Air filtration performance of symmetric polypropylene hollow-fibre membranes for nanoparticle removal

Bulejko, Pavel; Dohnal, Mirko; Pospíšil, Jiří; Svěrák, Tomáš

doi:10.1016/j.seppur.2017.12.056

Cited by 27 publications

(16 citation statements)

References 49 publications

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“…PHFHE can be applied in such fields as heat recovery systems [6], evaporative cooling systems, desiccant cooling systems, and electronic device cooling [7], [8]. Also, PHFHEs with a membrane polymeric hollow fibers can be applied for filtration processes, chemical separation or medical treatment [9][10][11]. Most commercially available polymer heat exchangers can be used in low temperature applications.…”

Section: Introductionmentioning

confidence: 99%

Testing of Polymeric Hollow Fibre Heat Exchanger with Crossed Hollow Fibres

Bartuli¹,

Kroulíková²

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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The results of the development and experimental investigation of a polymeric hollow fibre heat exchanger are presented. A heat exchanger of a shell-and-tube type with an outer diameter of 80mm and a length of 350mm containing 2200 206mm-long polyamide hollow fibres with an outer diameter of 0.8mm cross-wound at an angle to the axis of the heat exchanger. Cross-winding was realized with the help of the modified winding system X-Winder. Cold water with a temperature of 13°C and a constant flow rate of 2160l/h was fed through the hollow fibres. The dependences of heat transfer characteristics on the shell fluid temperature and fluid flow rate are presented. The device was able to transfer 38kW at a shell water temperature of 70°C and a shell fluid flow rate of 800l/h. In these conditions, the maximum overall heat transfer coefficient reaches 1950W/m²K.

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Section: Introductionmentioning

confidence: 99%

Testing of Polymeric Hollow Fibre Heat Exchanger with Crossed Hollow Fibres

Bartuli¹,

Kroulíková²

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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“…These membranes have the same advantages as polymer hollow fibre heat exchangers and can be used for example in filtration processes, chemical separation or for medical treatment. [8], [9], [10]…”

Section: Introductionmentioning

confidence: 99%

Life Expectancy of Polymeric Hollow Fibre Heat Transfer Surfaces

Brožová¹,

Kroulíková²

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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This article deals with polymer hollow fibre heat exchangers as an alternative to the common metal heat exchangers. These heat exchangers are made of hundreds or even thousands of polymer hollow fibres. The heat exchangers provide such benefits as low weight, corrosion resistance, and easy shaping and machining. Moreover, they are environmentally friendly. These fibres are the key part of such heat exchangers. Therefore, it is necessary to ensure their durability during their lifetime. The paper shows tests the life expectancy of hollow fibres by internal pressure loading. The tests are performed in a water bath at a temperature of 80°C. This simulates the operating conditions of the heat exchangers.

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“…Fiber bundles are somewhat identical with bundles made of porous membranes; for more details see . Membrane bundles are described in detail and studied for air filtration . Due to their highly efficient filtration characteristics and extremely high surface area‐to‐volume ratios up to 4000 m 2 m −3 , hollow‐fiber membranes may be used for special applications in which low volume flow rates are involved.…”

Section: Introductionmentioning

confidence: 99%

Polymeric Hollow‐Fiber Bundles as Immersed Heat Exchangers

Weiß¹,

Astrouski

Reppich

et al. 2018

Chem Eng & Technol

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Plastic immersed heat exchangers are used in various applications where chemically neutral and noncorrosive equipment is required. Their potential competitors, namely, polymeric hollow-fiber bundles, were investigated. Three different fiber bundles were tested as immersed coolers of a hot reservoir. Two types of polypropylene hollow fibers with various outside diameters were employed. Fibers were twisted with different curvature to achieve better distribution and improve natural convection on their outer surface. Calculation by experimental results was compared with the equation for natural convection across the horizontal cylinder, which overestimates heat transfer coefficients and can be applied for only rough estimation. Experimentally achieved pressure drops agreed well with theoretical prediction for laminar flow.

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Air filtration performance of symmetric polypropylene hollow-fibre membranes for nanoparticle removal

Cited by 27 publications

References 49 publications

Testing of Polymeric Hollow Fibre Heat Exchanger with Crossed Hollow Fibres

Testing of Polymeric Hollow Fibre Heat Exchanger with Crossed Hollow Fibres

Life Expectancy of Polymeric Hollow Fibre Heat Transfer Surfaces

Polymeric Hollow‐Fiber Bundles as Immersed Heat Exchangers

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