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1. Environmentally friendly disposition decisions for end-of-life electrical and electronic products: The case of computer remanufacture

Author:
Farahani, Sajjad; Otieno, Wilkistar; Barah, Masoud
Source:
Journal of cleaner production 2019 v.224 pp. 25-39
ISSN:
0959-6526
Subject:
operating costs,   etc   ; computers; environmental sustainability; supply chain;     Show all 4 Subjects
Abstract:
... Increasing concerns about environmental sustainability strategies, take-back laws and natural resource limitation has highlighted the impact of disposing end-of-life (EOL) electrical and electronic products. To cope with this challenge, manufacturers have integrated reverse logistics into their supply chain or chosen to outsource product recovery activities to third parties. This research studies ...
DOI:
10.1016/j.jclepro.2019.03.182

2. Optimization strategy by a general approach to enhance improving potential of dew-point evaporative coolers

Author:
Sohani, Ali; Sayyaadi, Hoseyn; Zeraatpisheh, Milad
Source:
Energy conversion and management 2019 v.188 pp. 177-213
ISSN:
0196-8904
Subject:
operating costs,   etc   ; air; climatic factors; coolers;     Show all 4 Subjects
Abstract:
... An hourly optimization strategy to enhance dew-point indirect evaporative coolers is presented. First, the performance of the system throughout a year is modeled and then, using the hourly values of input parameters, a multi-objective optimization is done at each hour. Four diverse climatic conditions in the world, in which the system is the best cooling option, are studied while operating cost, t ...
DOI:
10.1016/j.enconman.2019.02.079

3. Bi-objective green scheduling in uniform parallel machine environments

Author:
Safarzadeh, Hamid; Niaki, Seyed Taghi Akhavan
Source:
Journal of cleaner production 2019 v.217 pp. 559-572
ISSN:
0959-6526
Subject:
operating costs,   etc   ; equipment; manufacturing; models; pollutants;     Show all 5 Subjects
Abstract:
... Green and sustainability issues are being considered extensively in industry and in the literature. Most of the green-related effects in the manufacturing sector can be modeled by the costs associated with the production machines due to their resource consumption and/or pollutant emission, as a part of the operation cost. Accordingly, taking into account the machine processing costs alongside the ...
DOI:
10.1016/j.jclepro.2019.01.166

4. Determination of Transfer Capacity Region of Tie Lines in Electricity Markets: Theory and Analysis

Author:
Lin, Wei; Yang, Zhifang; Yu, Juan; Yang, Gaofeng; Wen, Lili
Source:
Applied energy 2019 v.239 pp. 1441-1458
ISSN:
0306-2619
Subject:
operating costs,   etc   ; electricity; energy industry; markets; models;     Show all 5 Subjects
Abstract:
... In power industries, it is a common practice to use an equivalent model of the external power network in an optimization model of the internal power network in order to protect data privacy. However, existing equivalent models cannot accurately consider the operational constraints of an external power network. In this paper, a unified equivalent model is proposed to precisely capture the transfer ...
DOI:
10.1016/j.apenergy.2019.01.146

5. A new model for reliability-centered maintenance prioritisation of distribution feeders

Author:
Afzali, Peyman; Keynia, Farshid; Rashidinejad, Masoud
Source:
Energy 2019 v.171 pp. 701-709
ISSN:
0360-5442
Subject:
operating costs,   etc   ; decision making; energy; models; prioritization;     Show all 5 Subjects
Abstract:
... Maintenance of distribution systems has become more important due to the need to increase energy availability, quality and safety, and also reduce operation cost. Accordingly, the maintenance strategy in distribution systems is one of the most important decision-making activities. One of the most important evaluations for deciding the adequate performance of power distribution system is the identi ...
DOI:
10.1016/j.energy.2019.01.040

6. Energy, cost and uniformity in the design of drip irrigation systems

Author:
Chamba, Diego; Zubelzu, Sergio; Juana, Luis
Source:
Biosystems engineering 2019 v.178 pp. 200-218
ISSN:
1537-5110
Subject:
operating costs,   etc   ; energy; microirrigation; water reservoirs;     Show all 4 Subjects
Abstract:
... A novel approach for the design of drip irrigation systems is presented. The diameters of the laterals and submains were calculated by minimising an objective cost function that includes investment and operating costs of drip irrigation units. Diameters, head loss and its distribution between laterals and submain, average operating pressure head, upstream end energy head and the distribution unifo ...
DOI:
10.1016/j.biosystemseng.2018.11.012

7. Optimal sizing and placement of energy storage systems and on-load tap changer transformers in distribution networks

Author:
Iria, José; Heleno, Miguel; Candoso, Gonçalo
Source:
Applied energy 2019 v.250 pp. 1147-1157
ISSN:
0306-2619
Subject:
operating costs,   etc   ; electric potential difference; energy resources; nonlinear models; planning;     Show all 5 Subjects
Abstract:
... The large-scale deployment of distributed energy resources will produce reverse power flows, voltage, and congestion problems in the distribution networks. This paper proposes a novel optimization model to support distribution system operators planning future medium voltage distribution networks characterized by high penetration of behind-the-meter distributed energy resources. The optimization mo ...
DOI:
10.1016/j.apenergy.2019.04.120

8. Least-cost operation of a battery swapping station with random customer requests

Author:
Mahoor, Mohsen; Hosseini, Zohreh S.; Khodaei, Amin
Source:
Energy 2019 v.172 pp. 913-921
ISSN:
0360-5442
Subject:
operating costs,   etc   ; batteries; electric vehicles; energy; mathematical models;     Show all 5 Subjects
Abstract:
... The Battery Swapping Station (BSS) is emerging as a viable means for fast energy refill of Electric Vehicles (EVs), in addition to many potential benefits in providing energy and ancillary services to the distribution grid. This paper focuses on developing a mathematical model for uncertainty-constrained BSS optimal operation that not only covers the random customer demands of fully charged batter ...
DOI:
10.1016/j.energy.2019.02.018

9. Electromembrane extraction: Overview of the last decade

Author:
Drouin, Nicolas; Kubáň, Pavel; Rudaz, Serge; Pedersen-Bjergaard, Stig; Schappler, Julie
Source:
Trends in analytical chemistry 2019 v.113 pp. 357-363
ISSN:
0165-9936
Subject:
operating costs,   etc   ; electric field; liquid-phase microextraction; mass transfer; solvents;     Show all 5 Subjects
Abstract:
... Sample preparation is a crucial step in any bioanalytical workflow. Nowadays, microextractions are very popular because of the reduction of the organic solvent and sample volumes, the analysis time, and the operating costs. Electromembrane extraction (EME) is one of the most recently reported liquid phase microextraction (LPME) techniques and was first described in 2006. It is based on the applica ...
DOI:
10.1016/j.trac.2018.10.024

10. Stochastic flexible transmission operation for coordinated integration of plug-in electric vehicles and renewable energy sources

Author:
Nikoobakht, Ahmad; Aghaei, Jamshid; Khatami, Roohallah; Mahboubi-Moghaddam, Esmaeel; Parvania, Masood
Source:
Applied energy 2019 v.238 pp. 225-238
ISSN:
0306-2619
Subject:
operating costs,   etc   ; batteries; electric vehicles; models; wind power;     Show all 5 Subjects
Abstract:
... In this paper, the large-scale integration of plug-in electric vehicles (PEVs) with Vehicle-to-Grid (V2G) technology is taken as a promising way to promote the integration of renewable energy sources (RESs). But, it is a challenging task for the independent system operator (ISO) to manage the power flows in its system, especially in the large-scale integration of PEVs and RESs into the transmissio ...
DOI:
10.1016/j.apenergy.2018.12.089

11. Rigorous Design and Optimization of Methyl Glycolate Production Process through Reactive Distillation Combined with a Middle Dividing-Wall Column

Author:
Yang, Shu-Bo; Chien, I-Lung
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.13 pp. 5215-5227
ISSN:
1520-5045
Subject:
operating costs,   etc   ; distillation; esterification; glycolic acid; methanol; process design;     Show all 6 Subjects
Abstract:
... The heterogeneously catalytic esterification of glycolic acid (GA) and methanol (MeOH) is superior to other approaches for the mass production of methyl glycolate (MG) due to several advantages. However, there is no research on the chemical process for the industrial synthesis of MG via esterification so far. Therefore, the rigorous design and optimization of a reactive distillation-based process ...
DOI:
10.1021/acs.iecr.8b05665

12. Ejectors on the cutting edge: The past, the present and the perspective

Author:
Besagni, Giorgio
Source:
Energy 2019 v.170 pp. 998-1003
ISSN:
0360-5442
Subject:
operating costs,   etc   ; computational methodology; fluid mechanics; power generation; prediction; refrigeration;     Show all 6 Subjects
Abstract:
... The applications of ejectors are many and encompass the refrigeration, the power generation and the chemical sectors. On one hand, ejector technology needs limited maintenance, has low operational costs and has no restrictions concerning the working fluids; on the other hand, the complex single- and multi-phase fluid dynamics make ejector design and performance prediction a real challenge. This pe ...
DOI:
10.1016/j.energy.2018.12.214

13. Influence of operating pressure on emitter anti-clogging performance of drip irrigation system with high-sediment water

Author:
Liu, Zeyuan; Xiao, Yang; Li, Yunkai; Zhou, Bo; Feng, Ji; Han, Siqi; Muhammad, Tahir
Source:
Agricultural water management 2019 v.213 pp. 174-184
ISSN:
0378-3774
Subject:
operating costs,   etc   ; brackish water; linear models; microirrigation; risk;     Show all 5 Subjects
Abstract:
... Reducing emitters operating pressure has been widely acknowledged as one of the most effective approach to reduce drip irrigation system maintenance and operation costs. However, utilization of low-quality water, such as high-sediment water, reclaimed water, and brackish water, inevitably increases the emitters clogging risks. To examine the influence of different pressure levels on emitter cloggi ...
DOI:
10.1016/j.agwat.2018.10.017

14. A review of unmanned vehicles for the detection and monitoring of marine fauna

Author:
Verfuss, Ursula K.; Aniceto, Ana Sofia; Harris, Danielle V.; Gillespie, Douglas; Fielding, Sophie; Jiménez, Guillermo; Johnston, Phil; Sinclair, Rachael R.; Sivertsen, Agnar; Solbø, Stian A.; Storvold, Rune; Biuw, Martin; Wyatt, Roy
Source:
Marine pollution bulletin 2019 v.140 pp. 17-29
ISSN:
0025-326X
Subject:
operating costs,   etc   ; animals; fauna; monitoring; surveys; water pollution;     Show all 6 Subjects
Abstract:
... Recent technology developments have turned present-day unmanned systems into realistic alternatives to traditional marine animal survey methods. Benefits include longer survey durations, improved mission safety, mission repeatability, and reduced operational costs. We review the present status of unmanned vehicles suitable for marine animal monitoring conducted in relation to industrial offshore a ...
DOI:
10.1016/j.marpolbul.2019.01.009

15. Development of synergistic extraction process for highly efficient removal of phenols from coal gasification wastewater

Author:
Guo, Chao; Cao, Qi; Chen, Bokun; Yang, Siyu; Qian, Yu
Source:
Journal of cleaner production 2019 v.211 pp. 380-386
ISSN:
0959-6526
Subject:
operating costs,   etc   ; coal; emissions; gasification; income; pentanols; phenols; solvents; wastewater;     Show all 9 Subjects
Abstract:
... Due to the limitation of the existing solvents, the phenols recovery process cannot control phenols concentration to less than 300 mg/L. Therefore, this study presented a synergistic phenols extraction process by using optimal design solvent mixture. The solvent mixture was proposed with the volume ratio of methyl isobutyl ketone (MIBK) to n-pentanol 6:4. The synergistic extraction process was sim ...
DOI:
10.1016/j.jclepro.2018.11.227

16. A closed-loop analysis of grid scale battery systems providing frequency response and reserve services in a variable inertia grid

Author:
Lee, Rachel; Homan, Samuel; Mac Dowell, Niall; Brown, Solomon
Source:
Applied energy 2019 v.236 pp. 961-972
ISSN:
0306-2619
Subject:
operating costs,   etc   ; batteries; equations; solar energy; wind; wind power;     Show all 6 Subjects
Abstract:
... With increasing penetration of wind and solar generation the deployment of fast response plant, principally batteries, is currently considered necessary to mitigate reduced system inertia and the possibility of demand-supply imbalances. In this work the impact of these factors on battery cycling rates, taking into account the input from the batteries themselves, are analysed by applying the swing ...
DOI:
10.1016/j.apenergy.2018.12.044

17. The influence of big data system for used product management on manufacturing–remanufacturing operations

Author:
Xu, Fangchao; Li, Yongjian; Feng, Lipan
Source:
Journal of cleaner production 2019 v.209 pp. 782-794
ISSN:
0959-6526
Subject:
operating costs,   etc   ; manufacturing; markets; models; new products; prices;     Show all 6 Subjects
Abstract:
... In these years, more and more manufacturers implement closed-loop operations and incorporate remanufacturing into its manufacturing system, which forms manufacturing-remanufacturing operations. To increase the efficiency of used product collection, many remanufacturers have established quality valuation system to acquire big data of used products. A quality-dependent acquisition process helps rema ...
DOI:
10.1016/j.jclepro.2018.10.240

18. Selective Extraction of ECG from Tea Polyphenols by One Step in Centrifugal Contactor Separators: Modeling and Application

Author:
Wang, Wanru; Zhang, Panliang; Ou, Jian; Liu, Fusong; Tang, Kewen; Xu, Weifeng
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.5 pp. 2027-2035
ISSN:
1520-5045
Subject:
operating costs,   etc   ; models; polyphenols; process design; separators; tea;     Show all 6 Subjects
Abstract:
... One-step fractional extraction was developed to selectively extract (−)-epicatechin-3-gallate (ECG) from tea polyphenols (TP) by using centrifugal contactor separators (CCSs). An efficient extraction system was constructed without reactive extractant. A model for fractional extraction was set up to study the effect of feed position, the number of stages (NTU), and phase ratio on extraction perform ...
DOI:
10.1021/acs.iecr.8b06042

19. Advanced exergy analysis of heat exchanger network in a complex natural gas refinery

Author:
Fard, Mohsen Mehdizadeh-; Pourfayaz, Fathollah
Source:
Journal of cleaner production 2019 v.206 pp. 670-687
ISSN:
0959-6526
Subject:
operating costs,   etc   ; equations; exergy; heat exchangers; natural gas;     Show all 5 Subjects
Abstract:
... In this paper, the advanced exergy analysis was used to determine the avoidable and unavoidable exergy destructions of the heat exchanger networks (HENs) in a complex natural gas refinery in the South Pars gas field, focusing only on the improvement of the avoidable part. Exergy balances were evaluated for the HENs and the equations of advanced exergy destruction and exergetic efficiency for the H ...
DOI:
10.1016/j.jclepro.2018.09.166

20. A holistic optimization framework for forest machine trail network design accounting for multiple objectives and machines

Author:
Hosseini, Ahmad; Lindroos, Ola; Wadbro, Eddie
Source:
Canadian journal of forest research 2019 v.49 no.2 pp. 111-120
ISSN:
1208-6037
Subject:
operating costs,   etc   ; environmental impact; forestry; forestry equipment; landscapes; mechanization; trees;     Show all 7 Subjects
Abstract:
... Ground-based mechanized forestry requires the traversal of terrain by heavy machines. The routes that they take are often called “machine trails” and are created by removing trees from the trail and placing the logs outside it. Designing an optimal machine trail network is a complex locational problem that requires understanding how forestry machines can operate on the terrain, as well as the trad ...
DOI:
10.1139/cjfr-2018-0258