Publication detail
Polymeric hollow fibre heat exchanger for reducing vehicle CO2 pollution
VANČURA, J. KROULÍKOVÁ, T. BARTULI, E. KŮDELOVÁ, T. VONDRUŠ, J.
English title
Polymeric hollow fibre heat exchanger for reducing vehicle CO2 pollution
Type
journal article in Web of Science
Language
en
Original abstract
Polymeric hollow fibre heat exchangers have proven to be suitable for use in passenger car cooling systems. Chassis dynamometer tests and on-road pre-tests were successfully conducted on a third-generation Škoda Octavia equipped with a 1.4 TSI gasoline engine, front-wheel drive, and a six-speed manual transmission. Additionally, the polymeric heat exchanger was evaluated in a calorimetric circuit. All tests confirmed that a polymeric hollow fibre heat exchanger can sufficiently cool the engine, despite exhibiting an air pressure drop six times higher than that of a conventional metal heat exchanger. This resulted in reduced airflow through the heat exchanger; however, its overall efficiency remained high. The study demonstrates that using a polymeric heat exchanger in a passenger car can reduce CO2 emissions by up to 2 g per kilometre, which has significant economic implications in light of European Parliament and Council Regulation 2019/631. The polymeric heat exchanger achieved a maximum thermal performance of 70 kW at a liquid flow rate of 60 L/min and an air velocity of 4 m/s, which is 1.4 times higher than that of a metal heat exchanger. Another advantage is the dependency of the internal heat exchanger flow on liquid temperature. Due to the small internal diameter of the hollow fibres, laminar flow develops, making it sensitive to changes in liquid viscosity as a function of temperature. This results in lower energy demand for the water pump drive at a constant engine RPM.
English abstract
Polymeric hollow fibre heat exchangers have proven to be suitable for use in passenger car cooling systems. Chassis dynamometer tests and on-road pre-tests were successfully conducted on a third-generation Škoda Octavia equipped with a 1.4 TSI gasoline engine, front-wheel drive, and a six-speed manual transmission. Additionally, the polymeric heat exchanger was evaluated in a calorimetric circuit. All tests confirmed that a polymeric hollow fibre heat exchanger can sufficiently cool the engine, despite exhibiting an air pressure drop six times higher than that of a conventional metal heat exchanger. This resulted in reduced airflow through the heat exchanger; however, its overall efficiency remained high. The study demonstrates that using a polymeric heat exchanger in a passenger car can reduce CO2 emissions by up to 2 g per kilometre, which has significant economic implications in light of European Parliament and Council Regulation 2019/631. The polymeric heat exchanger achieved a maximum thermal performance of 70 kW at a liquid flow rate of 60 L/min and an air velocity of 4 m/s, which is 1.4 times higher than that of a metal heat exchanger. Another advantage is the dependency of the internal heat exchanger flow on liquid temperature. Due to the small internal diameter of the hollow fibres, laminar flow develops, making it sensitive to changes in liquid viscosity as a function of temperature. This results in lower energy demand for the water pump drive at a constant engine RPM.
Keywords in English
Automotive cooling; Polymeric hollow fibre heat exchanger; CO2 pollution; Pressure loss coefficient; Aerodynamic drag
Released
13.03.2025
Publisher
Elsevier
ISSN
1359-4311
Volume
270
Number
126180
Pages from–to
1–12
Pages count
12
BIBTEX
@article{BUT197475,
author="Petr {Dyntera} and Jan {Vančura} and Tereza {Kroulíková} and Erik {Bartuli} and Tereza {Kůdelová} and Jan {Vondruš},
title="Polymeric hollow fibre heat exchanger for reducing vehicle CO2 pollution",
year="2025",
volume="270",
number="126180",
month="March",
pages="1--12",
publisher="Elsevier",
issn="1359-4311"
}