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Showing 1 to 20 of 34 for “"specific energy consumption"”.
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Thermal homogeneity and energy efficiency in single screw extrusion of polymers. The use of in-process metrology to quantify the effects of process conditions, polymer rheology, screw geometry and extruder scale on melt temperature and specific energy consumption
Polymer extrusion is an energy intensive process whereby the simultaneous action of viscous shear and thermal conduction are used to convert solid polymer to a melt which can be formed into a shape. To optimise efficiency, a homogeneous melt is required with minimum consumption of process energy. …
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Energy Intensity Determination in Wood Processing Sawmills
Energy intensity is an important aspect to wood products producing sawmills in the State of West Virginia. This research aims to facilitate the accurate measurement of electrical energy intensity in sawmills by means of energy analysis and diagnostics using various data acquisition devices on …
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PV-powered membrane system control for continuous autonomous water solution in remote areas
… volume and quality, as well as increased specific energy consumption. The primary aim of this research is to incorporate mechanical energy storage and develop a hydraulic buffering control method to enhance system performance under varying SI conditions. To achieve this, a hydraulic energy …
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Monovalent selective electrodialysis : optimizing energetics for desalination and mineral recovery
… The model was then used to predict selectivity, specific energy consumption, and second law efficiencies for different system conditions. An optimization study was also carried out to determine the optimal operating parameters for the MSED system. The optimized system led to a decrease in …
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Effect of operating variables on IsaMill™ performance using platinum bearing ores
… design and operating variables on the IsaMillTM specific energy and product size, when grinding UG2 platinum-bearing ore. The main objectives of this work were to study the effects of operating variables on specific energy consumption and product fineness, and to investigate IsaMillTM scale-up …
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A combined modeling and experimental study assessing the impact of fluid pulsation and operating schemes on charge and energy efficiency in capacitive deionization
… and brine-water concentrations. The charge and energy efficiency performance between the two flow-modes is compared using a porous electrode model that is calibrated and validated with experimental data. To quantify specific contributions to charge efficiency losses, the model captures local …
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Bend-Forming: A Deformation Process for In-Space Manufacturing of Truss Structures
… are a promising ISM approach due to their low specific energy consumption, almost an order of magnitude lower than melt-based and extrusion processes which rely on heating of the feedstock. This low specific energy consumption potentially enables deformation processes to fabricate 100-meter …
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G-Code Based Toolpath Simulation for Predicting CNC Energy Consumption
Machining is an energy intensive process, and being able to model the energy consumption of machining would allow manufacturers to consider how to reduce their energy footprint. While many models have been developed for estimating energy consumption, they are not easily applicable or accessible to …
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An environmental analysis of injection molding
… There are three main objectives: analyze the energy consumption trends in injection molding machinery, explore the environmental performance of different technological alternatives, and provide a transparent life cycle inventory (LCI) identifying the mayor players in terms of environmental …
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Preliminary framework for quantitative sustainable design of redox-mediated electrodialysis for biorefinery separations
… with advances in flux of succinic acid (SA) and specific energy consumption. In coupling an empirical model with a quantitative sustainable design framework, this work aims to give a sense for the feasibility of redox-ED implementation at an industrially relevant scale to prioritize future …
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Investigation of operating conditions in stirred ball milling of coal
… monosized feeds are compared on the basis of specific energy consumption. It has been found that a 20:1 ball size/particle size ratio gives optimum grinding conditions. With the fine particle sizes obtained using stirred ball milling, as well as other fine grinding techniques, a growing …
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Design and Operation of Multi Effect Distillation- Reverse Osmosis based Hybrid Desalination Process. Modelling, Simulation and Optimisation of Design and Operation Parameters of Multi Effect Distillation and Reverse Osmosis Hybrid Desalination Processes for Producing Multi-grade Waters at Minimum Energy and Minimum Cost of Production
… first time to enhance the MED process, which are specifically include the improvement of key performance indicators including water production cost via a repetitive simulation based model. In line of this, the investigation of the lowest water production cost for different numbers of effects of …
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Predictive Time-Variant Photovoltaic Electrodialysis Reversal: A Novel Design Optimization using Predictive Machine Learning and Control Theory
… the relationship between water production and Specific Energy Consumption (SEC) for time-variant PV-EDR systems and to introduce a control system that optimizes the energy management strategy with a goal of maximizing water production as well as operates efficiently with respect to energy …
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Development of a computational tool and dynamometer for optimizing variable-speed centrifugal pump selection for a containerized, direct-drive photovoltaic electrodialysis desalination system
… plant (CDP), which enables its minimal energy storage, also means that the centrifugal pumps used are operated at variable speeds to respond to the solar irradiance. Unfortunately, centrifugal pumps are typically designed for fixed operating conditions, and manufacturers often only …
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Desalination of brackish groundwater in the United States : minimum energy requirements
… no national assessment has been conducted on the energy costs required to make brackish groundwater potable. Because the ionic composition of groundwater varies significantly from location to location, unlike seawater, conducting site-specific analyses of the resource across the U.S. is necessary. …
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Membrane distillation for high salinity desalination
Membrane distillation systems typically have low energy efficiency. Multistage membrane distillation (MD) systems can have significantly higher efficiencies than their single stage counterparts. However, multistage MD system design has received limited attention. In this work, the performance of a …
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Manipulation of Heat Dissipation from Sides of Electrolytic Cells
… to be in agreement with actual results. The specific energy consumption of the cell increased by 132 kWhr due to the power required to operate the air supply (blower) to the network. Nevertheless, the selective air forced cooling can be considered as an option to enable electrolytic cells to …
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Effect of VRM on a polymetallic sulfide ore and the flotation response as compared to conventional wet and dry rod milling
Comminution is an energy intensive, size reduction and mineral dressing process which consumes up to 50% of concentrator energy consumption. Conventional methods use mainly a combination of crushers and tumbling mills in comminution circuits. Energy consumption in these circuits has been found to …
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Removing the Quantum Barrier to Sustainable LH2 Fuel in Aviation: A Mechanistic, Process, and Environmental Life Cycle Assessment of the Ortho-Para Conversion in Liquefaction
Liquid hydrogen (LH2) is a critical energy carrier for decarbonisation, yet its production is challenged by the high energy cost and boil-off losses associated with the exothermic ortho-to-para hydrogen conversion (OPC). A fundamental trade-off exists between the energy invested during liquefaction …
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BIO-ELECTRORECYCLING OF CARBON DIOXIDE INTO VALUABLE PRODUCTS
… electrode was compared to the CC one in terms of energy demand, and it proved to be a better alternative than carbon-based electrodes in terms of Coulombic efficiency (57%), specific energy consumption (21.5 kWh kg-1HA), and HA surface production rate (13 g HA m-2 d -1 ). It was also demonstrated …
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