Analysis of wound filter performance from DREF yarn spun at different suction pressure

Kanade, Pragnya Sanjiv; Koranne, Milind; Desai, Tejas

doi:10.1016/j.aej.2016.09.012

Cited by 7 publications

(16 citation statements)

References 5 publications

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“…Besides, the values of head losses calculated here are also in the same order of magnitude as those measured in [2] for comparable water flow rates. Unfortunately, there are not many data available in the literature, but the values obtained here are compatible with those observed in technical practice by manufacturers and installers.…”

Section: Resultssupporting

confidence: 79%

“…As expected, as particles are deposited either inside the filter matrix and on its surface, the filter becomes clogged and offers greater resistance to the passage of flow. This explains the increasing trend of pressure drop observed in all tests (see also [2,8]). …”

Section: Resultssupporting

confidence: 52%

“…The yarn structure in itself is porous, resulting in particles becoming embedded inside it. Thus, with time, as the filter becomes clogged, it will resist the passage of flow [2]. The wire-wound filter cartridge does not allow maintenance (e.g., washing) to restore the initial status; this implies that after a certain period of time, it has to be replaced.…”

Section: Clogging Scenariosmentioning

confidence: 99%

“…Besides, these works are usually focused on different features, such as water quality aspects or efficiency of the filtration process, or on specific topics, such as the removal of specific substances from drinking water [2][3][4][5]. An ad-hoc pilot circuit was, therefore, designed and built at the Laboratory of Environmental and Maritime Hydraulics (LIDAM) of the Department of Civil Engineering (DiCiv), University of Salerno.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Analysis of the Hydraulic Performance of Wire-Wound Filter Cartridges in Domestic Plants

Viccione

Evangelista

Marinis

2018

Water

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Among the treatment processes in water networks-of increasing importance in recent decades due to the progressive deterioration of water quality-filtration still represents a major solution. The present work focuses in particular on the filtration of drinking water with wire-wound filter cartridges, the most widely used type of cartridge in domestic plants among the commercially available cartridges, due to their efficiency and relatively low costs. Specifically, the hydraulic performance of these cartridges was analyzed, i.e., mainly the effect of their introduction into a hydraulic system in terms of head losses. The local pressure drops produced by the cartridges may, in fact, create problems in hydraulic plants already characterized by low pressures, where pressure levels may fall below the minimum limit recommended to ensure the smooth operation of domestic devices. To this aim, a set of experiments was conducted in a pilot circuit in the Laboratory of Environmental and Maritime Hydraulics (LIDAM) at University of Salerno, where pressure drops produced by the cartridges were measured in different operating conditions. The artificially dirty conditions of the wire-wound filters were analyzed in order to evaluate the effect of the filter obstruction. The analysis provided some useful information about the performance and duration of these filters, as well as suggestions for more efficient commercial filters.

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Section: Resultssupporting

confidence: 79%

Section: Resultssupporting

confidence: 52%

Section: Clogging Scenariosmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Analysis of the Hydraulic Performance of Wire-Wound Filter Cartridges in Domestic Plants

Viccione

Evangelista

Marinis

2018

Water

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“…These head losses can be significant, especially when the cartridge is installed in water networks characterized by low hydraulic heads, when the resulting pressure levels can fall below the recommended minimum limit to ensure the proper functioning of water supplying domestic appliances. The literature analysis offers few studies on this topic, also not general and focused on specific features or on water quality aspects, such as the removal of specific substances from drinking water (Kanade & Bhattacharya, 2016), (Logsdon, 2008), (Sutherland, 2008), (Kanade, Koranne, & Desai, 2017), (Pawlowicz, Evans, Johnson, & Brooks, 2006), (Tomaszewska, et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of the Hydraulic Performance of Filtering Cartridges for Water Treatment

Viccione¹,

Evangelista²

EPiC Series in Engineering

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Water treatments are progressively increasing their importance nowadays due to the gradual deterioration of water quality as a consequence of the environmental pollution and of industrial processes. Among these treatments, filtration still represents a major solution. In this work some results of a laboratory experimental analysis of the hydraulic performances of commercial cartridges for water treatment with filtration are presented in comparison with the results obtained by numerical simulations of the same physical model performed through the EPANET software. Specifically, the performance of filter cartridges is evaluated in terms of the head losses that they produce in the hydraulic systems in which they are introduced. These losses can be particularly undesirable for low-pressure plants, where they can inhibit the normal operation of the installed apparatus. Head losses also increase significantly with a prolonged use over time, due to the clogging particles retained on the outer surface and inside the cartridge, with a consequent reduction in the filtration capacity which generates the necessity to replace the cartridge itself. The comparison between numerical and experimental results showed a good agreement. The analysis of the data permitted to highlight several features of the filtration process in these commercial cartridges and draw up different remarks for their design and production.

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Event-triggered model predictive control of positive systems with random actuator saturation

Zhang

Lin

2021

Nonlinear Dyn

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This paper investigates the event-triggered model predictive control of positive systems with actuator saturation. Interval and polytopic uncertainties are imposed on the systems, respectively. First, a new model with actuator saturation obeying Bernoulli distribution is established, which is more general and powerful for describing the saturation phenomenon than the saturation in a deterministic way. Then, a linear event-triggering condition is constructed based on the state and error signal. Under the event-triggering condition, an interval estimate approach is presented to reach the positivity and stability of the systems. The saturation part in the controller is technically transformed into a non-saturation part. Thus, a linear programming approach is proposed to compute the event-triggered controller gain and the corresponding gain of attraction domain. A predictive algorithm is introduced for the computation of the event-triggered controller parameters. Finally, an example is provided to illustrate the validity of the design.

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Analysis of wound filter performance from DREF yarn spun at different suction pressure

Cited by 7 publications

References 5 publications

Experimental Analysis of the Hydraulic Performance of Wire-Wound Filter Cartridges in Domestic Plants

Experimental Analysis of the Hydraulic Performance of Wire-Wound Filter Cartridges in Domestic Plants

Experimental and Numerical Analysis of the Hydraulic Performance of Filtering Cartridges for Water Treatment

Event-triggered model predictive control of positive systems with random actuator saturation

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