A simultaneous methodology for the optimal design of integrated water and energy networks considering pressure drops in process industries

2016 ◽  
Vol 103 ◽  
pp. 442-454 ◽  
Author(s):  
Fardin Torkfar ◽  
Akram Avami
Keyword(s):  
Optimal Design ◽  
Process Industries ◽  
Pressure Drops ◽  
Energy Networks

Optimal Design of Macroscopic Water and Energy Networks

2016 ◽  
pp. 267-293
Author(s):  
Ramón González-Bravo ◽  
Fabricio Nápoles-Rivera ◽  
José María Ponce-Ortega
Keyword(s):  
Optimal Design ◽  
Energy Networks

scholarly journals Optimal design of plate-and-frame heat exchangers for efficient heat recovery in process industries

Energy ◽  
2011 ◽  
Vol 36 (8) ◽  
pp. 4588-4598 ◽  
Author(s):  
Olga P. Arsenyeva ◽  
Leonid L. Tovazhnyansky ◽  
Petro O. Kapustenko ◽  
Gennadiy L. Khavin
Keyword(s):  
Optimal Design ◽  
Heat Exchangers ◽  
Heat Recovery ◽  
Process Industries

scholarly journals Optimal design of cyclones in series for the separation of multicomponent mixtures of Portland cement

2021 ◽  
Vol 249 ◽  
pp. 12003
Author(s):  
Juan C. Grave ◽  
Cecilia I. Paulo ◽  
Horacio. A. Petit ◽  
E. Fabián Irassar
Keyword(s):  
Optimal Design ◽  
Portland Cement ◽  
Operating Conditions ◽  
Load Effect ◽  
Pressure Drops ◽  
Maximum Value ◽  
Proposed Model ◽  
Starting Point ◽  
In Series

A nonlinear programming problem was developed for the separation and classification of Portland cement particles into different fractions through the optimal design of two cyclones classifier in series. The equations and restrictions considered included the global mass balances, the equations for the geometric design of the cyclones, the equations for the efficiency calculation, the operating limitations of the process and the pressure drops of the equipment. The results show that an increase on the particles cut size led to a greater dimensions cyclone, as expected. Moreover, fractional efficiencies obtained increase with the reduction of the cut size. The solids load effect is also evaluated, reductions of the solids feed by 50% of its maximum value does not result in a remarkably decrease of efficiencies values. The proposed model has provided useful information and constitutes a starting point for a better understanding of the overall separation process of multi-component Portland cement mixtures. It is a valuable tool for the correct design of this type of separators, given its versatility to optimize under different operating conditions and with different materials.

Entropy-based Optimization for Heat Transfer Enhancement in Tubes with Helical Fins

2021 ◽  
Author(s):  
Bharath Pidaparthi ◽  
Peiwen Li ◽  
Samy Missoum
Keyword(s):  
Heat Transfer ◽  
Optimal Design ◽  
Multiobjective Optimization ◽  
Heat Transfer Enhancement ◽  
Point Of View ◽  
Design Solution ◽  
Total Entropy ◽  
Transfer Enhancement ◽  
Pressure Drops ◽  
Conflicting Objectives

Abstract In this work, a tube with internal helical fins is analyzed and optimized from an entropy generation point of view. Helical fins, in addition to providing heat transfer enhancements, have the potential to level the temperature of the tube under non-uniform circumferential heating. The geometric parameters of helical fins are optimized under two different entropy-based formulations. Specifically, this work focuses on comparing the optimal design solution obtained through the minimization of total entropy and through the multiobjective optimization of the thermal and viscous entropy contributions when considered as two separate objectives. The latter quantities being associated with heat transfer and pressure drops, it is shown that, from a design optimization point of view, it is important to separate both entropies which are conflicting objectives.

Transport Phenomena in Passively Manipulated Chaotic Flows: Split-and-Recombine Reactors

2013 ◽  
Author(s):  
Akram Ghanem ◽  
Thierry Lemenand ◽  
Dominique Della Valle ◽  
Hassan Peerhossaini
Keyword(s):  
Mass Transfer ◽  
Turbulent Regime ◽  
Moderate Pressure ◽  
Process Industries ◽  
Square Duct ◽  
Chaotic Flows ◽  
Pressure Drops ◽  
Static Mixers ◽  
Pressure Losses ◽  
Flow Vorticity

Static mixers and multifunctional heat exchangers/reactors are being used increasingly in process industries. In the inertial or turbulent regime, mixers often incorporate inserts or corrugated walls whose primary function is to create embedded flow vorticity. On the other hand, in low-Reynolds-number flows, for viscosity or residence time purposes, it is necessary to provide solutions based on kinematic mixing, i.e. the topology of the primary flow, such as split-and-recombine reactors (SAR). The concept is based on passive liquid stream division, then rotation in bends of opposite chiralities, and finally recombination, achieving stretching/folding following the baker’s transform. Mixing is efficiently ensured by diffusion without generating prohibitive pressure drops. In this work, a chemical probe is used to study mixing and mass transfer in two different split-and-recombine square duct geometries, SAR-1 and SAR-2 of 3 mm side. Results show that effective mass transfer and mixing can be achieved with a short reactor length and moderate pressure losses; the SAR-1 geometry being more efficient. The chaotic configurations are a good compromise even for higher Reynolds numbers compared to static mixers operating in the transitional regime: they produce moderate pressure losses while enhancing mass transfer.

scholarly journals Optimal Design of Eco-Industrial Parks with coupled energy networks addressing Complexity bottleneck through an Interdependence analysis

2020 ◽  
Vol 138 ◽  
pp. 106859 ◽  
Author(s):  
Florent Mousqué ◽  
Marianne Boix ◽  
Ludovic Montastruc ◽  
Serge Domenech ◽  
Stéphane Négny
Keyword(s):  
Optimal Design ◽  
Energy Networks ◽  
Industrial Parks

Entropy-Based Optimization of Helical Fins for Heat Transfer Enhancement Inside Tubes

2020 ◽  
Author(s):  
Bharath Pidaparthi ◽  
Peiwen Li ◽  
Samy Missoum
Keyword(s):  
Heat Transfer ◽  
Optimal Design ◽  
Design Optimization ◽  
Point Of View ◽  
Design Solution ◽  
Total Entropy ◽  
Transfer Enhancement ◽  
Pressure Drops ◽  
Conflicting Objectives ◽  
Primary Focus

Abstract The design optimization of a tube with internal helical fins is considered from an entropy generation point of view. The primary focus of the article is to study the optimization results based on entropy-based formulations. Specifically, this work compares the optimal design solution obtained through the minimization of total entropy and through the multiobjective optimization of the heat transfer and frictional entropies when considered as two separate objectives. The latter quantities being associated with heat transfer and pressure drops, it is shown that, from a design optimization point of view, it is important to separate both entropies which are conflicting objectives.

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