Detail publikačního výsledku

NUMERICAL INVESTIGATION OF HEAT TRANSFER ON THE OUTER SURFACE OF POLYMERIC HOLLOW FIBERS

BARTULI, E.; RAUDENSKÝ, M.

Originální název

NUMERICAL INVESTIGATION OF HEAT TRANSFER ON THE OUTER SURFACE OF POLYMERIC HOLLOW FIBERS

Anglický název

NUMERICAL INVESTIGATION OF HEAT TRANSFER ON THE OUTER SURFACE OF POLYMERIC HOLLOW FIBERS

Druh

Článek WoS

Originální abstrakt

Polymeric hollow-fiber heat exchangers (PHFHEs) are heat exchangers that use polymeric microchannels as the heat-transfer surface. The main purpose of this work was to determine the optimal arrangement of polymeric hollow fibers in a PHFHE. The object of study was a bundle of parallel polymeric hollow fibers with an outer diameter of 0.8 mm. The heated working fluid flew inside the hollow fibers. The heat was transferred by a cooling medium from the outside of the hollow fibers. Heat-transfer coefficients on the outer surface of the hollow fibers were obtained using computer modelling. For the case of water cooling, a sharp heat-transfer-coefficient increase was observed as the angle alpha between the hollow-fiber position and the direction of the cooling-medium flow increased to 30 degrees; however, its further increase to 45 degrees had no significant effect. With the water cooling, the total heat-transfer coefficient of the PHFHE increased by 35 % and with the air cooling, it increased by 15 %. The angle of 30 degrees can he considered as the optimal angle for manufacturing such PHFHEs.

Anglický abstrakt

Polymeric hollow-fiber heat exchangers (PHFHEs) are heat exchangers that use polymeric microchannels as the heat-transfer surface. The main purpose of this work was to determine the optimal arrangement of polymeric hollow fibers in a PHFHE. The object of study was a bundle of parallel polymeric hollow fibers with an outer diameter of 0.8 mm. The heated working fluid flew inside the hollow fibers. The heat was transferred by a cooling medium from the outside of the hollow fibers. Heat-transfer coefficients on the outer surface of the hollow fibers were obtained using computer modelling. For the case of water cooling, a sharp heat-transfer-coefficient increase was observed as the angle alpha between the hollow-fiber position and the direction of the cooling-medium flow increased to 30 degrees; however, its further increase to 45 degrees had no significant effect. With the water cooling, the total heat-transfer coefficient of the PHFHE increased by 35 % and with the air cooling, it increased by 15 %. The angle of 30 degrees can he considered as the optimal angle for manufacturing such PHFHEs.

Klíčová slova

heat transfer; heat exchanger; polymeric hollow fibers; numerical modelling

Klíčová slova v angličtině

heat transfer; heat exchanger; polymeric hollow fibers; numerical modelling

Autoři

BARTULI, E.; RAUDENSKÝ, M.

Rok RIV

2019

Vydáno

02.08.2018

Nakladatel

INST ZA KOVINSKE MATERIALE I IN TEHNOLOGIE

Místo

LEPI POT 11, LJUBJANA, 10000, SLOVENIA

ISSN

1580-2949

Periodikum

Materiali in Tehnologije

Svazek

52

Číslo

4

Stát

Slovinská republika

Strany od

459

Strany do

463

Strany počet

5

URL

http://mit.imt.si/Revija/izvodi/mit184/bartuli.pdf

BibTex

@article{BUT152128,
  author="Erik {Bartuli} and Miroslav {Raudenský}",
  title="NUMERICAL INVESTIGATION OF HEAT TRANSFER ON THE OUTER SURFACE OF POLYMERIC HOLLOW FIBERS",
  journal="Materiali in Tehnologije",
  year="2018",
  volume="52",
  number="4",
  pages="459--463",
  doi="10.17222/mit.2016.221",
  issn="1580-2949",
  url="http://mit.imt.si/Revija/izvodi/mit184/bartuli.pdf"
}