Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 57 for “"carbon-free"”.
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A case for electrifying heat in end-use residential sector towards carbon-free buildings
… will increase as the grid trends toward lower carbon intensity in the decades ahead. Electrification of residential heating systems, by eliminating site fossil fuel use for heating, provides an important element of ultimately achieving carbon-free buildings. The objective of this research is to …
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Commercial production of carbon free chromium or ferrochrome by leaching from the ore and electrolysis
Thesis: M.S., Massachusetts Institute of Technology, Department of Metallurgy, 1926
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Innovative energy systems and processes based on hydrogen from RES and its derivatives in the energy transition process
… renewable energy-powered energy systems, as a decarbonization pathway in the energy sector. Climate change mitigation and the transition to carbon-free energy systems are challenged by the inherent intermittency of renewable sources, which affects grid stability and can lead to energy …
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ΠΥΡΟΧΩΜΑΤΑ ΦΩΣΦΟΡΙΚΟΥ ΤΥΠΟΥ. ΓΡΑΜΜΙΚΕΣ ΜΕΤΑΒΟΛΕΣ ΚΑΤΑ ΤΗΝ ΠΗΞΗ ΣΤΟ ΠΕΡΙΒΑΛΛΟΝ ΚΑΙ ΤΗΝ ΥΓΡΟΣΚΟΠΙΚΗ ΠΗΞΗ. ΠΕΙΡΑΜΑΤΙΚΗ ΜΕΛΕΤΗ
… INVESTMENT MATERIALS DURING THEIR FREE AS WELL AS HYGROSCOPICAL SETTING ARE INVESTIGATED IN THE PRESENT EXPERIMENTAL WORK: TWO FACTORS NAMELY THE CONCENTRATION OF THE SPECIAL MIXING FLUID AND THE L/P RATIO WERE CONSIDERED. SIX CARBON FREE PHOSPHATE-BONDED INVESTMENT MATERIALS WERE …
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Estimating global warming from anthropogenic heat emissions
… or even amplified by the exploration of new carbon-free energy sources like fusion power. In such a scenario, the impacts of the AHF become a relevant factor for anthropogenic post-greenhouse gas climate change on the global scale, as well. This master thesis aims at estimating the climate …
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Experimental and ab initio studies of oxide interfaces for photoelectrochemistry
… spurred a research thrust towards renewable, carbon-free sources of energy. Photoelectrochemical (PEC) approaches are particularly attractive, combining energy capture from the sun with storage in the form of hydrogen or hydrocarbon fuel. However, there are significant materials challenges to …
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Combustion and emission characteristics of ammonia blended fuels in a spark-ignited engine
… potential as an alternative fuel because it is carbon-free and can be produced renewably. In this study the combustion and emission characteristics of ammonia blended fuels are investigated for spark ignited engines. Gasoline and heptane are explored as combustion promoters for ammonia. …
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Computational frameworks to enable accelerated development of defect-tolerant photovoltaic materials
Widespread adoption of carbon-free energy technologies, including and especially photovoltaics (PV), is vital to address the issue of climate change. Absent sweeping policy action, this will only happen if these technologies become the most economically viable energy source. While PV has become …
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The potential for a nuclear renaissance : the development of nuclear power under climate change mitigation policies
… if no action is taken. Nuclear power, a nearly carbon-free source of electricity, could contribute significantly to climate change mitigation by replacing conventional fossil-fueled electricity generation technologies. To examine the potential role of nuclear power, an advanced nuclear …
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Used Nuclear Fuel Actinide Management in a Sodium- Cooled Heterogeneous Innovative Burner Reactor
… to the grid becoming a cost-effective source of carbon-free energy production. Advances in nuclear computer codes have allowed for the successful modeling of SFR designs. Three-dimensional codes based on stochastic interaction of particles such as the Monte Carlo Neutron Photon (MCNP) transport …
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Light Water Reactor Loading Pattern Optimization with Reinforcement Learning Algorithms
… (BWRs), remained the largest single source of carbon-free energy. They provided approximately half of the nation’s carbon-free electricity and under 20% of total electricity throughout the year. Ensuring the competitiveness of these nuclear assets is crucial for maintaining their role in …
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Fabrication of a luminescent solar concentrator that minimizes self-absorption losses using inter-chromophore energy transfer
The projected need for carbon-free power during this century is immense. Solar power offers the largest resource base to supply this need, but in light of recent silicon shortages, it is an open question whether silicon photovoltaics can keep pace with demand. The development of economical …
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Design and construction of high-temperature, high-vacuum tensile tester for fusion reactor materials
Fusion energy is a promising carbon-free, limitless source of energy that could contribute to mitigating global climate change. One of the critical challenges in realizing fusion energy is the survival of structural materials in the extreme environment of a fusion device. Specifically, materials …
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Conceptual Structural Design of Core Components for a Horizontal, Compact HTGR
… HTGRs hold significant potential in decarbonizing industrial process heat markets. Collaborators at MIT recently introduced the Horizontal, Compact HTGR (HC-HTGR), which expects to see a 20% reduction in overall cost with respect to vertical HTGRs. The horizontal re-orientation and …
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Enabling the simulation of helium transport in lithium for fusion devices
Nuclear fusion is a potential source of abundant, carbon-free energy. However, creating a nuclear fusion device with the ability to efficiently produce energy is a challenge to modern engineering. The tokamak is a device that has been designed to produce power through nuclear fusion. Finding the …
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Energy security in Asia - Himalayan hydropower
… in the Himalayan region and China. Hydropower’s carbon free and sustainable image has come under threat thanks to increasing concerns over climate change, population growth, and energy demand. Existing implications and evolving externalities are increasingly threatening the feasibility of current …
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Combustion and pollutant characteristics of IC engines fueled with hydrogen and diesel/hydrogen mixtures using 3D computations with detailed chemical kinetics
… mechanism with parameters adjusted for a carbon-free fuel. The computational results were first validated against experimental results with different equivalence ratios and then employed to examine a spark-ignition engine fueled with hydrogen under different operating conditions. …
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Liquid Sodium Stratication Prediction and Simulation in a Two-Dimensional Slice
… nuclear power is uniquely positioned to offer carbon-free and reliable electricity. In many markets, nuclear power faces strong headwinds due to competition with other fuel sources and prohibitively high capital costs. Small Modular Reactors (SMRs), such as the proposed Advanced Fast Reactor …
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Thermodynamic properties of metal hydride nanostructures
… its high abundance and its potential role in a carbon-free cycle. The high gravimetric and volumetric storage capacities of metal hydrides make them ideal hydrogen carriers if the limitations associated with their slow hydrogen release kinetics, their high hydrogen release temperatures, and …
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