Presentation - Building the Green Hydrogen Economy.pptx
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This presentation discusses the potential for green hydrogen to support a renewable energy economy. It notes that hydrogen energy is already being used in three surprising applications: fuel cells to power buses and trucks, hydrogen to heat homes in Japan, and blending hydrogen into natural gas pipelines in the US and Europe. The presentation also compares the costs of hydrogen storage versus lithium-ion batteries for shifting excess renewable energy production across different time durations. It finds that hydrogen has a clear advantage for inter-day and longer duration shifting as battery efficiency decreases significantly beyond one day of storage.
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Project management involves three key phases: planning, scheduling, and controlling. Planning involves setting objectives, identifying activities, and estimating resources and costs. Scheduling determines the start and finish times of activities using techniques like CPM and PERT to identify the critical path. Controlling monitors progress against the plan and allows for revisions if needed. Effective project management requires thorough planning, scheduling of activities and resources, and ongoing controlling to ensure projects are completed on time and on budget.
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The document discusses several methods for producing hydrogen through water splitting, including:
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- Photochemical and photobiological systems use sunlight to drive the water splitting reaction.
- Thermal water splitting uses very high temperatures of around 1000°C.
- Gasification and biomass conversion also produce hydrogen from other feedstocks.
Low current electrolysis is discussed as a more efficient method, similar to the water splitting that occurs in photosynthesis. Producing hydrogen directly from water without electrolysis is also mentioned. Overall
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The document outlines the manufacturing process of a refrigerator. It discusses the raw materials used, pre-assembly steps like door assembly and fitting, post-assembly steps like fitting the compressor, condenser, and evaporator, testing procedures like cooling and leakage tests, and finishing operations like packaging and storage of the finished products. The presentation was given by three students to discuss what they learned about refrigerator manufacturing during a factory visit.
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The document discusses the production process of biodegradable polyethylene bags. It involves mixing raw materials like LLDPE, LDPE, HDPE and d2w additive. The mixture is extruded and printed with designs. Then the film goes through a bag making process involving cutting and sealing to form final bags. The bags contain recycled compound and are made biodegradable by the addition of d2w additive during production. The production process aims to reduce and reuse materials while effectively recycling plastic waste.
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Advanced control scheme of doubly fed induction generator for wind turbine us...
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
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Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
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#Prerequisites:
- Basic understanding of AWS services and architecture
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Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
An improved modulation technique suitable for a three level flying capacitor ...
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