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Processes, Volume 6, Issue 11

2018 November - 27 articles

Cover Story: Fleet-level monitoring and fault diagnostics tools are essential to increase the availability, and reduce the operation and maintenance cost, of small-scale power generators. Typically, technological solutions for engine health monitoring are developed for large-scale gas turbines and mainly focused on single systems. Research focused on smaller systems and fleet-level monitoring is very limited. Realizing its’ potential, the exploitation of a physics-based model for micro gas turbine fleet monitoring and fault diagnostics is investigated in this paper. A multi-layer diagnostics approach is investigated with the help of computational simulation studies. View Paper here.
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Articles (27)

  • Article
  • Open Access
9 Citations
4,963 Views
13 Pages

Numerical Simulation of Water Absorption and Swelling in Dehulled Barley Grains during Canned Porridge Cooking

  • Lei Wang,
  • Mengting Wang,
  • Mingming Guo,
  • Xingqian Ye,
  • Tian Ding and
  • Donghong Liu

20 November 2018

Understanding the hydration behavior of cereals during cooking is industrially important in order to optimize processing conditions. In this study, barley porridge was cooked in a sealed tin can at 100, 115, and 121 °C, respectively, and changes...

  • Article
  • Open Access
18 Citations
5,957 Views
15 Pages

20 November 2018

In this work, a methodology for fault detection in wastewater treatment systems, based on parameter estimation, using multiparametric programming is presented. The main idea is to detect faults by estimating model parameters, and monitoring the chang...

  • Perspective
  • Open Access
17 Citations
5,589 Views
15 Pages

19 November 2018

Biofilms are a ubiquitous form of life for microorganisms. Photosynthetic biofilms such as microphytobenthos (MPB) and biological soil crusts (BSC) play a relevant ecological role in aquatic and terrestrial ecosystems, respectively. On the other hand...

  • Article
  • Open Access
29 Citations
7,515 Views
22 Pages

19 November 2018

The optimization of the production process of metal mines has been traditionally driven only by economic benefits while ignoring resource efficiency. However, it has become increasingly aware of the importance of resource efficiency since mineral res...

  • Article
  • Open Access
32 Citations
6,267 Views
11 Pages

Alternative Approach to Current EU BAT Recommendation for Coal-Fired Power Plant Flue Gas Desulfurization Wastewater Treatment

  • Jan Bogacki,
  • Piotr Marcinowski,
  • Maciej Majewski,
  • Jarosław Zawadzki and
  • Sridhar Sivakumar

19 November 2018

Fossil fuel combustion is a serious environmental problem. Significant quantities of flue gasses and wastewater, requiring further treatment, are produced. This article compares three wet flue gas desulfurization (FGD) wastewater treatment methods: c...

  • Feature Paper
  • Article
  • Open Access
40 Citations
9,227 Views
21 Pages

Development of a Dynamic Model and Control System for Load-Following Studies of Supercritical Pulverized Coal Power Plants

  • Parikshit Sarda,
  • Elijah Hedrick,
  • Katherine Reynolds,
  • Debangsu Bhattacharyya,
  • Stephen E. Zitney and
  • Benjamin Omell

17 November 2018

Traditional energy production plants are increasingly forced to cycle their load and operate under low-load conditions in response to growth in intermittent renewable generation. A plant-wide dynamic model of a supercritical pulverized coal (SCPC) po...

  • Article
  • Open Access
20 Citations
7,612 Views
23 Pages

16 November 2018

Oxygen consumption is one of the factors that contributes to the high treatment cost of a supercritical water oxidation (SCWO) system. In this work, we proposed an oxygen recovery (OR) process for an SCWO system based on the solubility difference bet...

  • Article
  • Open Access
31 Citations
6,735 Views
16 Pages

16 November 2018

In this paper we propose a methodology to study circular economy processes based on mathematical modelling. In open-ended systems, waste could be converted back to recycling, transforming the economy from linear to circular. The concept of entropy an...

  • Article
  • Open Access
24 Citations
5,958 Views
17 Pages

Calculation Model and Rapid Estimation Method for Coal Seam Gas Content

  • Fakai Wang,
  • Xusheng Zhao,
  • Yunpei Liang,
  • Xuelong Li and
  • Yulong Chen

14 November 2018

Coalbed gas content is the most important parameter for forecasting and preventing the occurrence of coal and gas outburst. However, existing methods have difficulty obtaining the coalbed gas content accurately. In this study, a numerical calculation...

  • Article
  • Open Access
12 Citations
5,559 Views
19 Pages

Waste Fuel Combustion: Dynamic Modeling and Control

  • Nathan Zimmerman,
  • Konstantinos Kyprianidis and
  • Carl-Fredrik Lindberg

13 November 2018

The focus of this study is to present the adherent transients that accompany the combustion of waste derived fuels. This is accomplished, in large, by developing a dynamic model of the process, which can then be used for control purposes. Traditional...

  • Feature Paper
  • Article
  • Open Access
26 Citations
6,434 Views
20 Pages

Membrane-Based Processes: Optimization of Hydrogen Separation by Minimization of Power, Membrane Area, and Cost

  • Patricia L. Mores,
  • Ana M. Arias,
  • Nicolás J. Scenna,
  • José A. Caballero,
  • Sergio F. Mussati and
  • Miguel C. Mussati

12 November 2018

This work deals with the optimization of two-stage membrane systems for H2 separation from off-gases in hydrocarbons processing plants to simultaneously attain high values of both H2 recovery and H2 product purity. First, for a given H2 recovery leve...

  • Feature Paper
  • Article
  • Open Access
15 Citations
4,343 Views
13 Pages

7 November 2018

Microwave heating of solid stack materials is common but bothered by problems of uneven heating and electric discharge phenomena. In this paper, a method introducing fluid materials with different relative permittivity is proposed to improve the heat...

  • Article
  • Open Access
21 Citations
4,974 Views
15 Pages

The Effect of Collision Angle on the Collision and Adhesion Behavior of Coal Particles and Bubbles

  • Qiming Zhuo,
  • Wenli Liu,
  • Hongxiang Xu,
  • Xiaopeng Sun,
  • He Zhang and
  • Wei Liu

5 November 2018

The collision and adhesion behavior of particles and bubbles is the key to flotation. Many scholars have investigated the collision and adhesion law of regularly shaped and homogeneous particles (glass beads, glass fiber), but the particles in flotat...

  • Article
  • Open Access
16 Citations
16,888 Views
14 Pages

5 November 2018

The aim of this research was to simulate a high-pressure (HP) separator in order to investigate the effect of changing separator operating conditions on product properties. In this study, the results obtained using the CHEMCAD simulation software pac...

  • Feature Paper
  • Article
  • Open Access
1 Citations
4,087 Views
18 Pages

4 November 2018

Cell signaling and gene transcription occur at faster time scales compared to cellular death, division, and evolution. Bridging these multiscale events in a model is computationally challenging. We introduce a framework for the systematic development...

  • Article
  • Open Access
28 Citations
4,871 Views
13 Pages

Experimental Study on Feasibility of Enhanced Gas Recovery through CO2 Flooding in Tight Sandstone Gas Reservoirs

  • Fengjiao Wang,
  • Yikun Liu,
  • Chaoyang Hu,
  • Yongping Wang,
  • Anqi Shen and
  • Shuang Liang

2 November 2018

The development of natural gas in tight sandstone gas reservoirs via CH4-CO2 replacement is promising for its advantages in enhanced gas recovery (EGR) and CO2 geologic sequestration. However, the degree of recovery and the influencing factors of CO2...

  • Article
  • Open Access
2 Citations
3,887 Views
18 Pages

2 November 2018

To eliminate the numerical oscillations appearing in the first-order symmetric smoothed particle hydrodynamics (FO-SSPH) method for simulating transient heat conduction problems with discontinuous initial distribution, this paper presents a second-or...

  • Feature Paper
  • Article
  • Open Access
27 Citations
6,510 Views
20 Pages

Diagnostics-Oriented Modelling of Micro Gas Turbines for Fleet Monitoring and Maintenance Optimization

  • Moksadur Rahman,
  • Valentina Zaccaria,
  • Xin Zhao and
  • Konstantinos Kyprianidis

2 November 2018

The market for the small-scale micro gas turbine is expected to grow rapidly in the coming years. Especially, utilization of commercial off-the-shelf components is rapidly reducing the cost of ownership and maintenance, which is paving the way for va...

  • Article
  • Open Access
7 Citations
4,141 Views
16 Pages

High Mixing Efficiency by Modulating Inlet Frequency of Viscoelastic Fluid in Simplified Pore Structure

  • Meng Zhang,
  • Yunfeng Cui,
  • Weihua Cai,
  • Zhengwei Wu,
  • Yongyao Li,
  • Fengchen Li and
  • Wu Zhang

1 November 2018

Fluid mixing plays an essential role in microscale flow systems. Here, we propose an active mixing approach which enhances the mixing of viscoelastic fluid flow in a simplified pore T-junction structure. Mixing is actively controlled by modulating th...

  • Article
  • Open Access
40 Citations
4,463 Views
17 Pages

1 November 2018

Similar-material, composed of different raw materials with different properties, is similar to the physical and mechanical properties of geotechnical media, in which raw material proportioning is an important means to control the performance of simil...

  • Article
  • Open Access
36 Citations
5,063 Views
12 Pages

1 November 2018

(1) Background: The environmentally friendly choline-amino acid ionic liquids (ChAAILs) and deep eutectic solvents (DESs) have been used as excellent alternatives to volatile organic compounds (VOCs) and ionic liquids (ILs) in recent years; (2) Metho...

  • Article
  • Open Access
37 Citations
7,169 Views
19 Pages

The Impact of Oriented Perforations on Fracture Propagation and Complexity in Hydraulic Fracturing

  • Liyuan Liu,
  • Lianchong Li,
  • Derek Elsworth,
  • Sheng Zhi and
  • Yongjun Yu

1 November 2018

To better understand the interaction between hydraulic fracture and oriented perforation, a fully coupled finite element method (FEM)-based hydraulic-geomechanical fracture model accommodating gas sorption and damage has been developed. Damage confor...

  • Feature Paper
  • Article
  • Open Access
10 Citations
6,085 Views
23 Pages

Optimal Design of a Two-Stage Membrane System for Hydrogen Separation in Refining Processes

  • Ana M. Arias,
  • Patricia L. Mores,
  • Nicolás J. Scenna,
  • José A. Caballero,
  • Sergio F. Mussati and
  • Miguel C. Mussati

31 October 2018

This paper fits into the process system engineering field by addressing the optimization of a two-stage membrane system for H2 separation in refinery processes. To this end, a nonlinear mathematical programming (NLP) model is developed to simultaneou...

  • Article
  • Open Access
3 Citations
4,003 Views
24 Pages

31 October 2018

A local fixed pivot quadrature method of moments (LFPQMOM) is proposed for the solution of the population balance equation (PBE) for the aggregation and breakage process. First, the sectional representation for aggregation and breakage is presented....

  • Article
  • Open Access
95 Citations
13,861 Views
12 Pages

Optimization of Microwave-Assisted Extraction of Essential Oil from Vietnamese Basil (Ocimum basilicum L.) Using Response Surface Methodology

  • Thien Hien Tran,
  • Huynh Huu Hao Nguyen,
  • Duy Chinh Nguyen,
  • Thanh Quang Nguyen,
  • Huynh Tan,
  • Le Thi Hong Nhan,
  • Dai Hai Nguyen,
  • Lam Dai Tran,
  • Sy Trung Do and
  • Trinh Duy Nguyen

25 October 2018

Basil plant is a common source for linalool and estragole. However, it has been showed that the chemical composition of basil varies considerably depending on many factors including method of extraction, cultivar of the plant or geographical location...

  • Feature Paper
  • Article
  • Open Access
5 Citations
4,853 Views
17 Pages

Eden Model Simulation of Re-Epithelialization and Angiogenesis of an Epidermal Wound

  • Ephraim Agyingi,
  • Luke Wakabayashi,
  • Tamas Wiandt and
  • Sophia Maggelakis

25 October 2018

Among the vital processes of cutaneous wound healing are epithelialization and angiogenesis. The former leads to the successful closure of the wound while the latter ensures that nutrients are delivered to the wound region during and after healing is...

  • Feature Paper
  • Article
  • Open Access
34 Citations
10,329 Views
12 Pages

Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters

  • Francisco M. Baena-Moreno,
  • Mónica Rodríguez-Galán,
  • Fernando Vega,
  • T. R. Reina,
  • Luis F. Vilches and
  • Benito Navarrete

24 October 2018

This article presents a regeneration method of a sodium hydroxide (NaOH) solution from a biogas upgrading unit through calcium carbonate (CaCO3) precipitation as a valuable by-product, as an alternative to the elevated energy consumption employed via...

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Processes - ISSN 2227-9717