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.
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Showing 1 to 20 of 177 for “"Capital cost"”.
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Capital cost targets for the optimum synthesis of mass exchange networks
… on thermodynamic grounds, the minimum energy, capital and total costs for a network. These targets are set before any design and can also be optimised at this stage. Special design techniques exist which allow the targets to be met - or closely approached - in practice. The approach has …
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Capital cost evaluation of advanced reactor designs under uncertainty and risk
… increase in global nuclear generation. High capital costs and the risk of overruns and delays may prevent the industry from realizing this new potential. Recent nuclear projects in the U.S. and Europe have averaged cost overruns more than 2x the original estimate. However, new reactor …
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Low temperature glide cycles for energy storage applications: Thermodynamic and capital cost analysis
… times higher than for pumped hydro storage. Capital cost is estimated at 15-45 $/kWh<sub>e</sub> for the specific energy cost and 1300-2900 $/kW for the specific power cost, making this competitive with batteries for long duration storage even under conservative assumptions. Capital cost is …
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Processing cost analysis of the African biofuels industry with special reference to capital cost estimation techniques
… China. A good understanding of the production cost of biofuels, and the availability of robust and indigenous cost estimation models is essential to their eventual commercialization. However, available process engineering cost estimation relationships and factors are based on plant costs from …
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Architecture and unit design of a capital cost optimized, household electrodialysis desalination device with continuous flow
… POU scale and, critically, how they can be made cost competitive to RO systems. We do this by proposing and then validating a new, direct-flow continuous ED architecture with differential flow rates (and pressures) between the diluate and concentrate channels. This architecture is made possible …
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Three Essays on Development Economics: Social Capital, Cost of the Sanctions and Group-based Inequality in Iran
… relationships that is called social capital. Emphasizing the importance of the formation of social capital on the democratization of a society, I use female labor force participation as a proxy for social capital. Using survival analysis, I show that oil revenue delays the formation …
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The economics of alternative fuel cycles on sodium-cooled fast reactors and uncertainty and sensitivity analysis of cost estimates
Previous work was done to create a baseline capital cost model for the SFR in which case studies were performed to identify ways to decrease the capital costs while maintaining safety and performance. This thesis expands on the capital cost model to include uncertainty analysis, as well as …
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Implication of national policy on electricity distribution system planning in Kenya
… by finding solutions with minimum total cost. Instead a separate capital cost is calculated for each solution, this ensures that the technical benefit of each solution is not obscured by the associated solution capital cost. The approach also allows for effective planning by starting the …
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Improved methods for managing megaprojects
… world unless it becomes more competitive. The cost of nuclear energy largely depends on capital cost because nuclear power plants are very expensive to design and build and relatively cheap to operate. The capital cost of nuclear power plants is literally dominated by factors other than those …
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Critical assessment of techniques, markets and overall economics of Generation III+ and IV reactors
… both a market and product-based approach for the cost of new nuclear installations. It is the contention of this author that the support of the economic benefits for Generation IV reactors is unwarranted. Based on the uncertainties and lack of detailed design engineering completed, there is not …
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Safety analysis of a compact integral small light water reactor
… However, due to lack of economy of scale, their capital cost needs to be reduced. Increasing the compactness or power density of the nuclear island is one way to reduce capital cost. This work first assesses the transient analysis of a compact integral small light water reactor to examine its …
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Nuclear-renewables energy system for hydrogen and electricity production
… a high price of natural gas ($12-13 MMBtu) and a capital cost reduction (33%) of wind turbines. The hydrogen production is sufficient to supply the current demand of the Great Lakes refineries. With today's electricity prices, a competitive production cost of $1.5 /kg hydrogen is achievable. The …
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Queueing Network Analysis of Semiconductor Manufacturing Plants
… one of maximizing the performance subject to a capital cost constraint. Software has been developed both for performance bounds (called BoundFab) and for design (called DesignFab).
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Using auxiliary gas power for CCS energy needs in retrofitted coal power plants
… gas boiler with back pressure steam turbine. The capital cost of the MEA unit is estimated using the Aspen Icarus Process Evaluator, and the capital cost of the external GT plants are estimated using the Thermoflow Plant Engineering and Cost Estimator. The gas turbine options are found to lead to …
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The Economic and Technical Feasibility of the Application of Partial Nitritation Anammox Technology Over Conventional Nitrification Denitrification for the Treatment of Sidestream Liquor at Cape Flats WWTP
… an effluent quality index (EQI) and operational cost index (OCI). The capital cost of each treatment solution was calculated and used to perform an economic lifecycle cost analysis (LCCA). The study concluded that the sidestream liquor (untreated) would recycle 3 415 kg TKN/d back to the …
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Development of a low-cost, rapid-cycle hot embossing system for microscale parts
… adoption of this method is hindered by high capital costs and low cycle times relative to other technologies, and a general lack of manufacturing equipment. This work details a hot embossing machine design strategy motivated by maximum production speed and quality with minimal capital cost. …
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Cost-optimal design of a household batch electrodialysis desalination device
… batch electrodialysis (ED) system to provide a cost-effective replacement for existing reverse osmosis (RO) devices, for brackish water desalination of Indian groundwater, at lower energy consumption and higher recovery: 80-90% vs 25-40%. Target specifications derived from user-interviews, and …
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Numerical study of downhole heat exchanger concept in geothermal energy extraction from saturated and fractured reservoirs
… still many challenges such as the high initial capital cost of drilling and surface facilities, environmental risk of seismicity due to the induced disequilibrium in the formation, and sustainability of project over designed operational life. Traditional downhole heat exchangers (DHE) could …
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Optimal reliability-based design of bulk water supply infrastructure-incorporating pumping systems
… system is centered on two major objectives: cost efficiency and the formation of a design solution that is appropriate for the conditions in which the system is to be implemented. The currently employed CSIR (2000) design guidelines utilise deterministic measures to size system components. …
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Systems analysis of major consumer energy decisions
… was used to calculate values of recurring and capital cost for all permutations of all the decision components for New York City, Minneapolis and Seattle. These results were analyzed using Pareto plots of recurring versus capital cost. There was a wide range of costs associated with the …
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