Optimal sizing and life-cycle cost modelling of pipelines transporting multi-sized solid–liquid mixtures

Asim, Taimoor; Mishra, Rakesh; Kollár, László; Pradhan, Suman

doi:10.1016/j.ijpvp.2013.11.003

Cited by 14 publications

(4 citation statements)

References 9 publications

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“…This is well illustrated by the iso-Reynolds curve plotted in Figs. [8][9][10]. A constant Reynolds number value of 2300 was chosen for the transition from laminar to turbulent flow, and thanks to the hydraulic diameter definition and a constant packing factor of 0.5, the corresponding transitional mass flow mixture was estimated.…”

Section: Pressure Dropmentioning

confidence: 99%

See 1 more Smart Citation

Experimental determination of the energy optimum for the transport of floating particles in pipes

Edelin

Czujko

Castelain

et al. 2015

Experimental Thermal and Fluid Science

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a b s t r a c tThis paper reports the results of an experimental investigation into the transport of fluids composed of water and polypropylene particles, in order to study the transport of floating particles.The determination of the pressure drop and the delivered concentration, for a wide combination of flow rates (0-0.5 kg s À1 ), solid loads (0-25 %vol) and particles mean sizes (341-756 lm), enabled the transport efficiency for this kind of slurry in a circular horizontal pipe (30 mm diameter) to be measured. The results are displayed in relation to flow patterns; they show that the size of the particles has a little impact on the transport efficiency. On the contrary, the flow rate and the volumetric concentration have a strong impact on efficiency, because of their large contribution to the flow pattern. The best operating conditions are obtained close to the limit deposition velocity, when the fully suspended pattern is reached. The solids are then well transported with no waste of energy due to a too high velocity. The optimum concentrations, for a wide range of high efficiency are around 20-25 %vol.

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Section: Pressure Dropmentioning

confidence: 99%

“…In order to achieve these goals, a life-cycle cost analysis model has been developed in which the particle size effects are incorporated by the weighted mean diameter [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of the energy optimum for the transport of floating particles in pipes

Edelin

Czujko

Castelain

et al. 2015

Experimental Thermal and Fluid Science

View full text Add to dashboard Cite

show abstract

“…The spatial distribution of the particulate phase in two-phase system is significant. For example, chemical bubble as the mixture of gas and liquid [1,2] or slurry pipeline as the mixture of liquid and solid [3,4], the related particle patterns are essential in cost accounting and quality management. To obtain the particle pattern, some methods such as x-ray or gamma ray-computed tomography [5,6], electrical resistance tomography (ERT) [7], electrical capacitance tomography (ECT) [8,9], magnetic induction tomography (MIT) [10] and ultrasonic process tomography (UPT) have recently been developed.…”

Section: Introductionmentioning

confidence: 99%

A transmission and reflection coupled ultrasonic process tomography based on cylindrical miniaturized transducers using PVDF films

Yang

Fan

et al. 2017

J. Inst.

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A transmission and reflection coupled ultrasonic process tomography has been developed, which is characterized by a proposed dual-mode (DM) reconstruction algorithm, as well as an adaptive search approach to determine an optimal image threshold during the image binarization. In respect of hardware, to improve the accuracy of time-of-flight (TOF) and extend the lowest detection limit of particle size, a cylindrical miniaturized transducer using polyvinylidene fluoride (PVDF) films is designed. Besides, the development of range-gating technique for the identification of transmission and reflection waves in scanning is discussed. A particle system with four iron particles is then investigated numerically and experimentally to evaluate these proposed methods. The sound pressure distribution in imaging area is predicted numerically, followed by the analysis of the relationship between the emitting surface width of transducer and particle size. After the processing of experimental data for effective waveform extraction and fusion, the comparison between reconstructed results from transmission-mode (TM), reflection-mode (RM), and dual-mode reconstructions is carried out and the latter manifests obvious improvements from the blurring reduction to the enhancement of particle boundary.

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“…DH networks are often subject to detailed analyze in order to find optimal pipes sizing [6] or minimize the heat losses [7,8]. Similar approaches can be utilized for DH supply system, that would transport heat over long distances, from the HS to the DH area.…”

Section: Introductionmentioning

confidence: 99%

Multicriteria optimization approach to design and operation of district heating supply system over its life cycle

Hirsch

Duzinkiewicz

2017

E3S Web Conf.

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Abstract. District Heating (DH) systems are commonly supplied using local heat sources. Nowadays, modern insulation materials allow for effective and economically viable heat transportation over long distances (over 20 km). In the paper a method for optimized selection of design and operating parameters of long distance Heat Transportation System (HTS) is proposed. The method allows for evaluation of feasibility and effectivity of heat transportation from the considered heat sources. The optimized selection is formulated as multicriteria decision-making problem. The constraints for this problem include a static HTS model, allowing considerations of system life cycle, time variability and spatial topology. Thereby, variation of heat demand and ground temperature within the DH area, insulation and pipe aging and/or terrain elevation profile are taken into account in the decision-making process. The HTS construction costs, pumping power, and heat losses are considered as objective functions. Inner pipe diameter, insulation thickness, temperatures and pumping stations locations are optimized during the decision-making process. Moreover, the variants of pipe-laying e.g. one pipeline with the larger diameter or two with the smaller might be considered during the optimization. The analyzed optimization problem is multicriteria, hybrid and nonlinear. Because of such problem properties, the genetic solver was applied.

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Optimal sizing and life-cycle cost modelling of pipelines transporting multi-sized solid–liquid mixtures

Cited by 14 publications

References 9 publications

Experimental determination of the energy optimum for the transport of floating particles in pipes

Experimental determination of the energy optimum for the transport of floating particles in pipes

A transmission and reflection coupled ultrasonic process tomography based on cylindrical miniaturized transducers using PVDF films

Multicriteria optimization approach to design and operation of district heating supply system over its life cycle

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