Structural Dynamic Models

Banerjee, Arnab; Rakshit, Nabyendu; Ray, S. Saha

doi:10.1016/b978-0-12-409548-9.11202-3

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…In simple terms, it is a measure of the quality of an energy or how useful an energy can be. Energy cannot be destroyed but exergy can be destroyed or consumed in real applications due to irreversibilities that occur (Banerjee et al, 2019). They report that, according to conventional exergy analysis, the cartridge filters had the highest efficiency (about 98%), followed by the feed pump (about 62%), and then the high-pressure pump (about 59%).…”

Section: Energy Requirementmentioning

confidence: 99%

A review of spiral wound membrane modules and processes for groundwater treatment

Tabi,

Boakye,

Agyemang

et al. 2024

Front. Membr. Sci. Technol.

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The demand for freshwater keeps increasing on a global scale, and on the other hand, the availability of freshwater keeps diminishing. Groundwater has been identified as the largest source of freshwater that is readily accessible. Although the water is available for abstraction, it must be treated to meet application standards. Membrane processes are the options that industry and researchers are turning to for the purification of groundwater. This review provides an insight into the use of pressure-driven membrane processes for groundwater treatment, with focus on the spiral wound membrane module. A brief description of what a spiral wound module is and the plant set-up in which it is used is given. The various applications of the spiral wound module with regards to groundwater treatment have been reviewed. The shortcomings and challenges limiting the application of spiral wound modules and by extension, the treatment plant itself have been highlighted. To cap it all, the opportunities that can be exploited to overcome these challenges and position pressure-driven membrane processes for groundwater treatment as the go-to purification method have been discussed.

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Section: Energy Requirementmentioning

confidence: 99%

A review of spiral wound membrane modules and processes for groundwater treatment

Tabi,

Boakye,

Agyemang

et al. 2024

Front. Membr. Sci. Technol.

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“…F 0 is the output flow from the system to the environment (product of the system). F n and P n [1,6,11,12] are the fuel (input flows) and the product (output flows) of each piece of equipment n, respectively. Hence, Relating the parameters with those previously discussed in the ascendency section, p(F j ) represents the exergy load of F j in relation to the total fuel, and p(F j |P i ) is the fraction of the product of i that becomes part of the fuel of j.…”

Section: Ascendency Applied To An Industrial Systemmentioning

confidence: 99%

“…The evolutionary state of an ecosystem can be quantified using its emergent 1 properties, which cannot be determined when studying the compartments separately, but only when they are interconnected. These properties are quantified using goal functions, such as ascendency, which can be applied to analyze ecosystems [11]. Ascendency is an index, a complex measure of the information and flows embodied in an ecological network.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of the ascendency theory to industrial systems

Carvalho

Serra

2019

J Braz. Soc. Mech. Sci. Eng.

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Growth and development of ecosystems are subject to restrictions. Besides exergy, other properties, such as ascendency, have been described as goal functions that can inform about the health of ecosystems and synthesize information about the energy and matter flows in relation to an ideal theoretical state. Ascendency is an index that quantifies both the growth and the degree of organization in an ecosystem, in which several subsystems interact with mass and energy flows. Ascendency is quantified in terms of mass and energy exchanges among different subsystems constituting an ecosystem. Its value increases when the activity of the ecosystem increases (amount of mass and energy exchanges increase) and when the ecosystem evolves to a higher complexity of its structure (level of integration of the subsystems). Exergy provides information about the quality of energy and is therefore very appropriate for evaluating the thermodynamic efficiency of energy conversion processes. Growing concerns about energy efficiency have stimulated the development of techniques for the analysis, design, and diagnosis of complex energy systems based on the second law of thermodynamics. In this context, the set of methodologies called thermoeconomics was created, aimed at cost allocation (economic, thermodynamic, or environmental) and optimization of thermal systems based on thermodynamic concepts of system operation, which very often use exergy. Thermoeconomic analysis provides information on the interaction among the different components of energy systems and how energy resources are distributed throughout the internal mass and energy flows of the system. Herein the formulation of ascendency was adapted to industrial systems using exergy flows as the quantity of interest, employing the productive structure obtained from thermoeconomic analysis techniques to describe the production process of the system. Ascendency was then applied to a set of simple thermodynamic power systems based on the Rankine cycle to study the connection between energy (thermodynamic) efficiency and the "growth" and "development" of the power system. Four configurations with different interconnection levels between the equipment were studied, maintaining the final product of the power systems (net power) and the energy efficiency of the entire cycle constant, for comparison purposes. Moreover, different turbine efficiencies were also analyzed, maintaining a fixed system structure and constant net power produced, to obtain comparable results. It was verified that in the case of steam power plants based on the Rankine cycle, an increase in system complexity, maintaining the total plant production constant, increases ascendency as well as its potential for energy efficiency improvement. When different cases with the same interconnection level between equipment (same system structure), same net power production and different efficiencies are compared, the configuration with the highest ascendency value also presents a better potential for optimization.

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Eco-bioengineering tools in ecohydrological assessment of eutrophic water bodies

et al. 2022

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Eutrophication of water bodies and deterioration of water quality is an emerging environmental crisis. The root causes, pathways and consequences of eutrophication are multidirectional and provide a huge scope of riskanalysis and risk-assessment in the domain of remediation studies. However, a deep insight on restoration studies shows a global transitional trend of evolution of traditional restoration methods to advanced innovative techniques with pioneering development in the eld of science and technology. This study introduces a novel approach of considering ecohydrological assessment of eutrophication emphasizing classical biomanipulation practices and their evolution into innovative methods coined as 'eco-bioengineering' method. The main objective of this study is to critically analyse and recognize the research gaps in classical biomanipulations and appreciate the reproducibility and e cacy of eco-bioengineering methods at micro-and macrolevel aquatic ecosystems. Comprehensive literature review was conducted in o ine and online planforms, and our survey revealed continuation of a historical trend in classical biomanipulation practices (75.36%) and an ascending drift in eco-bioengineering research (24.64%) in the immediate decade (2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019)(2020). At a global scale, recent biomanipulation research is skewedly distributed in Europe (43.48%), East Asia (34.78%), North America (8.70%), South America (2.90%), South Africa (4.35%), Oceania (1.45%), Middle East (1.45%) and non-speci c regions (2.90%). Finally, this study revealed the comprehensiveness of eco-bioengineering methods and their strong ecological resilience to recurrence of eutrophication and uctuating environmental ows in the future. Therefore, this study reinforces eco-bioengineering methods a cost-effective green technologies that will sustainable solutions for restoration of eutrophic waters at a global scale.

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Structural Dynamic Models

Cited by 4 publications

References 19 publications

A review of spiral wound membrane modules and processes for groundwater treatment

A review of spiral wound membrane modules and processes for groundwater treatment

Adaptation of the ascendency theory to industrial systems

Eco-bioengineering tools in ecohydrological assessment of eutrophic water bodies

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