electricity.
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This open access book presents (selected) new and innovative developments for sustainable and fish-friendly hydropower. It offers unique insights into the challenges, practices and policies of hydropower developments across 8 European countries, providing examples from on-site studies and European-wide analyses. The case studies throughout the book are practical “real-world” examples, which are intended to serve as inspiration for anyone who would like to know more about how solutions for more sustainable hydropower production can be designed and implemented. Hydropower is an important renewable energy source, which, however, can also impact aquatic ecosystems, fish populations and hydro-morphology. EU and national water, environmental and energy legislation strive for sustainable energy and water resource management as well as the protection of important habitats and species. These have an effect on the requirements and decision making processes for hydropower planning, commissioning and operation. With a high variety of measures existing and site-specific conditions as well as national and EU level legal requirements to consider, it can be difficult to determine, what issues to address and which measures to implement.
The environment --- Alternative & renewable energy sources & technology --- Energy technology & engineering --- Hydropower --- Financing Hydropower --- sustainable hydropower --- bypass facilities --- fish passage --- turbine passage
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This Open Access book examines the implications of welfare policy for energy poverty and engages with key conceptual debates at the forefront of energy demand research. Academic work on energy poverty has rarely been brought into conversation with practice-theory-based approaches to energy use and sustainability. This book reveals how novel insights can be made visible through combining these different ways of thinking about energy demand issues. It presents a distinctive approach to energy poverty that places inequalities at the heart of debates about the advancing energy intensity of contemporary societies.
Central government policies --- Sociology --- Energy technology & engineering --- Physical geography & topography --- Geography --- Energy --- Energy Demand --- Energy policy --- fuel poverty --- environmental policy --- Energy Capabilities --- transport poverty