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 20 for “"electricity cost"”.
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Flow Shop Scheduling for Energy Efficient Manufacturing
… demand-side management might cut the cost of maintaining this balance via offering consumers incentives to manage their consumption in response to the price signals.</p> <p>Time-varying electricity rate is a demand-side management scheme. Under the time-varying electricity rate, the …
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Flow Shop Scheduling for Energy Efficient Manufacturing
… demand-side management might cut the cost of maintaining this balance via offering consumers incentives to manage their consumption in response to the price signals.</p> <p>Time-varying electricity rate is a demand-side management scheme. Under the time-varying electricity rate, the …
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Algorithmic And Mathematical Programming Approaches To Scheduling Problems With Energy-Based Objectives
… concerns related to energy consumption and electricity cost in manufacturing enterprises. Two classes of problems are considered in this dissertation: (i) minimizing the makespan in a permutation flow shop with peak power consumption constraints (the PFSPP problem for short) and (ii) …
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Energy audit methodology for belt conveyors
The electricity cost is one of the largest components of operating costs on a belt conveyor system. This dissertation introduces a unique Conveyor Electricity Cost Efficiency Audit Methodology (CECEAM). In the CECEAM the conveyor system is evaluated from a high to detail level in order to identify …
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Enhanced Pump Schedule Optimization For Large Water Distribution Networks To Maximize Environmental And Economic Benefits
… develop optimization method and tools to reduce electricity consumption of pump stations of water distribution systems. Based on this ongoing research trend, about a decade ago, some commercial pump operation optimization software introduced to the market. Using metaheuristic and evolutionary …
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The siting of wind turbines
… 1984, Guy Roberts completed a report on the cost of wind energy in South Africa. His results showed that wind-energy in South Africa was uneconomical, but they suggest that at locations with higher wind speeds, the cost of wind power would approach the South African grid electricity cost. …
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Energy optimisation on wastewater treatment plants focusing on different aeration technology
… producer, Eskom, on the verge of collapse, electricity cost in South Africa are set to increase drastically. It is therefore important that electrical consumption be reduced throughout all sectors and wastewater treatment is no exception. With reduction of electrical consumption of WWTPs in …
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Behavioral responses and policy evaluation: Revisiting water and fuel policies
… pollution, and fuel consumption. I assess their cost-effectiveness by modeling and quantifying the behavioral responses of farmers and households.</p> <p>My first essay focuses on decreasing groundwater depletion through increasing irrigation efficiency in Mexico. I quantify the impacts of …
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Exergoeconomic analysis and optimization of organic Rankine cycles
… to produce renewable environmentally low impact electricity. Using these resources efficiently within economic constraints is important for viability of these systems. This thesis explores a regenerative organic Rankine cycle for use in low temperature heat sources. A Bitzer model scroll expander …
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Evaluation of a solid-liquid manure separation operation
… filtration, and barn construction and operating costs. A full-scale barn in Missouri was closely monitored to perform these objectives. Laboratory scale pretreatments and filtrations were conducted to evaluate the practicality of nutrient/water recycling from the separated liquid manure. The …
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The Effect of Supply Chain Configuration on Small Modular Reactor Economics
… small modular reactors (SMRs) to bring down the cost of nuclear power. The economies of scale that have traditionally driven nuclear vendors to design larger reactors can be overcome for small reactors by the combination of standardisation of design, modularisation of the build process, and …
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Design and economic analysis of solar home system for urban areas of Mogadishu using homer software
… some places. The most used energy (generation of electricity) is hydropower because heat and fuel are still on some scale. This problem comes about in less efficiency and financial decay of some nations such as Somalia which is among the country at very high speed in progress, the grid lines from …
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Three Essays Examining Household Energy Demand and Behavior
… Star appliance adoption would result in house electricity cost savings of \$164 million per year and associated carbon emission reductions of about 1.1 million metric tons per year. The second essay evaluates household energy security and the effectiveness of the Low-Income Home Energy …
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Optimization of Small Grid-tied and Off-grid PV Systems with Energy Management
<p>Global environmental concerns, rising grid electricity cost and the increasing need for energy have opened new opportunities for the integration of photovoltaics (PV) into the grid. As a result there is need to better understand how to optimize grid tied PV systems in no-net metering situations …
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Optimal load management of a microgrid with an electric boiler and renewable generation
… cannot meet the energy demand, it will purchase electricity from the external power grid; if there is surplus renewable energy, the redundant renewable generation can be sold or converted to heat to be stored in the TES. Power flows between the grid, renewable sources, boiler, and the remaining …
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Application of Phase Change Materials for Peak Load Shifting Through Price-Based Control Method
… which would be able to use online real-time electricity price data to use electricity when it is cheap and to stop using it during high peak periods. The proposed method was first tested on a domestic freezer equipped with storage trays containing a eutectic solution of ammonium chloride. An …
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Analisis penerapan biaya relevan dalam pengambilan keputusan menerima atau menolak pesanan khusus untuk peningkatan laba perusahaan pada UD. Kang Kabayan
… a special order is information of relevant cost analysis. This research aims to know the relevant cost calculation carried out by the company in the acceptance or rejection special orders as well as to analyze application of the relevant cost at UD. Kang Kabayan. The type of research used …
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Study on heat transfer to supercritical water in application to SMRs
… analysis of its Levelized Unit of Energy Cost (LUEC). Heat transfer data was examined for the onset of deteriorated heat transfer using three correlations that relied on NIST REFPROP v.10 for thermophysical property values. The experimental inside-wall temperature and heat transfer …
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The economic impact of electricity price increases on the potato industry in South Africa
… Regulator of South Africa (NERSA) announced that electricity tariffs would increase at an average rate of 25 percent per year over a three year period (Njobeni, 2010). This raised fears within the economy and specifically within the agricultural sector that these increases would negatively impact …
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The potential role of Vertical Plant Farms in contributing to the environmental sustainability and security of the global food system
… most viable crops for VPF cultivation. Capital costs, energy density and the resulting carbon intensity and production costs are significant barriers to producing crops such as cereals, legumes, roots and seed oils in a VPF setting. Many of these important crops, both in terms of contribution to …