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All Theses
Title
Author
Date of Award
Fossil fuels are the largest sources of energy for electricity generation. Natural gas was the largest source—about 40%—of U.S. Electricity generation in 2020. Natural gas is used in steam turbines and gas turbines to generate electricity. Coal was the third-largest energy source for U.S. Electricity generation in 2020—about 19%. What Apple isn't saying is what kind of hydrogen fuel cell we can expect. One of the barriers that the automobile industry has had with regards to hydrogen fuel cells is finding a reliable source of hydrogen. Most hydrogen gas produced today is obtained by processing fossil fuels, and the rest uses electrolysis which also requires existing energy. Fossil's new Gen 5E smartwatches are paired-down versions of last year's Gen 5, and they come in more sizes and at a more affordable price. High school never ends mac os. There are three 44mm styles and four 42mm.
December 2019
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Environmental Engineering and Earth Sciences
Committee Member
Lindsay Shuller-Nickles
Committee Member
Michael Carbajales-Dale
Committee Member
Timothy DeVol
Abstract
In an ever-evolving energy market, it is vital that nuclear technology adapts to become more economically and environmentally feasible. The promising economics and flexibility of small modular reactors (SMRs) may make them the technology of the future for the nuclear industry, offering a simple solution to many of the problems that have plagued the industry in the last decade. Though the economics of SMRs is often a topic of discussion, it is also important to understand the environmental aspects of this technology when implemented in a U.S. market. A life cycle assessment (LCA) of small modular reactors using a U.S. nuclear fuel cycle has been performed to this end, taking care to use U.S. technologies and facilities in every stage of the assessment where possible. The resulting impacts per MWh of electricity produced were found to be 7.64 m3 for water depletion, 0.88 kg oil-eq for fossil depletion, 2.03 kg Fe-eq for metal depletion, 4.55 kg CO2-eq for climate change, 18.02 1,4-DB-eq for human toxicity, and 441.07 kBq 235U-eq for ionizing radiation. In terms of climate change, the results were found to be comparable to the 8.4 kg CO2-eq found by Carless et. al1 for the Westinghouse SMR and like the 3.89 kg CO2-eq found by adjusting the findings of the National Energy Technology Laboratory.2 Most of the climate change impact was found to be in the fuel processing stages, due to high electricity and fossil fuel demands, as well as in construction because of concrete production. These assumptions were verified by performing a sensitivity analysis on electricity source, mine types, transportation, and material disposition during decommissioning. By comparison to other energy generators, nuclear energy, in general, performs similarly to renewable resources with respect to climate change, and small modular reactors perform slightly better than their larger counterparts. These results aid in confirming the overall feasibility of small modular reactor technology in an energy market concerned with climate change impacts.
Recommended Citation
Godsey, Kara Michelle, 'Life Cycle Assessment of Small Modular Reactors Using U.S. Nuclear Fuel Cycle' (2019). All Theses. 3235.
https://tigerprints.clemson.edu/all_theses/3235
Recommended Citation
Godsey, Kara Michelle, 'Life Cycle Assessment of Small Modular Reactors Using U.S. Nuclear Fuel Cycle' (2019). All Theses. 3235.
https://tigerprints.clemson.edu/all_theses/3235
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Home > City College > Dissertations and Theses > 899
Dissertations and Theses
Title
Author
Date of Award
2018
Document Type
Thesis Pass on my words mac os.
Department
Engineering
First Advisor
Ahmed Mohamed
Second Advisor
Santa claus and the cats and the bad guys mac os. Michael Bobker
Keywords
Building Electrification, Electric Grid, Fossil Fuel, Building Systems, New York City
Abstract
New York City's commitment to reduce Greenhouse Gases (GHG) emissions 80% by 2050 (80X50) requires a deep citywide conversion from fuel combustion systems to more efficient technologies, such as air-source heat pumps. Moreover, this challenging goal relies also on a much cleaner grid with the majority of electrical generation being provided by renewable sources, such as solar and wind. In this regard, building electrification is being considered as a possible solution in order to reduce emissions and maximize the efficiency of the energy utilization as well as improve the comfort of the indoor environment.
Under the assumption of a cleaner electric grid, this thesis shows that a citywide building electrification will translate into remarkable fossil fuel savings and carbon reduction. This project also compares the performance of traditional space heating and/or cooling systems, which mostly use oil or natural gas as a fuel versus electrified technologies, such as air source heat pumps (ASHP). To conduct this comparison, the efficiency, the quantity of fuel consumed and the related environmental impact of the different technologies will be investigated.
A model is used to compare fossil fuel use by on-site combustion systems with fossil fuel input to the power system for equivalent heating with heat pumps under various scenarios.
https://eu-free.mystrikingly.com/blog/crimson-cursed-anne-mac-os. Parameters used for the various systems will include efficiency (e.g. Coefficient of Performance, COP, for heat pumps), input and output energy as well as information about the current status of New York City energy production.
Fossil Fuel Mac Os X
Despot dungeons mac os. Matlab is used to run simulations, manage large data sets as well as draw plots in order to accomplish comparisons and scenario analysis.
Results verify the flexibility of the developed model and show that, under certain conditions of electric grid's renewable sources penetration, the impact of building electrification may have significant benefits in terms of fossil fuel and, consequently, GHGs emission reduction
This cross-disciplinary study involves electrical, mechanical and energy engineering as well as urban sustainability. Ultimately, this thesis aims to help policy makers to make wise decisions based on real data and valuable considerations, specific to New York City and its complex systems. Adr player free download.
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Recommended Citation
Sartori, Mattia, 'Fossil fuel impact of buildings electrification in New York City' (2018). CUNY Academic Works.
https://academicworks.cuny.edu/cc_etds_theses/899
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