Obiekt

Tytuł: Maximum entropy generation rate in a heat exchanger at constant inlet parameters

Opis:

The main goal of the paper is to provide a condition for which a maximum entropy generation occurs in a heat exchanger at constant inlet parameters (temperatures and mass flow rates). Knowing this condition is essential during the design of the heat exchanger as it allows designers to avoid one of its most unfavourable operating conditions in terms of thermodynamics. Entropy generation resulting from the resistance of heat-transferring fluids to flow was not taken into account. Entropy generation was analysed as a function of a heat flow rate at constant parameters at the inlet of a condenser and a counter-flow double-pipe heat exchanger. The analysis showed that for the condenser the entropy generation rate increases with the increase in the heat flow rate. The maximum entropy generation rate occurs for the maximum flow rate of the heat that can be transferred according to the definition of heat transfer effectiveness. For the counterflow heat exchanger, the entropy generation as a function of the heat flow rate reaches maximum at constant inlet parameters (temperatures and mass flow rates). It appeared that the peak entropy generation, or the largest exergy loss, occurs when the outlet temperatures of the fluids are equal. This assertion was verified against data obtained from a simulator of the counter-flow heat exchanger for two different relations between heat capacity rates.

Miejsce wydania:

Koszalin

Wydawca:

Publishing House of the Koszalin University of Technology

Format:

application/pdf

Identyfikator:

oai:dlibra.tu.koszalin.pl:1609

Język:

eng

Jest częścią:

Journal of Mechanical and Energy Engineering. Vol.1 (41), nr 1, s. 79-86

Prawa:

Biblioteka Politechniki Koszalińskiej

Prawa dostępu:

internet

Licencja:

Creative Commons BY 4.0

Kolekcje, do których przypisany jest obiekt:

Data ostatniej modyfikacji:

6 lis 2023

Data dodania obiektu:

22 lip 2022

Liczba wyświetleń treści obiektu:

10

Wszystkie dostępne wersje tego obiektu:

https://dlibra.tu.koszalin.pl/publication/1613

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