Sökning: "fossil field systems"
Visar resultat 1 - 5 av 30 avhandlingar innehållade orden fossil field systems.
1. Island-based Polygeneration Systems : On the Feasibility of Solar-Biomass-driven Distributed Concepts
Sammanfattning : The colossal risks and challenges posed by climate change require innovative solutions that must fulfil energy service demands sustainably. The concept of small-scale, biomass-based polygeneration (SBP) is one such technological approach, which optimizes locally supplied fuels to provide several energy services like electricity, heating, cooling, potable water, and/or bio-chemical products. LÄS MER
Sammanfattning : Fossil fuels are still the dominant (ca. 80%) energy source in our society. A significant fraction is used to generate electricity with a heat engine possessing an efficiency of approximately 35%. Therefore, about 65% of fossil fuel energy is wasted in heat. LÄS MER
Sammanfattning : This thesis is concerned with the pre-Roman Iron Age on Gotland (500 BC–AD). The remains studied comprise artefacts, fossil field systems, ring-forts, burial localities, and places for iron-making, and more. The author focuses on the landscape formed by these remains, in an attempt to understand the people and society behind them. LÄS MER
4. On design and analysis of synchronous permanent magnet machines for field-weakening operation in hybrid electric vehicles
Sammanfattning : A regular vehicle of today is equipped with an internal combustion engine that runs on either gasoline or diesel, which are fossil fuels from oil reserves that are millions of years old. In all types of combustion processes carbon dioxide and several other emissions are produced. LÄS MER
Sammanfattning : The development of renewable energy technology provides an effective approach to replace fossil fuels for greenhouse gas (GHG) emission. Technological innovation and transfer are the main driving forces in promoting renewable energy usage, because of the better efficiency and economic payback under an emission reduction target. LÄS MER