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 44 for “"Fuel Cost"”.
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Power system transmission enhancement through storage
… the same storage schedule and daily fuel cost. Results on two storage system with QP method suggest that the coordination between storage units can help to transfer more power from base units and reduce total fuel cost in peak hours.
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Decarbonizing the Global Shipping Industry: Evaluating Pathways for Alternative Fuels
… industry, which relies heavily on fossil fuels and traditional internal combustion engines for propulsion, is critical to mitigating climate change and limiting global temperature rise. This thesis evaluates decarbonizing pathways for the global shipping industry through alternative fuels. …
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Minimum Time/Minimum Fuel Control of an Axisymmetric Rigid Body
… during flight in a minimum time or minimum fuel fashion. This thesis will present a minimum time/fuel control solution to reorienting an axisymmetric rigid body using eigenaxis maneuvers. Any fixed desired attitude can be achieved by rotating the rigid body about its eigenaxis. While an …
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Development of novel energy systems for LNG locomotives
… the emissions problems in the current diesel fueled locomotives with economic benefits using liquefied natural gas (LNG) locomotives. Six novel energy systems for LNG locomotives are developed with different prime movers and fuel combinations. The systems are analyzed energetically and …
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Hydrogen Powered Cars and Trucks: Is there a role for them in the electrified U.S. future?
… emissions are needed to limit global warming. Fuel Cell Electric Vehicles (FCEV) offer an attractive alternative for decarbonizing the transportation sector for both Light Duty and Heavy Duty categories. The cost of hydrogen fuel cell-related technologies are decreasing rapidly and FCEVs may …
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The Impact of Using Derivatives as a Hedging Instrument in Supporting Global Development Trends: An Analysis of the African Aviation Sector
… to the volatility in commodity markets, as fuel expenditure generally makes up the single largest cost component of an airline's operating expense. This dissertation, therefore, investigates the relationship between fuel hedging and the firm value of commercial airlines in order to establish …
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The Environmental Effects of Hydroelectric Power in Arctic Scandinavia
… is caused by a hydroelectric system, there is no fuel cost, and no consumption of natural resources that are irreplaceable and essential for other purposes. This said, in recent years, the significant adverse environmental effects of large hydro projects are being identified as a cause for …
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Dual Satellite Coverage using Particle Swarm Optimization
… objectives include minimizing the total fuel cost and the average angle between the satellites' radius vectors. This orbit configuration is developed using a series of instantaneous burns applied at each satellite's perigee. An analysis of the optimal solutions generated by a Particle …
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Modeling and Multi-Objective Optimization of the Helsinki District Heating System and Establishing the Basis for Modeling the Finnish Power Network
… included by introducing non-linear functions for costs, emissions, and the exergetic efficiency. A fuel cost sensitivity analysis is conducted on the system by considering ten combinations of fuel costs based on high, medium, and low prices for each fuel. The solution sets, called Pareto fronts, …
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Feasibility and technoeconomic analysis of small-scale biomass to power system with novel producer gas cleanup technology
… at 22kWe. This corresponds to a capital cost of $9,600, which is 34% of the retail price of current similar systems. This results in a levelized cost of energy range of $0.07 per kWh to $0.34 per kWh depending on the cost of biomass feedstock. This range is large for a levelized cost of …
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Toward joint water-power electric grid modeling
… on generation technology (i.e., prime mover), fuel source, cooling technology, and climate. By one estimate, 49\% of all U.S. water withdrawals are used for thermoelectric cooling, with the state of Illinois ranking second overall in terms of thermoelectric-cooling withdrawal. This work …
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A techno-economic and environmental assessment of hydroprocessed renewable distillate fuels
… thesis presents a model to quantify the economic costs and environmental impacts of producing fuels from hydroprocessed renewable oils (HRO) process. Aspen Plus was used to model bio-refinery operations and supporting utilities. Material and energy balances for electricity, carbon dioxide, and …
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Enhancing the effectiveness of the utility energy supply chain in integrated steel manufacturing
… 2--3 of total US energy consumption. The energy costs account for 12--15% of the total cost of manufacturing steel. Cogeneration is done by most of the integrated steel producers for on-site electricity generation. The steel industries use different utility systems, and 90% of the industry uses …
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Modelling the global prospects and impacts of heavy duty liquefied natural gas vehicles in computable general equilibrium
… adoption of natural gas vehicles such as vehicle costs, infrastructure costs, and fuel economics was performed. The fuel cost analysis showed that assuming production and distribution at scale, liquefied natural gas (LNG) can be competitive as a diesel fuel substitute for heavy duty vehicles in …
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A predictor-corrector guidance algorithm design for a low L/D autonomous re-entry vehicle
… craft with a mission plan that calls for low cost, speedy retrieval, and quick turn-around-times for successive flights. A guidance scheme that best adheres to these goals and captures the vehicle's capability is desired. During re-entry, the PL-RLV's second stage, the Precision Landing …
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Dynamics and control of electromagnetic satellite formations
… that may need constant expenditure of fuel or at least fuel is required for formation reconfiguration. Electromagnetic Formation Flying (EMFF) is a novel concept that uses superconducting electromagnetic coils to provide forces and torques between different satellites in a formation …
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Reliability and cost/worth evaluation of generating systems utilizing wind and solar energy
… years due to adverse environmental impacts and fuel cost escalation associated with conventional generation. At the present time, wind and/or solar energy sources are utilized to generate electric power in many applications. Wind and solar energy will become important sources for power …
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A weather related causal analysis on consolidated delay at Newark Liberty International Airport
… airlines, in terms of operating procedures and fuel cost implications. These findings can further alter the balance between efficiency, public safety and airline costing affecting all major stakeholders as this dissertation will investigate.
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How to utilize hedging and a fuel surcharge program to stabilize the cost of fuel
… to approach a volatile priced commodity, diesel fuel. It focuses on the impacts of hedging for companies that are directly impacted through the consumption of diesel fuel in addition to companies that are indirectly impacted because they outsource their transportation. It examines the impact of a …
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